From e86bc867938af3dd6446b0da4c8cf9f88fc7cf17 Mon Sep 17 00:00:00 2001
From: Julian Freeman <freemanjulian372@gmail.com>
Date: Sun, 19 Apr 2026 09:56:09 -0400
Subject: [PATCH] op 1

---
 src-tauri/.gitignore            |   1 +
 src-tauri/src/binary_manager.rs |  45 +-
 src-tauri/src/commands.rs       |  66 ++-
 src-tauri/src/downloader.rs     | 108 +++--
 src-tauri/src/lib.rs            |   1 +
 src-tauri/src/process_utils.rs  |  10 +
 src-tauri/src/storage.rs        |  28 +-
 src-tauri/tauri.conf.json       |   2 +-
 src/App.vue                     |  11 +-
 src/stores/analysis.ts          |  18 +-
 src/stores/logs.ts              |  11 +-
 src/stores/queue.ts             |  11 +-
 src/stores/settings.ts          |  53 ++-
 src/types/media.ts              |  24 ++
 src/utils/analysis.ts           |  45 ++
 src/views/History.vue           |   5 +-
 src/views/Home.vue              | 742 +++++++++++++++-----------------
 src/views/Settings.vue          |   4 +-
 18 files changed, 685 insertions(+), 500 deletions(-)
 create mode 100644 src-tauri/src/process_utils.rs
 create mode 100644 src/types/media.ts
 create mode 100644 src/utils/analysis.ts

diff --git a/src-tauri/.gitignore b/src-tauri/.gitignore
index b21bd68..5467e21 100644
--- a/src-tauri/.gitignore
+++ b/src-tauri/.gitignore
@@ -1,6 +1,7 @@
 # Generated by Cargo
 # will have compiled files and executables
 /target/
+/target*/
 
 # Generated by Tauri
 # will have schema files for capabilities auto-completion
diff --git a/src-tauri/src/binary_manager.rs b/src-tauri/src/binary_manager.rs
index 8ee1ad6..8c693cd 100644
--- a/src-tauri/src/binary_manager.rs
+++ b/src-tauri/src/binary_manager.rs
@@ -10,6 +10,7 @@ use std::os::windows::process::CommandExt;
 use zip::ZipArchive;
 use std::io::Cursor;
 
+use crate::process_utils::first_non_empty_line;
 use crate::storage::{self};
 
 const YT_DLP_REPO_URL: &str = "https://github.com/yt-dlp/yt-dlp/releases/latest/download";
@@ -285,6 +286,11 @@ pub async fn download_qjs(app: &AppHandle) -> Result<PathBuf> {
 pub async fn update_qjs(app: &AppHandle) -> Result<String> {
     // QuickJS doesn't have self-update, so we just re-download
     download_qjs(app).await?;
+
+    let mut settings = storage::load_settings(app)?;
+    settings.last_updated = Some(chrono::Utc::now());
+    storage::save_settings(app, &settings)?;
+
     Ok("QuickJS 已更新/安装".to_string())
 }
 
@@ -441,18 +447,8 @@ pub fn get_ffmpeg_version(app: &AppHandle) -> Result<String> {
 
     let output = cmd.output()?;
     if output.status.success() {
-        // Prefer stdout, fallback to stderr if stdout empty
-        let out = if !output.stdout.is_empty() {
-            String::from_utf8_lossy(&output.stdout).to_string()
-        } else {
-            String::from_utf8_lossy(&output.stderr).to_string()
-        };
-
-        if let Some(first_line) = out.lines().next() {
-            let v = first_line.trim().to_string();
-            if !v.is_empty() {
-                return Ok(v);
-            }
+        if let Some(line) = first_non_empty_line(&output) {
+            return Ok(line);
         }
     }
 
@@ -465,6 +461,31 @@ pub fn get_qjs_version(app: &AppHandle) -> Result<String> {
     if !path.exists() {
         return Ok("未安装".to_string());
     }
+
+    let mut version_cmd = std::process::Command::new(&path);
+    version_cmd.arg("--version");
+    #[cfg(target_os = "windows")]
+    version_cmd.creation_flags(0x08000000);
+
+    if let Ok(output) = version_cmd.output() {
+        if output.status.success() {
+            if let Some(line) = first_non_empty_line(&output) {
+                return Ok(line);
+            }
+        }
+    }
+
+    let mut help_cmd = std::process::Command::new(&path);
+    help_cmd.arg("-h");
+    #[cfg(target_os = "windows")]
+    help_cmd.creation_flags(0x08000000);
+
+    if let Ok(output) = help_cmd.output() {
+        if let Some(line) = first_non_empty_line(&output) {
+            return Ok(line);
+        }
+    }
+
     Ok("已安装".to_string())
 }
 
diff --git a/src-tauri/src/commands.rs b/src-tauri/src/commands.rs
index 321b501..94078a7 100644
--- a/src-tauri/src/commands.rs
+++ b/src-tauri/src/commands.rs
@@ -5,6 +5,10 @@ use crate::downloader::DownloadOptions;
 use crate::storage::{Settings, HistoryItem};
 use uuid::Uuid;
 use std::path::Path;
+use std::sync::LazyLock;
+use tokio::sync::Semaphore;
+
+static DOWNLOAD_SEMAPHORE: LazyLock<Semaphore> = LazyLock::new(|| Semaphore::new(3));
 
 #[tauri::command]
 pub async fn init_ytdlp(app: AppHandle) -> Result<bool, String> {
@@ -60,14 +64,29 @@ pub async fn fetch_image(url: String) -> Result<String, String> {
         .await
         .map_err(|e| e.to_string())?;
 
+    if !res.status().is_success() {
+        return Err(format!("image fetch failed with status {}", res.status()));
+    }
+
+    let mime = res
+        .headers()
+        .get(reqwest::header::CONTENT_TYPE)
+        .and_then(|value| value.to_str().ok())
+        .map(|value| value.split(';').next().unwrap_or("image/jpeg").to_string())
+        .unwrap_or_else(|| {
+            if url.to_lowercase().ends_with(".png") {
+                "image/png".to_string()
+            } else if url.to_lowercase().ends_with(".webp") {
+                "image/webp".to_string()
+            } else {
+                "image/jpeg".to_string()
+            }
+        });
     let bytes = res.bytes().await.map_err(|e| e.to_string())?;
     
     // Convert to base64
     let b64 = general_purpose::STANDARD.encode(&bytes);
-    
-    // Simple heuristic for mime type
-    let mime = if url.to_lowercase().ends_with(".png") { "image/png" } else { "image/jpeg" };
-    
+
     Ok(format!("data:{};base64,{}", mime, b64))
 }
 
@@ -84,9 +103,11 @@ pub async fn start_download(app: AppHandle, url: String, options: DownloadOption
     
     // Spawn the download task
     tauri::async_runtime::spawn(async move {
+        let _permit = DOWNLOAD_SEMAPHORE.acquire().await.ok();
         let res = downloader::download_video(app.clone(), id_clone.clone(), url.clone(), options.clone()).await;
         
         let status = if res.is_ok() { "success" } else { "failed" };
+        let file_path = res.ok().flatten();
         
         // Add to history
         let output_dir = options.output_path.clone(); // Store the directory user selected
@@ -97,6 +118,7 @@ pub async fn start_download(app: AppHandle, url: String, options: DownloadOption
             thumbnail: metadata.thumbnail,
             url: url,
             output_path: output_dir, 
+            file_path,
             timestamp: chrono::Utc::now(),
             status: status.to_string(),
             format: options.output_format,
@@ -136,16 +158,16 @@ pub fn delete_history_item(app: AppHandle, id: String) -> Result<(), String> {
 #[tauri::command]
 pub async fn close_splash(app: AppHandle) {
     if let Some(splash) = app.get_webview_window("splashscreen") {
-        splash.close().unwrap();
+        let _ = splash.close();
     }
     if let Some(main) = app.get_webview_window("main") {
-        main.show().unwrap();
+        let _ = main.show();
     }
 }
 
 #[tauri::command]
 pub fn open_in_explorer(app: AppHandle, path: String) -> Result<(), String> {
-    let path_to_open = if Path::new(&path).exists() {
+    let resolved_path = if Path::new(&path).exists() {
         path
     } else {
         app.path().download_dir()
@@ -155,17 +177,29 @@ pub fn open_in_explorer(app: AppHandle, path: String) -> Result<(), String> {
 
     #[cfg(target_os = "windows")]
     {
-        std::process::Command::new("explorer")
-            .arg(path_to_open)
-            .spawn()
-            .map_err(|e| e.to_string())?;
+        let resolved = Path::new(&resolved_path);
+        let mut command = std::process::Command::new("explorer");
+
+        if resolved.is_file() {
+            command.arg("/select,").arg(resolved);
+        } else {
+            command.arg(resolved);
+        }
+
+        command.spawn().map_err(|e| e.to_string())?;
     }
     #[cfg(target_os = "macos")]
     {
-        std::process::Command::new("open")
-            .arg(path_to_open)
-            .spawn()
-            .map_err(|e| e.to_string())?;
+        let resolved = Path::new(&resolved_path);
+        let mut command = std::process::Command::new("open");
+
+        if resolved.is_file() {
+            command.arg("-R").arg(resolved);
+        } else {
+            command.arg(resolved);
+        }
+
+        command.spawn().map_err(|e| e.to_string())?;
     }
     Ok(())
-}
\ No newline at end of file
+}
diff --git a/src-tauri/src/downloader.rs b/src-tauri/src/downloader.rs
index 9a358a9..68554bc 100644
--- a/src-tauri/src/downloader.rs
+++ b/src-tauri/src/downloader.rs
@@ -57,6 +57,7 @@ pub struct LogEvent {
     pub level: String, // "info", "error"
 }
 
