import apiClient from './apiClient';

class PostService {
  /**
   * Get all posts for the current user
   * @param {Object} params - Query parameters
   * @param {boolean} params.published - Filter by published status
   * @returns {Promise} Promise that resolves to the posts data
   */
  async getAll(params = {}) {
    try {
      const response = await apiClient.get('/posts', { params });
      
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.log('📝 [Post] Retrieved posts:', response.data);
      }
      
      return response;
    } catch (error) {
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.error('📝 [Post] Get posts error:', error.response?.data || error.message);
      }
      throw error;
    }
  }

  /**
   * Generate a new post using AI asynchronously
   * @returns {Promise} Promise that resolves to the generated post content
   */
  async generate() {
    try {
      // Step 1: Start the generation process and get job ID
      const startResponse = await apiClient.post('/posts/generate', {});
      
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.log('📝 [Post] AI post generation started:', startResponse.data);
      }
      
      const jobId = startResponse.data.job_id;
      
      // Step 2: Poll for the result
      const generatedResult = await this.pollForJobResult(jobId);
      
      // Ensure we return a default value if content is null/undefined
      const finalContent = generatedResult.content !== undefined && generatedResult.content !== null ? generatedResult.content : "Generated content will appear here...";
      const finalImage = generatedResult.image || null;
      
      return { data: { success: true, content: finalContent, image: finalImage } };
    } catch (error) {
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.error('📝 [Post] Generate post error:', error.response?.data || error.message);
      }
      throw error;
    }
  }

  /**
   * Poll for job result
   * @param {string} jobId - Job ID to poll
   * @returns {Promise} Promise that resolves to the generated content
   */
  async pollForJobResult(jobId) {
    const pollInterval = 6000; // 6 seconds to match backend logs
    const maxAttempts = 60; // 6 minutes (60 * 6 seconds = 360 seconds)
    
    for (let attempt = 1; attempt <= maxAttempts; attempt++) {
      try {
        const response = await apiClient.get(`/posts/jobs/${jobId}`);
        const jobData = response.data;
        
        if (import.meta.env.VITE_NODE_ENV === 'development') {
          console.log(`📝 [Post] Job status check ${attempt}/${maxAttempts}:`, jobData);
        }
        
        switch (jobData.status) {
          case 'completed':
            // Log the raw job data for debugging
            if (import.meta.env.VITE_NODE_ENV === 'development') {
              console.log('📝 [Post] Raw job data:', jobData);
            }
            
            // Extract content and image data from the job result
            let content = '';
            let imageData = null;
            
            // Handle the new structure of the result
            if (jobData.content !== undefined) {
              content = jobData.content;
            }
            
            // Handle image data if it exists
            if (jobData.image_url !== undefined && jobData.image_url !== null) {
              imageData = jobData.image_url;
            } else if (jobData.has_image_data) {
              // Special marker for image data that exists but can't be displayed directly
              // If we have actual image data (possibly base64), we should handle it
              if (jobData.image_data) {
                // Check if it's base64 encoded data
                if (typeof jobData.image_data === 'string' && jobData.image_data.startsWith('data:image')) {
                  imageData = jobData.image_data; // Use the base64 data directly
                } else {
                  imageData = 'HAS_IMAGE_DATA_BUT_NOT_URL';
                }
              } else {
                imageData = 'HAS_IMAGE_DATA_BUT_NOT_URL';
              }
            }
            
            // If content is an array, take the first element
            if (Array.isArray(content)) {
              content = content[0] || '';
            }
            
            // Ensure we return the content even if it's an empty string
            return {
              content: content !== undefined ? content : '',
              image: imageData
            };
          case 'failed':
            throw new Error(jobData.error || 'Job failed');
          case 'processing':
          case 'pending':
            // Wait before next poll
            await new Promise(resolve => setTimeout(resolve, pollInterval));
            break;
          default:
            throw new Error(`Unknown job status: ${jobData.status}`);
        }
      } catch (error) {
        if (error.response?.status === 404) {
          throw new Error('Job not found');
        }
        throw error;
      }
    }
    
    // If we've reached here, we've exceeded the max attempts
    throw new Error('Job polling timed out after 6 minutes. Please check back later.');
  }

  /**
   * Create a new post
   * @param {Object} postData - Post data
   * @param {string} postData.social_account_id - Social account ID
   * @param {string} postData.text_content - Post text content
   * @param {string} [postData.image_content_url] - Image URL (optional)
   * @param {string} [postData.scheduled_at] - Scheduled time (optional)
   * @returns {Promise} Promise that resolves to the create post response
   */
  async create(postData) {
    try {
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.log('📝 [Post] Creating post with data:', postData);
      }
      
      const response = await apiClient.post('/posts', {
        social_account_id: postData.social_account_id,
        text_content: postData.text_content,
        image_content_url: postData.image_content_url,
        scheduled_at: postData.scheduled_at
      });
      
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.log('📝 [Post] Post created:', response.data);
      }
      
      return response;
    } catch (error) {
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.error('📝 [Post] Create post error:', error.response?.data || error.message);
        console.error('📝 [Post] Error details:', {
          status: error.response?.status,
          statusText: error.response?.statusText,
          headers: error.response?.headers,
          data: error.response?.data
        });
      }
      throw error;
    }
  }

  /**
   * Publish a post directly to social media
   * @param {Object} publishData - Publish data
   * @param {string} publishData.social_account_id - Social account ID
   * @param {string} publishData.text_content - Post text content
   * @returns {Promise} Promise that resolves to the publish post response
   */
  async publishDirect(publishData) {
    try {
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.log('📝 [Post] Publishing post directly to social media with data:', publishData);
      }
      
      const response = await apiClient.post('/posts/publish-direct', publishData);
      
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.log('📝 [Post] Post published directly:', response.data);
      }
      
      return response;
    } catch (error) {
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.error('📝 [Post] Publish post directly error:', error.response?.data || error.message);
        console.error('📝 [Post] Error details:', {
          status: error.response?.status,
          statusText: error.response?.statusText,
          headers: error.response?.headers,
          data: error.response?.data
        });
      }
      throw error;
    }
  }

  /**
   * Delete a post
   * @param {string} postId - Post ID
   * @returns {Promise} Promise that resolves to the delete post response
   */
  async delete(postId) {
    try {
      const response = await apiClient.delete(`/posts/${postId}`);
      
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.log('📝 [Post] Post deleted:', response.data);
      }
      
      return response;
    } catch (error) {
      if (import.meta.env.VITE_NODE_ENV === 'development') {
        console.error('📝 [Post] Delete post error:', error.response?.data || error.message);
      }
      throw error;
    }
  }
}

export default new PostService();