export const GUIDED_FLOW_MODE_NONE = ''
export const GUIDED_FLOW_MODE_REIMBURSEMENT = 'reimbursement_guide'
export const GUIDED_FLOW_MODE_STATUS_QUERY = 'status_query_guide'

export const GUIDED_ACTION_START_REIMBURSEMENT = 'start_guided_reimbursement'
export const GUIDED_ACTION_START_APPLICATION = 'start_guided_application'
export const GUIDED_ACTION_START_STATUS_QUERY = 'start_guided_status_query'
export const GUIDED_ACTION_OPEN_TRAVEL_CALCULATOR = 'open_travel_calculator'
export const GUIDED_ACTION_SELECT_EXPENSE_TYPE = 'guided_select_expense_type'
export const GUIDED_ACTION_SELECT_REQUIRED_APPLICATION = 'guided_select_required_application'
export const GUIDED_ACTION_CONFIRM_REIMBURSEMENT_REVIEW = 'guided_confirm_reimbursement_review'
export const GUIDED_ACTION_CONTINUE_FILLING = 'guided_continue_filling'
export const GUIDED_ACTION_PROCESS_INTERRUPTION = 'guided_process_interruption'
export const GUIDED_ACTION_SELECT_QUERY_MODE = 'guided_select_query_mode'
export const GUIDED_ACTION_SELECT_QUERY_STATUS = 'guided_select_query_status'

export const GUIDED_EXPENSE_TYPES = [
  { key: 'travel', label: '差旅费', description: '出差、跨城交通、住宿和补贴', icon: 'mdi mdi-bag-suitcase-outline' },
  { key: 'transport', label: '交通费', description: '市内交通、打车、停车和通行费', icon: 'mdi mdi-car-outline' },
  { key: 'hotel', label: '住宿费', description: '单独住宿或酒店票据', icon: 'mdi mdi-bed-outline' },
  { key: 'meal', label: '业务招待费', description: '客户接待、餐饮和工作招待', icon: 'mdi mdi-food-fork-drink' },
  { key: 'office', label: '办公用品费', description: '办公用品、文具和低值易耗品', icon: 'mdi mdi-briefcase-outline' },
  { key: 'other', label: '其他费用', description: '暂不属于以上类型的费用', icon: 'mdi mdi-dots-horizontal-circle-outline' }
]

