import { Hono } from 'hono';
import pool from '../db.js';
import type {
  VehicleRow,
  Vehicle,
  SummaryData,
  TypeSummary,
  ModelSummary,
  BatchSummary,
  BatchGroup,
  InventoryTypeSummary,
} from '../types.js';

const app = new Hono();

const MAIN_SQL = `SELECT
    truck.id AS id,
    truck.plate_number AS 车牌号,
    truck.vin AS vin,
    truck.brand AS 车辆品牌,
    truck.model AS 车辆型号,
    truck.color AS 车辆颜色,
    truck.rent_from_company AS 租赁公司,
    dic_ascription_status.dic_name AS 车辆归属状态Label,
    dic_type.dic_name AS 车辆型号Label,
    truck.stock_area AS 库存区域,
    truck.truck_rent_status AS 车辆租赁状态,
    dic_status.dic_name AS 车辆租赁状态Label,
    truck.is_operation AS 是否营运,
    info.province AS 省,
    info.city AS 市,
    info.lat AS 纬度,
    info.lng AS 经度,
    dic_brand.dic_name AS 车辆品牌Label,
    si.contract_id AS 合同ID,
    COALESCE(c.contract_no, si.contract_no) AS 合同编码,
    cus.customer_name AS 客户名称,
    org.org_name AS 合同归属公司,
    dep.dep_name AS 合同归属部门,
    org_truck.org_name AS 主体,
    c.project_name AS 项目名称,
    u.user_name AS 客户经理
FROM tab_truck truck
LEFT JOIN tab_truck_remote_sync_realtime_info info
       ON info.id = truck.id
LEFT JOIN tab_dic dic_type
       ON dic_type.parent_code = 'dic_truck_type'
      AND dic_type.dic_code = truck.model
      AND dic_type.is_deleted = 0
LEFT JOIN tab_dic dic_status
       ON dic_status.parent_code = 'dic_truck_rent_status'
      AND dic_status.dic_code = truck.truck_rent_status
      AND dic_status.is_deleted = 0
LEFT JOIN tab_dic dic_brand
       ON dic_brand.parent_code = 'dic_vehicle_brand'
      AND dic_brand.dic_code = truck.brand
      AND dic_brand.is_deleted = 0
LEFT JOIN tab_truck_status_info si
       ON si.truck_id = truck.id
      AND si.is_deleted = 0
LEFT JOIN tab_contract c
       ON c.id = si.contract_id
      AND c.is_deleted = 0
LEFT JOIN tab_customer cus
       ON cus.id = c.customer_id
      AND cus.is_deleted = 0
LEFT JOIN tab_org org
       ON org.id = c.org_id
      AND org.is_deleted = 0
LEFT JOIN tab_org org_truck
       ON org_truck.id = truck.org_id
      AND org_truck.is_deleted = 0
LEFT JOIN tab_dic dic_ascription_status
       ON dic_ascription_status.parent_code = 'dic_truck_ascription_status'
      AND dic_ascription_status.dic_code = truck.ascription_status
      AND dic_ascription_status.is_deleted = 0
LEFT JOIN tab_user u
       ON u.id = c.bd
      AND u.is_deleted = 0
LEFT JOIN tab_department dep
       ON dep.id = u.dep_id
      AND dep.is_deleted = 0
WHERE truck.is_deleted = 0
  AND truck.is_operation = 1`;

// Region mapping: province/city -> display region
const REGIONS = ['嘉兴', '广东', '北京', '新疆', '其他'] as const;
const INVENTORY_REGIONS = ['江浙沪', '广东', '新疆', '其它'] as const;

function mapRegion(province: string | null, city: string | null): string {
  if (!province && !city) return '其他';
  const loc = (city || province || '').trim();
  if (loc.includes('嘉兴') || loc.includes('浙江') || loc.includes('上海') || loc.includes('江苏')) return '嘉兴';
  if (loc.includes('广东') || loc.includes('广州') || loc.includes('深圳') || loc.includes('佛山') || loc.includes('东莞')) return '广东';
  if (loc.includes('北京')) return '北京';
  if (loc.includes('新疆') || loc.includes('乌鲁木齐')) return '新疆';
  // Also check province
  const prov = (province || '').trim();
  if (prov.includes('浙江') || prov.includes('上海') || prov.includes('江苏')) return '嘉兴';
  if (prov.includes('广东')) return '广东';
  if (prov.includes('北京')) return '北京';
  if (prov.includes('新疆')) return '新疆';
  return '其他';
}

function mapInventoryRegion(region: string): string {
  if (region === '嘉兴') return '江浙沪';
  if (region === '广东') return '广东';
  if (region === '新疆') return '新疆';
  return '其它';
}

