// src/main/ipc/history-handlers.ts

import { ipcMain } from 'electron'
import { IPC_CHANNELS } from '@d3ro/core/ipc-channels'
import { ipcSuccess, ipcError, ErrorCode } from '@d3ro/core/errors'
import fs from 'fs'
import { getHistoryService } from '../services/HistoryService'
import { getCloudSyncService } from '../services/CloudSyncService'
import { audioMimeType } from '../services/sync/audio-sync'
import type {
  HistoryQueryParams,
  HistoryGetByIdParams,
  HistoryDeleteParams,
  HistorySearchParams,
  HistorySetFavoriteParams,
  HistoryAudioSource
} from '@d3ro/core/types'

/** 렌더러로 넘기는 로컬 녹음 상한. 넘으면 재생하지 않는다(IPC 복사 비용). */
const MAX_LOCAL_AUDIO_BYTES = 100 * 1024 * 1024

export function registerHistoryHandlers(): void {
  ipcMain.handle(IPC_CHANNELS.HISTORY.GET_ALL, async (_event, params: HistoryQueryParams) => {
    try {
      return ipcSuccess(getHistoryService().list(params))
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBQueryFailed, `Failed to get history: ${message}`)
    }
  })

  ipcMain.handle(IPC_CHANNELS.HISTORY.GET_BY_ID, async (_event, params: HistoryGetByIdParams) => {
    try {
      return ipcSuccess(getHistoryService().getById(params.id))
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBQueryFailed, `Failed to get history entry: ${message}`)
    }
  })

  ipcMain.handle(IPC_CHANNELS.HISTORY.DELETE, async (_event, params: HistoryDeleteParams) => {
    try {
      const removed = getHistoryService().delete(params.id)
      if (!removed) {
        return ipcError(ErrorCode.HistoryNotFound, `History entry not found: ${params.id}`)
      }
      return ipcSuccess(undefined)
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBWriteFailed, `Failed to delete history entry: ${message}`)
    }
  })

  ipcMain.handle(IPC_CHANNELS.HISTORY.DELETE_ALL, async () => {
    try {
      getHistoryService().deleteAll()
      return ipcSuccess(undefined)
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBWriteFailed, `Failed to delete all history: ${message}`)
    }
  })

  ipcMain.handle(IPC_CHANNELS.HISTORY.SET_FAVORITE, async (_event, params: HistorySetFavoriteParams) => {
    try {
      const entry = getHistoryService().setFavorite(params.id, params.isFavorite === true)
      if (!entry) {
        return ipcError(ErrorCode.HistoryNotFound, `History entry not found: ${params.id}`)
      }
      return ipcSuccess(entry)
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBWriteFailed, `Failed to update favorite: ${message}`)
    }
  })

  ipcMain.handle(IPC_CHANNELS.HISTORY.GET_AUDIO, async (_event, params: HistoryGetByIdParams) => {
    try {
      const entry = getHistoryService().getById(params.id)
      if (!entry) return ipcError(ErrorCode.HistoryNotFound, `History entry not found: ${params.id}`)
      const localPath = entry.audioLocalPath
      if (localPath && fs.existsSync(localPath) && fs.statSync(localPath).size <= MAX_LOCAL_AUDIO_BYTES) {
        const source: HistoryAudioSource = {
          kind: 'local',
          bytes: new Uint8Array(fs.readFileSync(localPath)),
          mimeType: audioMimeType(localPath) ?? 'audio/wav',
        }
        return ipcSuccess(source)
      }
      const url = await getCloudSyncService().createHistoryAudioUrl(params.id)
      return ipcSuccess(url ? ({ kind: 'remote', url } satisfies HistoryAudioSource) : null)
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBQueryFailed, `Failed to load audio: ${message}`)
    }
  })

  ipcMain.handle(IPC_CHANNELS.HISTORY.SEARCH, async (_event, params: HistorySearchParams) => {
    try {
      return ipcSuccess(getHistoryService().search(params))
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBQueryFailed, `Failed to search history: ${message}`)
    }
  })

  ipcMain.handle(IPC_CHANNELS.STATS.GET_SUMMARY, async () => {
    try {
      return ipcSuccess(getHistoryService().getStats())
    } catch (error) {
      const message = error instanceof Error ? error.message : String(error)
      return ipcError(ErrorCode.DBQueryFailed, `Failed to get stats: ${message}`)
    }
  })
}