"use strict";

import mongoose from "mongoose";

/**
 * 医院Schema定义
 *
 * 包含5个主要分类块：基本信息、位置信息、联系方式、服务信息和元数据。
 * 用于记录和管理医院信息，支持陪诊服务的医院选择功能。
 */
const HospitalSchema = mongoose.Schema(
  {
    // 基本信息 - 医院的核心标识信息
    basic: {
      name: { type: String, required: true, comment: "医院名称" },
      shortName: { type: String, default: "", comment: "医院简称" },
      pinyin: { type: String, default: "", comment: "医院名称拼音，用于搜索" },
      pinyinFL: { type: String, default: "", comment: "医院名称拼音首字母，用于搜索" },
      level: {
        type: String,
        enum: ["tertiary", "secondary", "primary", "other"],
        default: "other",
        comment: "医院等级：三级、二级、一级、其他",
      },
      type: {
        type: String,
        enum: ["general", "specialized", "traditional_chinese", "integrated", "other"],
        default: "general",
        comment: "医院类型：综合医院、专科医院、中医医院、中西医结合医院、其他",
      },
      description: { type: String, default: "", comment: "医院简介" },
      logo: { type: String, default: "", comment: "医院Logo地址" },
    },

    // 位置信息 - 医院的地理位置
    location: {
      province: { type: String, default: "", comment: "省份" },
      city: { type: String, default: "", comment: "城市" },
      district: { type: String, default: "", comment: "区县" },
      address: { type: String, default: "", comment: "详细地址" },
      longitude: { type: Number, default: 0, comment: "经度" },
      latitude: { type: Number, default: 0, comment: "纬度" },
    },

    // 联系方式 - 医院的联系信息
    contact: {
      phone: { type: String, default: "", comment: "联系电话" },
      emergencyPhone: { type: String, default: "", comment: "急诊电话" },
      website: { type: String, default: "", comment: "官方网站" },
      email: { type: String, default: "", comment: "电子邮箱" },
    },

    // 服务信息 - 医院提供的服务
    service: {
      features: [{ type: String, comment: "特色服务" }],
      isEnabled: { type: Boolean, default: true, comment: "是否启用" },
      sortOrder: { type: Number, default: 0, comment: "排序优先级" },
    },

    // 科室信息 - 医院科室详细信息
    departments: [
      {
        name: { type: String, required: true, comment: "科室名称" },
        pinyin: { type: String, default: "", comment: "科室名称拼音" },
        pinyinFL: { type: String, default: "", comment: "科室名称拼音首字母" },
        location: { type: String, default: "", comment: "科室位置（几号楼，几层）" },
        phone: { type: String, default: "", comment: "科室联系电话" },
        description: { type: String, default: "", comment: "科室简介" },
        doctors: [
          {
            name: { type: String, required: true, comment: "医生姓名" },
            title: {
              type: String,
              enum: ["resident", "attending", "deputy_chief", "chief", "other"],
              default: "attending",
              comment: "医生职称：住院医师、主治医师、副主任医师、主任医师、其他",
            },
            specialty: { type: String, default: "", comment: "专业擅长" },
            avatar: { type: String, default: "", comment: "医生头像" },
          },
        ],
        isEnabled: { type: Boolean, default: true, comment: "是否启用" },
        sortOrder: { type: Number, default: 0, comment: "排序优先级" },
      },
    ],

    // 元数据 - 系统管理信息
    meta: {
      createtime: { type: Date, default: Date.now, comment: "创建时间" },
      updatetime: { type: Date, default: Date.now, comment: "更新时间" },
    },
  },
  {
    minimize: false,
    strict: false,
    collection: "hospital",
    timestamps: false,
  }
);

