import React, { Component } from 'react';
import './index.less';
import { Modal, Icon, Button, Tooltip } from 'antd';
import Assets from '@src/components/Assets';
import { asyncSMessage } from '@src/services/AsyncTools';
import { Icon as GIcon } from '../Icon';
import { Button as GButton } from '../Button';
import { User } from '../../stores/user';
import { Common } from '../../stores/common';
import { MobileArea, WechatUserAppId } from '../../../Constant';

const LOGIN_PHONE = 'LOGIN_PHONE';
const LOGIN_WX = 'LOGIN_WX';
const BIND_PHONE = 'BIND_PHONE';
const BIND_WX = 'BIND_WX';
const BIND_WX_ERROR = 'BIND_WX_ERROR';

export default class Login extends Component {
  constructor(props) {
    super(props);
    this.validNumber = 0;
    this.state = { type: LOGIN_WX, data: { area: MobileArea[0].value } };
    window.addEventListener(
      'message',
      event => {
        if (typeof event.data === 'string' && event.data.indexOf('code:') === 0) {
          const code = event.data.split(':')[1];
          if (this.state.type === LOGIN_WX) {
            this.scanLogin(code);
          } else if (this.state.type === BIND_WX) {
            this.scanBind(code);
          }
        }
      },
      false,
    );
  }

  close() {
    User.closeLogin();
  }

  login() {
    const { data, needEmail, mobileError, validError } = this.state;
    const { area, mobile, mobileVerifyCode, email } = data;
    if (mobileError || validError) return;
    if (!area || !mobile || !mobileVerifyCode) return;
    if (needEmail && !email) return;
    User.login(area, mobile, mobileVerifyCode, email)
      .then((result) => {
        if (result.bindWechat) {
          this.close();
        } else {
          this.setState({ type: BIND_WX });
        }
      })
      .catch(err => {
        if (err.message.indexOf('验证码') >= 0) {
          this.setState({ validError: err.message });
        } else {
          this.setState({ mobileError: err.message });
        }
      });
  }

  bind() {
    const { data, needEmail, mobileError, validError } = this.state;
    const { area, mobile, mobileVerifyCode, email } = data;
    if (mobileError || validError) return;
    if (!area || !mobile || !mobileVerifyCode) return;
    if (needEmail && !email) return;
    User.bind(area, mobile, mobileVerifyCode, email)
      .then(() => {
        this.close();
      })
      .catch(err => {
        if (err.message.indexOf('验证码') >= 0) {
          this.setState({ validError: err.message });
        } else {
          this.setState({ mobileError: err.message });
        }
      });
  }

  scanLogin(code) {
    User.loginWechat(code).then(result => {
      if (result.bindMobile) {
        this.close();
      } else {
        this.setState({ type: BIND_PHONE });
      }
    });
  }

  scanBind(code) {
    User.loginWechat(code)
      .then(() => {
        this.close();
      })
      .catch(err => {
        this.setState({ type: BIND_WX_ERROR, wechatError: err.message });
      });
  }

  changeData(field, value) {
    let { data } = this.state;
    data = data || {};
    data[field] = value;
    this.setState({ data });
  }

  validMobile(login) {
    const { data } = this.state;
    const { area, mobile } = data;
    if (!area || !mobile) return;
    this.validNumber += 1;
    const number = this.validNumber;
    User.validWechat(area, mobile)
      .then(result => {
        if (result) {
          this.setState({ mobileError: '' });
          return User.validMobile(area, mobile).then(r => {
            if (number !== this.validNumber) return;
            this.setState({ needEmail: r });
          });
        }
        this.setState({ needEmail: false });
        return login ? Promise.resolve() : Promise.reject(new Error('该手机已绑定其他账号，请更换手机号码'));
      })
      .catch(err => {
        this.setState({ mobileError: err.message });
      });
  }

  sendValid() {
    const { data, mobileError } = this.state;
    const { area, mobile } = data;
    if (!area || !mobile || mobileError) return Promise.reject();
    return Common.sendSms(area, mobile)
      .then(result => {
        if (result) {
          asyncSMessage('发送成功');
          this.setState({ mobileError: '', validError: '' });
        } else {
          throw new Error('发送失败');
        }
      })
      .catch(err => {
        this.setState({ mobileError: err.message });
        throw err;
      });
  }

