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

interface ReferenceImage {
  id: string;
  name: string;
  url: string;
  categories: string[];
  description?: string;
  tags?: string[];
  uploadDate: Date;
}

interface SelectedFile {
  file: File;
  name: string;
  size: number;
  preview: string;
}

interface AIQuestion {
  id: string;
  title: string;
  description: string;
  example: string;
  icon: string;
  category?: string;
}

@Component({
  selector: 'app-reference-image-manager',
  standalone: true,
  imports: [CommonModule, FormsModule],
  templateUrl: './reference-image-manager.component.html',
  styleUrls: ['./reference-image-manager.component.scss']
})
export class ReferenceImageManagerComponent implements OnInit {
  @Input() projectId: string = '';
  @Output() imagesUpdated = new EventEmitter<ReferenceImage[]>();

  // 视图状态
  viewMode: 'grid' | 'list' = 'grid';
  activeFilter: string = 'all';
  selectedImageId: string | null = null;

  // 数据
  referenceImages: ReferenceImage[] = [];
  filteredImages: ReferenceImage[] = [];

  // 对话框状态
  showUploadDialog = false;
  showEditDialog = false;
  showAIDialog = false;
  showPreviewDialog = false;

  // 上传相关
  isDragging = false;
  selectedFiles: SelectedFile[] = [];

  // 编辑相关
  editingImage: ReferenceImage | null = null;
  newTag = '';

  // AI助手相关
  aiImage: ReferenceImage | null = null;
  customQuestion = '';

  // AI建议追问（参考图多的情况）
  aiQuestionsMultiple: AIQuestion[] = [
    {
      id: 'q1',
      title: '明确灯光参考',
      description: '当有多张参考图时，需要明确哪张图主要用于灯光布局参考',
      example: '请问这几张参考图中，哪一张是您想要的灯光效果？主要参考它的主光源布置还是氛围灯效果？',
      icon: 'icon-lightbulb',
      category: 'lighting'
    },
    {
      id: 'q2',
      title: '区分软装参考',
      description: '识别哪些图片用于软装家具的参考',
      example: '这些参考图中，哪几张是用于软装搭配的？具体是参考家具的款式、颜色还是整体搭配方案？',
      icon: 'icon-couch',
      category: 'furniture'
    },
    {
      id: 'q3',
      title: '确认氛围感觉',
      description: '明确整体氛围和感觉的主要参考图',
      example: '您希望达到的整体氛围感觉，主要是参考哪张图？是温馨、现代还是其他风格？',
      icon: 'icon-stars',
      category: 'atmosphere'
    },
    {
      id: 'q4',
      title: '结构布局说明',
      description: '确认空间结构和布局的参考依据',
      example: '空间的布局结构，是按照哪张图来的？需要完全一致还是可以适当调整？',
      icon: 'icon-cube',
      category: 'structure'
    }
  ];

  // AI建议追问（参考图少的情况）
  aiQuestionsFew: AIQuestion[] = [
    {
      id: 'q5',
      title: '细化感觉来源',
      description: '深入了解客户喜欢这张图的具体原因',
      example: '您喜欢这张图的哪些方面？是整体的色调、光线效果、还是家具的搭配？能具体说说吗？',
      icon: 'icon-heart',
    },
    {
      id: 'q6',
      title: '明确重点元素',
      description: '确认图片中最重要的参考元素',
      example: '这张图里，您最想要的是什么？比如墙面的颜色、地板材质、还是家具的款式？请按重要性排个序。',
      icon: 'icon-target',
    },
    {
      id: 'q7',
      title: '探索细节要求',
      description: '挖掘客户对细节的具体期望',
      example: '关于这张图的细节，比如灯具的样式、窗帘的材质、墙面的装饰等，您有特别的偏好吗？',
      icon: 'icon-zoom-in',
    },
    {
      id: 'q8',
      title: '确认可调整空间',
      description: '了解哪些地方可以灵活调整',
      example: '如果完全按这张图来可能有些困难，哪些元素是必须保留的？哪些可以根据实际情况调整？',
      icon: 'icon-sliders',
    }
  ];

  previewImageUrl = '';

