import { isBudgetMonitorUser, isExecutiveUser, isPlatformAdminUser } from '../../utils/accessControl.js'
import {
  GUIDED_ACTION_OPEN_TRAVEL_CALCULATOR,
  GUIDED_ACTION_START_APPLICATION,
  GUIDED_ACTION_START_REIMBURSEMENT,
  GUIDED_ACTION_START_STATUS_QUERY
} from './travelReimbursementGuidedFlowModel.js'

export const SESSION_TYPE_EXPENSE = 'expense'
export const SESSION_TYPE_APPLICATION = 'application'
export const SESSION_TYPE_APPROVAL = 'approval'
export const SESSION_TYPE_KNOWLEDGE = 'knowledge'
export const SESSION_TYPE_BUDGET = 'budget'
export const SESSION_TYPE_STEWARD = 'steward'

export const ASSISTANT_SESSION_TYPES = [
  SESSION_TYPE_STEWARD,
  SESSION_TYPE_APPLICATION,
  SESSION_TYPE_EXPENSE,
  SESSION_TYPE_APPROVAL,
  SESSION_TYPE_KNOWLEDGE,
  SESSION_TYPE_BUDGET
]

export const ASSISTANT_SESSION_MODE_OPTIONS = [
  {
    key: SESSION_TYPE_STEWARD,
    label: '小财管家',
    icon: 'mdi mdi-account-tie-outline',
    description: '统一拆解多任务、归集附件，并调度申请助手和报销助手'
  },
  {
    key: SESSION_TYPE_APPLICATION,
    label: '申请助手',
    icon: 'mdi mdi-file-plus-outline',
    description: '只处理费用申请、事前审批、申请材料和申请状态'
  },
  {
    key: SESSION_TYPE_EXPENSE,
    label: '报销助手',
    icon: 'mdi mdi-receipt-text-plus-outline',
    description: '只处理报销发起、票据识别、草稿归集和报销状态'
  },
  {
    key: SESSION_TYPE_APPROVAL,
    label: '审核助手',
    icon: 'mdi mdi-clipboard-check-outline',
    description: '只处理待审单据、风险解释、审批动作和审核意见'
  },
  {
    key: SESSION_TYPE_KNOWLEDGE,
    label: '财务知识助手',
    icon: 'mdi mdi-book-open-page-variant-outline',
    description: '只处理财务制度、标准规则、票据要求和政策解释'
  },
  {
    key: SESSION_TYPE_BUDGET,
    label: '预算编制助手',
    icon: 'mdi mdi-calculator-variant-outline',
    description: '帮助你进行预算编制与预算相关问题的整理'
  }
]

export function canUseBudgetAssistantSession(user = null) {
  return Boolean(isPlatformAdminUser(user) || isBudgetMonitorUser(user) || isExecutiveUser(user))
}

function canUseAssistantSessionType(sessionType, user = null) {
  const normalized = String(sessionType || '').trim()
  if (normalized === SESSION_TYPE_BUDGET) {
    return canUseBudgetAssistantSession(user)
  }
  return true
}

export function filterAssistantSessionModes(sessionModes = [], user = null) {
  return Array.isArray(sessionModes)
    ? sessionModes.filter((mode) => canUseAssistantSessionType(mode?.key, user))
    : []
}

export function filterAssistantSessionTypes(sessionTypes = [], user = null) {
  return Array.isArray(sessionTypes)
    ? sessionTypes.filter((sessionType) => canUseAssistantSessionType(String(sessionType || '').trim(), user))
    : []
}

export function normalizeAssistantSessionType(sessionType, fallback = SESSION_TYPE_EXPENSE) {
  const normalized = String(sessionType || '').trim()
  if (ASSISTANT_SESSION_TYPES.includes(normalized)) {
    return normalized
  }
  const fallbackType = String(fallback || '').trim()
  return ASSISTANT_SESSION_TYPES.includes(fallbackType) ? fallbackType : SESSION_TYPE_EXPENSE
}

export function resolveAssistantSessionMode(sessionType) {
  const normalized = normalizeAssistantSessionType(sessionType)
  return ASSISTANT_SESSION_MODE_OPTIONS.find((item) => item.key === normalized) || ASSISTANT_SESSION_MODE_OPTIONS[1]
}

export const aiAvatar = '/assets/header.png'
export const userAvatar = '/assets/person.png'

export const SOURCE_LABELS = {
  workbench: '来自个人工作台',
  topbar: '来自发起报销',
  application: '来自发起申请',
  budget: '来自预算中心',
  detail: '来自智能录入',
  upload: '来自附件上传',
  requests: '来自报销列表'
}


export const SCENARIO_LABELS = {
  expense: '报销',
  accounts_receivable: '应收',
  accounts_payable: '应付',
  budget: '预算',
  knowledge: '知识',
  unknown: '通用'
}

export const INTENT_LABELS = {
  query: '查询',
  explain: '解释',
  compare: '对比',
  risk_check: '风险检查',
  draft: '信息核对',
  operate: '动作请求'
}