  render() {
    const { type } = this.state;
    const { user } = this.props;
    return (
      <Modal ref={(ref) => { this.modalR = ref; }} wrapClassName={`login-modal ${type}`} visible={user.needLogin} footer={null} closable={false} width={470}>
        {this.renderBody(type)}
        <GIcon
          name="close"
          onClick={() => {
            this.close();
          }}
        />
      </Modal>
    );
  }

  renderBody(type) {
    switch (type) {
      case LOGIN_WX:
        return this.renderLoginWx();
      case BIND_PHONE:
        return this.renderBindPhone();
      case BIND_WX:
        return this.renderBindWx();
      case BIND_WX_ERROR:
        return this.renderBindWxError();
      case LOGIN_PHONE:
      default:
        return this.renderLoginPhone();
    }
  }

  renderLoginPhone() {
    const { needEmail } = this.state;
    return (
      <div className="body">
        <div className="title">手机号登录</div>
        <div className="tip" hidden={!needEmail}>
          <Assets name="notice" />
          该手机号尚未注册，将自动为您注册账户
        </div>
        <SelectInput
          placeholder="请输入手机号"
          selectValue={this.state.data.area}
          select={MobileArea}
          value={this.state.data.mobile}
          error={this.state.mobileError}
          onSelect={value => {
            this.changeData('area', value);
            this.validMobile(true);
          }}
          onChange={e => {
            this.changeData('mobile', e.target.value);
            this.validMobile(true);
          }}
        />
        <VerificationInput
          placeholder="请输入验证码"
          value={this.state.data.mobileVerifyCode}
          error={this.state.validError}
          onSend={() => {
            return this.sendValid();
          }}
          onChange={e => {
            this.changeData('mobileVerifyCode', e.target.value);
          }}
        />
        {needEmail && (
          <Input
            placeholder="请输入邮箱"
            value={this.state.data.email}
            onChange={e => {
              this.changeData('email', e.target.value);
            }}
          />
        )}
        <Button
          type="primary"
          size="large"
          block
          onClick={() => {
            this.login();
          }}
        >
          登录
        </Button>
        <Tooltip overlayClassName="gray" placement="left" title="微信扫码登录">
          <a
            className="other"
            onClick={() => {
              this.setState({ type: LOGIN_WX });
            }}
          >
            <Assets name="code" />
          </a>
        </Tooltip>
      </div>
    );
  }

  renderLoginWx() {
    return (
      <div className="body">
        <div className="title">微信扫码登录</div>
        <div className="qr-code">
          <iframe frameBorder="0" src={`/login.html?appid=${WechatUserAppId}&redirectUri=${encodeURIComponent('http://www.duoshaojiaoyu.com')}`} width="300" height="300" />
          <div className="text">请使用微信扫描二维码登录</div>
        </div>
        <Tooltip overlayClassName="gray" placement="left" title="手机号登录">
          <a
            className="other"
            onClick={() => {
              this.setState({ type: LOGIN_PHONE });
            }}
          >
            <Assets name="phone" />
          </a>
        </Tooltip>
      </div>
    );
  }

  renderBindPhone() {
    const { needEmail } = this.state;
    return (
      <div className="body">
        <div className="title">绑定手机号</div>
        <div className="tip">
          <Assets name="notice" />
          微信登录成功！为更好的使用服务，请您绑定手机号和邮箱。
        </div>
        <SelectInput
          placeholder="请输入手机号"
          selectValue={this.state.data.area}
          select={MobileArea}
          value={this.state.data.mobile}
          error={this.state.mobileError}
          onSelect={value => {
            this.changeData('area', value);
            this.validMobile(false);
          }}
          onChange={e => {
            this.changeData('mobile', e.target.value);
            this.validMobile(false);
          }}
        />
        <VerificationInput
          placeholder="请输入验证码"
          value={this.state.data.mobileVerifyCode}
          error={this.state.validError}
          onSend={() => {
            return this.sendValid();
          }}
          onChange={e => {
            this.changeData('mobileVerifyCode', e.target.value);
          }}
        />
        {needEmail && (
          <Input
            placeholder="请输入邮箱"
            value={this.state.data.email}
            onChange={e => {
              this.changeData('email', e.target.value);
            }}
          />
        )}
        <Button
          type="primary"
          size="large"
          block
          onClick={() => {
            this.bind();
          }}
        >
          绑定
        </Button>
      </div>
    );
  }