+const FINAL_PATH_MARKER: &str = "__STREAM_CAPTURE_FINAL_PATH__";
 
 
 pub async fn fetch_metadata(app: &AppHandle, url: &str, parse_mix_playlist: bool) -> Result<MetadataResult> {
@@ -218,7 +219,7 @@ pub async fn download_video(
     id: String, // Unique ID for this download task (provided by frontend)
     url: String,
     options: DownloadOptions,
-) -> Result<String> {
+) -> Result<Option<String>> {
     let ytdlp_path = binary_manager::get_ytdlp_path(&app)?;
     let qjs_path = binary_manager::get_qjs_path(&app)?; // Get absolute path to quickjs
     let ffmpeg_path = binary_manager::get_ffmpeg_path(&app)?; // Get absolute path to ffmpeg
@@ -246,6 +247,8 @@ pub async fn download_video(
     let output_template = format!("{}/%(title)s.%(ext)s", options.output_path.trim_end_matches(std::path::MAIN_SEPARATOR));
     args.push("-o".to_string());
     args.push(output_template);
+    args.push("--print".to_string());
+    args.push(format!("after_move:{FINAL_PATH_MARKER}%(filepath)s"));
 
     // Formats
     if options.is_audio_only {
@@ -295,56 +298,84 @@ pub async fn download_video(
     let stdout = child.stdout.take().ok_or(anyhow!("Failed to open stdout"))?;
     let stderr = child.stderr.take().ok_or(anyhow!("Failed to open stderr"))?;
 
-    let mut stdout_reader = BufReader::new(stdout);
-    let mut stderr_reader = BufReader::new(stderr);
+    let progress_regex = Regex::new(r"\[download\]\s+(\d+(?:\.\d+)?)%.*?(?:\s+at\s+([^\s]+))?").unwrap();
 
-    let re = Regex::new(r"\[download\]\s+(\d+\.?\d*)%").unwrap();
+    let stdout_task = {
+        let app = app.clone();
+        let id = id.clone();
+        tokio::spawn(async move {
+            let mut reader = BufReader::new(stdout).lines();
+            let mut final_path: Option<String> = None;
 
-    // Loop to read both streams
-    loop {
-        let mut out_line = String::new();
-        let mut err_line = String::new();
-
-        tokio::select! {
-            res = stdout_reader.read_line(&mut out_line) => {
-                if res.unwrap_or(0) == 0 {
-                    break; // EOF
+            while let Some(line) = reader.next_line().await? {
+                let trimmed = line.trim();
+                if trimmed.is_empty() {
+                    continue;
                 }
-                
-                // Parse progress
-                if let Some(caps) = re.captures(&out_line) {
+
+                if let Some(path) = trimmed.strip_prefix(FINAL_PATH_MARKER) {
+                    final_path = Some(path.to_string());
+                    continue;
+                }
+
+                if let Some(caps) = progress_regex.captures(trimmed) {
                     if let Some(pct_match) = caps.get(1) {
                         if let Ok(pct) = pct_match.as_str().parse::<f64>() {
+                            let speed = caps
+                                .get(2)
+                                .map(|value| value.as_str().to_string())
+                                .unwrap_or_else(|| "待定".to_string());
+
                             app.emit("download-progress", ProgressEvent {
                                 id: id.clone(),
                                 progress: pct,
-                                speed: "待定".to_string(),
+                                speed,
                                 status: "downloading".to_string(),
                             }).ok();
+                            continue;
                         }
                     }
-                } else { // Only emit download-log if it's NOT a progress line
-                     app.emit("download-log", LogEvent {
-                        id: id.clone(),
-                        message: out_line.trim().to_string(),
-                        level: "info".to_string(),
-                    }).ok();
                 }
+
+                app.emit("download-log", LogEvent {
+                    id: id.clone(),
+                    message: trimmed.to_string(),
+                    level: "info".to_string(),
+                }).ok();
             }
-            res = stderr_reader.read_line(&mut err_line) => {
-                 if res.unwrap_or(0) > 0 {
-                     // Log error
-                    app.emit("download-log", LogEvent {
-                        id: id.clone(),
-                        message: err_line.trim().to_string(),
-                        level: "error".to_string(),
-                    }).ok();
-                 }
+
+            Ok::<Option<String>, anyhow::Error>(final_path)
+        })
+    };
+
+    let stderr_task = {
+        let app = app.clone();
+        let id = id.clone();
+        tokio::spawn(async move {
+            let mut reader = BufReader::new(stderr).lines();
+            let mut last_error: Option<String> = None;
+
+            while let Some(line) = reader.next_line().await? {
+                let trimmed = line.trim();
+                if trimmed.is_empty() {
+                    continue;
+                }
+
+                last_error = Some(trimmed.to_string());
+                app.emit("download-log", LogEvent {
+                    id: id.clone(),
+                    message: trimmed.to_string(),
+                    level: "error".to_string(),
+                }).ok();
             }
-        }
-    }
+
+            Ok::<Option<String>, anyhow::Error>(last_error)
+        })
+    };
 
     let status = child.wait().await?;
+    let final_path = stdout_task.await.map_err(|e| anyhow!(e.to_string()))??;
+    let last_error = stderr_task.await.map_err(|e| anyhow!(e.to_string()))??;
 
     if status.success() {
          app.emit("download-progress", ProgressEvent {
@@ -353,7 +384,7 @@ pub async fn download_video(
             speed: "-".to_string(),
             status: "finished".to_string(),
         }).ok();
-        Ok("下载完成".to_string())
+        Ok(final_path)
     } else {
          app.emit("download-progress", ProgressEvent {
             id: id.clone(),
@@ -361,6 +392,11 @@ pub async fn download_video(
             speed: "-".to_string(),
             status: "error".to_string(),
         }).ok();
-        Err(anyhow!("下载进程失败"))
+        Err(anyhow!(
+            "下载进程失败{}",
+            last_error
+                .map(|message| format!(": {message}"))
+                .unwrap_or_default()
+        ))
     }
 }
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 6d567cd..30e8c35 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -3,6 +3,7 @@ mod binary_manager;
 mod downloader;
 mod storage;
 mod commands;
+mod process_utils;
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
diff --git a/src-tauri/src/process_utils.rs b/src-tauri/src/process_utils.rs
new file mode 100644
index 0000000..8f26007
--- /dev/null
+++ b/src-tauri/src/process_utils.rs
@@ -0,0 +1,10 @@
+use std::process::Output;
+
+pub fn first_non_empty_line(output: &Output) -> Option<String> {
+    String::from_utf8_lossy(&output.stdout)
+        .lines()
+        .chain(String::from_utf8_lossy(&output.stderr).lines())
+        .map(str::trim)
+        .find(|line| !line.is_empty())
+        .map(str::to_string)
+}
diff --git a/src-tauri/src/storage.rs b/src-tauri/src/storage.rs
index a288676..4170792 100644
--- a/src-tauri/src/storage.rs
+++ b/src-tauri/src/storage.rs
@@ -34,11 +34,35 @@ pub struct HistoryItem {
     pub thumbnail: String,
     pub url: String,
     pub output_path: String,
+    #[serde(default)]
+    pub file_path: Option<String>,
     pub timestamp: DateTime<Utc>,
     pub status: String, // "success", "failed"
     pub format: String,
 }
 
+fn write_json_atomically(path: &PathBuf, content: &str) -> Result<()> {
+    let file_name = path
+        .file_name()
+        .and_then(|name| name.to_str())
+        .unwrap_or("data.json");
+    let tmp_path = path.with_file_name(format!("{file_name}.tmp"));
+
+    fs::write(&tmp_path, content)?;
+
+    if path.exists() {
+        match fs::rename(&tmp_path, path) {
+            Ok(()) => return Ok(()),
+            Err(_) => {
+                fs::remove_file(path)?;
+            }
+        }
+    }
+
+    fs::rename(&tmp_path, path)?;
+    Ok(())
+}
+
 pub fn get_app_data_dir(app: &AppHandle) -> Result<PathBuf> {
     // In Tauri v2, we use app.path().app_data_dir()
     let path = app.path().app_data_dir()?;
@@ -76,7 +100,7 @@ pub fn load_settings(app: &AppHandle) -> Result<Settings> {
 pub fn save_settings(app: &AppHandle, settings: &Settings) -> Result<()> {
     let path = get_settings_path(app)?;
     let content = serde_json::to_string_pretty(settings)?;
-    fs::write(path, content)?;
+    write_json_atomically(&path, &content)?;
     Ok(())
 }
 
