import { Component, Input, Output, EventEmitter } from '@angular/core';
import { CommonModule } from '@angular/common';

/**
 * 紧急事件接口
 */
export interface UrgentEvent {
  id: string;
  title: string;
  description: string;
  eventType: 'review' | 'delivery' | 'phase_deadline' | 'custom';
  deadline: Date;
  projectId: string;
  projectName: string;
  designerName?: string;
  urgencyLevel: 'critical' | 'high' | 'medium';
  overdueDays?: number;
  phaseName?: string;
}

/**
 * 紧急事件面板组件（可复用）
 * 
 * 功能：
 * 1. 显示紧急事件列表
 * 2. 支持加载状态、空状态、错误状态
 * 3. 支持点击查看项目详情
 * 4. 自动计算逾期天数
 */
@Component({
  selector: 'app-urgent-events-panel',
  standalone: true,
  imports: [CommonModule],
  template: `
    <div class="todo-column todo-column-urgent">
      <!-- 面板头部 -->
      <div class="column-header">
        <h3>
          <svg viewBox="0 0 24 24" width="18" height="18" fill="currentColor">
            <path d="M1 21h22L12 2 1 21zm12-3h-2v-2h2v2zm0-4h-2v-4h2v4z"/>
          </svg>
          {{ title }}
          @if (events.length > 0) {
            <span class="task-count urgent">({{ events.length }})</span>
          }
        </h3>
        <span class="column-subtitle">{{ subtitle }}</span>
      </div>
      
      <!-- 加载状态 -->
      @if (loading) {
        <div class="loading-state">
          <svg class="spinner" viewBox="0 0 50 50">
            <circle cx="25" cy="25" r="20" fill="none" stroke-width="4"></circle>
          </svg>
          <p>{{ loadingText }}</p>
        </div>
      }
      
      <!-- 空状态 -->
      @if (!loading && events.length === 0) {
        <div class="empty-state">
          <svg viewBox="0 0 24 24" width="64" height="64" fill="#d1d5db">
            <path d="M9 16.2L4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4L9 16.2z"/>
          </svg>
          <p>{{ emptyText }}</p>
          <p class="hint">{{ emptyHint }}</p>
        </div>
      }
      
      <!-- 紧急事件列表 -->
      @if (!loading && events.length > 0) {
        <div class="todo-list-compact urgent-list">
          @for (event of events; track event.id) {
            <div class="todo-item-compact urgent-item" [attr.data-urgency]="event.urgencyLevel">
              <!-- 左侧紧急程度色条 -->
              <div class="urgency-indicator" [attr.data-urgency]="event.urgencyLevel"></div>
              
              <!-- 事件内容 -->
              <div class="task-content">
                <!-- 标题行 -->
                <div class="task-header">
                  <span class="task-title">{{ event.title }}</span>
                  <div class="task-badges">
                    <span class="badge badge-urgency" [attr.data-urgency]="event.urgencyLevel">
                      @if (event.urgencyLevel === 'critical') { 🔴 紧急 }
                      @else if (event.urgencyLevel === 'high') { 🟠 重要 }
                      @else { 🟡 注意 }
                    </span>
                    <span class="badge badge-event-type">
                      @if (event.eventType === 'review') { 对图 }
                      @else if (event.eventType === 'delivery') { 交付 }
                      @else if (event.eventType === 'phase_deadline') { {{ event.phaseName }} }
                      @else { {{ event.eventType }} }
                    </span>
                  </div>
                </div>
                
                <!-- 描述 -->
                <div class="task-description">
                  {{ event.description }}
                </div>
                
                <!-- 项目信息行 -->
                <div class="task-meta">
                  <span class="project-info">
                    <svg viewBox="0 0 24 24" width="12" height="12" fill="currentColor">
                      <path d="M10 20v-6h4v6h5v-8h3L12 3 2 12h3v8z"/>
                    </svg>
                    项目: {{ event.projectName }}
                  </span>
                  @if (event.designerName) {
                    <span class="designer-info">
                      <svg viewBox="0 0 24 24" width="12" height="12" fill="currentColor">
                        <path d="M12 12c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm0 2c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z"/>
                      </svg>
                      设计师: {{ event.designerName }}
                    </span>
                  }
                </div>
                
                <!-- 底部信息行 -->
                <div class="task-footer">
                  <span class="deadline-info" [class.overdue]="event.overdueDays && event.overdueDays > 0">
                    <svg viewBox="0 0 24 24" width="12" height="12" fill="currentColor">
                      <path d="M11.99 2C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67z"/>
                    </svg>
                    截止: {{ event.deadline | date:'MM-dd HH:mm' }}
                    @if (event.overdueDays && event.overdueDays > 0) {
                      <span class="overdue-label">(逾期{{ event.overdueDays }}天)</span>
                    }
                    @else if (event.overdueDays && event.overdueDays < 0) {
                      <span class="upcoming-label">(还剩{{ -event.overdueDays }}天)</span>
                    }
                    @else {
                      <span class="today-label">(今天)</span>
                    }
                  </span>
                  
                  <button 
                    class="btn-action btn-view-project" 
                    (click)="onViewProject(event.projectId)">
                    查看项目
                  </button>
                </div>
              </div>
            </div>
          }
        </div>
      }
    </div>
  `,
  styles: [`
    /* 组件样式继承父组件的样式类 */
    :host {
      display: block;
      width: 100%;
      height: 100%;
    }
  `]
})
export class UrgentEventsPanelComponent {
  // 输入属性
  @Input() events: UrgentEvent[] = [];
  @Input() loading: boolean = false;
  @Input() title: string = '紧急事件';
  @Input() subtitle: string = '自动计算的截止事件';
  @Input() loadingText: string = '计算紧急事件中...';
  @Input() emptyText: string = '暂无紧急事件';
  @Input() emptyHint: string = '所有项目时间节点正常 ✅';
  
  // 输出事件
  @Output() viewProject = new EventEmitter<string>();
  
  /**
   * 查看项目详情
   */
  onViewProject(projectId: string): void {
    this.viewProject.emit(projectId);
  }
}