const GUIDED_REIMBURSEMENT_STEPS = {
  travel: [
    { key: 'reason', summaryLabel: '事由', prompt: '请先告诉我本次出差事由，例如：去上海支持项目部署。' },
    { key: 'location', summaryLabel: '出差地点', prompt: '本次出差地点是哪里？可以回复城市或具体客户地点。' },
    { key: 'time_range', summaryLabel: '出差时间/天数', prompt: '请补充出差时间或天数，例如：2026-05-20 至 2026-05-23，出差 3 天。' },
    { key: 'amount', summaryLabel: '金额', prompt: '请补充本次预计或实际报销金额。如果还没有汇总，可以回复“待核算”。' },
    { key: 'attachments', summaryLabel: '票据', prompt: '票据可以现在上传，也可以回复“稍后上传”。上传后我会在生成核对信息时一起处理。' }
  ],
  transport: [
    { key: 'reason', summaryLabel: '出行事由', prompt: '请说明本次交通费事由，例如：送客户去机场。' },
    { key: 'time_range', summaryLabel: '出行时间', prompt: '请补充出行时间，例如：2026-05-20 下午。' },
    { key: 'location', summaryLabel: '路线/地点', prompt: '请补充出行路线或地点，例如：公司至机场。' },
    { key: 'amount', summaryLabel: '金额', prompt: '请补充交通费金额。如果票据里再识别金额，可以回复“以票据为准”。' },
    { key: 'attachments', summaryLabel: '票据', prompt: '请上传出租车、网约车、停车或通行费等票据；也可以回复“稍后上传”。' }
  ],
  hotel: [
    { key: 'reason', summaryLabel: '住宿事由', prompt: '请说明住宿事由，例如：项目现场支持期间住宿。' },
    { key: 'location', summaryLabel: '城市/酒店地点', prompt: '住宿城市或酒店地点是哪里？' },
    { key: 'time_range', summaryLabel: '入住离店时间', prompt: '请补充入住和离店时间，例如：2026-05-20 至 2026-05-23。' },
    { key: 'amount', summaryLabel: '金额', prompt: '请补充住宿金额。如果还没有汇总，可以回复“待核算”。' },
    { key: 'attachments', summaryLabel: '票据', prompt: '请上传酒店发票或住宿水单；也可以回复“稍后上传”。' }
  ],
  meal: [
    { key: 'customer_name', summaryLabel: '客户单位', prompt: '请补充客户单位或接待对象。' },
    { key: 'participants', summaryLabel: '参与人员', prompt: '请补充参与人员，例如：客户 2 人，我方 1 人。' },
    { key: 'time_range', summaryLabel: '招待时间', prompt: '请补充招待时间，例如：2026-05-20 晚。' },
    { key: 'location', summaryLabel: '招待地点', prompt: '请补充招待地点或商户名称。' },
    { key: 'amount', summaryLabel: '金额', prompt: '请补充招待金额。' },
    { key: 'reason', summaryLabel: '事由', prompt: '请补充招待事由，例如：项目沟通或客户接待。' },
    { key: 'attachments', summaryLabel: '票据', prompt: '请上传餐饮发票或相关凭证；也可以回复“稍后上传”。' }
  ],
  office: [
    { key: 'reason', summaryLabel: '采购用途', prompt: '请说明采购用途，例如：项目现场临时采购办公用品。' },
    { key: 'location', summaryLabel: '商户/采购地点', prompt: '请补充商户或采购地点。' },
    { key: 'time_range', summaryLabel: '发生时间', prompt: '请补充费用发生时间。' },
    { key: 'amount', summaryLabel: '金额', prompt: '请补充办公用品金额。' },
    { key: 'attachments', summaryLabel: '票据', prompt: '请上传办公用品发票或购物凭证；也可以回复“稍后上传”。' }
  ],
  other: [
    { key: 'reason', summaryLabel: '费用说明', prompt: '请说明这笔费用的具体内容和用途。' },
    { key: 'time_range', summaryLabel: '发生时间', prompt: '请补充费用发生时间。' },
    { key: 'location', summaryLabel: '地点/对象', prompt: '请补充费用发生地点或关联对象。' },
    { key: 'amount', summaryLabel: '金额', prompt: '请补充费用金额。' },
    { key: 'attachments', summaryLabel: '票据', prompt: '请上传相关票据；也可以回复“稍后上传”。' }
  ]
}

export const GUIDED_QUERY_MODES = [
  { key: 'claim_no', label: '按单号', description: '输入报销单号精准查询', icon: 'mdi mdi-pound' },
  { key: 'status', label: '按状态', description: '查询草稿、审批中或已归档单据', icon: 'mdi mdi-list-status' },
  { key: 'time_range', label: '按时间范围', description: '例如上周、去年、2026-05', icon: 'mdi mdi-calendar-search-outline' },
  { key: 'keyword', label: '按地点/事由', description: '例如北京、上海电力、服务器部署', icon: 'mdi mdi-map-search-outline' }
]

export const GUIDED_QUERY_STATUS_OPTIONS = [
  { key: 'draft', label: '草稿', description: '还没有正式提交的单据' },
  { key: 'pending', label: '审批中', description: '正在流转审批的单据' },
  { key: 'returned', label: '已退回', description: '需要补充或修改的单据' },
  { key: 'archived', label: '已归档', description: '已完成归档的单据' },
  { key: 'completed', label: '已完成', description: '已审核完成或已付款的单据' }
]

const NO_ATTACHMENT_TEXT_PATTERN = /^(稍后|暂不|不用|没有|待上传|后面|后续|先不|以票据为准)/u
const INTERRUPTION_PATTERN = /(查一下|查询|状态|报销了吗|报销了么|多少|总额|标准|制度|规则|为什么|怎么|可以吗|能不能|差旅计算器|计算一下|解释|风险|打开|跳转|查看|审批|归档|入账|[?？])/u

