'use strict';
const shopController = require('./shop.js');
// 购物车控制器
module.exports = class CartController extends shopController {
  /**
   * [useModel 使用模型]
   * @return {[type]} [description]
   */
  get useModel() {
    const that = this;
    return that.app.model.Carts;
  }

  /**
   * [createValidate 商品加入购物车]
   * @return {[type]} [description]
   */
  get createValidate() {
    const that = this;
    return {
      product_id: that.ctx.rules.name('商品ID')
        .required()
        .number(),
      category_id: that.ctx.rules.name('商品分类ID')
        .required()
        .number(),
      pid: that.ctx.rules.name('商品分类父级ID')
        .required()
        .number(),
      user_id: that.ctx.rules.default(that.service.shop.getWebUserId())
        .number(),
      product_count: that.ctx.rules.default(1)
        .number(),
      is_select: that.ctx.rules.default(1)
        .number(),
      create_time: that.ctx.rules.default(that.app.szjcomo.date('Y-m-d H:i:s'))
        .required(),
    };
  }

  /**
   * [updateValidate 更新购物车]
   * @return {[type]} [description]
   */
  get updateValidate() {
    const that = this;
    return {
      data: that.ctx.rules.name('购物车数据')
        .required()
        .is_array(),
      user_id: that.ctx.rules.default(that.service.shop.getWebUserId())
        .number(),
      update_time: that.ctx.rules.default(that.app.szjcomo.date('Y-m-d H:i:s'))
        .required(),
    };
  }

  /**
   * [deleteValidate 删除购物车商品]
   * @return {[type]} [description]
   */
  get deleteValidate() {
    const that = this;
    return {
      product_id: that.ctx.rules.name('商品ID')
        .required()
        .number(),
      user_id: that.ctx.rules.default(that.service.shop.getWebUserId())
        .number(),
    };
  }

  /**
   * [selectValidate 查询购物车商品]
   * @return {[type]} [description]
   */
  get selectValidate() {
    const that = this;
    return {
      user_id: that.ctx.rules.default(that.service.shop.getWebUserId())
        .number(),
      is_select: that.ctx.rules.default(0)
        .number(),
      pid: that.ctx.rules.name('商品分类父级ID')
        .default(4)
        .required()
        .number(),
    };
  }

  /**
   * [cartTotalValidate 获取购物车商品件数]
   * @return {[type]} [description]
   */
  get cartTotalValidate() {
    const that = this;
    return {
      user_id: that.ctx.rules.default(0)
        .number(),
      pid: that.ctx.rules.name('商品分类父级ID')
        .default(4)
        .required()
        .number(),
    };
  }


  /**
   * [create 添加购物车]
   * @return {[type]} [description]
   */
  async create() {
    const that = this;
    try {
      const data = await that.ctx.validate(that.createValidate, await that.ctx.postParse());
      const info = await that.useModel.findOne({
        where: { user_id: data.user_id, product_id: data.product_id, volume: data.volume, price: data.price },
        attributes: [ 'product_count', 'cart_id' ],
        raw: true,
      });
      if (!info) {
        // 2023/2/27 加入购物车 补充产品信息
        const res = await that.app.model.Products.findOne({
          where: { product_id: data.product_id },
          attributes: [ 'category_id', 'dinning_coin_amount', 'dining_partner_id' ],
        });
        data.category_id = res.category_id;
        data.dinning_coin_amount = res.dinning_coin_amount;
        data.dining_partner_id = res.dining_partner_id;
        const createBean = await that.app.comoBean.instance(data);
        const result = await that.service.base.create(createBean, that.useModel, '购物车商品添加失败,请重试');
        return that.ctx.appJson(that.app.szjcomo.appResult('SUCCESS', result, false));
      }
      const updateBean = await that.app.comoBean.instance({
        product_count: info.product_count + data.product_count, is_select: 1,
        update_time: that.app.szjcomo.date('Y-m-d H:i:s'),
      }, { where: { cart_id: info.cart_id } });
      const result = await that.service.base.update(updateBean, that.useModel, '加入购物车失败,请稍候重试');
      return that.ctx.appJson(that.app.szjcomo.appResult('SUCCESS', result, false));
    } catch (err) {
      return that.ctx.appJson(that.app.szjcomo.appResult(err.message));
    }
  }

