import { Component, OnInit, OnDestroy } from '@angular/core';
import { CommonModule, DatePipe } from '@angular/common';
import {
  FormsModule,
  ReactiveFormsModule,
  FormBuilder,
  FormGroup,
  Validators,
} from '@angular/forms';
import { debounceTime, distinctUntilChanged } from 'rxjs/operators';
import { Subscription } from 'rxjs';
import { Router, ActivatedRoute } from '@angular/router';

// NG-ZORRO 组件
import { NzTableModule } from 'ng-zorro-antd/table';
import { NzDividerModule } from 'ng-zorro-antd/divider';
import { NzButtonModule } from 'ng-zorro-antd/button';
import { NzIconModule } from 'ng-zorro-antd/icon';
import { NzFormModule } from 'ng-zorro-antd/form';
import { NzInputModule } from 'ng-zorro-antd/input';
import { NzSelectModule } from 'ng-zorro-antd/select';
import { NzDatePickerModule } from 'ng-zorro-antd/date-picker';
import { NzPageHeaderModule } from 'ng-zorro-antd/page-header';
import { NzCardModule } from 'ng-zorro-antd/card';
import { NzPopconfirmModule } from 'ng-zorro-antd/popconfirm';
import { NzTagModule } from 'ng-zorro-antd/tag';
import { NzMessageService } from 'ng-zorro-antd/message';
import { NzSpinModule } from 'ng-zorro-antd/spin';
import { NzEmptyModule } from 'ng-zorro-antd/empty';
import { NzPaginationModule } from 'ng-zorro-antd/pagination';
import { NzModalModule, NzModalService } from 'ng-zorro-antd/modal';
import { NzDescriptionsModule } from 'ng-zorro-antd/descriptions';

import { MessageService, IMessageRecord } from '../services/message.service';
import { MessageRecordDetailComponent } from './message-record-detail.component';
import { UserDetailModalComponent } from './user-detail-modal.component';

@Component({
  selector: 'app-message-record',
  standalone: true,
  imports: [
    CommonModule,
    FormsModule,
    ReactiveFormsModule,
    NzTableModule,
    NzDividerModule,
    NzButtonModule,
    NzIconModule,
    NzFormModule,
    NzInputModule,
    NzSelectModule,
    NzDatePickerModule,
    NzPageHeaderModule,
    NzCardModule,
    NzPopconfirmModule,
    NzTagModule,
    NzSpinModule,
    NzEmptyModule,
    NzPaginationModule,
    NzDescriptionsModule,
    NzModalModule,
    DatePipe,
  ],
  template: `
    <nz-page-header [nzGhost]="false">
      <nz-page-header-title>消息推送记录</nz-page-header-title>
      <nz-page-header-content>
        查看和管理所有消息推送记录
      </nz-page-header-content>
    </nz-page-header>

    <nz-card>
      <form nz-form [formGroup]="filterForm" class="filter-form">
        <div nz-row [nzGutter]="16">
          <!-- 基本筛选条件 -->
          <div nz-col [nzSpan]="4">
            <nz-form-item>
              <nz-input-group nzPrefixIcon="user">
                <input nz-input placeholder="用户ID" formControlName="uid" />
              </nz-input-group>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="4">
            <nz-form-item>
              <nz-input-group nzPrefixIcon="project">
                <input
                  nz-input
                  placeholder="活动"
                  formControlName="activityName"
                />
              </nz-input-group>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="4">
            <nz-form-item>
              <nz-input-group nzPrefixIcon="ant-design">
                <input
                  nz-input
                  placeholder="策略"
                  formControlName="strategyName"
                />
              </nz-input-group>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="4">
            <nz-form-item>
              <nz-input-group nzPrefixIcon="cluster">
                <input
                  nz-input
                  placeholder="模板"
                  formControlName="templateName"
                />
              </nz-input-group>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="4">
            <nz-form-item>
              <nz-select
                nzPlaceHolder="状态"
                formControlName="status"
                nzAllowClear
              >
                <nz-option nzValue="0" nzLabel="未发送"></nz-option>
                <nz-option nzValue="1" nzLabel="发送成功"></nz-option>
                <nz-option nzValue="2" nzLabel="已送达"></nz-option>
                <nz-option nzValue="3" nzLabel="已打开"></nz-option>
                <nz-option nzValue="-1" nzLabel="发送失败"></nz-option>
              </nz-select>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="4" class="button-col">
            <button nz-button (click)="resetFilters()">重置</button>
          </div>
        </div>