function uniqueValues(values) {
  return Array.from(new Set((Array.isArray(values) ? values : []).map((item) => String(item || '').trim()).filter(Boolean)))
}

function normalizeText(value) {
  return String(value || '').trim()
}

function normalizeValues(values) {
  if (!values || typeof values !== 'object') {
    return {}
  }
  return Object.entries(values).reduce((result, [key, value]) => {
    if (key === 'attachment_names') {
      result[key] = uniqueValues(value)
      return result
    }
    result[key] = normalizeText(value)
    return result
  }, {})
}

function hasLinkedApplication(values) {
  return Boolean(normalizeText(values?.application_claim_id) || normalizeText(values?.application_claim_no))
}

function buildApplicationSummaryParts(values) {
  return [
    normalizeText(values?.application_claim_no),
    normalizeText(values?.application_reason),
    normalizeText(values?.application_business_time),
    normalizeText(values?.application_location),
    normalizeText(values?.application_amount_label || values?.application_amount)
  ].filter(Boolean)
}

function normalizeApplicationCandidates(applications) {
  if (!Array.isArray(applications)) {
    return []
  }
  return applications
    .map((item) => (item && typeof item === 'object' ? item : null))
    .filter(Boolean)
    .map((item) => ({
      id: normalizeText(item.id || item.application_claim_id),
      claim_no: normalizeText(item.claim_no || item.application_claim_no),
      expense_type: normalizeText(item.expense_type || item.application_expense_type),
      reason: normalizeText(item.reason || item.application_reason),
      location: normalizeText(item.location || item.application_location),
      amount: normalizeText(item.amount || item.application_amount),
      amount_label: normalizeText(item.amount_label || item.application_amount_label),
      business_time: normalizeText(item.business_time || item.application_business_time),
      days: normalizeText(item.days || item.application_days),
      transport_mode: normalizeText(item.transport_mode || item.application_transport_mode),
      lodging_daily_cap: normalizeText(item.lodging_daily_cap || item.application_lodging_daily_cap),
      subsidy_daily_cap: normalizeText(item.subsidy_daily_cap || item.application_subsidy_daily_cap),
      transport_policy: normalizeText(item.transport_policy || item.application_transport_policy),
      policy_estimate: normalizeText(item.policy_estimate || item.application_policy_estimate),
      rule_name: normalizeText(item.rule_name || item.application_rule_name),
      rule_version: normalizeText(item.rule_version || item.application_rule_version),
      status: normalizeText(item.status || item.application_status),
      status_label: normalizeText(item.status_label || item.application_status_label),
      application_date: normalizeText(item.application_date)
    }))
    .filter((item) => item.id || item.claim_no)
}

export function createEmptyGuidedFlowState() {
  return {
    mode: GUIDED_FLOW_MODE_NONE,
    stepKey: '',
    expenseType: '',
    values: {},
    pendingInterruptionText: '',
    applicationCandidates: []
  }
}

export function normalizeGuidedFlowState(state) {
  const source = state && typeof state === 'object' ? state : {}
  const mode = normalizeText(source.mode)
  const supportedMode = [GUIDED_FLOW_MODE_REIMBURSEMENT, GUIDED_FLOW_MODE_STATUS_QUERY].includes(mode)
    ? mode
    : GUIDED_FLOW_MODE_NONE
  if (!supportedMode) {
    return createEmptyGuidedFlowState()
  }

  return {
    mode: supportedMode,
    stepKey: normalizeText(source.stepKey),
    expenseType: normalizeText(source.expenseType),
    values: normalizeValues(source.values),
    pendingInterruptionText: normalizeText(source.pendingInterruptionText),
    applicationCandidates: normalizeApplicationCandidates(source.applicationCandidates)
  }
}

export function isGuidedFlowActive(state) {
  return Boolean(normalizeGuidedFlowState(state).mode)
}

export function getGuidedExpenseType(expenseType) {
  const key = normalizeText(expenseType)
  return GUIDED_EXPENSE_TYPES.find((item) => item.key === key) || null
}

export function getGuidedExpenseTypeLabel(expenseType) {
  return getGuidedExpenseType(expenseType)?.label || ''
}