// Map rental status to frontend status
// Actual DB values: 在库(0), 自营(1), 租赁(2), 待交车(7), 挂靠(8), 异动(12)
function mapStatus(rentStatus: string | null): 'Operating' | 'Inventory' | 'Abnormal' {
  if (!rentStatus) return 'Inventory';
  const s = rentStatus.trim();
  if (s === '租赁' || s === '自营' || s === '挂靠') return 'Operating';
  if (s === '在库' || s === '待交车') return 'Inventory';
  if (s === '异动') return 'Abnormal';
  return 'Inventory';
}

// Map ownership status
// Actual DB values: 自有(0), 外租(1), 挂靠(2)
function mapOwnership(ascriptionLabel: string | null): string {
  if (!ascriptionLabel) return 'Self';
  const s = ascriptionLabel.trim();
  if (s === '自有') return 'Self';
  if (s === '外租') return 'Leased';
  if (s === '挂靠') return 'Hanging';
  return 'Self';
}

// Derive vehicle type category from model label
// Actual DB values: 4.5吨冷链车, 4.5吨货车, 18吨双飞翼货车, 18吨厢式货车, 49吨牵引车头, 35吨牵引车头,
//   重型集装箱半挂车, 重型平板半挂车, 氢能叉车, SJ型蓄电池观光车, 公务用车/小客车, 挂靠油车
function deriveType(modelLabel: string | null, brandLabel: string | null): string {
  const label = (modelLabel || '').trim();
  if (label.includes('4.5吨')) return '4.5T';
  if (label.includes('18吨')) return '18T';
  if (label.includes('49吨')) return '49T';
  if (label.includes('35吨')) return '35T';
  if (label.includes('叉车')) return '叉车';
  if (label.includes('半挂车')) return '挂车';
  return '其他车型';
}