/**
 * 根据名称查找医院
 *
 * @param {String} name - 医院名称（支持模糊搜索）
 * @param {Object} options - 查询选项 { page, pageSize }
 * @param {Function} cb - 可选的回调函数
 * @returns {Promise<Array>} 医院列表
 */
HospitalSchema.statics.findByName = async function (name, options = {}, cb) {
  const { page = 1, pageSize = 20 } = options;
  const filter = {
    $or: [
      { "basic.name": new RegExp(name, "i") },
      { "basic.shortName": new RegExp(name, "i") },
      { "basic.pinyin": new RegExp(name.toLowerCase(), "i") },
      { "basic.pinyinFL": new RegExp(name.toUpperCase(), "i") },
    ],
    "service.isEnabled": true,
  };
  const skip = (page - 1) * pageSize;
  return await this.find(filter)
    .sort({ "service.sortOrder": 1, "basic.name": 1 })
    .skip(skip)
    .limit(pageSize)
    .exec(cb);
};

/**
 * 根据城市查找医院
 *
 * @param {String} city - 城市名称
 * @param {Object} options - 查询选项 { page, pageSize, level, type }
 * @param {Function} cb - 可选的回调函数
 * @returns {Promise<Array>} 医院列表
 */
HospitalSchema.statics.findByCity = async function (city, options = {}, cb) {
  const { page = 1, pageSize = 20, level, type } = options;
  const filter = {
    "location.city": city,
    "service.isEnabled": true,
  };
  if (level) {
    filter["basic.level"] = level;
  }
  if (type) {
    filter["basic.type"] = type;
  }
  const skip = (page - 1) * pageSize;
  return await this.find(filter)
    .sort({ "service.sortOrder": 1, "basic.name": 1 })
    .skip(skip)
    .limit(pageSize)
    .exec(cb);
};

/**
 * 获取所有启用的医院列表（用于选择器）
 *
 * @param {Object} options - 查询选项 { city, level, type }
 * @param {Function} cb - 可选的回调函数
 * @returns {Promise<Array>} 医院列表（仅包含名称和ID）
 */
HospitalSchema.statics.getHospitalSelector = async function (options = {}, cb) {
  const { city, level, type } = options;
  const filter = { "service.isEnabled": true };
  if (city) {
    filter["location.city"] = city;
  }
  if (level) {
    filter["basic.level"] = level;
  }
  if (type) {
    filter["basic.type"] = type;
  }
  return await this.find(filter, { "basic.name": 1 })
    .sort({ "service.sortOrder": 1, "basic.name": 1 })
    .exec(cb);
};

/**
 * 创建医院
 *
 * @param {Object} hospital - 医院对象
 * @param {Function} cb - 可选的回调函数
 * @returns {Promise<Object>} 创建的医院
 */
HospitalSchema.statics.createHospital = async function (hospital, cb) {
  hospital.meta = {
    createtime: Date.now(),
    updatetime: Date.now(),
  };
  const newHospital = new this(hospital);
  return await newHospital.save(cb);
};

/**
 * 更新医院信息
 *
 * @param {ObjectId} id - 医院ID
 * @param {Object} update - 要更新的字段
 * @param {Function} cb - 可选的回调函数
 * @returns {Promise<Object|null>} 更新后的医院
 */
HospitalSchema.statics.updateHospital = async function (id, update, cb) {
  try {
    update["meta.updatetime"] = Date.now();
    return await this.findByIdAndUpdate(id, { $set: update }, { new: true }, cb);
  } catch (error) {
    return null;
  }
};

/**
 * 启用/禁用医院
 *
 * @param {ObjectId} id - 医院ID
 * @param {Boolean} isEnabled - 是否启用
 * @param {Function} cb - 可选的回调函数
 * @returns {Promise<Object|null>} 更新后的医院
 */
HospitalSchema.statics.setHospitalStatus = async function (id, isEnabled, cb) {
  try {
    return await this.findByIdAndUpdate(
      id,
      {
        "service.isEnabled": isEnabled,
        "meta.updatetime": Date.now(),
      },
      { new: true },
      cb
    );
  } catch (error) {
    return null;
  }
};

// 医院名称索引
HospitalSchema.index({ "basic.name": 1 });

// 城市和等级索引
HospitalSchema.index({ "location.city": 1, "basic.level": 1 });

// 启用状态索引
HospitalSchema.index({ "service.isEnabled": 1 });

export { HospitalSchema };