// filepath: src/stores/logs.ts
import { defineStore } from 'pinia'
import { ref } from 'vue'
import { listen } from '@tauri-apps/api/event'

export interface LogEntry {
  id: string
  taskId: string
  message: string
  level: 'info' | 'error'
  timestamp: number
}

interface LogEvent {
  id: string
  message: string
  level: string
}

export const useLogsStore = defineStore('logs', () => {
  const logs = ref<LogEntry[]>([])
  const isListening = ref(false)

  function addLog(taskId: string, message: string, level: 'info' | 'error') {
    logs.value.push({
      id: crypto.randomUUID(),
      taskId,
      message,
      level,
      timestamp: Date.now()
    })
    
    // Optional: Limit log size to avoid memory issues
    if (logs.value.length > 5000) {
        logs.value = logs.value.slice(-5000)
    }
  }

  async function initListener() {
    if (isListening.value) return
    isListening.value = true
    
    await listen<LogEvent>('download-log', (event) => {
      const { id, message, level } = event.payload
      addLog(id, message, level as 'info' | 'error')
    })
  }
  
  function clearLogs() {
      logs.value = []
  }

  // UI State Persistence
  const autoScroll = ref(true)
  const scrollTop = ref(0)

  return { logs, addLog, initListener, clearLogs, autoScroll, scrollTop }
})