// Tag → alias mapping with sort order
// tag is generated as: brand-modelLabel-color[+rentCompany if 外租]
// Some tags are merged (e.g. 嘉氢 red + 嘉氢 blue/green → one alias)
const MODEL_ALIAS_MAP: Record<string, { alias: string; order: number }> = {
  // 4.5T 普货
  '现代-4.5吨货车-白色广州开发区交投氢能运营管理有限公司': { alias: '现代4.5T普货（交投）', order: 101 },
  '现代-4.5吨货车-白': { alias: '现代4.5T普货（恒运）', order: 102 },
  // 4.5T 冷链
  '帕力安牌-4.5吨冷链车-白色广州开发区交投氢能运营管理有限公司': { alias: '现代4.5T冷链（交投）', order: 201 },
  '帕力安牌-4.5吨冷链车-白色': { alias: '现代4.5T冷链（羚牛）', order: 202 },
  '跃进-4.5吨冷链车-白/绿/灰': { alias: '跃进4.5T冷链', order: 203 },
  // 18T
  '飞驰-18吨厢式货车-红': { alias: '飞驰18T（红车）', order: 301 },
  '飞驰-18吨厢式货车-白/绿': { alias: '飞驰18T（白车）', order: 302 },
  '楚风-18吨厢式货车-白': { alias: '楚风18T厢货', order: 303 },
  '苏龙-18吨双飞翼货车-白': { alias: '苏龙18T飞翼', order: 304 },
  '苏龙-18吨双飞翼货车-白色': { alias: '苏龙18T飞翼', order: 304 }, // dirty data, merge
  '苏龙-18吨双飞翼货车-白安吉天地物流科技有限公司': { alias: '苏龙18T飞翼（安吉）', order: 305 },
  '帕力安牌-18吨双飞翼货车-白': { alias: '现代18T双飞翼（羚牛）', order: 306 },
  // 49T
  '宇通-49吨牵引车头-白': { alias: '49T宇通', order: 401 },
  '飞驰-49吨牵引车头-白/蓝/绿': { alias: '49T飞驰', order: 402 },
  '飞驰-49吨牵引车头-白/蓝/绿嘉兴氢能产业发展股份有限公司': { alias: '49T飞驰（嘉氢）', order: 403 },
  '飞驰-49吨牵引车头-红嘉兴氢能产业发展股份有限公司': { alias: '49T飞驰（嘉氢）', order: 403 }, // merge with above
  '飞驰-49吨牵引车头-红浙江氢能产业发展有限公司': { alias: '49T飞驰（浙氢-红）', order: 404 },
  '飞驰-49吨牵引车头-白/蓝/绿浙江氢能产业发展有限公司': { alias: '49T飞驰（浙氢-蓝白绿）', order: 405 },
  '楚风-49吨牵引车头-蓝/黑海珀特科技(北京)有限公司': { alias: '49T楚风（海珀特）', order: 406 },
  // 其他
  '红岩-35吨牵引车头-红色': { alias: '35T油车', order: 501 },
  '其他-氢能叉车-蓝白绿': { alias: '氢能叉车', order: 502 },
  '通华-重型集装箱半挂车-红色浙江锦昌仓储有限公司': { alias: '挂车', order: 503 },
  '通华-重型集装箱半挂车-红色嘉兴市鼎义物流有限公司': { alias: '挂车', order: 503 },
  '通华-重型集装箱半挂车-红色': { alias: '挂车', order: 503 },
  '大通-重型集装箱半挂车-红色': { alias: '挂车', order: 503 },
  '明威-重型集装箱半挂车-红色': { alias: '挂车', order: 503 },
  '明威-重型集装箱半挂车-红': { alias: '挂车', order: 503 },
  '万风-重型平板半挂车-红': { alias: '挂车', order: 503 },
  '舒捷-SJ型蓄电池观光车-蓝白': { alias: '观光车', order: 504 },
  '东风-挂靠油车-白色': { alias: '公务车/挂靠车', order: 505 },
  '腾势-公务用车/小客车-黑': { alias: '公务车/挂靠车', order: 505 },
  '腾势-公务用车/小客车-白': { alias: '公务车/挂靠车', order: 505 },
  '其他-公务用车/小客车-蓝色': { alias: '公务车/挂靠车', order: 505 },
  '远程牌-公务用车/小客车-白': { alias: '公务车/挂靠车', order: 505 },
  '大通-公务用车/小客车-灰': { alias: '公务车/挂靠车', order: 505 },
};

function deriveModelTag(
  brandLabel: string | null,
  modelLabel: string | null,
  color: string | null,
  ownershipLabel: string | null,
  rentCompany: string | null,
): string {
  const brand = (brandLabel || '').trim();
  const model = (modelLabel || '').trim();
  const c = (color || '').trim();
  const isRented = ownershipLabel?.trim() === '外租';
  const company = isRented ? (rentCompany || '').trim() : '';

  if (!brand && !model) return '未知车型';
  const tag = `${brand}-${model}-${c}${company}`;
  const mapped = MODEL_ALIAS_MAP[tag];
  return mapped ? mapped.alias : tag;
}

function getModelOrder(model: string): number {
  // Find the order from alias mapping
  for (const entry of Object.values(MODEL_ALIAS_MAP)) {
    if (entry.alias === model) return entry.order;
  }
  return 999;
}

function transformRow(row: VehicleRow): Vehicle {
  const region = mapRegion(row.省, row.市);
  return {
    id: row.id,
    plateNumber: row.车牌号 || '',
    vin: row.vin || '',
    type: deriveType(row.车辆型号Label, row.车辆品牌Label),
    model: deriveModelTag(row.车辆品牌Label, row.车辆型号Label, row.车辆颜色, row.车辆归属状态Label, row.租赁公司),
    color: row.车辆颜色 || '',
    location: region,
    region,
    status: mapStatus(row.车辆租赁状态Label),
    ownership: mapOwnership(row.车辆归属状态Label),
    rentCompany: row.租赁公司 || '',
    contractNo: row.合同编码,
    customerName: row.客户名称,
    orgName: row.合同归属公司,
    departmentName: row.合同归属部门,
    subjectOrg: row.主体,
    projectName: row.项目名称,
    customerManager: row.客户经理,
    brandLabel: row.车辆品牌Label,
  };
}

