import dayjs from "dayjs";

/** 审批类型（与后端字段 approvalType 对齐，后期可同步） */
export const APPROVAL_TYPE_OPTIONS = [
  { value: "cost_reimburse", label: "费用报销申请", cellBg: "#e8f8ef", cellColor: "#1a7f4b" },
  { value: "travel_reimburse", label: "差旅报销申请", cellBg: "#f0f2f5", cellColor: "#606266" },
  { value: "overtime", label: "加班申请", cellBg: "#fdf3e8", cellColor: "#c45c26" },
  { value: "leave", label: "请假申请", cellBg: "#fce8f0", cellColor: "#b84d7a" },
  { value: "work_handover", label: "工作交接申请", cellBg: "#f0e8fc", cellColor: "#6b4d9e" },
  { value: "regular", label: "转正申请", cellBg: "#e8f4fc", cellColor: "#2b6cb0" },
  { value: "resign", label: "离职申请", cellBg: "#ffffff", cellColor: "#303133", border: "1px solid #e4e7ed" },
  { value: "transfer", label: "调岗申请", cellBg: "#ffffff", cellColor: "#303133", border: "1px solid #e4e7ed" },
  { value: "out_office", label: "公出申请", cellBg: "#e8f4ff", cellColor: "#409eff" },
  { value: "business_trip", label: "出差申请", cellBg: "#fdf6ec", cellColor: "#e6a23c" },
  { value: "procurement", label: "采购审批", cellBg: "#f4f4f5", cellColor: "#909399" },
  { value: "quotation", label: "报价审批", cellBg: "#f4ecfc", cellColor: "#9b59b6" },
  { value: "shipment", label: "发货审批", cellBg: "#e8faf6", cellColor: "#1abc9c" },
];

/** 审批状态 approvalStatus */
export const APPROVAL_STATUS_OPTIONS = [
  { value: "pending", label: "审核中" },
  { value: "approved", label: "已通过" },
  { value: "rejected", label: "已驳回" },
  { value: "cancelled", label: "已撤销" },
];

/** 审批方式 approvalMode */
export const APPROVAL_MODE_OPTIONS = [
  { value: "parallel", label: "与签" },
  { value: "or_sign", label: "或签" },
];

/**
 * 提交审批模板（按类型一键填报，字段后期与后端模板同步）
 */
export const SUBMIT_TEMPLATES = {
  cost_reimburse: {
    approvalType: "cost_reimburse",
    label: "费用报销",
    summaryPlaceholder: "请填写报销事由、金额等",
    fields: [
      { key: "summary", label: "申请事由", type: "textarea", required: true, rows: 3 },
      { key: "amount", label: "报销金额(元)", type: "number", required: true, min: 0, precision: 2 },
    ],
    approvalMode: "parallel",
  },
  travel_reimburse: {
    approvalType: "travel_reimburse",
    label: "差旅报销",
    summaryPlaceholder: "出差行程与费用说明",
    fields: [
      { key: "summary", label: "差旅说明", type: "textarea", required: true, rows: 3 },
      { key: "amount", label: "报销金额(元)", type: "number", required: true, min: 0, precision: 2 },
      { key: "tripDays", label: "出差天数", type: "number", required: false, min: 0, precision: 0 },
    ],
    approvalMode: "parallel",
  },
  overtime: {
    approvalType: "overtime",
    label: "加班申请",
    fields: [
      { key: "summary", label: "加班事由", type: "textarea", required: true, rows: 3 },
      { key: "overtimeDate", label: "加班日期", type: "date", required: true },
      { key: "hours", label: "加班时长(小时)", type: "number", required: true, min: 0.5, precision: 1 },
    ],
    approvalMode: "parallel",
  },
  leave: {
    approvalType: "leave",
    label: "请假申请",
    fields: [
      { key: "leaveType", label: "请假类型", type: "select", required: true, options: [
        { label: "年假", value: "annual" },
        { label: "病假", value: "sick" },
        { label: "事假", value: "personal" },
        { label: "调休", value: "compensatory" },
      ] },
      { key: "summary", label: "请假事由", type: "textarea", required: true, rows: 2 },
      { key: "dateRange", label: "请假时间", type: "datetimerange", required: true },
    ],
    approvalMode: "parallel",
  },
  work_handover: {
    approvalType: "work_handover",
    label: "工作交接",
    fields: [
      { key: "summary", label: "交接说明", type: "textarea", required: true, rows: 3 },
      { key: "handoverTo", label: "交接对象", type: "text", required: true },
    ],
    approvalMode: "parallel",
  },
  regular: {
    approvalType: "regular",
    label: "转正申请",
    fields: [
      { key: "summary", label: "转正说明", type: "textarea", required: true, rows: 3 },
      { key: "regularDate", label: "拟转正日期", type: "date", required: true },
    ],
    approvalMode: "parallel",
  },
  resign: {
    approvalType: "resign",
    label: "离职申请",
    fields: [
      { key: "summary", label: "离职原因", type: "textarea", required: true, rows: 3 },
      { key: "lastWorkDay", label: "最后工作日", type: "date", required: true },
    ],
    approvalMode: "or_sign",
  },
  transfer: {
    approvalType: "transfer",
    label: "调岗申请",
    fields: [
      { key: "summary", label: "调岗说明", type: "textarea", required: true, rows: 2 },
      { key: "targetDept", label: "目标部门", type: "text", required: true },
      { key: "targetPost", label: "目标岗位", type: "text", required: true },
    ],
    approvalMode: "parallel",
  },
};

export const STORAGE_KEY = "oa_unified_approve_list_v1";