        <!-- 日期筛选区域 -->
        <div nz-row [nzGutter]="16" style="margin-top: 16px;">
          <div nz-col [nzSpan]="6">
            <nz-form-item>
              <nz-range-picker
                formControlName="plannedSendAt"
                nzPlaceHolder="计划发送时间"
                style="width: 100%;"
              ></nz-range-picker>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="6">
            <nz-form-item>
              <nz-range-picker
                formControlName="actualSendAt"
                nzPlaceHolder="实际发送时间"
                style="width: 100%;"
              ></nz-range-picker>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="6">
            <nz-form-item>
              <nz-range-picker
                formControlName="deliveredAt"
                nzPlaceHolder="送达时间"
                style="width: 100%;"
              ></nz-range-picker>
            </nz-form-item>
          </div>

          <div nz-col [nzSpan]="6">
            <nz-form-item>
              <nz-range-picker
                formControlName="openedAt"
                nzPlaceHolder="打开时间"
                style="width: 100%;"
              ></nz-range-picker>
            </nz-form-item>
          </div>
        </div>
      </form>

      <nz-spin [nzSpinning]="isLoading">
        <nz-table
          #recordsTable
          [nzData]="records"
          [nzLoading]="isLoading"
          [nzFrontPagination]="false"
          [nzBordered]="true"
          [nzSize]="'small'"
          [nzShowPagination]="false"
        >
          <thead>
            <tr>
              <th>用户ID</th>
              <th>CC</th>
              <th>消息</th>
              <th>来源</th>
              <th>状态</th>
              <th>计划发送时间</th>
              <th>实际发送时间</th>
              <th>送达时间</th>
              <th>打开时间</th>
              <th>创建时间</th>
              <th>操作</th>
            </tr>
          </thead>
          <tbody>
            <tr *ngFor="let record of records">
              <td>
                <a (click)="showUserDetail(record.uid)">{{ record.uid }}</a>
              </td>
              <td>{{ record.cc }}</td>
              <td class="message-content-cell">
                <div class="message-title">
                  {{ record.title }}
                </div>
                <div class="message-content">
                  {{ record.content }}
                </div>
              </td>
              <td class="source-cell">
                @if(record.activityName) {
                <div class="source-item">
                  <span class="source-label">活动:</span>
                  <span class="source-value">{{ record.activityName }}</span>
                </div>
                } @if(record.strategyName) {
                <div class="source-item">
                  <span class="source-label">策略:</span>
                  <span class="source-value">{{ record.strategyName }}</span>
                </div>
                } @if(record.templateName) {
                <div class="source-item">
                  <span class="source-label">模板:</span>
                  <span class="source-value">{{ record.templateName }}</span>
                </div>
                }
              </td>

              <td>
                <nz-tag [nzColor]="getStatusColor(record.status)">
                  {{ getStatusName(record.status) }}
                </nz-tag>
              </td>
              <td>{{ record.plannedSendAt | date : 'yyyy-MM-dd HH:mm' }}</td>
              <td>{{ record.actualSendAt | date : 'yyyy-MM-dd HH:mm' }}</td>
              <td>{{ record.deliveredAt | date : 'yyyy-MM-dd HH:mm' }}</td>
              <td>{{ record.openedAt | date : 'yyyy-MM-dd HH:mm' }}</td>
              <td>{{ record.createdAt | date : 'yyyy-MM-dd HH:mm' }}</td>
              <td>
                <a (click)="showDetail(record)">详情</a>
              </td>
            </tr>
          </tbody>
        </nz-table>

