<template>
  <div class="main">
    <a-form id="formLogin" class="user-layout-login" ref="formLogin" :form="form" @submit="handleSubmit">
      <a-tabs
        :activeKey="customActiveKey"
        :tabBarStyle="{ textAlign: 'center', borderBottom: 'unset' }"
        @change="handleTabClick"
      >
        <a-tab-pane key="tab1" tab="账号密码登录">
          <a-alert
            v-if="isLoginError"
            type="error"
            showIcon
            style="margin-bottom: 24px;"
            :message="this.accountLoginErrMsg"
          />

          <a-form-item>
            <a-input
              size="large"
              type="text"
              placeholder="账号"
              v-decorator="[
                'account',
                {
                  initialValue: '',
                  rules: [{ required: true, message: '请输入账号' }, { validator: handleUsernameOrEmail }],
                  validateTrigger: 'change'
                }
              ]"
            >
              <a-icon slot="prefix" type="user" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>

          <a-form-item>
            <a-input
              size="large"
              type="password"
              autocomplete="false"
              placeholder="密码"
              v-decorator="[
                'password',
                { initialValue: '', rules: [{ required: true, message: '请输入密码' }], validateTrigger: 'blur' }
              ]"
            >
              <a-icon slot="prefix" type="lock" :style="{ color: 'rgba(0,0,0,.25)' }" />
            </a-input>
          </a-form-item>
        </a-tab-pane>
      </a-tabs>
      <a-form-item>
        <a-checkbox v-decorator="['rememberMe', { valuePropName: 'checked' }]">记住我</a-checkbox>
      </a-form-item>

      <a-form-item style="margin-top:24px">
        <a-button
          size="large"
          type="primary"
          htmlType="submit"
          class="login-button"
          :loading="state.loginBtn"
          :disabled="state.loginBtn"
        >确定</a-button
        >
      </a-form-item>
    </a-form>
  </div>
</template>

<script>
import Vue from 'vue'
import { mapActions } from 'vuex'
import { getSmsCaptcha, getCaptchaOpen } from '@/api/modular/system/loginManage'

export default {
  data() {
    return {
      customActiveKey: 'tab1',
      loginBtn: false,
      // login type: 0 email, 1 username, 2 telephone
      loginType: 0,
      isLoginError: false,
      requiredTwoStepCaptcha: false,
      stepCaptchaVisible: false,
      form: this.$form.createForm(this),
      state: {
        time: 60,
        loginBtn: false,
        // login type: 0 email, 1 username, 2 telephone
        loginType: 0,
        smsSendBtn: false
      },
      accountLoginErrMsg: '',
      tenantOpen: false,
      captchaOpen: false, // 是否开启验证码
      tenantsList: [],
      loginParams: [] // 登录参数
    }
  },
  mounted() {
    this.getLocalStorageData()
  },
  methods: {
    ...mapActions(['Login', 'Logout', 'dictTypeData']),
    /**
     * 获取验证码开关
     */
    getCaptchaOpen() {
      getCaptchaOpen().then(res => {
        if (res.code === 0) {
          // this.captchaOpen = res.data
          this.captchaOpen = false
        }
      })
    },
    // handler
    handleUsernameOrEmail(rule, value, callback) {
      const { state } = this
      const regex = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((\.[a-zA-Z0-9_-]{2,3}){1,2})$/
      if (regex.test(value)) {
        state.loginType = 0
      } else {
        state.loginType = 1
      }
      callback()
    },
    handleTabClick(key) {
      this.isLoginError = false
      this.customActiveKey = key
      // this.form.resetFields()
    },
    handleSubmit(e) {
      e.preventDefault()
      const {
        form: { validateFields },
        state,
        customActiveKey,
        Login
      } = this