export function buildGuidedExpenseTypeActions() {
  return GUIDED_EXPENSE_TYPES.map((option) => ({
    label: option.label,
    description: option.description,
    icon: option.icon,
    action_type: GUIDED_ACTION_SELECT_EXPENSE_TYPE,
    payload: {
      expense_type: option.key,
      expense_type_label: option.label
    }
  }))
}

export function buildGuidedReimbursementStartText() {
  return [
    '请问你要报销的类型？',
    '',
    '先选一个最贴近的费用场景，我会按对应流程逐项询问。这个过程只做本地引导，不会自动创建草稿。'
  ].join('\n')
}

export function createGuidedReimbursementState() {
  return {
    ...createEmptyGuidedFlowState(),
    mode: GUIDED_FLOW_MODE_REIMBURSEMENT,
    stepKey: 'expense_type'
  }
}

export function selectGuidedExpenseType(state, expenseType) {
  const type = getGuidedExpenseType(expenseType)
  if (!type) {
    return normalizeGuidedFlowState(state)
  }
  const steps = GUIDED_REIMBURSEMENT_STEPS[type.key] || []
  return {
    ...normalizeGuidedFlowState(state),
    mode: GUIDED_FLOW_MODE_REIMBURSEMENT,
    expenseType: type.key,
    stepKey: steps[0]?.key || 'summary',
    pendingInterruptionText: '',
    applicationCandidates: []
  }
}

export function waitForGuidedApplicationSelection(state, expenseType, applications = []) {
  const type = getGuidedExpenseType(expenseType)
  if (!type) {
    return normalizeGuidedFlowState(state)
  }
  return {
    ...normalizeGuidedFlowState(state),
    mode: GUIDED_FLOW_MODE_REIMBURSEMENT,
    expenseType: type.key,
    stepKey: 'application_selection',
    pendingInterruptionText: '',
    applicationCandidates: normalizeApplicationCandidates(applications)
  }
}

export function selectGuidedRequiredApplication(state, application = {}) {
  const current = normalizeGuidedFlowState(state)
  return {
    ...current,
    values: normalizeValues({
      ...current.values,
      application_claim_id: application.application_claim_id || application.id || '',
      application_claim_no: application.application_claim_no || application.claim_no || '',
      application_reason: application.application_reason || application.reason || '',
      application_location: application.application_location || application.location || '',
      application_amount: application.application_amount || application.amount || '',
      application_amount_label: application.application_amount_label || application.amount_label || '',
      application_business_time: application.application_business_time || application.business_time || '',
      application_days: application.application_days || application.days || '',
      application_transport_mode: application.application_transport_mode || application.transport_mode || '',
      application_lodging_daily_cap: application.application_lodging_daily_cap || application.lodging_daily_cap || '',
      application_subsidy_daily_cap: application.application_subsidy_daily_cap || application.subsidy_daily_cap || '',
      application_transport_policy: application.application_transport_policy || application.transport_policy || '',
      application_policy_estimate: application.application_policy_estimate || application.policy_estimate || '',
      application_rule_name: application.application_rule_name || application.rule_name || '',
      application_rule_version: application.application_rule_version || application.rule_version || '',
      application_status_label: application.application_status_label || application.status_label || '',
      application_date: application.application_date || ''
    }),
    stepKey: 'summary',
    pendingInterruptionText: '',
    applicationCandidates: []
  }
}

export function getGuidedReimbursementSteps(expenseType) {
  const key = normalizeText(expenseType)
  return GUIDED_REIMBURSEMENT_STEPS[key] || []
}

export function getCurrentGuidedStep(state) {
  const current = normalizeGuidedFlowState(state)
  if (current.mode !== GUIDED_FLOW_MODE_REIMBURSEMENT || !current.expenseType) {
    return null
  }
  return getGuidedReimbursementSteps(current.expenseType).find((step) => step.key === current.stepKey) || null
}