  ngOnInit() {
    this.loadReferenceImages();
  }

  // 加载参考图数据
  loadReferenceImages() {
    // 模拟数据，实际应该从服务器加载
    this.referenceImages = [
      {
        id: '1',
        name: '客厅灯光参考.jpg',
        url: document.baseURI+'/assets/images/portfolio-1.svg',
        categories: ['lighting', 'atmosphere'],
        description: '参考主灯和氛围灯的布局，营造温馨的晚间氛围',
        tags: ['吊灯', '暖光', '氛围灯'],
        uploadDate: new Date('2024-01-15')
      },
      {
        id: '2',
        name: '软装搭配方案.jpg',
        url: document.baseURI+'/assets/images/portfolio-2.svg',
        categories: ['furniture'],
        description: '参考沙发、茶几的款式和颜色搭配',
        tags: ['现代简约', '布艺沙发', '木质茶几'],
        uploadDate: new Date('2024-01-16')
      },
      {
        id: '3',
        name: '整体效果图.jpg',
        url: document.baseURI+'/assets/images/portfolio-3.svg',
        categories: [],
        description: '',
        tags: [],
        uploadDate: new Date('2024-01-17')
      }
    ];
    this.filteredImages = [...this.referenceImages];
  }

  // 分类筛选
  filterByCategory(category: string) {
    this.activeFilter = category;
    if (category === 'all') {
      this.filteredImages = [...this.referenceImages];
    } else if (category === 'uncategorized') {
      this.filteredImages = this.referenceImages.filter(img => 
        !img.categories || img.categories.length === 0
      );
    } else {
      this.filteredImages = this.referenceImages.filter(img => 
        img.categories && img.categories.includes(category)
      );
    }
  }

  // 获取分类数量
  getCategoryCount(category: string): number {
    return this.referenceImages.filter(img => 
      img.categories && img.categories.includes(category)
    ).length;
  }

  // 获取未分类数量
  getUncategorizedCount(): number {
    return this.referenceImages.filter(img => 
      !img.categories || img.categories.length === 0
    ).length;
  }

  // 获取分类标签文本
  getCategoryLabel(category: string): string {
    const labels: { [key: string]: string } = {
      'lighting': '灯光',
      'furniture': '软装',
      'atmosphere': '氛围',
      'structure': '结构'
    };
    return labels[category] || category;
  }

  // 获取筛选器标签
  getFilterLabel(): string {
    const labels: { [key: string]: string } = {
      'all': '全部',
      'lighting': '灯光参考',
      'furniture': '软装参考',
      'atmosphere': '氛围参考',
      'structure': '结构参考',
      'uncategorized': '未分类'
    };
    return labels[this.activeFilter] || '';
  }

  // 选择图片
  selectImage(image: ReferenceImage) {
    this.selectedImageId = image.id;
  }

  // 打开上传对话框
  openUploadDialog() {
    this.showUploadDialog = true;
    this.selectedFiles = [];
  }

  // 关闭上传对话框
  closeUploadDialog() {
    this.showUploadDialog = false;
    this.selectedFiles = [];
  }

  // 文件拖拽
  onDragOver(event: DragEvent) {
    event.preventDefault();
    this.isDragging = true;
  }

  onDragLeave(event: DragEvent) {
    event.preventDefault();
    this.isDragging = false;
  }

  onDrop(event: DragEvent) {
    event.preventDefault();
    this.isDragging = false;
    
    const files = event.dataTransfer?.files;
    if (files) {
      this.processFiles(files);
    }
  }

  // 文件选择
  onFileSelected(event: Event) {
    const input = event.target as HTMLInputElement;
    if (input.files) {
      this.processFiles(input.files);
    }
  }

  // 处理文件
  processFiles(files: FileList) {
    for (let i = 0; i < files.length; i++) {
      const file = files[i];
      if (file.type.startsWith('image/')) {
        const reader = new FileReader();
        reader.onload = (e) => {
          this.selectedFiles.push({
            file: file,
            name: file.name,
            size: file.size,
            preview: e.target?.result as string
          });
        };
        reader.readAsDataURL(file);
      }
    }
  }

  // 移除选中的文件
  removeSelectedFile(index: number) {
    this.selectedFiles.splice(index, 1);
  }

  // 格式化文件大小
  formatFileSize(bytes: number): string {
    if (bytes < 1024) return bytes + ' B';
    if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(2) + ' KB';
    return (bytes / (1024 * 1024)).toFixed(2) + ' MB';
  }

