<template>
  <div class="welcome">
    <HeaderBar />

    <div class="operation-bar">
      <h2 class="page-title">{{ $t('header.userManagement') }}</h2>
      <div class="right-operations">
        <el-input :placeholder="$t('user.searchPhone')" v-model="searchPhone" class="search-input" clearable
          @keyup.enter.native="handleSearch" />
        <el-button class="btn-search" @click="handleSearch">{{ $t('user.search') }}</el-button>
      </div>
    </div>

    <div class="main-wrapper">
      <div class="content-panel">
        <div class="content-area">
          <el-card class="user-card" shadow="never">
            <el-table ref="userTable" :data="userList" class="transparent-table" v-loading="loading"
              :element-loading-text="$t('modelConfig.loading')" element-loading-spinner="el-icon-loading"
              element-loading-background="rgba(255, 255, 255, 0.7)">
              <el-table-column :label="$t('modelConfig.select')" align="center" width="120">
                <template slot-scope="scope">
                  <el-checkbox v-model="scope.row.selected"></el-checkbox>
                </template>
              </el-table-column>
              <el-table-column :label="$t('user.userid')" prop="userid" align="center"></el-table-column>
              <el-table-column :label="$t('user.mobile')" prop="mobile" align="center"></el-table-column>
              <el-table-column :label="$t('user.deviceCount')" prop="deviceCount" align="center"></el-table-column>
              <el-table-column :label="$t('user.createDate')" prop="createDate" align="center"></el-table-column>
              <el-table-column :label="$t('user.status')" prop="status" align="center">
                <template slot-scope="scope">
                  <el-tag v-if="scope.row.status === 1" type="success">{{ $t('user.normal') }}</el-tag>
                  <el-tag v-else type="danger">{{ $t('user.disabled') }}</el-tag>
                </template>
              </el-table-column>
              <el-table-column :label="$t('modelConfig.action')" align="center" width="300px">
                <template slot-scope="scope">
                  <el-button size="mini" type="text" @click="resetPassword(scope.row)">{{ $t('user.resetPassword')
                    }}</el-button>
                  <el-button size="mini" type="text" v-if="scope.row.status === 1"
                    @click="handleChangeStatus(scope.row, 0)">{{ $t('user.disableAccount') }}</el-button>
                  <el-button size="mini" type="text" v-if="scope.row.status === 0"
                    @click="handleChangeStatus(scope.row, 1)">{{ $t('user.enableAccount') }}</el-button>
                  <el-button size="mini" type="text" @click="deleteUser(scope.row)">{{ $t('user.deleteUser')
                    }}</el-button>
                </template>
              </el-table-column>
            </el-table>

            <div class="table_bottom">
              <div class="ctrl_btn">
                <el-button size="mini" type="primary" class="select-all-btn" @click="handleSelectAll">
                  {{ isAllSelected ? $t('user.deselectAll') : $t('user.selectAll') }}
                </el-button>
                <el-button size="mini" type="success" icon="el-icon-circle-check" @click="batchEnable">{{
                  $t('user.enable')
                  }}</el-button>
                <el-button size="mini" type="warning" @click="batchDisable"><i
                    class="el-icon-remove-outline rotated-icon"></i>{{
                      $t('user.disable') }}</el-button>
                <el-button size="mini" type="danger" icon="el-icon-delete" @click="batchDelete">{{ $t('user.delete')
                  }}</el-button>
              </div>
              <div class="custom-pagination">
                <el-select v-model="pageSize" @change="handlePageSizeChange"
                  :class="['page-size-select', { 'page-size-select-en': $i18n.locale === 'en' }]">
                  <el-option v-for="item in pageSizeOptions" :key="item"
                    :label="$t('modelConfig.itemsPerPage', { items: item })" :value="item">
                  </el-option>
                </el-select>

