// src/main/ipc/template-handlers.ts
// Phase 12.3: 딕테이션 템플릿 IPC 핸들러

import { ipcMain } from 'electron'
import { IPC_CHANNELS } from '@d3ro/core/ipc-channels'
import { ErrorCode, ipcSuccess, ipcError } from '@d3ro/core/errors'
import { getDictationTemplateService } from '../services/DictationTemplateService'
import { getLogger } from '../services/LoggerService'
import type {
  CreateTemplateParams,
  UpdateTemplateParams,
  DeleteTemplateParams,
  StartTemplateSessionParams,
  SetFieldValueParams,
} from '@d3ro/core/types'

const logger = getLogger('template-handlers')

export function registerTemplateHandlers(): void {
  ipcMain.handle(IPC_CHANNELS.DICTATION_TEMPLATE.GET_ALL, async () => {
    try {
      return ipcSuccess(getDictationTemplateService().getAll())
    } catch (err) {
      const msg = err instanceof Error ? err.message : String(err)
      return ipcError(ErrorCode.UnknownError, msg)
    }
  })

  ipcMain.handle(
    IPC_CHANNELS.DICTATION_TEMPLATE.CREATE,
    async (_event, params: CreateTemplateParams) => {
      try {
        // 라이센스 체크
        try {
          const { getLicenseService } = await import('../services/LicenseService')
          const { Feature } = await import('@d3ro/core/types')
          const license = getLicenseService()
          const access = license.canUse(Feature.DICTATION_TEMPLATE)
          if (!access.allowed) {
            license.promptUpgrade(Feature.DICTATION_TEMPLATE, 'tier_required')
            return ipcError(ErrorCode.FeatureNotAvailable, 'Pro+ required')
          }
        } catch {
          // LicenseService 미초기화 시 허용
        }

        const result = getDictationTemplateService().create(params)
        return ipcSuccess(result)
      } catch (err) {
        const msg = err instanceof Error ? err.message : String(err)
        logger.error('Template create failed:', msg)
        return ipcError(ErrorCode.TemplateInvalidFormat, msg)
      }
    },
  )

  ipcMain.handle(
    IPC_CHANNELS.DICTATION_TEMPLATE.UPDATE,
    async (_event, params: UpdateTemplateParams) => {
      try {
        const result = getDictationTemplateService().update(params)
        return ipcSuccess(result)
      } catch (err) {
        const msg = err instanceof Error ? err.message : String(err)
        return ipcError(ErrorCode.TemplateNotFound, msg)
      }
    },
  )

  ipcMain.handle(
    IPC_CHANNELS.DICTATION_TEMPLATE.DELETE,
    async (_event, params: DeleteTemplateParams) => {
      try {
        getDictationTemplateService().delete(params.id)
        return ipcSuccess(undefined)
      } catch (err) {
        const msg = err instanceof Error ? err.message : String(err)
        return ipcError(ErrorCode.TemplateNotFound, msg)
      }
    },
  )

  ipcMain.handle(
    IPC_CHANNELS.DICTATION_TEMPLATE.START_SESSION,
    async (_event, params: StartTemplateSessionParams) => {
      try {
        getDictationTemplateService().startSession(params.templateId)
        return ipcSuccess(undefined)
      } catch (err) {
        const msg = err instanceof Error ? err.message : String(err)
        logger.error('Template session start failed:', msg)
        return ipcError(ErrorCode.TemplateSessionAlreadyActive, msg)
      }
    },
  )

  ipcMain.handle(IPC_CHANNELS.DICTATION_TEMPLATE.CANCEL_SESSION, async () => {
    try {
      getDictationTemplateService().cancelSession()
      return ipcSuccess(undefined)
    } catch (err) {
      const msg = err instanceof Error ? err.message : String(err)
      return ipcError(ErrorCode.TemplateSessionNotActive, msg)
    }
  })

  ipcMain.handle(IPC_CHANNELS.DICTATION_TEMPLATE.GET_SESSION_STATE, async () => {
    try {
      return ipcSuccess(getDictationTemplateService().getSessionState())
    } catch (err) {
      const msg = err instanceof Error ? err.message : String(err)
      return ipcError(ErrorCode.UnknownError, msg)
    }
  })

  ipcMain.handle(
    IPC_CHANNELS.DICTATION_TEMPLATE.SET_FIELD_VALUE,
    async (_event, params: SetFieldValueParams) => {
      try {
        getDictationTemplateService().setFieldValue(params.fieldId, params.value)
        return ipcSuccess(undefined)
      } catch (err) {
        const msg = err instanceof Error ? err.message : String(err)
        return ipcError(ErrorCode.TemplateFieldRecordingFailed, msg)
      }
    },
  )
}