  renderBindWx() {
    return (
      <div className="body">
        <div className="title">绑定微信号</div>
        <div className="tip">
          <Assets name="notice" />
          手机号注册成功！为更好的使用服务，建议您绑定微信号。
        </div>
        <div className="qr-code">
          <iframe frameBorder="0" src={`/login.html?appid=${WechatUserAppId}&redirectUri=${encodeURIComponent('http://www.duoshaojiaoyu.com')}`} width="300" height="300" />
          <div className="text">请使用微信扫描二维码登录</div>
          <div
            className="jump"
            onClick={() => {
              this.close();
            }}
          >
            跳过
          </div>
        </div>
      </div>
    );
  }

  renderBindWxError() {
    return (
      <div className="body">
        <div className="title">绑定失败</div>
        <div className="text">该微信账户已绑定其他手机号，您可直接使用微信登入。</div>
        <div className="btn">
          <GButton
            radius
            onClick={() => {
              this.close();
            }}
          >
            Ok
          </GButton>
        </div>
      </div>
    );
  }
}

class Input extends Component {
  render() {
    const { className = '', onChange, placeholder, value, error, left, right } = this.props;
    return (
      <div className={`g-input-container ${className}`}>
        <div className={`g-input-wrapper ${error ? 'error' : ''}`}>
          {left && <div className="g-input-left">{left}</div>}
          <input
            className="g-input"
            placeholder={placeholder}
            value={value}
            onChange={data => onChange && onChange(data)}
          />
          {right && <div className="g-input-right">{right}</div>}
        </div>
        <div hidden={!error} className="g-input-error">
          {error}
        </div>
      </div>
    );
  }
}

class SelectInput extends Component {
  constructor(props) {
    super(props);
    this.state = { showSelect: false };
  }

  render() {
    const { showSelect } = this.state;
    const { className = '', onChange, placeholder, value, error, selectValue, select, onSelect } = this.props;
    return (
      <Input
        className={className}
        left={
          <span className="g-input-left-select" onClick={() => this.setState({ showSelect: !showSelect })}>
            {selectValue}
            <Icon type={showSelect ? 'up' : 'down'} />
            {showSelect && (
              <ul className="select-list">
                {select.map(row => {
                  return (
                    <li
                      onClick={() => {
                        this.setState({ showSelect: false });
                        if (onSelect) onSelect(row.value);
                      }}
                    >
                      {row.label}
                    </li>
                  );
                })}
              </ul>
            )}
          </span>
        }
        value={value}
        placeholder={placeholder}
        onChange={data => onChange && onChange(data)}
        error={error}
      />
    );
  }
}

export class VerificationInput extends Component {
  constructor(props) {
    super(props);
    this.timeKey = null;
    this.state = { loading: 0 };
  }

  componentWillUnmount() {
    if (this.timeKey) clearTimeout(this.timeKey);
  }

  onSend() {
    const { onSend, time = 60 } = this.props;
    if (onSend) {
      onSend().then(() => {
        this.setTime(time);
      });
    }
  }

  setTime(time) {
    this.setState({ loading: time });
    this.timeKey = setTimeout(() => {
      this.setTime(time - 1);
    }, 1000);
  }

  render() {
    const { loading } = this.state;
    const { className = '', onChange, placeholder, value } = this.props;
    return (
      <Input
        className={className}
        right={
          loading <= 0 ? (
            <span className="g-input-right-verification" onClick={() => this.onSend()}>
              获取验证码
            </span>
          ) : (
            <span className="g-input-right-verification-loading">等待{loading}秒</span>
          )
        }
        value={value}
        placeholder={placeholder}
        onChange={data => onChange && onChange(data)}
      />
    );
  }
}