import { env } from '@/lib/env';

export class N8nService {
  private webhookUrl: string;
  private rollbackWebhookUrl: string;

  constructor() {
    // Use consistent webhook URLs without -test suffix
    this.webhookUrl = process.env.N8N_WEBHOOK_URL || 'https://brain.slm-lab.net/webhook/mission-created';
    this.rollbackWebhookUrl = process.env.N8N_ROLLBACK_WEBHOOK_URL || 'https://brain.slm-lab.net/webhook/mission-rollback';
  }

  async triggerMissionCreation(data: any): Promise<any> {
    try {
      console.log('Triggering n8n workflow with data:', JSON.stringify(data, null, 2));
      console.log('Using webhook URL:', this.webhookUrl);

      const response = await fetch(this.webhookUrl, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify(data),
      });

      if (!response.ok) {
        throw new Error(`HTTP error! status: ${response.status}`);
      }

      const result = await response.json();
      console.log('Received response from n8n:', JSON.stringify(result, null, 2));

      // Handle different response formats
      if (typeof result === 'string') {
        console.warn('Received string response from n8n:', result);
        return {
          success: false,
          error: 'Invalid response format from n8n',
          results: {
            leantimeProjectId: null,
            outlineCollectionId: null,
            rocketChatChannelId: null,
            giteaRepositoryUrl: null
          }
        };
      }

      // Extract results from the response
      const integrationResults = result.results || result;
      console.log('Integration results:', JSON.stringify(integrationResults, null, 2));

      return {
        success: true,
        results: {
          leantimeProjectId: integrationResults.leantimeProjectId?.toString() || null,
          outlineCollectionId: integrationResults.outlineCollectionId?.toString() || null,
          rocketChatChannelId: integrationResults.rocketChatChannelId?.toString() || null,
          giteaRepositoryUrl: integrationResults.giteaRepositoryUrl || null
        }
      };
    } catch (error) {
      console.error('Error triggering n8n workflow:', error);
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error',
        results: {
          leantimeProjectId: null,
          outlineCollectionId: null,
          rocketChatChannelId: null,
          giteaRepositoryUrl: null
        }
      };
    }
  }

  async triggerMissionRollback(data: any): Promise<any> {
    try {
      console.log('Triggering n8n rollback workflow with data:', JSON.stringify(data, null, 2));
      console.log('Using rollback webhook URL:', this.rollbackWebhookUrl);

      const response = await fetch(this.rollbackWebhookUrl, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify(data),
      });

      if (!response.ok) {
        throw new Error(`HTTP error! status: ${response.status}`);
      }

      const result = await response.json();
      console.log('Received response from n8n rollback:', JSON.stringify(result, null, 2));

      return {
        success: true,
        results: result
      };
    } catch (error) {
      console.error('Error triggering n8n rollback workflow:', error);
      return {
        success: false,
        error: error instanceof Error ? error.message : 'Unknown error'
      };
    }
  }
}