// Job Folder Integration Module
// This module handles folder creation and share link capture after PocketBase record creation
// Uses the same Graph API token from the server to avoid re-authentication

const { DRIVE_ID, PARENT_ITEM_ID } = require('./config');

/**
 * Creates a job folder structure in OneDrive/SharePoint and returns the share link
 * @param {string} accessToken - Graph API access token (from server's token flow)
 * @param {string} jobNumber - Job number (e.g., "12345")
 * @param {string} jobFullName - Full job name calculated from form data
 * @returns {Promise<Object>} Result with folder IDs and share link
 */
async function createJobFolderAndGetLink(accessToken, jobNumber, jobFullName) {
  try {
    // 1) Create main folder under configured parent
    const mainFolderName = `${jobNumber} - ${jobFullName}`;
    const createFolderEndpoint = `https://graph.microsoft.com/v1.0/drives/${DRIVE_ID}/items/${PARENT_ITEM_ID}/children`;
    
    console.log(`[Job Folder Integration] Creating main folder: ${mainFolderName}`);
    const folderResp = await fetch(createFolderEndpoint, {
      method: 'POST',
      headers: { 
        'Authorization': `Bearer ${accessToken}`, 
        'Content-Type': 'application/json' 
      },
      body: JSON.stringify({ 
        name: mainFolderName, 
        folder: {}, 
        "@microsoft.graph.conflictBehavior": "rename" 
      })
    });
    
    const folderData = await folderResp.json();
    console.log(`[Job Folder Integration] Create folder response:`, { 
      status: folderResp.status, 
      folderId: folderData.id,
      folderName: folderData.name 
    });
    
    if (!folderResp.ok) {
      throw new Error(`Create main folder failed: ${JSON.stringify(folderData)}`);
    }
    
    const mainFolderId = folderData.id;

    // 2) Create subfolder "Managers Info"
    console.log('[Job Folder Integration] Creating subfolder: Managers Info');
    const subFolderResp = await fetch(
      `https://graph.microsoft.com/v1.0/drives/${DRIVE_ID}/items/${mainFolderId}/children`, 
      {
        method: 'POST',
        headers: { 
          'Authorization': `Bearer ${accessToken}`, 
          'Content-Type': 'application/json' 
        },
        body: JSON.stringify({ 
          name: 'Managers Info', 
          folder: {}, 
          "@microsoft.graph.conflictBehavior": "rename" 
        })
      }
    );
    
    const subFolderData = await subFolderResp.json();
    console.log('[Job Folder Integration] Create subfolder response:', { 
      status: subFolderResp.status, 
      subfolderId: subFolderData.id 
    });
    
    if (!subFolderResp.ok) {
      throw new Error(`Create subfolder failed: ${JSON.stringify(subFolderData)}`);
    }
    
    const subFolderId = subFolderData.id;

    // 3) Create share link for the main folder
    console.log('[Job Folder Integration] Creating share link for main folder');
    const shareResp = await fetch(
      `https://graph.microsoft.com/v1.0/drives/${DRIVE_ID}/items/${mainFolderId}/createLink`, 
      {
        method: 'POST',
        headers: { 
          'Authorization': `Bearer ${accessToken}`, 
          'Content-Type': 'application/json' 
        },
        body: JSON.stringify({ 
          type: 'view', 
          scope: 'organization' 
        })
      }
    );
    
    const shareData = await shareResp.json();
    console.log('[Job Folder Integration] Share link response:', { 
      status: shareResp.status, 
      hasLink: !!shareData.link?.webUrl 
    });

    if (!shareResp.ok) {
      throw new Error(`Create share link failed: ${JSON.stringify(shareData)}`);
    }

    const shareLink = shareData.link && shareData.link.webUrl ? shareData.link.webUrl : null;

    console.log(`[Job Folder Integration] ✓ Successfully created folder structure and share link`);
    console.log(`[Job Folder Integration] Share link: ${shareLink}`);

    return {
      success: true,
      mainFolderId,
      mainFolderName,
      subFolderId,
      shareLink,
      folderPath: mainFolderName
    };

  } catch (error) {
    console.error('[Job Folder Integration] Error in createJobFolderAndGetLink:', error);
    throw error;
  }
}

module.exports = {
  createJobFolderAndGetLink
};