      state.loginBtn = true
      const validateFieldsKey = customActiveKey === 'tab1' ? ['account', 'password'] : ['mobile', 'captcha']
      if (this.tenantOpen) {
        validateFieldsKey.push('tenantCode')
      }
      validateFields(validateFieldsKey, { force: true }, (err, values) => {
        this.loginParams = values
        if (!err) {
          // 是否开启验证码
          if (this.captchaOpen) {
            this.$refs.verify.show()
            state.loginBtn = false
            return
          }
          const loginParams = { ...values }
          delete loginParams.account
          loginParams[!state.loginType ? 'account' : 'account'] = values.account
          loginParams.password = values.password

          if (this.tenantOpen) {
            loginParams.tenantCode = values.tenantCode
          }
          Login(loginParams)
            .then(res => this.loginSuccess(res))
            .catch(err => this.requestFailed(JSON.stringify(err)))
            .finally(() => {
              state.loginBtn = false
            })
        } else {
          setTimeout(() => {
            state.loginBtn = false
          }, 600)
        }
      })
    },
    /**
     * 获取验证码
     */
    verifySuccess(params) {
      this.loginParams.code = params.captchaVerification
      this.Login(this.loginParams)
        .then(res => this.loginSuccess(res))
        .catch(err => this.requestFailed(JSON.stringify(err)))
        .finally(() => {
          this.state.loginBtn = false
        })
    },
    getCaptcha(e) {
      e.preventDefault()
      const {
        form: { validateFields },
        state
      } = this

      validateFields(['mobile'], { force: true }, (err, values) => {
        if (!err) {
          state.smsSendBtn = true

          const interval = window.setInterval(() => {
            if (state.time-- <= 0) {
              state.time = 60
              state.smsSendBtn = false
              window.clearInterval(interval)
            }
          }, 1000)

          const hide = this.$message.loading('验证码发送中..', 0)
          getSmsCaptcha({ phone: values.mobile })
            .then(res => {
              setTimeout(hide, 2500)
              this.$message.success('验证码发送成功')
            })
            .catch(err => {
              setTimeout(hide, 1)
              clearInterval(interval)
              state.time = 60
              state.smsSendBtn = false
              this.requestFailed(err)
            })
        }
      })
    },
    stepCaptchaSuccess() {
      this.loginSuccess()
    },
    stepCaptchaCancel() {
      this.Logout().then(() => {
        this.loginBtn = false
        this.stepCaptchaVisible = false
      })
    },
    loginSuccess(res) {
      this.setLocalStorageData()
      this.$router.push({ path: '/' })
      this.isLoginError = false
      // 加载字典所有字典到缓存中
      this.dictTypeData().then(res => {})
    },
    requestFailed(err) {
      this.accountLoginErrMsg = err
      this.isLoginError = true
    },
    /**
     * 从 localStorage 中读取信息
     */
    getLocalStorageData() {
      const account = Vue.ls.get('LOGIN_ACCOUNT')
      if (account) {
        this.form.setFieldsValue({
          account: account,
          rememberMe: true
        })
      }
    },
    /**
     * 将信息写入 localStorage
     */
    setLocalStorageData() {
      if (this.form.getFieldValue('rememberMe')) {
        Vue.ls.set('LOGIN_ACCOUNT', this.form.getFieldValue('account'))
      } else {
        Vue.ls.remove('LOGIN_ACCOUNT')
      }
    }
  }
}
</script>

<style lang="less" scoped>
.user-layout-login {
  label {
    font-size: 14px;
  }

  .getCaptcha {
    display: block;
    width: 100%;
    height: 40px;
  }

  .forge-password {
    font-size: 14px;
  }

  button.login-button {
    padding: 0 15px;
    font-size: 16px;
    height: 40px;
    width: 100%;
  }

  .user-login-other {
    text-align: left;
    margin-top: 24px;
    line-height: 22px;

    .item-icon {
      font-size: 24px;
      color: rgba(0, 0, 0, 0.2);
      margin-left: 16px;
      vertical-align: middle;
      cursor: pointer;
      transition: color 0.3s;

      &:hover {
        color: #1890ff;
      }
    }

    .register {
      float: right;
    }
  }
}
</style>
