import {
  AI_APPLICATION_ACTION_SAVE_DRAFT,
  AI_APPLICATION_ACTION_SUBMIT
} from '../../services/aiApplicationPreviewActions.js'
import { buildAiDocumentDetailRequest } from '../../utils/aiDocumentDetailReference.js'
import {
  mergeComposerPrefill,
  resolveSuggestedActionPrefill
} from '../../utils/assistantSuggestedActionPrefill.js'
import {
  AI_ATTACHMENT_ASSOCIATION_CONFIRM_ACTION,
  AI_ATTACHMENT_OCR_DETAIL_ACTION
} from './workbenchAiMessageModel.js'
import { SESSION_TYPE_EXPENSE } from './useWorkbenchAiExpenseFlow.js'
import {
  CANCEL_STANDALONE_REIMBURSEMENT_DRAFT_ACTION,
  CONTINUE_REIMBURSEMENT_DRAFT_ACTION,
  CREATE_STANDALONE_REIMBURSEMENT_DRAFT_ACTION,
  SKIP_REQUIRED_APPLICATION_LINK_ACTION,
  SKIP_REIMBURSEMENT_DRAFT_CHECK_ACTION
} from '../../views/scripts/travelReimbursementAssociationGateModel.js'

export function useWorkbenchAiActionRouter({
  aiExpenseDraft,
  applicationFlow,
  assistantDraft,
  attachmentFlow,
  emit,
  expenseFlow,
  focusAiModeInput,
  hasInlineAttachmentOcrDetails,
  resolveLatestInlineUserPrompt,
  selectedFiles,
  startInlineConversation,
  toast,
  toggleInlineAttachmentOcrDetails
}) {
  function handleInlineSuggestedAction(action = {}, sourceMessage = null) {
    const prefillText = resolveSuggestedActionPrefill(action)
    if (prefillText) {
      assistantDraft.value = mergeComposerPrefill(assistantDraft.value, prefillText)
      focusAiModeInput()
      return
    }

    const actionType = String(action?.action_type || '').trim()
    const actionPayload = action?.payload && typeof action.payload === 'object' ? action.payload : {}
    if (actionType === AI_ATTACHMENT_OCR_DETAIL_ACTION) {
      if (!hasInlineAttachmentOcrDetails(sourceMessage)) {
        toast('当前消息没有可查看的附件识别明细。')
        return
      }
      toggleInlineAttachmentOcrDetails(sourceMessage, true)
      return
    }
    if (actionType === AI_ATTACHMENT_ASSOCIATION_CONFIRM_ACTION) {
      if (applicationFlow.isInlineSuggestedActionDisabled(action, sourceMessage)) {
        return
      }
      void attachmentFlow.confirmAiAttachmentAssociation(actionPayload, sourceMessage)
      return
    }
    if ([AI_APPLICATION_ACTION_SAVE_DRAFT, AI_APPLICATION_ACTION_SUBMIT].includes(actionType)) {
      if (applicationFlow.isInlineSuggestedActionDisabled(action, sourceMessage)) {
        toast('请等待费用测算完成后再继续操作。')
        return
      }
      void applicationFlow.executeInlineApplicationPreviewAction(actionType, sourceMessage, {
        userText: action.label,
        draftPayload: actionPayload.draftPayload || actionPayload.draft_payload || null
      })
      return
    }
    if (actionType === 'open_application_detail') {
      const claimNo = String(actionPayload.claim_no || actionPayload.claimNo || '').trim()
      const claimId = String(actionPayload.claim_id || actionPayload.claimId || '').trim()
      emit('open-document', buildAiDocumentDetailRequest({
        reference: claimNo || claimId,
        claimId,
        claimNo
      }))
      return
    }
    if (actionPayload.steward_confirm_flow && actionPayload.flow_id === 'travel_reimbursement') {
      const expenseType = String(actionPayload.expense_type || 'travel').trim() || 'travel'
      const expenseTypeLabel = String(actionPayload.expense_type_label || '差旅费').trim() || '差旅费'
      expenseFlow.startAiExpenseDraft(expenseType, expenseTypeLabel, true)
      return
    }
    if (actionPayload.steward_confirm_flow && actionPayload.flow_id === 'travel_application') {
      aiExpenseDraft.value = null
      void expenseFlow.startAiApplicationPreviewFromAction(actionPayload)
      return
    }
    if (actionType === 'select_expense_type') {
      const expenseType = String(action?.payload?.expense_type || '').trim()
      const expenseTypeLabel = String(action?.payload?.expense_type_label || action?.label || '').trim()
      const requiresApplicationBeforeReimbursement = Boolean(action?.payload?.requires_application_before_reimbursement)
      expenseFlow.startAiExpenseDraft(expenseType, expenseTypeLabel, requiresApplicationBeforeReimbursement)
      return
    }

    if (actionType === 'select_required_application') {
      expenseFlow.linkAiExpenseApplication(action?.payload || {})
      return
    }

    if (actionType === CONTINUE_REIMBURSEMENT_DRAFT_ACTION) {
      expenseFlow.promptAiReimbursementDraftContinuation(actionPayload)
      focusAiModeInput()
      return
    }

    if (actionType === CREATE_STANDALONE_REIMBURSEMENT_DRAFT_ACTION) {
      expenseFlow.promptStandaloneReimbursementDraftCreation(
        actionPayload.original_message || '我要报销',
        action.label || '独立新建报销单'
      )
      return
    }

    if (actionType === CANCEL_STANDALONE_REIMBURSEMENT_DRAFT_ACTION) {
      expenseFlow.cancelStandaloneReimbursementDraftCreation()
      return
    }

    if (actionType === SKIP_REIMBURSEMENT_DRAFT_CHECK_ACTION) {
      void expenseFlow.startAiReimbursementAssociationGate(
        actionPayload.original_message || '我要报销',
        action.label || '不用草稿，关联申请单新建报销单',
        { skipDraftCheck: true }
      )
      return
    }

    if (actionType === SKIP_REQUIRED_APPLICATION_LINK_ACTION) {
      expenseFlow.pushInlineExpenseSceneSelectionPrompt(
        actionPayload.original_message || '我要报销',
        action.label || '单独新建报销单'
      )
      return
    }

    if (actionType === 'ai_application_start_inline') {
      aiExpenseDraft.value = null
      void expenseFlow.startAiApplicationPreviewFromAction(action?.payload || {}, action?.label)
      return
    }

    const carryText = String(action?.payload?.carry_text || action?.label || '').trim()
    if (!carryText) {
      return
    }
    if (String(action?.payload?.session_type || '').trim() === SESSION_TYPE_EXPENSE && carryText === '我要报销') {
      void expenseFlow.startAiReimbursementAssociationGate(carryText, action.label)
      return
    }
    startInlineConversation(carryText, {
      label: action.label,
      source: 'steward-action',
      sessionType: action?.payload?.session_type || 'steward'
    }, action?.payload?.carry_files ? Array.from(selectedFiles.value) : [])
  }

  return {
    handleInlineSuggestedAction
  }
}