@@ -94,7 +118,7 @@ pub fn load_history(app: &AppHandle) -> Result<Vec<HistoryItem>> {
 pub fn save_history(app: &AppHandle, history: &[HistoryItem]) -> Result<()> {
     let path = get_history_path(app)?;
     let content = serde_json::to_string_pretty(history)?;
-    fs::write(path, content)?;
+    write_json_atomically(&path, &content)?;
     Ok(())
 }
 
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index db14984..cbad0bf 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -31,7 +31,7 @@
       }
     ],
     "security": {
-      "csp": null
+      "csp": "default-src 'self' asset: http://asset.localhost https://asset.localhost; img-src 'self' asset: http://asset.localhost https://asset.localhost data: blob: https:; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-eval'; connect-src 'self' ipc: http://ipc.localhost https://ipc.localhost ws://localhost:1420 http://localhost:1420 https:; font-src 'self' asset: http://asset.localhost https://asset.localhost data:;"
     }
   },
   "bundle": {
diff --git a/src/App.vue b/src/App.vue
index fe89bd7..9a1fd2f 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { onMounted } from 'vue'
+import { onBeforeUnmount, onMounted } from 'vue'
 import { RouterView, RouterLink, useRoute } from 'vue-router'
 import { Home, History, Settings as SettingsIcon, Download, FileText } from 'lucide-vue-next'
 import { useSettingsStore } from './stores/settings'
@@ -13,10 +13,17 @@ const route = useRoute()
 
 onMounted(async () => {
   await settingsStore.loadSettings()
+  settingsStore.initThemeListener()
   await settingsStore.initYtdlp()
   await queueStore.initListener()
   await logsStore.initListener()
 })
+
+onBeforeUnmount(() => {
+  settingsStore.disposeThemeListener()
+  queueStore.disposeListener()
+  logsStore.disposeListener()
+})
 </script>
 
 <template>
@@ -74,4 +81,4 @@ onMounted(async () => {
       <RouterView />
     </main>
   </div>
-</template>
\ No newline at end of file
+</template>
diff --git a/src/stores/analysis.ts b/src/stores/analysis.ts
index 6482fba..1d58e25 100644
--- a/src/stores/analysis.ts
+++ b/src/stores/analysis.ts
@@ -1,12 +1,14 @@
 // filepath: src/stores/analysis.ts
 import { defineStore } from 'pinia'
 import { ref } from 'vue'
+import type { AnalysisMetadata } from '../types/media'
+import { isPlaylistMetadata } from '../types/media'
 
 export const useAnalysisStore = defineStore('analysis', () => {
   const url = ref('')
   const loading = ref(false)
   const error = ref('')
-  const metadata = ref<any>(null)
+  const metadata = ref<AnalysisMetadata | null>(null)
   
   // New state for mix detection
   const isMix = ref(false)
@@ -24,8 +26,8 @@ export const useAnalysisStore = defineStore('analysis', () => {
   })
 
   function toggleEntry(id: string) {
-      if (metadata.value && metadata.value.entries) {
-          const entry = metadata.value.entries.find((e: any) => e.id === id)
+      if (isPlaylistMetadata(metadata.value)) {
+          const entry = metadata.value.entries.find(e => e.id === id)
           if (entry) {
               entry.selected = !entry.selected
           }
@@ -33,8 +35,8 @@ export const useAnalysisStore = defineStore('analysis', () => {
   }
 
   function setAllEntries(selected: boolean) {
-      if (metadata.value && metadata.value.entries) {
-          metadata.value.entries = metadata.value.entries.map((e: any) => ({
+      if (isPlaylistMetadata(metadata.value)) {
+          metadata.value.entries = metadata.value.entries.map(e => ({
               ...e,
               selected
           }))
@@ -42,8 +44,8 @@ export const useAnalysisStore = defineStore('analysis', () => {
   }
 
   function invertSelection() {
-      if (metadata.value && metadata.value.entries) {
-          metadata.value.entries = metadata.value.entries.map((e: any) => ({
+      if (isPlaylistMetadata(metadata.value)) {
+          metadata.value.entries = metadata.value.entries.map(e => ({
               ...e,
               selected: !e.selected
           }))
@@ -60,4 +62,4 @@ export const useAnalysisStore = defineStore('analysis', () => {
   }
 
   return { url, loading, error, metadata, options, isMix, scanMix, isBatchMode, toggleEntry, setAllEntries, invertSelection, reset }
-})
\ No newline at end of file
+})
diff --git a/src/stores/logs.ts b/src/stores/logs.ts
index f079df0..9e76d0a 100644
--- a/src/stores/logs.ts
+++ b/src/stores/logs.ts
@@ -20,6 +20,7 @@ interface LogEvent {
 export const useLogsStore = defineStore('logs', () => {
   const logs = ref<LogEntry[]>([])
   const isListening = ref(false)
+  let unlisten: (() => void) | null = null
 
   function addLog(taskId: string, message: string, level: 'info' | 'error') {
     logs.value.push({
@@ -40,7 +41,7 @@ export const useLogsStore = defineStore('logs', () => {
     if (isListening.value) return
     isListening.value = true
     
-    await listen<LogEvent>('download-log', (event) => {
+    unlisten = await listen<LogEvent>('download-log', (event) => {
       const { id, message, level } = event.payload
       addLog(id, message, level as 'info' | 'error')
     })
@@ -54,5 +55,11 @@ export const useLogsStore = defineStore('logs', () => {
   const autoScroll = ref(true)
   const scrollTop = ref(0)
 
-  return { logs, addLog, initListener, clearLogs, autoScroll, scrollTop }
+  function disposeListener() {
+    unlisten?.()
+    unlisten = null
+    isListening.value = false
+  }
+
+  return { logs, addLog, initListener, clearLogs, disposeListener, autoScroll, scrollTop }
 })
diff --git a/src/stores/queue.ts b/src/stores/queue.ts
index 4e01d92..39499b8 100644
--- a/src/stores/queue.ts
+++ b/src/stores/queue.ts
@@ -22,6 +22,7 @@ interface ProgressEvent {
 export const useQueueStore = defineStore('queue', () => {
   const tasks = ref<DownloadTask[]>([])
   const isListening = ref(false)
+  let unlisten: (() => void) | null = null
 
   function addTask(task: DownloadTask) {
     tasks.value.push(task)
@@ -31,7 +32,7 @@ export const useQueueStore = defineStore('queue', () => {
     if (isListening.value) return
     isListening.value = true
     
-    await listen<ProgressEvent>('download-progress', (event) => {
+    unlisten = await listen<ProgressEvent>('download-progress', (event) => {
       const { id, progress, speed, status } = event.payload
       const task = tasks.value.find(t => t.id === id)
       if (task) {
@@ -43,5 +44,11 @@ export const useQueueStore = defineStore('queue', () => {
     })
   }
 
-  return { tasks, addTask, initListener }
+  function disposeListener() {
+    unlisten?.()
+    unlisten = null
+    isListening.value = false
+  }
+
+  return { tasks, addTask, initListener, disposeListener }
 })
diff --git a/src/stores/settings.ts b/src/stores/settings.ts
index 54c41f1..911a31c 100644
--- a/src/stores/settings.ts
+++ b/src/stores/settings.ts
@@ -22,6 +22,9 @@ export const useSettingsStore = defineStore('settings', () => {
   const quickjsVersion = ref('Checking...')
   const ffmpegVersion = ref('Checking...')
   const isInitializing = ref(true)
+  const hasInitialized = ref(false)
+  let mediaQuery: MediaQueryList | null = null
+  let mediaListener: (() => void) | null = null
 
   async function loadSettings() {
     try {
@@ -43,11 +46,13 @@ export const useSettingsStore = defineStore('settings', () => {
   }
 
   async function initYtdlp() {
+    if (hasInitialized.value) return
     try {
         isInitializing.value = true
         // check/download
         await invoke('init_ytdlp')
         await refreshVersions()
+        hasInitialized.value = true
     } catch (e) {
         console.error(e)
         ytdlpVersion.value = 'Error'
@@ -59,9 +64,15 @@ export const useSettingsStore = defineStore('settings', () => {
   }
 
   async function refreshVersions() {
-      ytdlpVersion.value = await invoke('get_ytdlp_version')
-      quickjsVersion.value = await invoke('get_quickjs_version')
-      ffmpegVersion.value = await invoke('get_ffmpeg_version')
+      const [ytdlp, quickjs, ffmpeg] = await Promise.allSettled([
+        invoke<string>('get_ytdlp_version'),
+        invoke<string>('get_quickjs_version'),
+        invoke<string>('get_ffmpeg_version')
+      ])
+
+      ytdlpVersion.value = ytdlp.status === 'fulfilled' ? ytdlp.value : 'Error'
+      quickjsVersion.value = quickjs.status === 'fulfilled' ? quickjs.value : 'Error'
+      ffmpegVersion.value = ffmpeg.status === 'fulfilled' ? ffmpeg.value : 'Error'
   }
 
   function applyTheme(theme: string) {
@@ -74,12 +85,36 @@ export const useSettingsStore = defineStore('settings', () => {
     }
   }
 