        <nz-empty
          *ngIf="records.length === 0 && !isLoading"
          nzNotFoundContent="暂无消息记录"
        ></nz-empty>
      </nz-spin>

      <div class="pagination-container">
        <nz-pagination
          [nzPageIndex]="pagination.page"
          [nzTotal]="pagination.total"
          [nzPageSize]="pagination.limit"
          [nzShowTotal]="totalTemplate"
          (nzPageIndexChange)="onPageChange($event)"
          (nzPageSizeChange)="onPageSizeChange($event)"
          nzShowSizeChanger
          nzShowQuickJumper
        ></nz-pagination>
        <ng-template #totalTemplate let-total>
          <span>共 {{ total }} 条记录</span>
        </ng-template>
      </div>
    </nz-card>
  `,
  styles: [
    `
      nz-select {
        width: 100%;
      }
      .filter-form {
        margin-bottom: 16px;

        nz-range-picker {
          width: 100%;
        }
      }

      .button-col {
        display: flex;
        gap: 8px;
        justify-content: flex-end;
      }

      nz-table {
        margin-top: 16px;
      }

      .pagination-container {
        display: flex;
        justify-content: center;
        margin-top: 16px;
      }

      nz-tag {
        margin-right: 0;
      }

      /* 详情按钮样式 */
      a[nz-button] {
        padding: 0 8px;
      }

      @media (max-width: 768px) {
        nz-col {
          margin-bottom: 8px;
        }

        .button-col {
          justify-content: flex-start;
        }
      }

      /* 消息内容单元格样式 */
      .message-content-cell {
        max-width: 300px;
        min-width: 200px;
      }
      /* 消息标题样式 */
      .message-title {
        font-weight: bold;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        margin-bottom: 4px;
      }
      /* 消息内容样式 */
      .message-content {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
        line-height: 1.4;
        color: #666;
      }
      /* 来源单元格样式 */
      .source-cell {
        min-width: 200px;
        max-width: 300px;
      }

      .source-item {
        display: flex;
        margin-bottom: 4px;
        line-height: 1.5;
      }

      .source-label {
        font-weight: 500;
        color: #666;
        min-width: 40px;
        margin-right: 8px;
      }

      .source-value {
        flex: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      /* 响应式调整 */
      @media (max-width: 1200px) {
        .source-cell {
          min-width: 150px;
          max-width: 200px;
        }
      }
    `,
  ],
})
export class MessageRecordComponent implements OnInit, OnDestroy {
  records: IMessageRecord[] = [];
  isLoading = false;
  private queryParamsSubscription!: Subscription;

  // 使用 FormGroup 管理所有筛选字段
  filterForm: FormGroup;

  // 分页参数
  pagination = {
    page: 1,
    limit: 30,
    total: 0,
  };

  constructor(
    private messageService: MessageService,
    private message: NzMessageService,
    private modalService: NzModalService,
    private fb: FormBuilder,
    private router: Router,
    private route: ActivatedRoute
  ) {
    this.filterForm = this.fb.group({
      uid: [null],
      activityName: [null],
      templateName: [null],
      strategyName: [null],
      status: [null],
      plannedSendAt: [null],
      actualSendAt: [null],
      deliveredAt: [null],
      openedAt: [null],
    });
  }

  ngOnInit(): void {
    // 订阅 URL 查询参数的变化
    this.queryParamsSubscription = this.route.queryParams.subscribe(
      (params) => {
        // 更新分页状态
        this.pagination.page = params['page']
          ? parseInt(params['page'], 10)
          : 1;
        this.pagination.limit = params['limit']
          ? parseInt(params['limit'], 10)
          : 30;

        // 更新表单控件的值，日期需要特殊处理
        const formValue: any = {};
        for (const key in this.filterForm.controls) {
          if (params[key]) {
            // 日期范围参数格式: "2023-01-01T00:00:00Z,2023-01-31T23:59:59Z"
            if (key.includes('At')) {
              const dateRange = params[key].split(',');
              if (dateRange.length === 2) {
                formValue[key] = [
                  new Date(dateRange[0]),
                  new Date(dateRange[1]),
                ];
              }
            } else {
              formValue[key] = params[key];
            }
          }
        }
        // 使用 patchValue 来避免未提供的控件报错
        this.filterForm.patchValue(formValue, { emitEvent: false });

        this.loadRecords();
      }
    );

