<template>
  <div
    class="login-content"
    :style="{ 'background-image': 'url(' + login.config.background + ')' }"
  >
    <el-row>
      <el-col :xs="0" :sm="0" :md="13" :lg="14" :xl="14"></el-col>
      <el-col class="main" :xs="24" :sm="24" :md="11" :lg="10" :xl="10">
        <transition name="el-zoom-in-center">
          <!-- 使用账号密码登录 -->
          <div v-if="login.type == 'input'" class="login-wrap sa-flex sa-flex-center sa-flex-1">
            <div class="admin-name">
              <div>
                <div class="sa-line-1">欢迎来到{{ appName }}</div>
                <div class="admin-welcome">很高兴再次见到您</div>
              </div>
            </div>
            <el-form
              :model="form.data"
              :rules="form.rules"
              label-position="left"
              ref="formRef"
              label-width="0"
            >
              <el-form-item prop="account">
                <el-input :class="form.data.account ? 'is-focus' : ''" v-model="form.data.account">
                  <template #prefix>
                    <div class="label">账号</div>
                  </template>
                </el-input>
              </el-form-item>
              <el-form-item prop="pwd">
                <el-input
                  :class="form.data.pwd ? 'is-focus' : ''"
                  v-model="form.data.pwd"
                  :type="showPwd ? 'password' : 'text'"
                  autocomplete="new-password"
                >
                  <template #prefix>
                    <div class="label">密码</div>
                  </template>
                  <template #suffix>
                    <span v-if="showPwd" @click="showPwd = false">
                      <sa-svg name="sa-password-hide" size="24"></sa-svg>
                    </span>
                    <span v-if="!showPwd" @click="showPwd = true">
                      <sa-svg name="sa-password-show" size="24"></sa-svg>
                    </span>
                  </template>
                </el-input>
              </el-form-item>

              <div>
                <el-checkbox
                  v-model="login.last.rememberMe"
                  @change="changeRememberMe"
                  label="记住我"
                ></el-checkbox>
              </div>
              <el-button type="primary" :loading="loginLoading" @click="accountLogin"
                >登录
              </el-button>
            </el-form>
          </div>
          <!-- 有记住的用户 -->
          <div
            v-else-if="login.type == 'rememberMe'"
            class="login-wrap sa-flex sa-flex-center sa-flex-1"
          >
            <div class="admin-name sa-flex sa-row-center">
              <sa-image :url="login.last.info.avatar" size="80" radius="40"></sa-image>
            </div>
            <el-form
              :model="form.data"
              :rules="form.rules"
              label-position="left"
              ref="formRef"
              label-width="0"
            >
              <el-form-item prop="account">
                <div class="sa-flex-1 sa-flex sa-row-center">
                  {{ login.last.info.nickname }}
                </div>
              </el-form-item>
              <el-form-item prop="pwd">
                <el-input
                  :class="form.data.pwd ? 'is-focus' : ''"
                  v-model="form.data.pwd"
                  :type="showPwd ? 'password' : 'text'"
                  autocomplete="new-password"
                >
                  <template #prefix>
                    <div class="label">密码</div>
                  </template>
                  <template #suffix>
                    <span v-if="showPwd" @click="showPwd = false">
                      <sa-svg name="sa-password-hide" size="24"></sa-svg>
                    </span>
                    <span v-if="!showPwd" @click="showPwd = true">
                      <sa-svg name="sa-password-show" size="24"></sa-svg>
                    </span>
                  </template>
                </el-input>
              </el-form-item>

              <el-button type="primary" :loading="loginLoading" @click="accountLogin"
                >登录
              </el-button>
              <el-button @click="changeLoginType('input')"> 使用其他账号登录 </el-button>
            </el-form>
          </div>
        </transition>
      </el-col>
    </el-row>
  </div>
</template>

<script setup>
  import { reactive, ref, unref, computed, onBeforeMount, onMounted, onUnmounted } from 'vue';

  import router from '@/sheep/router';
  import { useRoute } from 'vue-router';
  import adminApi from '@/sheep/local-data/admin';
  import storage from '@/sheep/utils/storage';
  import sheep from '@/sheep';
  import { checkUrl } from '@/sheep/utils/checkUrlSuffix';
  import { ElMessage } from 'element-plus';

  const accountStore = sheep.$store('account');
  const appStore = sheep.$store('app');
  const routeQuery = useRoute().query;
  if (routeQuery.token) {
    accountStore.setToken(`${routeQuery.token}`);
  }
  const appName = computed(() => appStore.info.name);

  const showPwd = ref(true);

  const loginLoading = ref(false);
  const formRef = ref(null);

  const form = reactive({
    data: {
      account: '',
      pwd: '',
    },
    rules: {
      account: [{ required: true, message: '请输入账号', trigger: 'blur' }],
      pwd: [{ required: true, message: '请输入密码', trigger: 'blur' }],
    },
  });