                <button class="pagination-btn" :disabled="currentPage === 1" @click="goFirst">
                  {{ $t('modelConfig.firstPage') }}
                </button>
                <button class="pagination-btn" :disabled="currentPage === 1" @click="goPrev">
                  {{ $t('modelConfig.prevPage') }}
                </button>
                <button v-for="page in visiblePages" :key="page" class="pagination-btn"
                  :class="{ active: page === currentPage }" @click="goToPage(page)">
                  {{ page }}
                </button> <button class="pagination-btn" :disabled="currentPage === pageCount" @click="goNext">
                  {{ $t('modelConfig.nextPage') }}
                </button>
                <span class="total-text">{{ $t('modelConfig.totalRecords', { total: total }) }}</span>
              </div>
            </div>
          </el-card>
        </div>
      </div>
    </div>

    <view-password-dialog :visible.sync="showViewPassword" :password="currentPassword" />
    <el-footer>
      <version-footer />
    </el-footer>
  </div>
</template>

<script>
import Api from "@/apis/api";
import HeaderBar from "@/components/HeaderBar.vue";
import VersionFooter from "@/components/VersionFooter.vue";
import ViewPasswordDialog from "@/components/ViewPasswordDialog.vue";
import i18n from '@/i18n';
export default {
  components: { HeaderBar, ViewPasswordDialog, VersionFooter },
  data() {
    return {
      showViewPassword: false,
      currentPassword: "",
      searchPhone: "",
      userList: [],
      pageSizeOptions: [10, 20, 50, 100],
      currentPage: 1,
      pageSize: 10,
      total: 0,
      isAllSelected: false,
      loading: false,
    };
  },
  created() {
    this.fetchUsers();
  },
  computed: {
    pageCount() {
      return Math.ceil(this.total / this.pageSize);
    },
    visiblePages() {
      const pages = [];
      const maxVisible = 3;
      let start = Math.max(1, this.currentPage - 1);
      let end = Math.min(this.pageCount, start + maxVisible - 1);

      if (end - start + 1 < maxVisible) {
        start = Math.max(1, end - maxVisible + 1);
      }

      for (let i = start; i <= end; i++) {
        pages.push(i);
      }
      return pages;
    }
  },
  methods: {
    handlePageSizeChange(val) {
      this.pageSize = val;
      this.currentPage = 1;
      this.fetchUsers();
    },

    fetchUsers() {
      this.loading = true;
      Api.admin.getUserList(
        {
          page: this.currentPage,
          limit: this.pageSize,
          mobile: this.searchPhone,
        },
        ({ data }) => {
          this.loading = false; // 结束加载
          if (data.code === 0) {
            this.userList = data.data.list.map(item => ({
              ...item,
              selected: false
            }));
            this.total = data.data.total;
          }
        }
      );
    },
    handleSearch() {
      this.currentPage = 1;
      this.fetchUsers();
    },
    handleSelectAll() {
      this.isAllSelected = !this.isAllSelected;
      this.userList.forEach(row => {
        row.selected = this.isAllSelected;
      });
    },
    batchDelete() {
      const selectedUsers = this.userList.filter(user => user.selected);
      if (selectedUsers.length === 0) {
        this.$message.warning(this.$t('user.selectUsersFirst'));
        return;
      }

      this.$confirm(this.$t('user.confirmDeleteSelected', { count: selectedUsers.length }), this.$t('common.warning'), {
        confirmButtonText: this.$t('common.confirm'),
        cancelButtonText: this.$t('common.cancel'),
        type: "warning",
      })
        .then(async () => {
          const loading = this.$loading({
            lock: true,
            text: this.$t('user.deleting'),
            spinner: "el-icon-loading",
            background: "rgba(0, 0, 0, 0.7)",
          });

          try {
            const results = await Promise.all(
              selectedUsers.map((user) => {
                return new Promise((resolve) => {
                  Api.admin.deleteUser(user.userid, ({ data }) => {
                    if (data.code === 0) {
                      resolve({ success: true, userid: user.userid });
                    } else {
                      resolve({ success: false, userid: user.userid, msg: data.msg });
                    }
                  });
                });
              })
            );