-  // Watch system preference changes if theme is system
-  window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
+  function initThemeListener() {
+    if (mediaQuery) return
+    mediaQuery = window.matchMedia('(prefers-color-scheme: dark)')
+    mediaListener = () => {
       if (settings.value.theme === 'system') {
-          applyTheme('system')
+        applyTheme('system')
       }
-  })
+    }
+    mediaQuery.addEventListener('change', mediaListener)
+  }
 
-  return { settings, loadSettings, save, initYtdlp, refreshVersions, ytdlpVersion, quickjsVersion, ffmpegVersion, isInitializing }
-})
\ No newline at end of file
+  function disposeThemeListener() {
+    if (mediaQuery && mediaListener) {
+      mediaQuery.removeEventListener('change', mediaListener)
+    }
+    mediaQuery = null
+    mediaListener = null
+  }
+
+  return {
+    settings,
+    loadSettings,
+    save,
+    initYtdlp,
+    refreshVersions,
+    initThemeListener,
+    disposeThemeListener,
+    ytdlpVersion,
+    quickjsVersion,
+    ffmpegVersion,
+    isInitializing
+  }
+})
diff --git a/src/types/media.ts b/src/types/media.ts
new file mode 100644
index 0000000..a08652d
--- /dev/null
+++ b/src/types/media.ts
@@ -0,0 +1,24 @@
+export interface VideoMetadata {
+  id: string
+  title: string
+  thumbnail: string
+  duration?: number | null
+  uploader?: string | null
+  url?: string | null
+}
+
+export interface SelectableVideoMetadata extends VideoMetadata {
+  selected: boolean
+}
+
+export interface PlaylistMetadata {
+  id: string
+  title: string
+  entries: SelectableVideoMetadata[]
+}
+
+export type AnalysisMetadata = VideoMetadata | PlaylistMetadata
+
+export function isPlaylistMetadata(metadata: AnalysisMetadata | null): metadata is PlaylistMetadata {
+  return !!metadata && Array.isArray((metadata as PlaylistMetadata).entries)
+}
diff --git a/src/utils/analysis.ts b/src/utils/analysis.ts
new file mode 100644
index 0000000..dad8294
--- /dev/null
+++ b/src/utils/analysis.ts
@@ -0,0 +1,45 @@
+import type { PlaylistMetadata, SelectableVideoMetadata, VideoMetadata } from '../types/media'
+
+export function detectMixUrl(url: string): boolean {
+  return url.includes('v=') && url.includes('list=')
+}
+
+export function stripPlaylistContext(rawUrl: string): string {
+  try {
+    const url = new URL(rawUrl)
+    url.searchParams.delete('list')
+    url.searchParams.delete('index')
+    url.searchParams.delete('start_radio')
+    return url.toString()
+  } catch {
+    return rawUrl
+      .replace(/[?&]list=[^&]+/g, '')
+      .replace(/[?&]index=[^&]+/g, '')
+      .replace(/[?&]start_radio=[^&]+/g, '')
+      .replace('?&', '?')
+      .replace(/&&+/g, '&')
+      .replace(/[?&]$/, '')
+  }
+}
+
+export function isLikelyHttpUrl(input: string): boolean {
+  return input.startsWith('http://') || input.startsWith('https://')
+}
+
+export function normalizeBatchLinks(input: string): string[] {
+  return input
+    .split('\n')
+    .map(line => line.trim())
+    .filter(Boolean)
+    .filter(isLikelyHttpUrl)
+    .filter(link => !link.includes('list=') || detectMixUrl(link))
+    .map(link => detectMixUrl(link) ? stripPlaylistContext(link) : link)
+}
+
+export function toSelectableEntries(entries: VideoMetadata[]): SelectableVideoMetadata[] {
+  return entries.map(entry => ({ ...entry, selected: true }))
+}
+
+export function countSelectedEntries(metadata: PlaylistMetadata | null): number {
+  return metadata?.entries.filter(entry => entry.selected).length ?? 0
+}
diff --git a/src/views/History.vue b/src/views/History.vue
index d258373..c4de11b 100644
--- a/src/views/History.vue
+++ b/src/views/History.vue
@@ -11,6 +11,7 @@ interface HistoryItem {
   thumbnail: string
   url: string
   output_path: string
+  file_path?: string | null
   timestamp: string
   status: string
   format: string
@@ -114,7 +115,7 @@ onMounted(loadHistory)
                         </td>
                         <td class="px-6 py-4 text-right whitespace-nowrap">
                             <button 
-                                @click="openFolder(item.output_path)"
+                                @click="openFolder(item.file_path || item.output_path)"
                                 class="p-2 text-gray-400 hover:text-blue-600 hover:bg-blue-50 dark:hover:bg-blue-900/20 rounded-lg transition-colors"
                                 title="打开输出文件夹"
                             >
@@ -134,4 +135,4 @@ onMounted(loadHistory)
         </div>
     </div>
   </div>
-</template>
\ No newline at end of file
+</template>
diff --git a/src/views/Home.vue b/src/views/Home.vue
index 0ff15c0..342097c 100644
--- a/src/views/Home.vue
+++ b/src/views/Home.vue
@@ -1,11 +1,20 @@
 <script setup lang="ts">
-import { watch } from 'vue'
+import { computed, watch } from 'vue'
 import { invoke } from '@tauri-apps/api/core'
 import { Loader2, List, Link } from 'lucide-vue-next'
 import { useQueueStore } from '../stores/queue'
 import { useSettingsStore } from '../stores/settings'
 import { useAnalysisStore } from '../stores/analysis'
 import AppSelect from '../components/ui/AppSelect.vue'
+import type { AnalysisMetadata, PlaylistMetadata, VideoMetadata } from '../types/media'
+import { isPlaylistMetadata } from '../types/media'
+import {
+  countSelectedEntries,
+  detectMixUrl,
+  normalizeBatchLinks,
+  stripPlaylistContext,
+  toSelectableEntries
+} from '../utils/analysis'
 
 const queueStore = useQueueStore()
 const settingsStore = useSettingsStore()
@@ -38,169 +47,135 @@ const audioFormatOptions = [
   { label: 'FLAC', value: 'flac' },
 ]
 
-// Sync default download path if not set
+const playlistMetadata = computed<PlaylistMetadata | null>(() => {
+  return isPlaylistMetadata(analysisStore.metadata) ? analysisStore.metadata : null
+})
+
+const singleMetadata = computed<VideoMetadata | null>(() => {
+  return analysisStore.metadata && !isPlaylistMetadata(analysisStore.metadata)
+    ? analysisStore.metadata
+    : null
+})
+
+const selectedCount = computed(() => countSelectedEntries(playlistMetadata.value))
+
 watch(() => settingsStore.settings.download_path, (newPath) => {
-    if (newPath && !analysisStore.options.output_path) {
-      analysisStore.options.output_path = newPath
-    }
+  if (newPath && !analysisStore.options.output_path) {
+    analysisStore.options.output_path = newPath
+  }
 }, { immediate: true })
 
-// Detect Mix URL
 watch(() => analysisStore.url, (newUrl) => {
-    if (newUrl && newUrl.includes('v=') && newUrl.includes('list=')) {
-        analysisStore.isMix = true
-    } else {
-        analysisStore.isMix = false
-        // Reset scanMix if URL changes to non-mix
-        analysisStore.scanMix = false 
-    }
+  analysisStore.isMix = !!newUrl && detectMixUrl(newUrl)
+  if (!analysisStore.isMix) {
+    analysisStore.scanMix = false
+  }
 })
 
-// Reset format to original when toggling audio-only mode
 watch(() => analysisStore.options.is_audio_only, () => {
-    analysisStore.options.output_format = 'original'
+  analysisStore.options.output_format = 'original'
 })
 
-async function processThumbnail(url: string | undefined): Promise<string | undefined> {
-    if (!url) return undefined;
-    // Check if it's an Instagram URL or similar that needs proxying
-    if (url.includes('instagram.com') || url.includes('fbcdn.net') || url.includes('cdninstagram.com')) {
-        try {
-            return await invoke<string>('fetch_image', { url });
-        } catch (e) {
-            console.warn('Thumbnail fetch failed, falling back to URL', e);
-            return url;
-        }
+async function processThumbnail(url: string | undefined | null): Promise<string | undefined> {
+  if (!url) return undefined
+
+  if (url.includes('instagram.com') || url.includes('fbcdn.net') || url.includes('cdninstagram.com')) {
+    try {
+      return await invoke<string>('fetch_image', { url })
+    } catch (error) {
+      console.warn('Thumbnail fetch failed, falling back to URL', error)
+      return url
     }
-    return url;
+  }
+
+  return url
 }
 