// Cache for vehicles data (refresh every 5 minutes)
let cachedVehicles: Vehicle[] = [];
let lastFetchTime = 0;
const CACHE_TTL = 60 * 1000;

async function getVehicles(): Promise<Vehicle[]> {
  const now = Date.now();
  if (cachedVehicles.length > 0 && now - lastFetchTime < CACHE_TTL) {
    return cachedVehicles;
  }
  const [rows] = await pool.query<any[]>(MAIN_SQL);
  cachedVehicles = (rows as VehicleRow[]).map(transformRow);
  lastFetchTime = now;
  return cachedVehicles;
}

function getRegionCounts(vehicles: Vehicle[], regions: readonly string[]): Record<string, number> {
  return regions.reduce((acc, reg) => {
    acc[reg] = vehicles.filter((v) => v.location === reg).length;
    return acc;
  }, {} as Record<string, number>);
}

function getStats(list: Vehicle[]) {
  return {
    total: list.length,
    inventory: list.filter((v) => v.status === 'Inventory').length,
    inventoryRegions: getRegionCounts(
      list.filter((v) => v.status === 'Inventory'),
      REGIONS,
    ),
    pending: 0,
    operating: list.filter((v) => v.status === 'Operating').length,
    weeklyDelivered: 0,
    weeklyReturned: 0,
    weeklyReplaced: 0,
  };
}

// Week range: last Saturday 00:00 to this Friday 23:59
// MySQL: WEEKDAY() returns 0=Monday..6=Sunday, Saturday=5
// "上周六-本周五": offset from today to last Saturday
const WEEK_START_SQL = `DATE_SUB(CURDATE(), INTERVAL (WEEKDAY(CURDATE()) + 2) % 7 DAY)`;
const WEEK_END_SQL = `DATE_ADD(${WEEK_START_SQL}, INTERVAL 7 DAY)`;

interface WeeklyStats {
  pendingDelivery: number;
  weeklyNew: number;
  weeklyRemoved: number;
  weeklyDelivered: number;
  weeklyReturned: number;
  weeklyReplaced: number;
}

// 交车单 SQL
const DELIVERED_SQL = `SELECT
    take.id, DATE(take.handover_date) AS handover_date,
    truck.id AS truck_id, truck.plate_number,
    dic_contract_type.dic_name AS contract_type,
    customer.customer_name
FROM tab_truck_rent_take take
LEFT JOIN tab_truck_rent_task task ON task.id = take.truck_rent_task_id
LEFT JOIN tab_contract_rent_truck rent_truck ON rent_truck.id = task.contract_rent_truck_id
LEFT JOIN tab_truck truck ON rent_truck.truck_id = truck.id
LEFT JOIN tab_contract contract ON task.contract_id = contract.id
LEFT JOIN tab_customer customer ON contract.customer_id = customer.id
LEFT JOIN tab_dic dic_contract_type
       ON dic_contract_type.parent_code = 'dic_contract_type'
      AND dic_contract_type.dic_code = contract.contract_type
      AND dic_contract_type.is_deleted = 0
WHERE take.is_deleted = 0 AND take.take_name IS NOT NULL
  AND task.task_type = 1 AND task.task_status = 1 AND take.update_time IS NOT NULL`;

// 还车单 SQL
const RETURNED_SQL = `SELECT
    r.id, DATE(r.return_date) AS handover_date,
    truck.id AS truck_id, truck.plate_number,
    dic_contract_type.dic_name AS contract_type,
    customer.customer_name
FROM tab_truck_rent_return r
LEFT JOIN tab_truck_rent_task task ON task.id = r.truck_rent_task_id
LEFT JOIN tab_contract_rent_truck rent_truck ON rent_truck.id = task.contract_rent_truck_id
LEFT JOIN tab_truck truck ON rent_truck.truck_id = truck.id
LEFT JOIN tab_contract contract ON task.contract_id = contract.id
LEFT JOIN tab_customer customer ON contract.customer_id = customer.id
LEFT JOIN tab_dic dic_contract_type
       ON dic_contract_type.parent_code = 'dic_contract_type'
      AND dic_contract_type.dic_code = contract.contract_type
      AND dic_contract_type.is_deleted = 0
WHERE r.is_deleted = 0 AND r.return_date IS NOT NULL`;