            const successCount = results.filter((r) => r.success).length;
            const failCount = results.length - successCount;

            if (failCount === 0) {
              this.$message.success({
                message: this.$t('user.deleteSuccess', { count: successCount }),
                showClose: true
              });
            } else if (successCount === 0) {
              this.$message.error({
                message: this.$t('user.deleteFailed'),
                showClose: true
              });
            } else {
              this.$message.warning(
                this.$t('user.partialDelete', { successCount: successCount, failCount: failCount })
              );
            }

            this.fetchUsers();
          } catch (error) {
            this.$message.error(this.$t('user.deleteError'));
          } finally {
            loading.close();
          }
        })
        .catch(() => {
          this.$message.info(this.$t('user.deleteCancelled'));
        });
    },
    batchEnable() {
      const selectedUsers = this.userList.filter(user => user.selected);
      this.handleChangeStatus(selectedUsers, 1);
    },
    batchDisable() {
      const selectedUsers = this.userList.filter(user => user.selected);
      this.handleChangeStatus(selectedUsers, 0);
    },
    resetPassword(row) {
      this.$confirm(this.$t('user.confirmResetPassword'), this.$t('common.warning'), {
        confirmButtonText: this.$t('common.confirm'),
        cancelButtonText: this.$t('common.cancel'),
        type: 'warning'
      }).then(() => {
        Api.admin.resetUserPassword(row.userid, ({ data }) => {
          if (data.code === 0) {
            // 显示生成的默认密码
            this.$alert(this.$t('user.resetPasswordSuccess') + '\n\n' + this.$t('user.generatedPassword') + ': ' + data.data, this.$t('common.success'), {
              confirmButtonText: this.$t('common.confirm'),
              dangerouslyUseHTMLString: true
            });
            this.fetchUsers();
          } else {
            this.$message.error(data.msg || this.$t('user.operationFailed'));
          }
        });
      }).catch(() => {
        this.$message.info(this.$t('common.deleteCancelled'));
      });
    },
    deleteUser(row) {
      this.$confirm(this.$t('user.confirmDeleteUser'), this.$t('common.warning'), {
        confirmButtonText: this.$t('common.confirm'),
        cancelButtonText: this.$t('common.cancel'),
        type: 'warning'
      }).then(() => {
        Api.admin.deleteUser(row.userid, ({ data }) => {
          if (data.code === 0) {
            this.$message.success(this.$t('user.deleteUserSuccess'));
            this.fetchUsers();
          } else {
            this.$message.error(data.msg || this.$t('user.operationFailed'));
          }
        });
      }).catch(() => {
        this.$message.info(this.$t('common.deleteCancelled'));
      });
    },
    goFirst() {
      this.currentPage = 1;
      this.fetchUsers();
    },
    goPrev() {
      if (this.currentPage > 1) {
        this.currentPage--;
        this.fetchUsers();
      }
    },
    goNext() {
      if (this.currentPage < this.pageCount) {
        this.currentPage++;
        this.fetchUsers();
      }
    },
    goToPage(page) {
      this.currentPage = page;
      this.fetchUsers();
    },
    handleChangeStatus(row, status) {
      // 处理单个用户或用户数组
      const users = Array.isArray(row) ? row : [row];
      const actionText = status === 0 ? this.$t('user.disable') : this.$t('user.enable');
      const userCount = users.length;

      this.$confirm(this.$t('user.confirmStatusChange', { action: actionText, count: userCount }), this.$t('common.warning'), {
        confirmButtonText: this.$t('common.confirm'),
        cancelButtonText: this.$t('common.cancel'),
        type: 'warning'
      }).then(() => {
        const userIds = users.map(user => user.userid);
        if (userIds.some(id => isNaN(id))) {
          this.$message.error(this.$t('user.invalidUserId'));
          return;
        }