-async function processMetadataThumbnails(metadata: any) {
-    if (!metadata) return;
-    
-    // Process single video thumbnail
-    if (metadata.thumbnail) {
-        metadata.thumbnail = await processThumbnail(metadata.thumbnail);
+async function processMetadataThumbnails(metadata: AnalysisMetadata) {
+  if (isPlaylistMetadata(metadata)) {
+    await Promise.all(metadata.entries.map(async (entry) => {
+      if (entry.thumbnail) {
+        entry.thumbnail = await processThumbnail(entry.thumbnail) ?? entry.thumbnail
+      }
+    }))
+    return
+  }
+
+  if (metadata.thumbnail) {
+    metadata.thumbnail = await processThumbnail(metadata.thumbnail) ?? metadata.thumbnail
+  }
+}
+
+async function analyzeBatchLinks() {
+  const validLinks = normalizeBatchLinks(analysisStore.url)
+
+  if (validLinks.length === 0) {
+    throw new Error('未找到有效的单个视频链接（已忽略纯播放列表链接）。')
+  }
+
+  const results: VideoMetadata[] = []
+
+  for (const link of validLinks) {
+    try {
+      const res = await invoke<AnalysisMetadata>('fetch_metadata', { url: link, parseMixPlaylist: false })
+      if (!isPlaylistMetadata(res)) {
+        results.push(res)
+      }
+    } catch (error) {
+      console.warn(`Failed to parse ${link}`, error)
     }
-    
-    // Process playlist entries
-    if (metadata.entries && Array.isArray(metadata.entries)) {
-        await Promise.all(metadata.entries.map(async (entry: any) => {
-            if (entry.thumbnail) {
-                entry.thumbnail = await processThumbnail(entry.thumbnail);
-            }
-        }));
+  }
+
+  if (results.length === 0) {
+    throw new Error('所有链接解析失败或均为播放列表。')
+  }
+
+  await Promise.all(results.map(result => processMetadataThumbnails(result)))
+
+  analysisStore.metadata = {
+    id: `batch_download_${Date.now()}`,
+    title: `批量解析结果 (${results.length} 个视频)`,
+    entries: toSelectableEntries(results)
+  }
+}
+
+async function analyzeSingleLink() {
+  let urlToScan = analysisStore.url
+  let parseMix = false
+
+  if (analysisStore.isMix) {
+    if (analysisStore.scanMix) {
+      parseMix = true
+    } else {
+      urlToScan = stripPlaylistContext(urlToScan)
     }
+  }
+
+  const res = await invoke<AnalysisMetadata>('fetch_metadata', { url: urlToScan, parseMixPlaylist: parseMix })
+  await processMetadataThumbnails(res)
+
+  if (isPlaylistMetadata(res)) {
+    res.entries = toSelectableEntries(res.entries)
+  }
+
+  analysisStore.metadata = res
 }
 
 async function analyze() {
   if (!analysisStore.url) return
+
   analysisStore.loading = true
   analysisStore.error = ''
   analysisStore.metadata = null
-  
+
   try {
     if (analysisStore.isBatchMode) {
-        // Batch Mode Logic
-        const lines = analysisStore.url.split('\n').map(l => l.trim()).filter(l => l);
-        const validLinks = lines.filter(l => {
-            if (!(l.startsWith('http://') || l.startsWith('https://'))) return false;
-            
-            // Allow if it has NO list param
-            if (!l.includes('list=')) return true;
-
-            // Allow if it has list param BUT ALSO has v= (video in playlist/mix)
-            if (l.includes('list=') && l.includes('v=')) return true;
-
-            // Otherwise ignore (pure playlist)
-            return false;
-        });
-
-        if (validLinks.length === 0) {
-             throw new Error("未找到有效的单个视频链接（已忽略纯播放列表链接）。");
-        }
-
-        const results: any[] = [];
-        
-        // Process sequentially to be safe
-        for (let link of validLinks) {
-            try {
-                // If it's a mix/playlist context (has v= and list=), strip the list param to treat as single video
-                if (link.includes('list=') && link.includes('v=')) {
-                     try {
-                         const u = new URL(link);
-                         u.searchParams.delete('list');
-                         u.searchParams.delete('index');
-                         u.searchParams.delete('start_radio');
-                         link = u.toString();
-                     } catch (e) {
-                         link = link.replace(/&list=[^&]+/, '');
-                     }
-                }
-
-                // Ensure we don't accidentally trigger mix parsing on single links if logic fails
-                const res = await invoke<any>('fetch_metadata', { url: link, parseMixPlaylist: false });
-                
-                // Only add if it's a single video (no entries)
-                if (!res.entries) {
-                    results.push(res);
-                }
-            } catch (e) {
-                console.warn(`Failed to parse ${link}`, e);
-            }
-        }
-
-        if (results.length === 0) {
-             throw new Error("所有链接解析失败或均为播放列表。");
-        }
-
-        // Process thumbnails for batch results
-        await Promise.all(results.map(r => processMetadataThumbnails(r)));
-
-        // Construct synthetic playlist
-        analysisStore.metadata = {
-            id: 'batch_download_' + Date.now(),
-            title: `批量解析结果 (${results.length} 个视频)`,
-            entries: results.map(e => ({ ...e, selected: true }))
-        };
-
+      await analyzeBatchLinks()
     } else {
-        // Single Link Mode
-        let urlToScan = analysisStore.url;
-        let parseMix = false;
-
-        if (analysisStore.isMix) {
-            if (analysisStore.scanMix) {
-                 // Keep URL as is, tell backend to limit scan
-                 parseMix = true;
-            } else {
-                 // Strip list param
-                 try {
-                     const u = new URL(urlToScan);
-                     u.searchParams.delete('list');
-                     u.searchParams.delete('index');
-                     u.searchParams.delete('start_radio');
-                     urlToScan = u.toString();
-                 } catch (e) {
-                     // Fallback regex if URL parsing fails
-                     urlToScan = urlToScan.replace(/&list=[^&]+/, '');
-                 }
-            }
-        }
-
-        const res = await invoke<any>('fetch_metadata', { url: urlToScan, parseMixPlaylist: parseMix })
-        
-        await processMetadataThumbnails(res);
-        
-        // Initialize selected state for playlist entries
-        if (res.entries) {
-            res.entries = res.entries.map((e: any) => ({ ...e, selected: true }))
-        }
-        
-        analysisStore.metadata = res
+      await analyzeSingleLink()
     }
-  } catch (e: any) {
-    analysisStore.error = e.toString()
+  } catch (error: unknown) {
+    analysisStore.error = error instanceof Error ? error.message : String(error)
   } finally {
     analysisStore.loading = false
   }
@@ -208,78 +183,63 @@ async function analyze() {
 
 async function startDownload() {
   if (!analysisStore.metadata) return
-  
-  // Ensure path is set
+
   if (!analysisStore.options.output_path) {
-      analysisStore.options.output_path = settingsStore.settings.download_path
+    analysisStore.options.output_path = settingsStore.settings.download_path
   }
 
-  // Ensure cookies path is set from settings
   analysisStore.options.cookies_path = settingsStore.settings.cookies_path || ''
 
   try {
-      if (analysisStore.metadata.entries) {
-          // Playlist Download
-          const selectedEntries = analysisStore.metadata.entries.filter((e: any) => e.selected)
-          
-          if (selectedEntries.length === 0) {
-              analysisStore.error = "请至少选择一个要下载的视频。"
-              return
-          }
+    if (playlistMetadata.value) {
+      const selectedEntries = playlistMetadata.value.entries.filter(entry => entry.selected)
 
-          for (const entry of selectedEntries) {
-              const videoUrl = entry.url || `https://www.youtube.com/watch?v=${entry.id}`
-              const id = await invoke<string>('start_download', { 
-                  url: videoUrl,
-                  options: analysisStore.options,
-                  metadata: entry // Pass the individual video metadata
-              })
+      if (selectedEntries.length === 0) {
+        analysisStore.error = '请至少选择一个要下载的视频。'
+        return
+      }
 
-              queueStore.addTask({
-                  id,
-                  title: entry.title,
-                  thumbnail: entry.thumbnail,
-                  progress: 0,
-                  speed: '等待中...',
-                  status: 'pending'
-              })
-          }
-      } else {
-        // Single Video Download
-        let urlToDownload = analysisStore.url;
-        // Clean URL if it was a mix but we didn't scan it as one
-        if (analysisStore.isMix && !analysisStore.scanMix) {
-             try {
-                const u = new URL(urlToDownload);
-                u.searchParams.delete('list');
-                u.searchParams.delete('index');
-                u.searchParams.delete('start_radio');
-                urlToDownload = u.toString();
-            } catch (e) {
-                urlToDownload = urlToDownload.replace(/&list=[^&]+/, '');
-            }
-        }
-
-        const id = await invoke<string>('start_download', { 
-            url: urlToDownload,
-            options: analysisStore.options,
-            metadata: analysisStore.metadata
+      for (const entry of selectedEntries) {
+        const videoUrl = entry.url || `https://www.youtube.com/watch?v=${entry.id}`
+        const id = await invoke<string>('start_download', {
+          url: videoUrl,
+          options: analysisStore.options,
+          metadata: entry
         })
 