// 替换车单 SQL
const REPLACED_SQL = `SELECT
    take.id, DATE(take.handover_date) AS handover_date,
    truck.id AS truck_id, truck.plate_number,
    dic_contract_type.dic_name AS contract_type,
    customer.customer_name
FROM tab_truck_rent_take take
LEFT JOIN tab_truck_rent_task task ON task.id = take.truck_rent_task_id
LEFT JOIN tab_contract_rent_truck rent_truck ON rent_truck.id = task.contract_rent_truck_id
LEFT JOIN tab_truck truck ON rent_truck.truck_id = truck.id
LEFT JOIN tab_contract contract ON task.contract_id = contract.id
LEFT JOIN tab_customer customer ON contract.customer_id = customer.id
LEFT JOIN tab_dic dic_contract_type
       ON dic_contract_type.parent_code = 'dic_contract_type'
      AND dic_contract_type.dic_code = contract.contract_type
      AND dic_contract_type.is_deleted = 0
WHERE take.is_deleted = 0 AND take.take_name IS NOT NULL
  AND task.task_type = 3 AND task.task_status = 1 AND take.update_time IS NOT NULL`;

let cachedWeeklyStats: WeeklyStats | null = null;
let weeklyStatsLastFetch = 0;

async function getWeeklyStats(): Promise<WeeklyStats> {
  const now = Date.now();
  if (cachedWeeklyStats && now - weeklyStatsLastFetch < CACHE_TTL) {
    return cachedWeeklyStats;
  }

  const [[pendingRows], [newRows], [removedRows], [deliveredRows], [returnedRows], [replacedRows]] = await Promise.all([
    pool.query<any[]>(`SELECT COUNT(*) AS cnt FROM tab_truck WHERE is_deleted=0 AND is_operation=1 AND truck_rent_status=7`),
    pool.query<any[]>(`SELECT COUNT(*) AS cnt FROM tab_truck WHERE is_deleted=0 AND is_operation=1 AND create_time >= ${WEEK_START_SQL} AND create_time < ${WEEK_END_SQL}`),
    pool.query<any[]>(`SELECT COUNT(*) AS cnt FROM tab_truck WHERE (is_operation=0 OR is_deleted=1) AND update_time >= ${WEEK_START_SQL} AND update_time < ${WEEK_END_SQL}`),
    pool.query<any[]>(`SELECT COUNT(*) AS cnt FROM (${DELIVERED_SQL}) t WHERE t.handover_date >= ${WEEK_START_SQL} AND t.handover_date < ${WEEK_END_SQL}`),
    pool.query<any[]>(`SELECT COUNT(*) AS cnt FROM (${RETURNED_SQL}) t WHERE t.handover_date >= ${WEEK_START_SQL} AND t.handover_date < ${WEEK_END_SQL}`),
    pool.query<any[]>(`SELECT COUNT(*) AS cnt FROM (${REPLACED_SQL}) t WHERE t.handover_date >= ${WEEK_START_SQL} AND t.handover_date < ${WEEK_END_SQL}`),
  ]);

  cachedWeeklyStats = {
    pendingDelivery: (pendingRows as any[])[0]?.cnt || 0,
    weeklyNew: (newRows as any[])[0]?.cnt || 0,
    weeklyRemoved: (removedRows as any[])[0]?.cnt || 0,
    weeklyDelivered: (deliveredRows as any[])[0]?.cnt || 0,
    weeklyReturned: (returnedRows as any[])[0]?.cnt || 0,
    weeklyReplaced: (replacedRows as any[])[0]?.cnt || 0,
  };
  weeklyStatsLastFetch = now;
  return cachedWeeklyStats;
}