export function approvalTypeLabel(v) {
  return APPROVAL_TYPE_OPTIONS.find((x) => x.value === v)?.label || "—";
}

export function approvalTypeStyle(v) {
  const hit = APPROVAL_TYPE_OPTIONS.find((x) => x.value === v);
  if (!hit) return {};
  return {
    backgroundColor: hit.cellBg,
    color: hit.cellColor,
    border: hit.border || "none",
  };
}

export function approvalStatusLabel(v) {
  return APPROVAL_STATUS_OPTIONS.find((x) => x.value === v)?.label || "—";
}

export function approvalStatusTagType(v) {
  if (v === "approved") return "success";
  if (v === "rejected") return "danger";
  if (v === "cancelled") return "info";
  return "primary";
}

export function approvalModeLabel(v) {
  if (v === "countersign") return "或签";
  return APPROVAL_MODE_OPTIONS.find((x) => x.value === v)?.label || "与签";
}

export function unreadLabel(v) {
  return v ? "是" : "否";
}

export function buildDefaultFlowNodes() {
  return [
    {
      approverId: "mock_supervisor",
      approverName: "直属上级",
      sortOrder: 1,
      nodeOrder: 1,
      nodeStatus: "process",
      approveOpinion: "",
      approveTime: "",
    },
    {
      approverId: "mock_manager",
      approverName: "部门经理",
      sortOrder: 2,
      nodeOrder: 2,
      nodeStatus: "wait",
      approveOpinion: "",
      approveTime: "",
    },
  ];
}

function demoRow(partial) {
  const now = dayjs().format("YYYY-MM-DD HH:mm:ss");
  return {
    id: partial.id,
    bizId: partial.bizId || partial.id,
    applicantNo: partial.applicantNo,
    applicantName: partial.applicantName,
    approvalType: partial.approvalType,
    approvalMode: partial.approvalMode || "parallel",
    unread: partial.unread ?? false,
    approvalStatus: partial.approvalStatus || "pending",
    createTime: partial.createTime || now,
    summary: partial.summary || "",
    formPayload: partial.formPayload || {},
    approvalFlowNodes: partial.approvalFlowNodes || buildDefaultFlowNodes(),
    currentNodeIndex: partial.currentNodeIndex ?? 0,
    approvalRecords: partial.approvalRecords || [],
    rejectReason: partial.rejectReason || "",
    sourceRoute: partial.sourceRoute || "",
  };
}

/** 初始演示数据（共 22 条，与原型数量一致） */
export function createInitialMockRows() {
  const types = [
    "cost_reimburse",
    "travel_reimburse",
    "overtime",
    "leave",
    "work_handover",
    "regular",
    "resign",
    "transfer",
    "cost_reimburse",
    "leave",
    "overtime",
    "travel_reimburse",
    "work_handover",
    "regular",
    "cost_reimburse",
    "leave",
    "transfer",
    "resign",
    "overtime",
    "travel_reimburse",
    "cost_reimburse",
    "leave",
  ];
  const applicants = [
    { no: "007", name: "苹果" },
    { no: "Guest001", name: "外部用户" },
    { no: "0056", name: "王五" },
    { no: "0042", name: "李四" },
    { no: "0088", name: "猫猫" },
    { no: "0012", name: "张三" },
    { no: "0033", name: "赵六" },
  ];
  const summaries = [
    "办公用品采购报销",
    "上海出差差旅费",
    "周末项目加班",
    "年假 3 天",
    "离职工作交接",
    "试用期转正申请",
    "个人原因离职",
    "调至销售部",
    "客户接待餐费",
    "病假 1 天",
    "节假日值班加班",
    "北京培训差旅",
    "项目文档交接",
    "研发岗转正",
    "通讯费报销",
    "事假半天",
    "调岗至市场部",
    "协商离职",
    "工作日延时加班",
    "成都展会差旅",
    "交通费报销",
    "调休 1 天",
  ];
  const statuses = ["pending", "pending", "pending", "approved", "pending", "pending", "rejected", "pending"];
  return types.map((approvalType, i) => {
    const ap = applicants[i % applicants.length];
    const daysAgo = i % 14;
    return demoRow({
      id: `mock_${i + 1}`,
      bizId: `BIZ${String(2025031400 + i)}`,
      applicantNo: ap.no,
      applicantName: ap.name,
      approvalType,
      approvalMode: i % 5 === 0 ? "or_sign" : "parallel",
      unread: i % 3 === 0,
      approvalStatus: statuses[i % statuses.length],
      createTime: dayjs().subtract(daysAgo, "day").hour(9 + (i % 8)).minute((i * 7) % 60).second(0).format("YYYY-MM-DD HH:mm:ss"),
      summary: summaries[i],
      formPayload: { summary: summaries[i] },
    });
  });
}

export function loadStoredRows() {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    if (!raw) return null;
    const parsed = JSON.parse(raw);
    return Array.isArray(parsed) ? parsed : null;
  } catch {
    return null;
  }
}

export function saveStoredRows(rows) {
  try {
    localStorage.setItem(STORAGE_KEY, JSON.stringify(rows));
  } catch {
    /* ignore quota */
  }
}

export function createEmptySubmitForm(templateKey) {
  const tpl = SUBMIT_TEMPLATES[templateKey];
  const payload = { summary: "" };
  (tpl?.fields || []).forEach((f) => {
    if (f.type === "number") payload[f.key] = undefined;
    else if (f.type === "datetimerange") payload[f.key] = [];
    else payload[f.key] = "";
  });
  return {
    templateKey: templateKey || "",
    approvalMode: tpl?.approvalMode || "parallel",
    formPayload: payload,
    approvalFlowNodes: buildDefaultFlowNodes(),
  };
}