        Api.user.changeUserStatus(status, userIds, ({ data }) => {
          if (data.code === 0) {
            this.$message.success({
              message: this.$t('user.statusChangeSuccess', { action: actionText, count: userCount }),
              showClose: true
            });
            this.fetchUsers(); // 刷新用户列表
          } else {
            this.$message.error({
              message: this.$t('user.operationFailed'),
              showClose: true
            });
          }
        });
      }).catch(() => {
        // 用户取消操作
      });
    },
    // 这个方法已被batchDelete替代，保留用于向后兼容
    handleBatchDelete() {
      this.batchDelete();
    },
    // This method has been fixed to use existing functionality
    handleBatchStatusChange(status) {
      const selectedUsers = this.userList.filter(user => user.selected);
      if (selectedUsers.length === 0) {
        this.$message.warning(this.$t('user.selectUsersFirst'));
        return;
      }
      
      // Call the existing handleChangeStatus method which already handles both single and multiple users
      this.handleChangeStatus(selectedUsers, status);
    },
  },
};
</script>

<style lang="scss" scoped>
.welcome {
  min-width: 900px;
  min-height: 506px;
  height: 100vh;
  display: flex;
  position: relative;
  flex-direction: column;
  background-size: cover;
  background: linear-gradient(to bottom right, #dce8ff, #e4eeff, #e6cbfd) center;
  -webkit-background-size: cover;
  -o-background-size: cover;
  overflow: hidden;
}

.main-wrapper {
  margin: 5px 22px;
  border-radius: 15px;
  min-height: calc(100vh - 24vh);
  height: auto;
  max-height: 80vh;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  position: relative;
  background: rgba(237, 242, 255, 0.5);
  display: flex;
  flex-direction: column;
}

.operation-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
}

.page-title {
  font-size: 24px;
  margin: 0;
}

.right-operations {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

.search-input {
  width: 240px;
}

.btn-search {
  background: linear-gradient(135deg, #6b8cff, #a966ff);
  border: none;
  color: white;
}

.content-panel {
  flex: 1;
  display: flex;
  overflow: hidden;
  height: 100%;
  border-radius: 15px;
  background: transparent;
  border: 1px solid #fff;
}

.content-area {
  flex: 1;
  height: 100%;
  min-width: 600px;
  overflow-x: auto;
  background-color: white;
  display: flex;
  flex-direction: column;
}

.user-card {
  background: white;
  flex: 1;
  display: flex;
  flex-direction: column;
  border: none;
  box-shadow: none;
  overflow: hidden;

  ::v-deep .el-card__body {
    padding: 15px;
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
  }
}

.table_bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
}

.ctrl_btn {
  display: flex;
  gap: 8px;
  padding-left: 26px;

  .el-button {
    min-width: 72px;
    height: 32px;
    padding: 7px 12px 7px 10px;
    font-size: 12px;
    border-radius: 4px;
    line-height: 1;
    font-weight: 500;
    border: none;
    transition: all 0.3s ease;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);

    &:hover {
      transform: translateY(-1px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    }
  }

  .el-button--primary {
    background: #5f70f3;
    color: white;
  }

  .el-button--success {
    background: #5bc98c;
    color: white;
  }

  .el-button--warning {
    background: #f6d075;
    color: black;
  }

  .el-button--danger {
    background: #fd5b63;
    color: white;
  }
}

.rotated-icon {
  display: inline-block;
  transform: rotate(45deg);
  margin-right: 4px;
  color: black;
}

.custom-pagination {
  display: flex;
  align-items: center;
  gap: 8px;