  /**
   * [update 更新购物车]
   * @return {[type]} [description]
   */
  async update() {
    const that = this;
    let transaction;
    try {
      const data = await that.ctx.validate(that.updateValidate, await that.ctx.anyParse());
      transaction = await that.app.model.transaction();
      for (let i = 0; i < data.data.length; i++) {
        const item = data.data[i];
        const updateBean = await that.app.comoBean.instance({
          product_count: Number(item.product_count),
          is_select: Number(item.is_select),
          random_key: that.app.szjcomo.mt_rand(10000, 99999),
          update_time: that.app.szjcomo.date('Y-m-d H:i:s'),
        }, { where: { user_id: data.user_id, product_id: item.product_id, volume: item.volume }, transaction });
        await that.service.base.update(updateBean, that.useModel, '更新购物车失败,请重试');
      }
      await transaction.commit();
      return that.ctx.appJson(that.app.szjcomo.appResult('SUCCESS', true, false));
    } catch (err) {
      if (transaction) await transaction.rollback();
      return that.ctx.appJson(that.app.szjcomo.appResult(err.message));
    }
  }

  /**
   * [delete 删除购物车商品]
   * @return {[type]} [description]
   */
  async delete() {
    const that = this;
    try {
      const data = await that.ctx.validate(that.deleteValidate, await that.ctx.anyParse());
      const deleteBean = await that.app.comoBean.instance(data, {
        where: {
          user_id: data.user_id, product_id: data.product_id, volume: data.volume,
        },
      });
      const result = await that.service.base.delete(deleteBean, that.useModel, '删除购物车商品失败,请稍候重试');
      return that.ctx.appJson(that.app.szjcomo.appResult('SUCCESS', result, false));
    } catch (err) {
      return that.ctx.appJson(that.app.szjcomo.appResult(err.message));
    }
  }

  /**
   * [select 查询购物车商品]
   * @return {[type]} [description]
   */
  async select() {
    const that = this;
    try {
      const data = await that.ctx.validate(that.selectValidate, await that.ctx.getParse());
      const seq = that.app.Sequelize;
      const options = {
        where: { user_id: data.user_id, pid: data.pid },
        include: [
          { model: that.app.model.Products, as: 'products', attributes: [] },
        ],
        attributes: [
          [ seq.col('products.product_name'), 'product_name' ],
          [ seq.col('products.product_image'), 'product_image' ],
          [ seq.col('products.shop_price'), 'shop_price' ],
          [ seq.col('products.market_price'), 'market_price' ],
          'product_id', 'product_count', 'is_select', 'category_id', 'volume', 'price', 'cart_id', 'pid',
        ],
      };
      if (data.is_select) options.where.is_select = 1;
      const selectBean = await that.app.comoBean.instance(data, options);
      const result = await that.service.base.select(selectBean, that.useModel, '查询购物车商品列表失败,请稍候重试', true);
      return that.ctx.appJson(that.app.szjcomo.appResult('SUCCESS', result, false));
    } catch (err) {
      return that.ctx.appJson(that.app.szjcomo.appResult(err.message));
    }
  }

  /**
   * [cartTotal 获取购物车商品数量]
   * @return {[type]} [description]
   */
  async cartTotal() {
    const that = this;
    try {
      const data = await that.ctx.validate(that.cartTotalValidate, await that.ctx.getParse());
      if (that.ctx.request.header.weblogintoken) {
        data.user_id = await that.service.shop.getWebUserId();
        const total = await that.useModel.count({ where: { user_id: data.user_id, pid: data.pid } });
        return that.ctx.appJson(that.app.szjcomo.appResult('SUCCESS', total, false));
      }
      return that.ctx.appJson(that.app.szjcomo.appResult('SUCCESS', 0, false));

    } catch (err) {
      return that.ctx.appJson(that.app.szjcomo.appResult(err.message));
    }
  }

};