  // 登录
  const accountLogin = async () => {
    // 表单验证
    unref(formRef).validate(async (valid) => {
      if (!valid) return;
      loginLoading.value = true;
      let submit = form.data;
      const { code } = await accountStore.login(submit);
      loginLoading.value = false;
      if (code == '200') {
        ElMessage.success('登录成功');
        storage.set('lastLogin', login.last);
        await appStore.appLoad();
        router.push('/');
      }
    });
  };

  const login = reactive({
    config: {
      background: '',
    },
    type: 'input',
    last: {},
  });

  // 初始化登陆表单
  function checkLastLogin() {
    login.last = storage.get('lastLogin', { rememberMe: false });
    if (login.last.rememberMe) {
      login.type = 'rememberMe';
      form.data.account = login.last.info.account;
    }
  }

  function changeLoginType(type) {
    login.type = type;
    if (type == 'input') {
      form.data.account = '';
      form.data.pwd = '';
      initLogin();
    }
  }

  function changeRememberMe(e) {
    login.last.rememberMe = e;
  }

  onBeforeMount(async () => {
    // 检测登录态
    if (accountStore.isLogin) {
      await appStore.appLoad();
      router.push('/');
    } else {
      initLogin();
      checkLastLogin();
    }
  });

  onMounted(() => {
    document.addEventListener('keyup', enterKey);
  });

  onUnmounted(() => {
    document.removeEventListener('keyup', enterKey);
  });

  function enterKey(event) {
    const code = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
    if (code == 13) {
      accountLogin();
    }
  }

  async function initLogin() {
    const { data } = adminApi.loginConfig();
    console.log(data);
    login.config = data;
    login.config.background = login.config.background;
  }
</script>
<style lang="scss">
  .login-content {
    .el-form {
      width: 100%;

      .el-button {
        width: 100%;
        height: 48px;
        line-height: 1;
        margin-top: 10px;
      }

      .el-button--default {
        margin-top: 0;

        .sa-svg {
          font-size: 22px;
          margin-right: 6px;
        }
      }

      .el-form-item {
        margin-bottom: 32px;
      }

      .el-form-item__content {
        line-height: unset;
      }
    }
  }
</style>
<style lang="scss" scoped>
  .login-content {
    height: 100%;
    color: var(--sa-subtitle);
    background-size: cover;
    background-repeat: no-repeat;
    background-color: var(--sa-background-assist);

    @media only screen and (max-width: 768px) {
      background-position: center;
    }

    .el-row {
      height: 100%;

      .el-col {
        display: flex;
        align-items: center;
      }

      @media only screen and (max-width: 992px) {
        .el-col {
          justify-content: center;
        }
      }
    }

    .main {
      position: relative;
    }

    .login-wrap {
      width: 460px;
      flex-direction: column;
      padding: 56px 52px 64px;
      border-radius: 8px;
      background: var(--sa-background-assist);
      filter: drop-shadow(0 0 16px rgba(0, 0, 0, 0.2));
      position: absolute;

      .admin-name {
        width: 100%;
        height: 112px;
        font-size: 32px;
        text-align: center;

        .admin-welcome {
          font-size: 20px;
          margin-top: 16px;
          text-align: center;
        }

        .sa-image {
          margin-bottom: 32px;
        }
      }
    }

    .login-wrap {
      height: 500px;
    }

    @media only screen and (max-width: 768px) {
      .login-wrap {
        width: 100%;
        max-width: unset;
        height: 100%;
        border-radius: 0;
        padding: 56px 20px 64px;
        background: transparent;
        filter: unset;

        .admin-name {
          font-size: 26px;
        }
      }
    }

    :deep() {
      .el-input {
        --el-input-height: 48px;
        max-width: unset;

        .el-input__wrapper {
          position: relative;

          .label {
            display: flex;
            align-items: center;
            width: fit-content;
            height: 20px;
            position: absolute;
            top: 14px;
            left: 11px;
            pointer-events: none;
            font-size: 18px;
            color: var(--sa-subfont);
          }

          &.is-focus {
            .label {
              top: 4px;
              font-size: 12px;
              transition: ease-in-out 0.2s;
            }

            .el-input__inner {
              padding: 25px 0 9px;
            }
          }
        }

        &.is-focus {
          .label {
            top: 4px;
            font-size: 12px;
            transition: ease-in-out 0.2s;
          }

          .el-input__inner {
            padding: 25px 0 9px;
          }
        }
      }
    }
  }
</style>