// GET /api/vehicles/summary
app.get('/summary', async (c) => {
  const [vehicles, weekly] = await Promise.all([getVehicles(), getWeeklyStats()]);
  const summary: SummaryData = {
    totalAssets: vehicles.length,
    operating: {
      total: vehicles.filter((v) => v.status === 'Operating').length,
      self: vehicles.filter((v) => v.status === 'Operating' && v.ownership === 'Self').length,
      leased: vehicles.filter((v) => v.status === 'Operating' && v.ownership === 'Leased').length,
      public: vehicles.filter((v) => v.status === 'Operating' && v.ownership === 'Public').length,
      hanging: vehicles.filter((v) => v.status === 'Operating' && v.ownership === 'Hanging').length,
    },
    inventory: {
      total: vehicles.filter((v) => v.status === 'Inventory').length,
      inStock: vehicles.filter((v) => v.status === 'Inventory').length,
      abnormal: vehicles.filter((v) => v.status === 'Abnormal').length,
    },
    ...weekly,
  };
  return c.json(summary);
});

// GET /api/vehicles/by-type
app.get('/by-type', async (c) => {
  const vehicles = await getVehicles();

  const typeFilters = [
    { name: '4.5T普货', filter: (v: Vehicle) => v.type === '4.5T' && !v.model.includes('冷链') },
    { name: '4.5T冷链', filter: (v: Vehicle) => v.type === '4.5T' && v.model.includes('冷链') },
    { name: '18T', filter: (v: Vehicle) => v.type === '18T' },
    { name: '49T', filter: (v: Vehicle) => v.type === '49T' },
    { name: '其他', filter: (v: Vehicle) => !['4.5T', '18T', '49T'].includes(v.type) },
  ];

  const result: TypeSummary[] = typeFilters.map((t) => {
    const typeVehicles = vehicles.filter(t.filter);
    const models = Array.from(new Set(typeVehicles.map((v) => v.model)));

    const modelSummaries: ModelSummary[] = models.map((model) => {
      const modelVehicles = typeVehicles.filter((v) => v.model === model);
      // Use contractNo as batch identifier
      const batches = Array.from(new Set(modelVehicles.map((v) => v.contractNo || '未知'))).filter(Boolean);

      return {
        model,
        ...getStats(modelVehicles),
        batches: batches.map((batch) => ({
          batch,
          ...getStats(modelVehicles.filter((v) => (v.contractNo || '未知') === batch)),
        })),
      };
    });

    const typeStats = getStats(typeVehicles);
    return {
      type: t.name,
      totalAssets: typeVehicles.length,
      totalInventory: typeStats.inventory,
      totalOperating: typeStats.operating,
      inventoryRegions: typeStats.inventoryRegions,
      pending: typeStats.pending,
      weeklyDelivered: typeStats.weeklyDelivered,
      weeklyReturned: typeStats.weeklyReturned,
      weeklyReplaced: typeStats.weeklyReplaced,
      models: modelSummaries.sort((a, b) => getModelOrder(a.model) - getModelOrder(b.model)),
    };
  });

  return c.json(result);
});

// GET /api/vehicles/by-batch
app.get('/by-batch', async (c) => {
  const vehicles = await getVehicles();
  const batches = Array.from(new Set(vehicles.map((v) => v.contractNo || '未知')))
    .filter(Boolean)
    .sort()
    .reverse();

  const result: BatchGroup[] = batches.map((batch) => {
    const batchVehicles = vehicles.filter((v) => (v.contractNo || '未知') === batch);
    const models = Array.from(new Set(batchVehicles.map((v) => v.model)));

    return {
      batch,
      ...getStats(batchVehicles),
      models: models.map((model) => {
        const modelVehicles = batchVehicles.filter((v) => v.model === model);
        return {
          model,
          type: modelVehicles[0]?.type || '',
          ...getStats(modelVehicles),
        };
      }),
    };
  });

  return c.json(result);
});

// GET /api/vehicles/inventory-analysis
app.get('/inventory-analysis', async (c) => {
  const vehicles = await getVehicles();

  const typeFilters = [
    { name: '4.5T普货', filter: (v: Vehicle) => v.type === '4.5T' && !v.model.includes('冷链') },
    { name: '4.5T冷链', filter: (v: Vehicle) => v.type === '4.5T' && v.model.includes('冷链') },
    { name: '18T', filter: (v: Vehicle) => v.type === '18T' },
    { name: '49T', filter: (v: Vehicle) => v.type === '49T' },
    { name: '其他', filter: (v: Vehicle) => !['4.5T', '18T', '49T'].includes(v.type) },
  ];

  const result: InventoryTypeSummary[] = typeFilters.map((t) => {
    const typeVehicles = vehicles.filter(t.filter);
    const models = Array.from(new Set(typeVehicles.map((v) => v.model)));