export function buildGuidedStepPromptText(state) {
  const current = normalizeGuidedFlowState(state)
  const step = getCurrentGuidedStep(current)
  const typeLabel = getGuidedExpenseTypeLabel(current.expenseType)
  if (!step || !typeLabel) {
    return buildGuidedReimbursementStartText()
  }
  const steps = getGuidedReimbursementSteps(current.expenseType)
  const stepIndex = Math.max(0, steps.findIndex((item) => item.key === step.key))
  return [
    `已选择“${typeLabel}”。`,
    '',
    `第 ${stepIndex + 1} 步：${step.summaryLabel}`,
    step.prompt,
    '',
    '直接回复这一项即可。'
  ].join('\n')
}

export function resolveGuidedExpenseTypeFromText(text) {
  const normalized = normalizeText(text)
  if (!normalized) {
    return ''
  }
  const exact = GUIDED_EXPENSE_TYPES.find((item) => normalized === item.label || normalized === item.key)
  if (exact) {
    return exact.key
  }
  const matched = GUIDED_EXPENSE_TYPES.find((item) => normalized.includes(item.label))
  return matched?.key || ''
}

export function applyGuidedReimbursementAnswer(state, answerText, attachmentNames = []) {
  const current = normalizeGuidedFlowState(state)
  const step = getCurrentGuidedStep(current)
  if (!step) {
    return current
  }

  const answer = normalizeText(answerText)
  const nextValues = { ...current.values }
  if (step.key === 'attachments') {
    const nextAttachmentNames = uniqueValues([
      ...(Array.isArray(nextValues.attachment_names) ? nextValues.attachment_names : []),
      ...attachmentNames
    ])
    if (nextAttachmentNames.length) {
      nextValues.attachment_names = nextAttachmentNames
    }
    nextValues.attachments = answer || (nextAttachmentNames.length ? `已选择 ${nextAttachmentNames.length} 份附件` : '稍后上传')
  } else {
    nextValues[step.key] = answer
  }

  const steps = getGuidedReimbursementSteps(current.expenseType)
  const currentIndex = steps.findIndex((item) => item.key === step.key)
  const nextStep = steps[currentIndex + 1]
  return {
    ...current,
    values: normalizeValues(nextValues),
    stepKey: nextStep?.key || 'summary',
    pendingInterruptionText: ''
  }
}

export function isGuidedReimbursementReadyForReview(state) {
  const current = normalizeGuidedFlowState(state)
  return current.mode === GUIDED_FLOW_MODE_REIMBURSEMENT
    && Boolean(current.expenseType)
    && current.stepKey === 'summary'
}

export function buildGuidedReimbursementSummaryText(state) {
  const current = normalizeGuidedFlowState(state)
  const typeLabel = getGuidedExpenseTypeLabel(current.expenseType) || '报销'
  const steps = getGuidedReimbursementSteps(current.expenseType)
  const linkedApplication = hasLinkedApplication(current.values)
  const lines = [
    `已完成“${typeLabel}”的引导填写。`,
    '',
    '请核查下面的关键信息：'
  ]

  if (linkedApplication) {
    const applicationParts = buildApplicationSummaryParts(current.values)
    lines.push(`- 关联申请单：${applicationParts.join(' / ')}`)
    lines.push('- 报销票据：可先生成草稿，随后在草稿详情中上传对应票据。')
  } else {
    steps.forEach((step) => {
      const value = step.key === 'attachments'
        ? (current.values.attachment_names?.length
            ? current.values.attachment_names.join('、')
            : current.values.attachments || '稍后上传')
        : current.values[step.key]
      lines.push(`- ${step.summaryLabel}：${value || '待补充'}`)
    })
  }

  lines.push('')
  lines.push(
    linkedApplication
      ? '如果关联信息无误，我可以直接生成报销草稿；后续由你在草稿详情中上传和归集票据。'
      : '如果这些信息无误，我可以继续生成报销草稿；草稿生成后可继续上传票据或补充信息。'
  )
  return lines.join('\n')
}

export function buildGuidedReviewConfirmationActions() {
  return [{
    label: '生成报销草稿',
    description: '使用当前信息生成草稿，票据可在草稿详情继续上传',
    icon: 'mdi mdi-clipboard-check-outline',
    action_type: GUIDED_ACTION_CONFIRM_REIMBURSEMENT_REVIEW
  }]
}