  .el-select {
    margin-right: 8px;
  }

  .pagination-btn:first-child,
  .pagination-btn:nth-child(2),
  .pagination-btn:nth-child(3),
  .pagination-btn:nth-last-child(2) {
    min-width: 60px;
    height: 32px;
    padding: 0 12px;
    border-radius: 4px;
    border: 1px solid #e4e7ed;
    background: #dee7ff;
    color: #606266;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;

    &:hover {
      background: #d7dce6;
    }

    &:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }
  }

  .pagination-btn:not(:first-child):not(:nth-child(2)):not(:nth-child(3)):not(:nth-last-child(2)) {
    min-width: 28px;
    height: 32px;
    padding: 0;
    border-radius: 4px;
    border: 1px solid transparent;
    background: transparent;
    color: #606266;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;

    &:hover {
      background: rgba(245, 247, 250, 0.3);
    }
  }

  .pagination-btn.active {
    background: #5f70f3 !important;
    color: #ffffff !important;
    border-color: #5f70f3 !important;

    &:hover {
      background: #6d7cf5 !important;
    }
  }

  .total-text {
    color: #909399;
    font-size: 14px;
    margin-left: 10px;
  }
}

:deep(.transparent-table) {
  background: white;
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;

  .el-table__body-wrapper {
    flex: 1;
    overflow-y: auto;
    max-height: none !important;
  }

  .el-table__header-wrapper {
    flex-shrink: 0;
  }

  .el-table__header th {
    background: white !important;
    color: black;
  }

  &::before {
    display: none;
  }

  .el-table__body tr {
    background-color: white;

    td {
      border-top: 1px solid rgba(0, 0, 0, 0.04);
      border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    }
  }
}

:deep(.el-table .el-button--text) {
  color: #7079aa !important;
}

:deep(.el-table .el-button--text:hover) {
  color: #5a64b5 !important;
}


:deep(.el-checkbox__inner) {
  background-color: #eeeeee !important;
  border-color: #cccccc !important;
}

:deep(.el-checkbox__inner:hover) {
  border-color: #cccccc !important;
}

:deep(.el-checkbox__input.is-checked .el-checkbox__inner) {
  background-color: #5f70f3 !important;
  border-color: #5f70f3 !important;
}

@media (min-width: 1144px) {
  .table_bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
  }

  :deep(.transparent-table) {
    .el-table__body tr {
      td {
        padding-top: 16px;
        padding-bottom: 16px;
      }

      &+tr {
        margin-top: 10px;
      }
    }
  }
}

.page-size-select {
  width: 100px;
  margin-right: 10px;

  :deep(.el-input__inner) {
    height: 32px;
    line-height: 32px;
    border-radius: 4px;
    border: 1px solid #e4e7ed;
    background: #dee7ff;
    color: #606266;
    font-size: 14px;
  }

  &.page-size-select-en {
    width: 130px;

    :deep(.el-input__inner) {
      height: 36px;
      line-height: 36px;
      font-size: 15px;
    }
  }

  :deep(.el-input__suffix) {
    right: 6px;
    width: 15px;
    height: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    top: 6px;
    border-radius: 4px;
  }

  :deep(.el-input__suffix-inner) {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
  }

  :deep(.el-icon-arrow-up:before) {
    content: "";
    display: inline-block;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 9px solid #606266;
    position: relative;
    transform: rotate(0deg);
    transition: transform 0.3s;
  }
}

.el-table {
  --table-max-height: calc(100vh - 40vh);
  max-height: var(--table-max-height);

  .el-table__body-wrapper {
    max-height: calc(var(--table-max-height) - 40px);
  }
}

:deep(.el-loading-mask) {
  background-color: rgba(255, 255, 255, 0.6) !important;
  backdrop-filter: blur(2px);
}

:deep(.el-loading-spinner .circular) {
  width: 28px;
  height: 28px;
}

:deep(.el-loading-spinner .path) {
  stroke: #6b8cff;
}

:deep(.el-loading-text) {
  color: #6b8cff !important;
  font-size: 14px;
  margin-top: 8px;
}
</style>