-          queueStore.addTask({
-              id,
-              title: analysisStore.metadata.title,
-              thumbnail: analysisStore.metadata.thumbnail,
-              progress: 0,
-              speed: '等待中...',
-              status: 'pending'
-          })
+        queueStore.addTask({
+          id,
+          title: entry.title,
+          thumbnail: entry.thumbnail,
+          progress: 0,
+          speed: '等待中...',
+          status: 'pending'
+        })
       }
-      
-      // Reset state after successful download start
-      analysisStore.reset()
-  } catch (e: any) {
-      analysisStore.error = "下载启动失败： " + e.toString()
+    } else if (singleMetadata.value) {
+      const urlToDownload = analysisStore.isMix && !analysisStore.scanMix
+        ? stripPlaylistContext(analysisStore.url)
+        : analysisStore.url
+
+      const id = await invoke<string>('start_download', {
+        url: urlToDownload,
+        options: analysisStore.options,
+        metadata: singleMetadata.value
+      })
+
+      queueStore.addTask({
+        id,
+        title: singleMetadata.value.title,
+        thumbnail: singleMetadata.value.thumbnail,
+        progress: 0,
+        speed: '等待中...',
+        status: 'pending'
+      })
+    }
+
+    analysisStore.reset()
+  } catch (error: unknown) {
+    analysisStore.error = `下载启动失败： ${error instanceof Error ? error.message : String(error)}`
   }
 }
 </script>
@@ -288,253 +248,223 @@ async function startDownload() {
   <div class="max-w-5xl mx-auto p-8">
     <header class="mb-8">
       <h1 class="text-3xl font-bold text-zinc-900 dark:text-white">新建下载</h1>
-      <!-- <p class="text-gray-500 dark:text-gray-400 mt-2">粘贴 URL 开始下载媒体。</p> -->
     </header>
 
-    <!-- Input Section -->
     <div class="bg-white dark:bg-zinc-900 p-6 rounded-2xl shadow-sm border border-gray-200 dark:border-zinc-800 mb-8">
-      
-      <!-- Input Area with Batch Toggle -->
       <div class="flex flex-col gap-3">
         <div class="flex justify-end mb-1">
-             <button 
-                @click="analysisStore.isBatchMode = !analysisStore.isBatchMode"
-                class="text-xs font-medium flex items-center gap-1.5 px-3 py-1.5 rounded-lg transition-colors"
-                :class="analysisStore.isBatchMode ? 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400' : 'bg-gray-100 text-gray-600 dark:bg-zinc-800 dark:text-gray-400 hover:bg-gray-200 dark:hover:bg-zinc-700'"
-             >
-                <List v-if="analysisStore.isBatchMode" class="w-3.5 h-3.5" />
-                <Link v-else class="w-3.5 h-3.5" />
-                {{ analysisStore.isBatchMode ? '单链接模式' : '批量输入模式' }}
-             </button>
+          <button
+            @click="analysisStore.isBatchMode = !analysisStore.isBatchMode"
+            class="text-xs font-medium flex items-center gap-1.5 px-3 py-1.5 rounded-lg transition-colors"
+            :class="analysisStore.isBatchMode ? 'bg-blue-100 text-blue-700 dark:bg-blue-900/30 dark:text-blue-400' : 'bg-gray-100 text-gray-600 dark:bg-zinc-800 dark:text-gray-400 hover:bg-gray-200 dark:hover:bg-zinc-700'"
+          >
+            <List v-if="analysisStore.isBatchMode" class="w-3.5 h-3.5" />
+            <Link v-else class="w-3.5 h-3.5" />
+            {{ analysisStore.isBatchMode ? '单链接模式' : '批量输入模式' }}
+          </button>
         </div>
 
         <div class="flex gap-4 items-start">
-            <div class="flex-1 relative">
-                <textarea 
-                  v-if="analysisStore.isBatchMode"
-                  v-model="analysisStore.url" 
-                  placeholder="每行输入一个链接..." 
-                  rows="5"
-                  class="w-full bg-gray-50 dark:bg-zinc-800 border-none rounded-xl px-4 py-3 text-zinc-900 dark:text-white focus:ring-2 focus:ring-blue-500 outline-none resize-none font-mono text-sm leading-relaxed"
-                ></textarea>
-                <input 
-                  v-else
-                  v-model="analysisStore.url"  
-                  type="text" 
-                  placeholder="https://..." 
-                  class="w-full bg-gray-50 dark:bg-zinc-800 border-none rounded-xl px-4 py-3 text-zinc-900 dark:text-white focus:ring-2 focus:ring-blue-500 outline-none"
-                  @keyup.enter="analyze"
-                />
-            </div>
-            
-            <button 
-              @click="analyze"
-              :disabled="analysisStore.loading"
-              class="bg-blue-600 hover:bg-blue-700 text-white px-6 py-3 rounded-xl font-medium transition-colors disabled:opacity-50 flex items-center gap-2 shrink-0 h-[48px]"
-            >
-              <Loader2 v-if="analysisStore.loading" class="animate-spin w-5 h-5" />
-              <span v-else>解析</span>
-            </button>
+          <div class="flex-1 relative">
+            <textarea
+              v-if="analysisStore.isBatchMode"
+              v-model="analysisStore.url"
+              placeholder="每行输入一个链接..."
+              rows="5"
+              class="w-full bg-gray-50 dark:bg-zinc-800 border-none rounded-xl px-4 py-3 text-zinc-900 dark:text-white focus:ring-2 focus:ring-blue-500 outline-none resize-none font-mono text-sm leading-relaxed"
+            ></textarea>
+            <input
+              v-else
+              v-model="analysisStore.url"
+              type="text"
+              placeholder="https://..."
+              class="w-full bg-gray-50 dark:bg-zinc-800 border-none rounded-xl px-4 py-3 text-zinc-900 dark:text-white focus:ring-2 focus:ring-blue-500 outline-none"
+              @keyup.enter="analyze"
+            />
+          </div>
+
+          <button
+            @click="analyze"
+            :disabled="analysisStore.loading"
+            class="bg-blue-600 hover:bg-blue-700 text-white px-6 py-3 rounded-xl font-medium transition-colors disabled:opacity-50 flex items-center gap-2 shrink-0 h-[48px]"
+          >
+            <Loader2 v-if="analysisStore.loading" class="animate-spin w-5 h-5" />
+            <span v-else>解析</span>
+          </button>
         </div>
       </div>
-      
-      <!-- Mix Toggle (Only in Single Mode) -->
+
       <div v-if="!analysisStore.isBatchMode && analysisStore.isMix" class="mt-4 flex items-center gap-3">
-          <button 
-            @click="analysisStore.scanMix = !analysisStore.scanMix"
-            class="w-12 h-6 rounded-full relative transition-colors duration-200 ease-in-out flex-shrink-0"
-            :class="analysisStore.scanMix ? 'bg-blue-600' : 'bg-gray-300 dark:bg-zinc-600'"
-          >
-            <span 
-              class="absolute top-1 left-1 w-4 h-4 bg-white rounded-full transition-transform duration-200"
-              :class="analysisStore.scanMix ? 'translate-x-6' : 'translate-x-0'"
-            />
-          </button>
-          <span class="text-sm font-medium text-zinc-700 dark:text-gray-300">解析播放列表 (前20项)</span>
+        <button
+          @click="analysisStore.scanMix = !analysisStore.scanMix"
+          class="w-12 h-6 rounded-full relative transition-colors duration-200 ease-in-out flex-shrink-0"
+          :class="analysisStore.scanMix ? 'bg-blue-600' : 'bg-gray-300 dark:bg-zinc-600'"
+        >
+          <span
+            class="absolute top-1 left-1 w-4 h-4 bg-white rounded-full transition-transform duration-200"
+            :class="analysisStore.scanMix ? 'translate-x-6' : 'translate-x-0'"
+          />
+        </button>
+        <span class="text-sm font-medium text-zinc-700 dark:text-gray-300">解析播放列表 (前20项)</span>
       </div>
 
       <p v-if="analysisStore.error" class="mt-3 text-red-500 text-sm">{{ analysisStore.error }}</p>
     </div>
 
-    <!-- Analysis Result -->
     <div v-if="analysisStore.metadata" class="bg-white dark:bg-zinc-900 rounded-2xl shadow-sm border border-gray-200 dark:border-zinc-800 overflow-hidden mb-8">
-      
-      <!-- Playlist Header / Global Controls -->
-      <div v-if="analysisStore.metadata.entries" class="p-6 border-b border-gray-200 dark:border-zinc-800">
-          <div class="flex items-start justify-between mb-4">
-              <div>
-                  <h2 class="text-xl font-bold text-zinc-900 dark:text-white">{{ analysisStore.metadata.title }}</h2>
-                  <p class="text-blue-500 mt-1 font-medium">{{ analysisStore.metadata.entries.length }} 个视频</p>
-              </div>
+      <div v-if="playlistMetadata" class="p-6 border-b border-gray-200 dark:border-zinc-800">
+        <div class="flex items-start justify-between mb-4">
+          <div>
+            <h2 class="text-xl font-bold text-zinc-900 dark:text-white">{{ playlistMetadata.title }}</h2>
+            <p class="text-blue-500 mt-1 font-medium">{{ playlistMetadata.entries.length }} 个视频</p>
           </div>
-          
-          <!-- Global Options Bar -->
-          <div class="flex flex-col md:flex-row items-center justify-between gap-4 bg-gray-50 dark:bg-zinc-800/50 p-4 rounded-xl">
-             
-             <!-- Left: Selection Controls -->
-             <div class="flex items-center gap-2 w-full md:w-auto">
-                 <button @click="analysisStore.setAllEntries(true)" class="text-base font-medium px-3 py-1.5 rounded-lg bg-white dark:bg-zinc-700 hover:bg-gray-100 dark:hover:bg-zinc-600 text-zinc-700 dark:text-gray-200 border border-gray-200 dark:border-zinc-600 transition-colors shadow-sm">全选</button>
-                 <button @click="analysisStore.setAllEntries(false)" class="text-base font-medium px-3 py-1.5 rounded-lg bg-white dark:bg-zinc-700 hover:bg-gray-100 dark:hover:bg-zinc-600 text-zinc-700 dark:text-gray-200 border border-gray-200 dark:border-zinc-600 transition-colors shadow-sm">取消全选</button>
-                 <button @click="analysisStore.invertSelection()" class="text-base font-medium px-3 py-1.5 rounded-lg bg-white dark:bg-zinc-700 hover:bg-gray-100 dark:hover:bg-zinc-600 text-zinc-700 dark:text-gray-200 border border-gray-200 dark:border-zinc-600 transition-colors shadow-sm">反选</button>
-             </div>
+        </div>
 
