/**
 * 数据库工具类 - 使用serverId作为主键的优化架构
 *
 * 架构设计：
 * 1. 使用serverId作为数据库主键，直接对应接口返回的id字段
 * 2. 保留原始的id字段，用于存储接口数据的完整性
 * 3. 添加userId字段实现多用户数据隔离
 * 4. 统一会话表和联系人表，兼容好友和群聊
 *
 * 优势：
 * - 直接使用服务器ID作为主键，避免ID冲突
 * - 通过userId实现多用户数据隔离
 * - 统一的会话和联系人表结构，兼容好友和群聊
 * - 支持复合索引，提高查询性能
 * - 支持用户登录记录和自动清理
 */

import Dexie, { Table } from "dexie";
import {
  KfUserListData,
  weChatGroup,
  ContractData,
  MessageListData,
} from "@/pages/pc/ckbox/data";

// ==================== 用户登录记录 ====================
export interface UserLoginRecord {
  serverId: string; // 主键: user_${userId}
  userId: number; // 用户ID
  lastLoginTime: string; // 最后登录时间
  loginCount: number; // 登录次数
  createTime: string; // 首次登录时间
  lastActiveTime: string; // 最后活跃时间
}

// ==================== 统一会话表（兼容好友和群聊） ====================
export interface ChatSession {
  serverId: string; // 主键
  userId: number; // 用户ID（数据隔离）
  id: number; // 原始ID
  type: "friend" | "group"; // 类型：好友或群聊

  // 通用字段
  wechatAccountId: number; // 所属客服账号
  nickname: string; // 显示名称
  conRemark?: string; // 备注名
  avatar: string; // 头像
  content: string; // 最新消息内容
  lastUpdateTime: string; // 最后更新时间
  config: {
    unreadCount: number; // 未读数量
    top: boolean; // 是否置顶
  };
  sortKey: string; // 预计算排序键

  // 好友特有字段（type='friend'时有效）
  wechatFriendId?: number; // 好友ID
  wechatId?: string; // 微信号
  alias?: string; // 别名

  // 群聊特有字段（type='group'时有效）
  chatroomId?: string; // 群聊ID
  chatroomOwner?: string; // 群主
  selfDisplayName?: string; // 群内昵称
  notice?: string; // 群公告
}

// ==================== 统一联系人表（兼容好友和群聊） ====================
export interface Contact {
  serverId: string; // 主键
  userId: number; // 用户ID（数据隔离）
  id: number; // 原始ID
  type: "friend" | "group"; // 类型：好友或群聊

  // 通用字段
  wechatAccountId: number; // 所属客服账号
  nickname: string; // 显示名称
  conRemark?: string; // 备注名
  avatar: string; // 头像
  lastUpdateTime: string; // 最后更新时间
  config?: any; // 配置信息
  sortKey: string; // 预计算排序键
  searchKey: string; // 预计算搜索键

  // 好友特有字段（type='friend'时有效）
  wechatFriendId?: number; // 好友ID
  wechatId?: string; // 微信号
  alias?: string; // 别名
  gender?: number; // 性别
  groupId?: number; // 标签ID（分组）
  region?: string; // 地区
  signature?: string; // 个性签名
  phone?: string; // 手机号
  quanPin?: string; // 全拼

  // 群聊特有字段（type='group'时有效）
  chatroomId?: string; // 群聊ID
  chatroomOwner?: string; // 群主
  selfDisplayName?: string; // 群内昵称
  notice?: string; // 群公告
  memberCount?: number; // 群成员数量
}

// ==================== 联系人标签映射表 ====================
export interface ContactLabelMap {
  serverId: string; // 主键: ${contactId}_${labelId}
  userId: number; // 用户ID（数据隔离）
  labelId: number; // 标签ID
  contactId: number; // 联系人ID
  contactType: "friend" | "group"; // 联系人类型
  sortKey: string; // 预计算排序键
  searchKey: string; // 预计算搜索键

  // 列表展示必需字段（轻量）
  avatar: string;
  nickname: string;
  conRemark?: string;
  unreadCount: number;
  lastUpdateTime: string;
}

// ==================== 保留原有数据类型（向后兼容） ====================
export interface KfUserWithServerId extends Omit<KfUserListData, "id"> {
  serverId: number | string; // 服务器ID作为主键
  userId: number; // 用户ID（数据隔离）
  id?: number; // 接口数据的原始ID字段
}

export interface NewContactListData {
  serverId: number | string; // 服务器ID作为主键
  userId: number; // 用户ID（数据隔离）
  id?: number; // 接口数据的原始ID字段
  groupName: string;
  contacts: Contact[];
  weChatGroup: Contact[];
}