export const FLOW_STEP_FALLBACKS = {
  intent: {
    title: '意图识别',
    tool: 'IntentRecognizer',
    runningText: '正在识别业务意图...',
    completedText: '意图识别完成'
  },
  extraction: {
    title: '信息提取',
    tool: 'SemanticExtractor',
    runningText: '正在提取时间、金额、费用类型和待补项...',
    completedText: '信息提取完成'
  },
  ocr: {
    title: '票据/OCR识别',
    tool: 'OCRService',
    runningText: '正在识别票据附件...',
    completedText: '票据识别完成'
  },
  'expense-review-preview': {
    title: '报销信息核对',
    tool: 'user_agent.expense_review_preview',
    runningText: '正在整理识别结果和右侧核对信息...',
    completedText: '核对信息已整理'
  },
  'expense-claim-draft': {
    title: '保存报销草稿',
    tool: 'database.expense_claims.save_or_submit',
    runningText: '正在把已确认信息保存为草稿...',
    completedText: '草稿已保存'
  },
  'draft-risk-review': {
    title: '草稿风险识别',
    tool: 'RuleEngine',
    runningText: '正在对草稿执行规则校验...',
    completedText: '已完成草稿风险识别'
  },
  'application-submit-success': {
    title: '申请单提交成功',
    tool: 'ApplicationSubmit',
    runningText: '正在提交费用申请...',
    completedText: '申请单提交成功'
  },
  'attachment-association': {
    title: '票据关联草稿',
    tool: 'database.expense_claims.save_or_submit',
    runningText: '正在把本次票据关联到已保存草稿...',
    completedText: '票据已归集到草稿'
  },
  'expense-scene-selection': {
    title: '报销场景确认',
    tool: 'UserConfirmation',
    runningText: '等待用户选择报销场景...',
    completedText: '已进入场景选择，等待用户确认'
  },
  'expense-intent-confirmation': {
    title: '报销意图确认',
    tool: 'UserConfirmation',
    runningText: '等待用户确认是否发起报销...',
    completedText: '用户已确认报销意图'
  }
}
export const ASSISTANT_DISPLAY_NAME = '财务助手'

export const EXPENSE_WELCOME_QUICK_ACTIONS = [
  {
    label: '快速发起报销',
    action: GUIDED_ACTION_START_REIMBURSEMENT,
    icon: 'mdi mdi-receipt-text-plus-outline'
  },
  {
    label: '查询单据状态',
    action: GUIDED_ACTION_START_STATUS_QUERY,
    icon: 'mdi mdi-file-search-outline'
  },
  {
    label: '差旅计算器',
    action: GUIDED_ACTION_OPEN_TRAVEL_CALCULATOR,
    icon: 'mdi mdi-calculator-variant-outline'
  }
]

export const APPLICATION_WELCOME_QUICK_ACTIONS = [
  {
    label: '快速发起申请',
    action: GUIDED_ACTION_START_APPLICATION,
    icon: 'mdi mdi-file-plus-outline'
  },
  {
    label: '查询申请状态',
    prompt: '帮我查询我的费用申请单状态，筛选最近的 5 条记录。',
    icon: 'mdi mdi-file-search-outline'
  },
  {
    label: '申请材料清单',
    prompt: '请告诉我发起费用申请通常需要准备哪些关键信息和附件。',
    icon: 'mdi mdi-clipboard-text-search-outline'
  }
]

export const APPROVAL_WELCOME_QUICK_ACTIONS = [
  {
    label: '待我审核',
    prompt: '帮我查询当前待我审核的单据，筛选最近的 5 条记录。',
    icon: 'mdi mdi-clipboard-list-outline'
  },
  {
    label: '审核风险说明',
    prompt: '帮我梳理待审核单据中需要重点关注的风险，并按高、中、低风险分类说明。',
    icon: 'mdi mdi-alert-circle-outline'
  },
  {
    label: '生成审核意见',
    prompt: '请根据当前待审核单据的风险点，帮我生成一段专业、克制的审核意见草稿。',
    icon: 'mdi mdi-text-box-edit-outline'
  }
]

export const BUDGET_WELCOME_QUICK_ACTIONS = [
  {
    label: '预算编制查询',
    prompt: '帮我查询当前部门本季度预算编制情况，重点看差旅、通信、招待费和办公用品。',
    icon: 'mdi mdi-calculator-variant-outline'
  },
  {
    label: '阈值风险检查',
    prompt: '帮我检查当前预算的提醒阈值、告警阈值和风险阈值设置是否合理，并指出需要关注的费用类型。',
    icon: 'mdi mdi-alert-decagram-outline'
  },
  {
    label: '预算调整建议',
    prompt: '请根据已发生、已占用和剩余预算，帮我整理下一轮预算调整建议。',
    icon: 'mdi mdi-chart-box-plus-outline'
  }
]

export const HOT_KNOWLEDGE_QUESTIONS = [
  '差旅住宿标准按什么规则执行？',
  '酒店超标后如何申请例外报销？',
  '招待费报销需要哪些凭证？',
  '发票抬头不一致还能报销吗？',
  '电子发票验真失败怎么处理？',
  '借款多久内需要冲销？',
  '预算不足还能先提交报销吗？',
  '会议费和招待费如何区分？',
  '跨部门项目费用应该怎么归集？',
  '员工退票手续费是否可以报销？'
]
export const FLOW_MISSING_SLOT_LABELS = {
  expense_type: '报销类型',
  customer_name: '客户名称',
  time_range: '发生时间',
  location: '地点',
  merchant_name: '酒店/商户',
  amount: '金额',
  reason: '事由说明',
  participants: '参与人员',
  attachments: '票据附件'
}

let messageSeed = 0