-             <!-- Right: Settings -->
-             <div class="flex items-center gap-6 w-full md:w-auto justify-end">
-                <!-- Audio Only Toggle -->
-                <div class="flex items-center gap-x-4 p-3 bg-gray-50 dark:bg-zinc-800 rounded-xl">
-                    <span class="font-medium text-base text-zinc-700 dark:text-gray-300">仅音频</span>
-                    <button 
-                      @click="analysisStore.options.is_audio_only = !analysisStore.options.is_audio_only"
-                      class="w-12 h-6 rounded-full relative transition-colors duration-200 ease-in-out"
-                      :class="analysisStore.options.is_audio_only ? 'bg-blue-600' : 'bg-gray-300 dark:bg-zinc-600'"
-                    >
-                      <span 
-                        class="absolute top-1 left-1 w-4 h-4 bg-white rounded-full transition-transform duration-200"
-                        :class="analysisStore.options.is_audio_only ? 'translate-x-6' : 'translate-x-0'"
-                      />
-                    </button>
-                </div>
-
-                <!-- Quality Dropdown -->
-                <div class="flex items-center gap-3">
-                     <div class="w-44">
-                        <AppSelect 
-                          v-model="analysisStore.options.quality"
-                          :options="qualityOptions"
-                          :disabled="analysisStore.options.is_audio_only"
-                        />
-                     </div>
-                </div>
-
-                <!-- Format Dropdown -->
-                <div class="flex items-center gap-3">
-                     <div class="w-48">
-                        <AppSelect 
-                          v-model="analysisStore.options.output_format"
-                          :options="analysisStore.options.is_audio_only ? audioFormatOptions : videoFormatOptions"
-                        />
-                     </div>
-                </div>
-             </div>
+        <div class="flex flex-col md:flex-row items-center justify-between gap-4 bg-gray-50 dark:bg-zinc-800/50 p-4 rounded-xl">
+          <div class="flex items-center gap-2 w-full md:w-auto">
+            <button @click="analysisStore.setAllEntries(true)" class="text-base font-medium px-3 py-1.5 rounded-lg bg-white dark:bg-zinc-700 hover:bg-gray-100 dark:hover:bg-zinc-600 text-zinc-700 dark:text-gray-200 border border-gray-200 dark:border-zinc-600 transition-colors shadow-sm">全选</button>
+            <button @click="analysisStore.setAllEntries(false)" class="text-base font-medium px-3 py-1.5 rounded-lg bg-white dark:bg-zinc-700 hover:bg-gray-100 dark:hover:bg-zinc-600 text-zinc-700 dark:text-gray-200 border border-gray-200 dark:border-zinc-600 transition-colors shadow-sm">取消全选</button>
+            <button @click="analysisStore.invertSelection()" class="text-base font-medium px-3 py-1.5 rounded-lg bg-white dark:bg-zinc-700 hover:bg-gray-100 dark:hover:bg-zinc-600 text-zinc-700 dark:text-gray-200 border border-gray-200 dark:border-zinc-600 transition-colors shadow-sm">反选</button>
           </div>
-      </div>
 
-      <!-- Video List (Playlist Mode) -->
-      <div v-if="analysisStore.metadata.entries" class="max-h-[500px] overflow-y-auto p-2 space-y-2 bg-gray-50/50 dark:bg-black/20">
-          <div 
-            v-for="entry in analysisStore.metadata.entries" 
-            :key="entry.id" 
-            class="flex items-center gap-4 p-3 rounded-xl hover:bg-white dark:hover:bg-zinc-800 transition-colors border border-transparent hover:border-gray-200 dark:hover:border-zinc-700 group"
-            :class="entry.selected ? 'opacity-100' : 'opacity-60 grayscale'"
-          >
-              <!-- Checkbox -->
-              <button 
-                @click="entry.selected = !entry.selected"
-                class="w-6 h-6 rounded-lg border-2 flex items-center justify-center transition-colors shrink-0"
-                :class="entry.selected ? 'bg-blue-600 border-blue-600 text-white' : 'border-gray-300 dark:border-zinc-600 hover:border-blue-400'"
+          <div class="flex items-center gap-6 w-full md:w-auto justify-end">
+            <div class="flex items-center gap-x-4 p-3 bg-gray-50 dark:bg-zinc-800 rounded-xl">
+              <span class="font-medium text-base text-zinc-700 dark:text-gray-300">仅音频</span>
+              <button
+                @click="analysisStore.options.is_audio_only = !analysisStore.options.is_audio_only"
+                class="w-12 h-6 rounded-full relative transition-colors duration-200 ease-in-out"
+                :class="analysisStore.options.is_audio_only ? 'bg-blue-600' : 'bg-gray-300 dark:bg-zinc-600'"
               >
-                 <svg v-if="entry.selected" xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" viewBox="0 0 20 20" fill="currentColor">
-                    <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd" />
-                 </svg>
+                <span
+                  class="absolute top-1 left-1 w-4 h-4 bg-white rounded-full transition-transform duration-200"
+                  :class="analysisStore.options.is_audio_only ? 'translate-x-6' : 'translate-x-0'"
+                />
               </button>
+            </div>
 
-              <!-- Thumb -->
-              <img :src="entry.thumbnail || '/placeholder.png'" class="w-24 h-14 object-cover rounded-lg bg-gray-200 dark:bg-zinc-700 shrink-0" />
-
-              <!-- Info -->
-              <div class="flex-1 min-w-0">
-                  <h4 class="font-medium text-zinc-900 dark:text-white truncate text-sm" :title="entry.title">{{ entry.title }}</h4>
-                  <p class="text-xs text-gray-500 dark:text-gray-400 mt-0.5">
-                      {{ entry.duration ? Math.floor(entry.duration / 60) + ':' + String(Math.floor(entry.duration % 60)).padStart(2, '0') : '' }}
-                      <span v-if="entry.uploader" class="mx-1">•</span> {{ entry.uploader }}
-                  </p>
-              </div>
-          </div>
-      </div>
-
-      <!-- Single Video Layout -->
-      <div v-else class="p-6 flex flex-col md:flex-row gap-6">
-        <!-- Thumbnail -->
-        <img :src="analysisStore.metadata.thumbnail || '/placeholder.png'" class="w-full md:w-64 aspect-video object-cover rounded-lg bg-gray-100 dark:bg-zinc-800" />
-        
-        <!-- Details -->
-        <div class="flex-1">
-          <h2 class="text-xl font-bold text-zinc-900 dark:text-white line-clamp-2">{{ analysisStore.metadata.title }}</h2>
-          <p v-if="analysisStore.metadata.uploader" class="text-gray-500 dark:text-gray-400 mt-1">{{ analysisStore.metadata.uploader }}</p>
-          <p v-if="analysisStore.metadata.entries" class="text-blue-500 mt-1 font-medium">{{ analysisStore.metadata.entries.length }} 个视频 (播放列表)</p>
-          
-          <!-- Options -->
-          <div class="grid grid-cols-1 md:grid-cols-3 gap-4 mt-6">
-             <!-- Audio Only Toggle -->
-             <div class="flex items-center justify-between p-3 bg-gray-50 dark:bg-zinc-800 rounded-xl">
-                <span class="font-medium text-base">仅音频</span>
-                <button 
-                  @click="analysisStore.options.is_audio_only = !analysisStore.options.is_audio_only"
-                  class="w-12 h-6 rounded-full relative transition-colors duration-200 ease-in-out"
-                  :class="analysisStore.options.is_audio_only ? 'bg-blue-600' : 'bg-gray-300 dark:bg-zinc-600'"
-                >
-                  <span 
-                    class="absolute top-1 left-1 w-4 h-4 bg-white rounded-full transition-transform duration-200"
-                    :class="analysisStore.options.is_audio_only ? 'translate-x-6' : 'translate-x-0'"
-                  />
-                </button>
-             </div>
-
-             <!-- Quality Dropdown -->
-             <div class="relative">
-                <AppSelect 
+            <div class="flex items-center gap-3">
+              <div class="w-44">
+                <AppSelect
                   v-model="analysisStore.options.quality"
                   :options="qualityOptions"
                   :disabled="analysisStore.options.is_audio_only"
                 />
-             </div>
+              </div>
+            </div>
 
