import { invoke } from '@tauri-apps/api/core';
import {
  VideoGenerationTask,
  VideoGenerationQueryParams,
  CreateVideoGenerationRequest,
  VideoGenerationAPI,
} from '../types/videoGeneration';
import { Model, ModelPhoto, PhotoType } from '../types/model';

/**
 * 视频生成服务
 * 提供视频生成相关的API调用功能
 */
class VideoGenerationService implements VideoGenerationAPI {
  /**
   * 创建视频生成任务
   */
  async createVideoGenerationTask(request: CreateVideoGenerationRequest): Promise<VideoGenerationTask> {
    try {
      const task = await invoke<VideoGenerationTask>('create_video_generation_task', {
        request
      });
      return task;
    } catch (error) {
      console.error('创建视频生成任务失败:', error);
      throw new Error(`创建视频生成任务失败: ${error}`);
    }
  }

  /**
   * 执行视频生成任务
   */
  async executeVideoGenerationTask(taskId: string): Promise<VideoGenerationTask> {
    try {
      const task = await invoke<VideoGenerationTask>('execute_video_generation_task', {
        taskId
      });
      return task;
    } catch (error) {
      console.error('执行视频生成任务失败:', error);
      throw new Error(`执行视频生成任务失败: ${error}`);
    }
  }

  /**
   * 获取视频生成任务
   */
  async getVideoGenerationTask(taskId: string): Promise<VideoGenerationTask | null> {
    try {
      const task = await invoke<VideoGenerationTask | null>('get_video_generation_task', {
        taskId
      });
      return task;
    } catch (error) {
      console.error('获取视频生成任务失败:', error);
      throw new Error(`获取视频生成任务失败: ${error}`);
    }
  }

  /**
   * 获取视频生成任务列表
   */
  async getVideoGenerationTasks(params?: VideoGenerationQueryParams): Promise<VideoGenerationTask[]> {
    try {
      const tasks = await invoke<VideoGenerationTask[]>('get_video_generation_tasks', {
        params: params || {}
      });
      return tasks;
    } catch (error) {
      console.error('获取视频生成任务列表失败:', error);
      throw new Error(`获取视频生成任务列表失败: ${error}`);
    }
  }

  /**
   * 取消视频生成任务
   */
  async cancelVideoGenerationTask(taskId: string): Promise<void> {
    try {
      await invoke('cancel_video_generation_task', {
        taskId
      });
    } catch (error) {
      console.error('取消视频生成任务失败:', error);
      throw new Error(`取消视频生成任务失败: ${error}`);
    }
  }

  /**
   * 删除视频生成任务
   */
  async deleteVideoGenerationTask(taskId: string): Promise<void> {
    try {
      await invoke('delete_video_generation_task', {
        taskId
      });
    } catch (error) {
      console.error('删除视频生成任务失败:', error);
      throw new Error(`删除视频生成任务失败: ${error}`);
    }
  }

  /**
   * 重试视频生成任务
   */
  async retryVideoGenerationTask(taskId: string): Promise<VideoGenerationTask> {
    try {
      const task = await invoke<VideoGenerationTask>('retry_video_generation_task', {
        taskId
      });
      return task;
    } catch (error) {
      console.error('重试视频生成任务失败:', error);
      throw new Error(`重试视频生成任务失败: ${error}`);
    }
  }

  /**
   * 获取模特详情（包含照片）
   */
  async getModelDetailWithPhotos(modelId: string): Promise<Model | null> {
    try {
      const model = await invoke<Model | null>('get_model_detail_with_photos', {
        modelId
      });
      return model;
    } catch (error) {
      console.error('获取模特详情失败:', error);
      throw new Error(`获取模特详情失败: ${error}`);
    }
  }

  /**
   * 批量上传模特照片
   */
  async batchUploadModelPhotos(
    modelId: string,
    filePaths: string[],
    photoType: PhotoType,
    description?: string,
    tags?: string[]
  ): Promise<ModelPhoto[]> {
    try {
      const photos = await invoke<ModelPhoto[]>('batch_upload_model_photos', {
        modelId,
        filePaths,
        photoType,
        description,
        tags
      });
      return photos;
    } catch (error) {
      console.error('批量上传模特照片失败:', error);
      throw new Error(`批量上传模特照片失败: ${error}`);
    }
  }

  /**
   * 获取模特视频生成统计
   */
  async getModelVideoGenerationStatistics(modelId: string) {
    try {
      const stats = await invoke('get_model_video_generation_statistics', {
        modelId
      });
      return stats;
    } catch (error) {
      console.error('获取模特视频生成统计失败:', error);
      throw new Error(`获取模特视频生成统计失败: ${error}`);
    }
  }

  /**
   * 创建并执行视频生成任务（一步完成）
   */
  async createAndExecuteVideoGeneration(request: CreateVideoGenerationRequest): Promise<VideoGenerationTask> {
    try {
      // 1. 创建任务
      const task = await this.createVideoGenerationTask(request);
      
      // 2. 执行任务
      const executedTask = await this.executeVideoGenerationTask(task.id);
      
      return executedTask;
    } catch (error) {
      console.error('创建并执行视频生成任务失败:', error);
      throw error;
    }
  }

  /**
   * 轮询任务状态直到完成
   */
  async pollTaskUntilComplete(
    taskId: string,
    onProgress?: (task: VideoGenerationTask) => void,
    maxAttempts: number = 60,
    intervalMs: number = 2000
  ): Promise<VideoGenerationTask> {
    let attempts = 0;
    
    while (attempts < maxAttempts) {
      try {
        const task = await this.getVideoGenerationTask(taskId);
        
        if (!task) {
          throw new Error('任务不存在');
        }

        if (onProgress) {
          onProgress(task);
        }

        // 检查任务是否完成
        if (task.status === 'Completed' || task.status === 'Failed' || task.status === 'Cancelled') {
          return task;
        }

        // 等待一段时间后继续轮询
        await new Promise(resolve => setTimeout(resolve, intervalMs));
        attempts++;
      } catch (error) {
        console.error('轮询任务状态失败:', error);
        attempts++;
        
        if (attempts >= maxAttempts) {
          throw new Error(`轮询任务状态超时: ${error}`);
        }
        
        // 等待一段时间后重试
        await new Promise(resolve => setTimeout(resolve, intervalMs));
      }
    }

    throw new Error('轮询任务状态超时');
  }
}

// 导出单例实例
export const videoGenerationService = new VideoGenerationService();
export default videoGenerationService;