export function buildGuidedReviewSubmitOptions(state, files = []) {
  const current = normalizeGuidedFlowState(state)
  const type = getGuidedExpenseType(current.expenseType)
  const values = current.values || {}
  const typeLabel = type?.label || '其他费用'
  const linkedApplication = hasLinkedApplication(values)
  const applicationReason = values.application_reason || ''
  const applicationLocation = values.application_location || ''
  const applicationAmount = values.application_amount || values.application_amount_label || ''
  const applicationBusinessTime = values.application_business_time || ''
  const applicationTransportMode = values.application_transport_mode || ''
  const fieldLines = []
  if (linkedApplication) {
    const applicationParts = buildApplicationSummaryParts(values)
    fieldLines.push(`关联申请单：${applicationParts.join(' / ')}`)
    fieldLines.push('报销票据：草稿生成后在详情中上传')
  } else {
    getGuidedReimbursementSteps(current.expenseType).forEach((step) => {
      const value = step.key === 'attachments'
        ? (values.attachment_names?.length ? values.attachment_names.join('、') : values.attachments || '稍后上传')
        : values[step.key]
      fieldLines.push(`${step.summaryLabel}：${value || '待补充'}`)
    })
  }
  const rawText = [
    `报销类型：${typeLabel}`,
    ...fieldLines
  ].join('\n')
  const reviewFormValues = {
    expense_type: typeLabel,
    reason: values.reason || applicationReason || values.customer_name || '',
    customer_name: values.customer_name || '',
    participants: values.participants || '',
    location: values.location || applicationLocation || '',
    time_range: values.time_range || applicationBusinessTime || '',
    transport_mode: values.transport_mode || applicationTransportMode || '',
    amount: linkedApplication ? (values.amount || '') : (values.amount || applicationAmount || ''),
    attachments: Array.isArray(values.attachment_names) ? values.attachment_names.join('、') : '',
    application_claim_id: values.application_claim_id || '',
    application_claim_no: values.application_claim_no || '',
    application_reason: values.application_reason || '',
    application_location: values.application_location || '',
    application_amount: values.application_amount || '',
    application_amount_label: values.application_amount_label || '',
    application_business_time: values.application_business_time || '',
    application_days: values.application_days || '',
    application_transport_mode: values.application_transport_mode || '',
    application_lodging_daily_cap: values.application_lodging_daily_cap || '',
    application_subsidy_daily_cap: values.application_subsidy_daily_cap || '',
    application_transport_policy: values.application_transport_policy || '',
    application_policy_estimate: values.application_policy_estimate || '',
    application_rule_name: values.application_rule_name || '',
    application_rule_version: values.application_rule_version || '',
    application_date: values.application_date || ''
  }

  return {
    rawText,
    userText: '生成报销草稿',
    pendingText: '正在生成报销草稿...',
    systemGenerated: true,
    files,
    extraContext: {
      draft_claim_id: '',
      review_action: 'save_draft',
      user_input_text: rawText,
      expense_scene_selection: {
        expense_type: type?.key || current.expenseType || 'other',
        expense_type_label: typeLabel,
        original_message: rawText,
        application_claim_id: values.application_claim_id || '',
        application_claim_no: values.application_claim_no || ''
      },
      review_form_values: reviewFormValues
    }
  }
}

export function shouldConfirmGuidedInterruption(text, state) {
  const current = normalizeGuidedFlowState(state)
  if (!current.mode || current.pendingInterruptionText) {
    return false
  }
  const normalized = normalizeText(text)
  if (!normalized || NO_ATTACHMENT_TEXT_PATTERN.test(normalized)) {
    return false
  }
  return INTERRUPTION_PATTERN.test(normalized)
}

export function buildGuidedInterruptionText(text) {
  return [
    `我看到你刚才输入的是：“${normalizeText(text)}”。`,
    '',
    '这看起来像一个新的问题。你想继续填写当前引导，还是先暂停当前引导并处理这个问题？'
  ].join('\n')
}

export function buildGuidedInterruptionActions() {
  return [
    {
      label: '继续填写',
      description: '保留当前引导，继续回答这一项',
      icon: 'mdi mdi-pencil-outline',
      action_type: GUIDED_ACTION_CONTINUE_FILLING
    },
    {
      label: '暂停当前引导并处理这个问题',
      description: '暂停引导，把刚才输入交给财务助手处理',
      icon: 'mdi mdi-chat-processing-outline',
      action_type: GUIDED_ACTION_PROCESS_INTERRUPTION
    }
  ]
}