-             <!-- Format Dropdown -->
-             <div class="relative">
-                <AppSelect 
+            <div class="flex items-center gap-3">
+              <div class="w-48">
+                <AppSelect
                   v-model="analysisStore.options.output_format"
                   :options="analysisStore.options.is_audio_only ? audioFormatOptions : videoFormatOptions"
                 />
-             </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      <div v-if="playlistMetadata" class="max-h-[500px] overflow-y-auto p-2 space-y-2 bg-gray-50/50 dark:bg-black/20">
+        <div
+          v-for="entry in playlistMetadata.entries"
+          :key="entry.id"
+          class="flex items-center gap-4 p-3 rounded-xl hover:bg-white dark:hover:bg-zinc-800 transition-colors border border-transparent hover:border-gray-200 dark:hover:border-zinc-700 group"
+          :class="entry.selected ? 'opacity-100' : 'opacity-60 grayscale'"
+        >
+          <button
+            @click="entry.selected = !entry.selected"
+            class="w-6 h-6 rounded-lg border-2 flex items-center justify-center transition-colors shrink-0"
+            :class="entry.selected ? 'bg-blue-600 border-blue-600 text-white' : 'border-gray-300 dark:border-zinc-600 hover:border-blue-400'"
+          >
+            <svg v-if="entry.selected" xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" viewBox="0 0 20 20" fill="currentColor">
+              <path fill-rule="evenodd" d="M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z" clip-rule="evenodd" />
+            </svg>
+          </button>
+
+          <img :src="entry.thumbnail || '/placeholder.png'" class="w-24 h-14 object-cover rounded-lg bg-gray-200 dark:bg-zinc-700 shrink-0" />
+
+          <div class="flex-1 min-w-0">
+            <h4 class="font-medium text-zinc-900 dark:text-white truncate text-sm" :title="entry.title">{{ entry.title }}</h4>
+            <p class="text-xs text-gray-500 dark:text-gray-400 mt-0.5">
+              {{ entry.duration ? Math.floor(entry.duration / 60) + ':' + String(Math.floor(entry.duration % 60)).padStart(2, '0') : '' }}
+              <span v-if="entry.uploader" class="mx-1">•</span> {{ entry.uploader }}
+            </p>
+          </div>
+        </div>
+      </div>
+
+      <div v-else-if="singleMetadata" class="p-6 flex flex-col md:flex-row gap-6">
+        <img :src="singleMetadata.thumbnail || '/placeholder.png'" class="w-full md:w-64 aspect-video object-cover rounded-lg bg-gray-100 dark:bg-zinc-800" />
+
+        <div class="flex-1">
+          <h2 class="text-xl font-bold text-zinc-900 dark:text-white line-clamp-2">{{ singleMetadata.title }}</h2>
+          <p v-if="singleMetadata.uploader" class="text-gray-500 dark:text-gray-400 mt-1">{{ singleMetadata.uploader }}</p>
+
+          <div class="grid grid-cols-1 md:grid-cols-3 gap-4 mt-6">
+            <div class="flex items-center justify-between p-3 bg-gray-50 dark:bg-zinc-800 rounded-xl">
+              <span class="font-medium text-base">仅音频</span>
+              <button
+                @click="analysisStore.options.is_audio_only = !analysisStore.options.is_audio_only"
+                class="w-12 h-6 rounded-full relative transition-colors duration-200 ease-in-out"
+                :class="analysisStore.options.is_audio_only ? 'bg-blue-600' : 'bg-gray-300 dark:bg-zinc-600'"
+              >
+                <span
+                  class="absolute top-1 left-1 w-4 h-4 bg-white rounded-full transition-transform duration-200"
+                  :class="analysisStore.options.is_audio_only ? 'translate-x-6' : 'translate-x-0'"
+                />
+              </button>
+            </div>
+
+            <div class="relative">
+              <AppSelect
+                v-model="analysisStore.options.quality"
+                :options="qualityOptions"
+                :disabled="analysisStore.options.is_audio_only"
+              />
+            </div>
+
+            <div class="relative">
+              <AppSelect
+                v-model="analysisStore.options.output_format"
+                :options="analysisStore.options.is_audio_only ? audioFormatOptions : videoFormatOptions"
+              />
+            </div>
           </div>
         </div>
       </div>
 
       <div class="px-6 py-4 bg-gray-50 dark:bg-zinc-800/50 border-t border-gray-200 dark:border-zinc-800 flex justify-end">
-         <button 
-            @click="startDownload"
-            class="bg-blue-600 hover:bg-blue-700 text-white px-8 py-3 rounded-xl font-bold transition-colors shadow-lg shadow-blue-600/20"
-         >
-            立即下载 {{ analysisStore.metadata.entries ? `(${analysisStore.metadata.entries.filter((e: any) => e.selected).length})` : '' }}
-         </button>
+        <button
+          @click="startDownload"
+          class="bg-blue-600 hover:bg-blue-700 text-white px-8 py-3 rounded-xl font-bold transition-colors shadow-lg shadow-blue-600/20"
+        >
+          立即下载 {{ selectedCount > 0 ? `(${selectedCount})` : '' }}
+        </button>
       </div>
     </div>
 
-    <!-- Active Downloads -->
     <div v-if="queueStore.tasks.length > 0">
-       <h3 class="text-lg font-bold mb-4">进行中的任务</h3>
-       <div class="space-y-3">
-          <!-- Reversed to show newest first -->
-          <div v-for="task in queueStore.tasks.slice().reverse()" :key="task.id" class="bg-white dark:bg-zinc-900 p-4 rounded-xl border border-gray-200 dark:border-zinc-800 flex items-center gap-4">
-             <img :src="task.thumbnail || '/placeholder.png'" class="w-16 h-16 object-cover rounded-lg bg-gray-100 dark:bg-zinc-800" />
-             <div class="flex-1 min-w-0">
-                <div class="flex justify-between mb-1">
-                   <h4 class="font-medium truncate pr-4">{{ task.title }}</h4>
-                   <span class="text-xs font-mono text-gray-500 whitespace-nowrap">
-                      {{ task.status === 'finished' ? '已完成' : (task.status === 'error' ? '失败' : task.speed) }}
-                   </span>
-                </div>
-                <div class="h-2 bg-gray-100 dark:bg-zinc-800 rounded-full overflow-hidden">
-                   <div 
-                      class="h-full transition-all duration-300"
-                      :style="{ width: `${task.progress}%` }"
-                      :class="task.status === 'error' ? 'bg-red-500' : (task.status === 'finished' ? 'bg-green-500' : 'bg-blue-600')"
-                   />
-                </div>
-             </div>
+      <h3 class="text-lg font-bold mb-4">进行中的任务</h3>
+      <div class="space-y-3">
+        <div v-for="task in queueStore.tasks.slice().reverse()" :key="task.id" class="bg-white dark:bg-zinc-900 p-4 rounded-xl border border-gray-200 dark:border-zinc-800 flex items-center gap-4">
+          <img :src="task.thumbnail || '/placeholder.png'" class="w-16 h-16 object-cover rounded-lg bg-gray-100 dark:bg-zinc-800" />
+          <div class="flex-1 min-w-0">
+            <div class="flex justify-between mb-1">
+              <h4 class="font-medium truncate pr-4">{{ task.title }}</h4>
+              <span class="text-xs font-mono text-gray-500 whitespace-nowrap">
+                {{ task.status === 'finished' ? '已完成' : (task.status === 'error' ? '失败' : task.speed) }}
+              </span>
+            </div>
+            <div class="h-2 bg-gray-100 dark:bg-zinc-800 rounded-full overflow-hidden">
+              <div
+                class="h-full transition-all duration-300"
+                :style="{ width: `${task.progress}%` }"
+                :class="task.status === 'error' ? 'bg-red-500' : (task.status === 'finished' ? 'bg-green-500' : 'bg-blue-600')"
+              />
+            </div>
           </div>
-       </div>
+        </div>
+      </div>
     </div>
-
   </div>
-</template>
\ No newline at end of file
+</template>
diff --git a/src/views/Settings.vue b/src/views/Settings.vue
index c9607bc..792e68b 100644
--- a/src/views/Settings.vue
+++ b/src/views/Settings.vue
@@ -210,7 +210,7 @@ function setTheme(theme: 'light' | 'dark' | 'system') {
                       </div>
                       <div>
                           <div class="font-medium text-zinc-900 dark:text-white">QuickJS</div>
-                          <div class="text-xs text-gray-500 mt-0.5 font-mono">{{ settingsStore.quickjsVersion }}</div>
+                          <div class="text-xs text-gray-500 mt-0.5 font-mono" :title="settingsStore.quickjsVersion">{{ settingsStore.quickjsVersion }}</div>
                       </div>
                   </div>
                   <button 
@@ -254,4 +254,4 @@ function setTheme(theme: 'light' | 'dark' | 'system') {
        </section>
     </div>
   </div>
-</template>
\ No newline at end of file
+</template>