// 数据库类
class CunkebaoDatabase extends Dexie {
  // ==================== 保留原有表（向后兼容） ====================
  kfUsers!: Table<KfUserWithServerId>;
  weChatGroup!: Table<weChatGroup>;
  contracts!: Table<ContractData>;
  newContactList!: Table<NewContactListData>;
  messageList!: Table<MessageListData>;

  // ==================== 新增统一表 ====================
  chatSessions!: Table<ChatSession>; // 统一会话表
  contactsUnified!: Table<Contact>; // 统一联系人表
  contactLabelMap!: Table<ContactLabelMap>; // 联系人标签映射表
  userLoginRecords!: Table<UserLoginRecord>; // 用户登录记录表

  constructor() {
    super("CunkebaoDatabase");

    // 版本1：使用serverId作为主键的架构（保留原有表）
    this.version(1).stores({
      kfUsers:
        "serverId, id, tenantId, wechatId, nickname, alias, avatar, gender, region, signature, bindQQ, bindEmail, bindMobile, createTime, currentDeviceId, isDeleted, deleteTime, groupId, memo, wechatVersion, lastUpdateTime, isOnline",
      weChatGroup:
        "serverId, id, wechatAccountId, tenantId, accountId, chatroomId, chatroomOwner, conRemark, nickname, chatroomAvatar,wechatChatroomId, groupId, config, notice, selfDisplyName",
      contracts:
        "serverId, id, wechatAccountId, wechatId, alias, conRemark, nickname, quanPin, avatar, gender, region, addFrom, phone, signature, accountId, extendFields, city, lastUpdateTime, isPassed, tenantId, groupId, thirdParty, additionalPicture, desc, config, lastMessageTime, duplicate",
      newContactList: "serverId, id, groupName, contacts",
      messageList:
        "serverId, id, dataType, wechatAccountId, tenantId, accountId, nickname, avatar, groupId, config, labels,  wechatId, alias, conRemark, quanPin, gender, region, addFrom, phone, signature, extendFields, city, lastUpdateTime, isPassed, thirdParty, additionalPicture, desc, lastMessageTime, duplicate, chatroomId, chatroomOwner, chatroomAvatar, notice, selfDisplyName",
    });

    // 版本2：添加用户隔离字段到原有表
    this.version(2)
      .stores({
        kfUsers:
          "serverId, userId, id, tenantId, wechatId, nickname, alias, avatar, gender, region, signature, bindQQ, bindEmail, bindMobile, createTime, currentDeviceId, isDeleted, deleteTime, groupId, memo, wechatVersion, lastUpdateTime, isOnline",
        weChatGroup:
          "serverId, userId, id, wechatAccountId, tenantId, accountId, chatroomId, chatroomOwner, conRemark, nickname, chatroomAvatar,wechatChatroomId, groupId, config, notice, selfDisplyName",
        contracts:
          "serverId, userId, id, wechatAccountId, wechatId, alias, conRemark, nickname, quanPin, avatar, gender, region, addFrom, phone, signature, accountId, extendFields, city, lastUpdateTime, isPassed, tenantId, groupId, thirdParty, additionalPicture, desc, config, lastMessageTime, duplicate",
        newContactList: "serverId, userId, id, groupName, contacts",
        messageList:
          "serverId, userId, id, dataType, wechatAccountId, tenantId, accountId, nickname, avatar, groupId, config, labels,  wechatId, alias, conRemark, quanPin, gender, region, addFrom, phone, signature, extendFields, city, lastUpdateTime, isPassed, thirdParty, additionalPicture, desc, lastMessageTime, duplicate, chatroomId, chatroomOwner, chatroomAvatar, notice, selfDisplyName",
      })
      .upgrade(trans => {
        // 为现有数据添加默认userId=0（需要手动清理）
        return trans
          .table("kfUsers")
          .toCollection()
          .modify(item => {
            item.userId = 0;
          });
      });

    // 版本3：添加新的统一表和用户登录记录表
    this.version(3).stores({
      // 保留原有表
      kfUsers:
        "serverId, userId, id, tenantId, wechatId, nickname, alias, avatar, gender, region, signature, bindQQ, bindEmail, bindMobile, createTime, currentDeviceId, isDeleted, deleteTime, groupId, memo, wechatVersion, lastUpdateTime, isOnline",
      weChatGroup:
        "serverId, userId, id, wechatAccountId, tenantId, accountId, chatroomId, chatroomOwner, conRemark, nickname, chatroomAvatar,wechatChatroomId, groupId, config, notice, selfDisplyName",
      contracts:
        "serverId, userId, id, wechatAccountId, wechatId, alias, conRemark, nickname, quanPin, avatar, gender, region, addFrom, phone, signature, accountId, extendFields, city, lastUpdateTime, isPassed, tenantId, groupId, thirdParty, additionalPicture, desc, config, lastMessageTime, duplicate",
      newContactList: "serverId, userId, id, groupName, contacts",
      messageList:
        "serverId, userId, id, dataType, wechatAccountId, tenantId, accountId, nickname, avatar, groupId, config, labels,  wechatId, alias, conRemark, quanPin, gender, region, addFrom, phone, signature, extendFields, city, lastUpdateTime, isPassed, thirdParty, additionalPicture, desc, lastMessageTime, duplicate, chatroomId, chatroomOwner, chatroomAvatar, notice, selfDisplyName",