export function createGuidedStatusQueryState() {
  return {
    ...createEmptyGuidedFlowState(),
    mode: GUIDED_FLOW_MODE_STATUS_QUERY,
    stepKey: 'query_mode'
  }
}

export function buildGuidedStatusQueryStartText() {
  return [
    '你想按什么条件查询单据状态？',
    '',
    '先选查询方式，我再向你收集对应条件。'
  ].join('\n')
}

export function buildGuidedQueryModeActions() {
  return GUIDED_QUERY_MODES.map((option) => ({
    label: option.label,
    description: option.description,
    icon: option.icon,
    action_type: GUIDED_ACTION_SELECT_QUERY_MODE,
    payload: {
      query_mode: option.key,
      query_mode_label: option.label
    }
  }))
}

export function buildGuidedQueryStatusActions() {
  return GUIDED_QUERY_STATUS_OPTIONS.map((option) => ({
    label: option.label,
    description: option.description,
    icon: 'mdi mdi-checkbox-marked-circle-outline',
    action_type: GUIDED_ACTION_SELECT_QUERY_STATUS,
    payload: {
      query_status: option.key,
      query_status_label: option.label
    }
  }))
}

export function resolveGuidedQueryModeFromText(text) {
  const normalized = normalizeText(text)
  if (!normalized) return ''
  const exact = GUIDED_QUERY_MODES.find((item) => normalized === item.label || normalized === item.key)
  if (exact) return exact.key
  if (/单号|编号|EXP-|APP-|AP-|RE-|AD-/i.test(normalized)) return 'claim_no'
  if (/状态|草稿|审批|退回|归档|完成/.test(normalized)) return 'status'
  if (/上周|本周|去年|今年|月份|时间|日期|[0-9]{4}-[0-9]{2}/.test(normalized)) return 'time_range'
  return 'keyword'
}

export function selectGuidedQueryMode(state, queryMode) {
  const current = normalizeGuidedFlowState(state)
  const mode = GUIDED_QUERY_MODES.find((item) => item.key === normalizeText(queryMode))
  if (!mode) {
    return current
  }
  return {
    ...current,
    mode: GUIDED_FLOW_MODE_STATUS_QUERY,
    stepKey: mode.key === 'status' ? 'status_value' : 'query_value',
    values: {
      ...current.values,
      query_mode: mode.key,
      query_mode_label: mode.label
    },
    pendingInterruptionText: ''
  }
}

export function buildGuidedQueryPromptText(state) {
  const current = normalizeGuidedFlowState(state)
  const mode = normalizeText(current.values.query_mode)
  if (!mode) {
    return buildGuidedStatusQueryStartText()
  }
  if (mode === 'status') {
    return [
      '请选择要查询的单据状态。',
      '',
      '我会按所选状态筛选最近的报销单据。'
    ].join('\n')
  }
  const prompts = {
    claim_no: '请输入单据编号，例如 RE-20260525103045-ABCDEFGH。',
    time_range: '请输入查询时间范围，例如：上周、今年 5 月、2025 年全年。',
    keyword: '请输入地点、客户或事由关键词，例如：上海电力、北京、服务器部署。'
  }
  return prompts[mode] || '请补充查询条件。'
}

export function buildGuidedStatusQueryText(state, valueText) {
  const current = normalizeGuidedFlowState(state)
  const mode = normalizeText(current.values.query_mode)
  const value = normalizeText(valueText)
  if (mode === 'claim_no') {
    return `帮我查询单号 ${value} 的报销单状态`
  }
  if (mode === 'status') {
    return `帮我查询${value}的报销单据，筛选最近的 5 条记录`
  }
  if (mode === 'time_range') {
    return `帮我查询${value}提交或发生的报销单据状态，筛选最近的 5 条记录`
  }
  return `帮我查询地点或事由包含“${value}”的报销单据状态，筛选最近的 5 条记录`
}