    // 监听表单变化，自动触发查询
    this.filterForm.valueChanges
      .pipe(
        debounceTime(500),
        distinctUntilChanged(
          (prev, curr) => JSON.stringify(prev) === JSON.stringify(curr)
        )
      )
      .subscribe(() => {
        this.onFilter();
      });
  }

  ngOnDestroy(): void {
    if (this.queryParamsSubscription) {
      this.queryParamsSubscription.unsubscribe();
    }
  }

  loadRecords(): void {
    this.isLoading = true;

    // 准备查询参数
    const params: any = this.prepareFilters();
    params['page'] = this.pagination.page;
    params['limit'] = this.pagination.limit;

    this.messageService.getPaginatedRecords(params).subscribe({
      next: (response) => {
        this.records = response.data;
        this.pagination.total = response.pagination.total;
        this.isLoading = false;
      },
      error: (err) => {
        this.message.error('加载记录失败: ' + (err.message || '未知错误'));
        this.isLoading = false;
      },
    });
  }

  private prepareFilters(): any {
    const formValue = this.filterForm.value;
    const filters: any = {};

    for (const key in formValue) {
      if (
        formValue.hasOwnProperty(key) &&
        formValue[key] !== null &&
        formValue[key] !== ''
      ) {
        if (Array.isArray(formValue[key])) {
          if (formValue[key].length === 2) {
            const start = formValue[key][0].toISOString();
            const end = formValue[key][1].toISOString();
            filters[key] = `${start},${end}`;
          }
        } else {
          filters[key] = formValue[key];
        }
      }
    }
    return filters;
  }

  // 重构为私有方法，用于导航到新 URL
  private navigateToUrl(): void {
    const filters = this.prepareFilters();
    const queryParams = {
      page: this.pagination.page,
      limit: this.pagination.limit,
      ...filters,
    };

    // FIX: Removed queryParamsHandling: 'merge' to allow empty filters to be removed from the URL
    this.router.navigate([], {
      relativeTo: this.route,
      queryParams,
    });
  }

  onFilter(): void {
    this.pagination.page = 1; // 筛选时重置到第一页
    this.navigateToUrl();
  }

  resetFilters(): void {
    this.filterForm.reset();
    this.onFilter();
  }

  // 分页变更处理
  onPageChange(page: number): void {
    this.pagination.page = page;
    this.navigateToUrl();
  }

  onPageSizeChange(size: number): void {
    this.pagination.limit = size;
    this.pagination.page = 1;
    this.navigateToUrl();
  }

  // 显示详情模态框
  showDetail(record: IMessageRecord): void {
    this.modalService.create({
      nzTitle: `消息记录详情 - ${record.uid}`,
      nzWidth: '800px',
      nzContent: MessageRecordDetailComponent,
      nzData: { record },
      nzFooter: null,
    });
  }

  // 获取状态名称
  getStatusName(status: number): string {
    const statuses: Record<number, string> = {
      0: '未发送',
      1: '发送成功',
      2: '已送达',
      3: '已打开',
      [-1]: '发送失败',
    };
    return statuses[status] || '未知状态';
  }

  // 获取状态颜色
  getStatusColor(status: number): string {
    const colors: Record<number, string> = {
      0: 'default',
      1: 'processing',
      2: 'success',
      3: 'green',
      [-1]: 'error',
    };
    return colors[status] || 'default';
  }

  showUserDetail(uid: string): void {
    this.modalService.create({
      nzTitle: `用户详情 - ${uid}`,
      nzContent: UserDetailModalComponent,
      nzWidth: '800px',
      nzData: { uid }, // 传递用户UID
      nzFooter: null,
      nzBodyStyle: {
        'max-height': '70vh',
        'overflow-y': 'auto',
      },
    });
  }
}