      // 新增统一表
      // 会话表索引：支持按用户、类型、时间、置顶等查询
      chatSessions:
        "serverId, userId, id, type, wechatAccountId, [userId+type], [userId+wechatAccountId], [userId+lastUpdateTime], sortKey, nickname, conRemark, avatar, content, lastUpdateTime",

      // 联系人表索引：支持按用户、类型、标签、搜索等查询
      contactsUnified:
        "serverId, userId, id, type, wechatAccountId, [userId+type], [userId+wechatAccountId], sortKey, searchKey, nickname, conRemark, avatar, lastUpdateTime",

      // 联系人标签映射表索引：支持按用户、标签、联系人、类型查询
      contactLabelMap:
        "serverId, userId, labelId, contactId, contactType, [userId+labelId], [userId+contactId], [userId+labelId+sortKey], sortKey, searchKey, avatar, nickname, conRemark, unreadCount, lastUpdateTime",

      // 用户登录记录表索引：支持按用户ID、登录时间查询
      userLoginRecords:
        "serverId, userId, lastLoginTime, loginCount, createTime, lastActiveTime",
    });
  }
}

// 创建数据库实例
export const db = new CunkebaoDatabase();

// 简单的数据库操作类
export class DatabaseService<T> {
  constructor(private table: Table<T>) {}

  // 基础 CRUD 操作 - 使用serverId作为主键
  async create(data: Omit<T, "serverId">): Promise<string | number> {
    return await this.table.add(data as T);
  }

  // 创建数据（直接使用接口数据）
  // 接口数据的id字段直接作为serverId主键，原id字段保留
  async createWithServerId(data: any): Promise<string | number> {
    const dataToInsert = {
      ...data,
      serverId: data.id, // 使用接口的id作为serverId主键
    };
    return await this.table.add(dataToInsert as T);
  }

  // 根据原始ID查询（用户友好的查询方法）
  async findById(id: string | number): Promise<T | undefined> {
    return await this.table.where("id").equals(id).first();
  }

  // 根据serverId查询（内部主键查询）
  async findByPrimaryKey(serverId: string | number): Promise<T | undefined> {
    return await this.table.get(serverId);
  }

  async findAll(): Promise<T[]> {
    return await this.table.toArray();
  }

  async update(serverId: string | number, data: Partial<T>): Promise<number> {
    return await this.table.update(serverId, data as any);
  }

  async updateMany(
    dataList: { serverId: string | number; data: Partial<T> }[],
  ): Promise<number> {
    return await this.table.bulkUpdate(
      dataList.map(item => ({
        key: item.serverId,
        changes: item.data as any,
      })),
    );
  }

  async createMany(
    dataList: Omit<T, "serverId">[],
  ): Promise<(string | number)[]> {
    return await this.table.bulkAdd(dataList as T[], { allKeys: true });
  }

  // 批量创建数据（直接使用接口数据）
  // 接口数据的id字段直接作为serverId主键
  async createManyWithServerId(dataList: any[]): Promise<(string | number)[]> {
    // 检查是否存在重复的serverId
    const serverIds = dataList.map(item => item.id);
    const existingData = await this.table
      .where("serverId")
      .anyOf(serverIds)
      .toArray();
    const existingServerIds = new Set(
      existingData.map((item: any) => item.serverId),
    );

    // 过滤掉已存在的数据
    const newData = dataList.filter(item => !existingServerIds.has(item.id));

    if (newData.length === 0) {
      // console.log("所有数据都已存在，跳过插入");
      return [];
    }

    const processedData = newData.map(item => ({
      ...item,
      serverId: item.id, // 使用接口的id作为serverId主键
    }));

    return await this.table.bulkAdd(processedData as T[], { allKeys: true });
  }

  async delete(serverId: string | number): Promise<void> {
    await this.table.delete(serverId);
  }

  async clear(): Promise<void> {
    await this.table.clear();
  }

  // 条件查询
  async findWhere(field: keyof T, value: any): Promise<T[]> {
    return await this.table
      .where(field as string)
      .equals(value)
      .toArray();
  }

