app/sheep/platform/pay.js

import sheep from '@/sheep';
// #ifdef H5
import $wxsdk from '@/sheep/libs/sdk-h5-weixin';
// #endif
import { getRootUrl } from '@/sheep/helper';

/**
 * 支付
 *
 * @param {String} payment = ['wechat','alipay','wallet']  	- 支付方式
 * @param {String} orderType = ['goods','recharge','groupon']  	- 订单类型
 * @param {String} orderSN					- 订单号
 */

export default class SheepPay {
  constructor(payment, orderType, orderSN) {
    this.payment = payment;
    this.orderSN = orderSN;
    this.orderType = orderType;
    this.payAction();
  }

  payAction() {
    const payAction = {
      WechatOfficialAccount: {
        wechat: () => {
          this.wechatOfficialAccountPay();
        },
        alipay: () => {
          this.redirectPay(); // 现在公众号可以直接跳转支付宝页面
        },
        money: () => {
          this.moneyPay();
        },
      },
      WechatMiniProgram: {
        wechat: () => {
          this.wechatMiniProgramPay();
        },
        alipay: () => {
          this.copyPayLink();
        },
        money: () => {
          this.moneyPay();
        },
      },
      App: {
        wechat: () => {
          this.wechatAppPay();
        },
        alipay: () => {
          this.alipay();
        },
        money: () => {
          this.moneyPay();
        },
      },
      H5: {
        wechat: () => {
          this.wechatWapPay();
        },
        alipay: () => {
          this.redirectPay();
        },
        money: () => {
          this.moneyPay();
        },
      },
    };
    return payAction[sheep.$platform.name][this.payment]();
  }

  // 预支付
  prepay() {
    return new Promise((resolve, reject) => {
      let data = {
        order_sn: this.orderSN,
        payment: this.payment,
      };
      if (uni.getStorageSync('openid')) {
        data.openid = uni.getStorageSync('openid');
      }
      sheep.$api.pay.prepay(data).then((res) => {
        res.error === 0 && resolve(res);
        if (res.error === -1 && res.msg === 'miss_openid') {
          uni.showModal({
            title: '微信支付',
            content: '请先绑定微信再使用微信支付',
            success: function (res) {
              if (res.confirm) {
                sheep.$platform.useProvider('wechat').bind();
              }
            },
          });
        }
      });
    });
  }
  // #ifdef H5
  // 微信公众号JSSDK支付
  async wechatOfficialAccountPay() {
    let that = this;
    let { error, data, msg } = await this.prepay();
    if (error !== 0) {
      console.log('支付错误', msg);
      return;
    }
    $wxsdk.wxpay(data.pay_data, {
      success: () => {
        that.payResult('success');
      },
      cancel: () => {
        sheep.$helper.toast('支付已手动取消');
      },
      fail: () => {
        that.payResult('fail');
      },
    });
  }

  //浏览器微信H5支付
  async wechatWapPay() {
    const { error, data } = await this.prepay();
    if (error === 0) {
      const redirect_url = `${getRootUrl()}pages/pay/result?orderSN=${this.orderSN}&payment=${
        this.payment
      }`;
      location.href = `${data.pay_data.h5_url}&redirect_url=${encodeURIComponent(redirect_url)}`;
    }
  }

  // 支付链接
  async redirectPay() {
    let { error, data } = await this.prepay();
    if (error === 0) {
      const redirect_url = `${getRootUrl()}pages/pay/result?orderSN=${this.orderSN}&payment=${
        this.payment
      }`;
      location.href = data.pay_data + encodeURIComponent(redirect_url);
    }
  }

  // #endif

  // 微信小程序支付
  async wechatMiniProgramPay() {
    let that = this;
    let result = await this.prepay();
    uni.requestPayment({
      provider: 'wxpay',
      ...result.data.pay_data,
      success: (res) => {
        that.payResult('success');
      },
      fail: (err) => {
        if (err.errMsg === 'requestPayment:fail cancel') {
          sheep.$helper.toast('支付已手动取消');
        } else {
          that.payResult('fail');
        }
      },
    });
  }

  // 余额支付
  async moneyPay() {
    const { error } = await this.prepay();
    error === 0 && this.payResult('success');
  }

  // 支付宝复制链接支付
  async copyPayLink() {
    let that = this;
    let { error, data } = await this.prepay();
    if (error === 0) {
      // 引入showModal 点击确认 复制链接；
      uni.showModal({
        title: '支付宝支付',
        content: '复制链接到外部浏览器',
        confirmText: '复制链接',
        success: (res) => {
          if (res.confirm) {
            sheep.$helper.copyText(data.pay_data);
          }
        },
      });
    }
  }

  // 支付宝支付
  async alipay() {
    let that = this;
    const { error, data } = await this.prepay();
    if (error === 0) {
      uni.requestPayment({
        provider: 'alipay',
        orderInfo: data.pay_data, //支付宝订单数据
        success: (res) => {
          that.payResult('success');
        },
        fail: (err) => {
          if (err.errMsg === 'requestPayment:fail [paymentAlipay:62001]user cancel') {
            sheep.$helper.toast('支付已手动取消');
          } else {
            that.payResult('fail');
          }
        },
      });
    }
  }

  // 微信支付
  async wechatAppPay() {
    let that = this;
    let { error, data } = await this.prepay();
    if (error === 0) {
      uni.requestPayment({
        provider: 'wxpay',
        orderInfo: data.pay_data, //微信订单数据(官方说是string。实测为object)
        success: (res) => {
          that.payResult('success');
        },
        fail: (err) => {
          err.errMsg !== 'requestPayment:fail cancel' && that.payResult('fail');
        },
      });
    }
  }

  // 支付结果跳转,success:成功，fail:失败
  payResult(resultType) {
    sheep.$router.redirect('/pages/pay/result', {
      orderSN: this.orderSN,
      payment: this.payment, //重新支付的时候使用
      payState: resultType,
      orderType: this.orderType,
    });
  }
}