    const modelData = models.map((model) => {
      const modelVehicles = typeVehicles.filter((v) => v.model === model);
      const inventoryVehicles = modelVehicles.filter((v) => v.status === 'Inventory');

      return {
        model,
        totalAssets: modelVehicles.length,
        totalInventory: inventoryVehicles.length,
        regions: INVENTORY_REGIONS.reduce(
          (acc, reg) => {
            acc[reg] = inventoryVehicles.filter((v) => mapInventoryRegion(v.location) === reg).length;
            return acc;
          },
          {} as Record<string, number>,
        ),
      };
    });

    const typeInventory = typeVehicles.filter((v) => v.status === 'Inventory');

    return {
      type: t.name,
      totalAssets: typeVehicles.length,
      totalInventory: typeInventory.length,
      models: modelData,
      regionSubtotals: INVENTORY_REGIONS.reduce(
        (acc, reg) => {
          acc[reg] = typeInventory.filter((v) => mapInventoryRegion(v.location) === reg).length;
          return acc;
        },
        {} as Record<string, number>,
      ),
    };
  });

  return c.json(result);
});

// GET /api/vehicles/list — flat list with optional filters
app.get('/list', async (c) => {
  const vehicles = await getVehicles();
  const { batch, model, location, status, category } = c.req.query();

  let filtered = vehicles;
  if (batch && batch !== 'All') {
    filtered = filtered.filter((v) => (v.contractNo || '未知') === batch);
  }
  if (model && model !== 'All') {
    filtered = filtered.filter((v) => v.model === model);
  }
  if (location && location !== 'All') {
    // Support both display region names and inventory region names
    const inventoryRegionMap: Record<string, string> = { '江浙沪': '嘉兴', '其它': '其他' };
    const mappedLocation = inventoryRegionMap[location] || location;
    filtered = filtered.filter((v) => v.location === mappedLocation);
  }
  if (status && status !== 'All') {
    filtered = filtered.filter((v) => v.status === status);
  }
  if (category) {
    if (category === 'Inventory') {
      filtered = filtered.filter((v) => v.status === 'Inventory');
    } else if (category === 'Operating') {
      filtered = filtered.filter((v) => v.status === 'Operating');
    }
  }

  return c.json(
    filtered.map((v) => ({
      id: v.id,
      plateNumber: v.plateNumber,
      type: v.type,
      model: v.model,
      location: v.location,
      status: v.status,
      ownership: v.ownership,
      contractNo: v.contractNo,
      customerName: v.customerName,
      subjectOrg: v.subjectOrg,
    })),
  );
});

// GET /api/vehicles/weekly-detail?type=delivered|returned|replaced|pending
app.get('/weekly-detail', async (c) => {
  const type = c.req.query('type');
  let sql: string;
  if (type === 'delivered') {
    sql = `${DELIVERED_SQL} AND take.handover_date >= ${WEEK_START_SQL} AND take.handover_date < ${WEEK_END_SQL} ORDER BY take.handover_date DESC`;
  } else if (type === 'returned') {
    sql = `${RETURNED_SQL} AND r.return_date >= ${WEEK_START_SQL} AND r.return_date < ${WEEK_END_SQL} ORDER BY r.return_date DESC`;
  } else if (type === 'replaced') {
    sql = `${REPLACED_SQL} AND take.handover_date >= ${WEEK_START_SQL} AND take.handover_date < ${WEEK_END_SQL} ORDER BY take.handover_date DESC`;
  } else if (type === 'pending') {
    sql = `SELECT truck.id AS truck_id, truck.plate_number, NULL AS handover_date, NULL AS contract_type, NULL AS customer_name
           FROM tab_truck truck WHERE truck.is_deleted=0 AND truck.is_operation=1 AND truck.truck_rent_status=7`;
  } else {
    return c.json([]);
  }
  const [rows] = await pool.query<any[]>(sql);
  return c.json(rows);
});

// GET /api/vehicles/refresh — force cache refresh
app.get('/refresh', async (c) => {
  lastFetchTime = 0;
  const vehicles = await getVehicles();
  return c.json({ message: 'Cache refreshed', count: vehicles.length });
});

export default app;