  // 根据服务器ID查询（兼容性方法）
  async findByServerId(serverId: any): Promise<T | undefined> {
    return await this.table.get(serverId);
  }

  // 根据原始ID批量查询
  async findByIds(ids: (string | number)[]): Promise<T[]> {
    return await this.table.where("id").anyOf(ids).toArray();
  }

  // 多值查询（IN 查询）
  async findWhereIn(field: keyof T, values: any[]): Promise<T[]> {
    return await this.table
      .where(field as string)
      .anyOf(values)
      .toArray();
  }

  // 范围查询
  async findWhereBetween(field: keyof T, min: any, max: any): Promise<T[]> {
    return await this.table
      .where(field as string)
      .between(min, max)
      .toArray();
  }

  // 模糊查询（以指定字符串开头）
  async findWhereStartsWith(field: keyof T, prefix: string): Promise<T[]> {
    return await this.table
      .where(field as string)
      .startsWith(prefix)
      .toArray();
  }

  // 不等于查询
  async findWhereNot(field: keyof T, value: any): Promise<T[]> {
    return await this.table
      .where(field as string)
      .notEqual(value)
      .toArray();
  }

  // 大于查询
  async findWhereGreaterThan(field: keyof T, value: any): Promise<T[]> {
    return await this.table
      .where(field as string)
      .above(value)
      .toArray();
  }

  // 小于查询
  async findWhereLessThan(field: keyof T, value: any): Promise<T[]> {
    return await this.table
      .where(field as string)
      .below(value)
      .toArray();
  }

  // 复合条件查询
  async findWhereMultiple(
    conditions: {
      field: keyof T;
      operator:
        | "equals"
        | "notEqual"
        | "above"
        | "below"
        | "aboveOrEqual"
        | "belowOrEqual"
        | "startsWith"
        | "anyOf"
        | "notIn"
        | "between"
        | "contains";
      value: any;
      value2?: any; // 用于 between 操作符
    }[],
  ): Promise<T[]> {
    let collection = this.table.toCollection();

    for (const condition of conditions) {
      const { field, operator, value, value2 } = condition;
      collection = collection.and(item => {
        const fieldValue = (item as any)[field];
        switch (operator) {
          case "equals":
            return fieldValue === value;
          case "notEqual":
            return fieldValue !== value;
          case "above":
            return fieldValue > value;
          case "below":
            return fieldValue < value;
          case "aboveOrEqual":
            return fieldValue >= value;
          case "belowOrEqual":
            return fieldValue <= value;
          case "startsWith":
            return (
              typeof fieldValue === "string" && fieldValue.startsWith(value)
            );
          case "contains":
            return typeof fieldValue === "string" && fieldValue.includes(value);
          case "anyOf":
            return Array.isArray(value) && value.includes(fieldValue);
          case "notIn":
            return Array.isArray(value) && !value.includes(fieldValue);
          case "between":
            return fieldValue >= value && fieldValue <= (value2 ?? value);
          default:
            return true;
        }
      });
    }

    return await collection.toArray();
  }

  // 分页查询
  async findWithPagination(
    page: number = 1,
    limit: number = 10,
  ): Promise<{ data: T[]; total: number; page: number; limit: number }> {
    const offset = (page - 1) * limit;
    const total = await this.table.count();
    const data = await this.table.offset(offset).limit(limit).toArray();

    return { data, total, page, limit };
  }

  // 排序查询
  async findAllSorted(
    field: keyof T,
    direction: "asc" | "desc" = "asc",
  ): Promise<T[]> {
    const collection = this.table.orderBy(field as string);
    return direction === "desc"
      ? await collection.reverse().toArray()
      : await collection.toArray();
  }

  // 统计
  async count(): Promise<number> {
    return await this.table.count();
  }

  // 条件统计
  async countWhere(field: keyof T, value: any): Promise<number> {
    return await this.table
      .where(field as string)
      .equals(value)
      .count();
  }
}

// 创建各表的服务实例
export const kfUserService = new DatabaseService(db.kfUsers);
export const weChatGroupService = new DatabaseService(db.weChatGroup);
export const contractService = new DatabaseService(db.contracts);
export const newContactListService = new DatabaseService(db.newContactList);
export const messageListService = new DatabaseService(db.messageList);

// 新增统一表服务
export const chatSessionService = new DatabaseService(db.chatSessions);
export const contactUnifiedService = new DatabaseService(db.contactsUnified);
export const contactLabelMapService = new DatabaseService(db.contactLabelMap);
export const userLoginRecordService = new DatabaseService(db.userLoginRecords);

// 默认导出数据库实例
export default db;