  // 上传文件
  uploadFiles() {
    // 模拟上传
    this.selectedFiles.forEach(file => {
      const newImage: ReferenceImage = {
        id: Date.now().toString() + Math.random(),
        name: file.name,
        url: file.preview,
        categories: [],
        description: '',
        tags: [],
        uploadDate: new Date()
      };
      this.referenceImages.unshift(newImage);
    });
    
    this.filteredImages = [...this.referenceImages];
    this.imagesUpdated.emit(this.referenceImages);
    this.closeUploadDialog();
  }

  // 编辑图片
  editImage(image: ReferenceImage, event: Event) {
    event.stopPropagation();
    this.editingImage = { ...image };
    this.showEditDialog = true;
  }

  // 关闭编辑对话框
  closeEditDialog() {
    this.showEditDialog = false;
    this.editingImage = null;
  }

  // 判断分类是否选中
  isCategorySelected(category: string): boolean {
    return this.editingImage?.categories?.includes(category) || false;
  }

  // 切换分类
  toggleCategory(category: string) {
    if (!this.editingImage) return;
    
    if (!this.editingImage.categories) {
      this.editingImage.categories = [];
    }

    const index = this.editingImage.categories.indexOf(category);
    if (index > -1) {
      this.editingImage.categories.splice(index, 1);
    } else {
      this.editingImage.categories.push(category);
    }
  }

  // 添加标签
  addTag() {
    if (!this.editingImage || !this.newTag.trim()) return;
    
    if (!this.editingImage.tags) {
      this.editingImage.tags = [];
    }

    if (!this.editingImage.tags.includes(this.newTag.trim())) {
      this.editingImage.tags.push(this.newTag.trim());
    }
    this.newTag = '';
  }

  // 移除标签
  removeTag(index: number) {
    if (this.editingImage?.tags) {
      this.editingImage.tags.splice(index, 1);
    }
  }

  // 保存编辑
  saveEdit() {
    if (!this.editingImage) return;

    const index = this.referenceImages.findIndex(img => img.id === this.editingImage!.id);
    if (index > -1) {
      this.referenceImages[index] = { ...this.editingImage };
      this.filterByCategory(this.activeFilter);
      this.imagesUpdated.emit(this.referenceImages);
    }

    this.closeEditDialog();
  }

  // 删除图片
  deleteImage(image: ReferenceImage, event: Event) {
    event.stopPropagation();
    
    if (confirm(`确定要删除 "${image.name}" 吗？`)) {
      this.referenceImages = this.referenceImages.filter(img => img.id !== image.id);
      this.filterByCategory(this.activeFilter);
      this.imagesUpdated.emit(this.referenceImages);
    }
  }

  // 打开AI助手
  openAIAssistant(image: ReferenceImage, event: Event) {
    event.stopPropagation();
    this.aiImage = { ...image };
    this.showAIDialog = true;
  }

  // 关闭AI对话框
  closeAIDialog() {
    this.showAIDialog = false;
    this.aiImage = null;
    this.customQuestion = '';
  }

  // 应用AI建议的问题
  applyAIQuestion(question: AIQuestion) {
    // 这里可以实现将问题发送给客户的逻辑
    console.log('应用AI问题:', question);
    
    // 如果问题有关联的分类，自动添加到图片分类中
    if (question.category && this.aiImage) {
      if (!this.aiImage.categories) {
        this.aiImage.categories = [];
      }
      if (!this.aiImage.categories.includes(question.category)) {
        this.aiImage.categories.push(question.category);
      }
    }

    alert(`已将追问发送给客户：\n\n${question.example}`);
  }

  // 发送自定义问题
  sendCustomQuestion() {
    if (!this.customQuestion.trim()) {
      alert('请输入追问内容');
      return;
    }

    // 这里实现发送自定义问题的逻辑
    console.log('发送自定义问题:', this.customQuestion);
    alert(`已将追问发送给客户：\n\n${this.customQuestion}`);
    this.customQuestion = '';
  }

  // 应用AI建议并编辑
  applyAISuggestionsAndEdit() {
    if (this.aiImage) {
      this.closeAIDialog();
      this.editImage(this.aiImage, new Event('click'));
    }
  }

  // 预览图片
  previewImage(image: ReferenceImage) {
    this.previewImageUrl = image.url;
    this.showPreviewDialog = true;
  }

  // 关闭预览
  closePreviewDialog() {
    this.showPreviewDialog = false;
    this.previewImageUrl = '';
  }
}