import { NextResponse } from 'next/server';
import { getServerSession } from 'next-auth';
import { authOptions } from "@/app/api/auth/options";
import { prisma } from '@/lib/prisma';
import { logger } from '@/lib/logger';

/**
 * POST /api/missions/[missionId]/close
 * 
 * Closes a mission by calling N8N webhook to close it in external services
 * and marking it as closed in the database.
 */
export async function POST(
  request: Request,
  props: { params: Promise<{ missionId: string }> }
) {
  const params = await props.params;
  
  try {
    const session = await getServerSession(authOptions);
    if (!session?.user) {
      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
    }

    const { missionId } = params;
    if (!missionId) {
      return NextResponse.json({ error: 'Mission ID is required' }, { status: 400 });
    }

    // Get the mission with all details needed for N8N
    const mission = await prisma.mission.findUnique({
      where: { id: missionId },
      include: {
        missionUsers: {
          include: {
            user: true
          }
        }
      }
    });

    if (!mission) {
      return NextResponse.json({ error: 'Mission not found' }, { status: 404 });
    }

    // Check if user has permission (creator or admin)
    const isCreator = mission.creatorId === session.user.id;
    const userRoles = Array.isArray(session.user.role) ? session.user.role : [];
    const isAdmin = userRoles.includes('admin') || userRoles.includes('ADMIN');
    
    if (!isCreator && !isAdmin) {
      return NextResponse.json({ error: 'Forbidden' }, { status: 403 });
    }

    // Check if already closed
    if ((mission as any).isClosed) {
      return NextResponse.json({ error: 'Mission is already closed' }, { status: 400 });
    }

    // Extract repo name from giteaRepositoryUrl if present
    let repoName = '';
    if (mission.giteaRepositoryUrl) {
      try {
        const url = new URL(mission.giteaRepositoryUrl);
        const pathParts = url.pathname.split('/').filter(Boolean);
        repoName = pathParts[pathParts.length - 1] || '';
        logger.debug('Extracted repo name from URL', { repoName });
      } catch (error) {
        const match = mission.giteaRepositoryUrl.match(/\/([^\/]+)\/?$/);
        repoName = match ? match[1] : '';
      }
    }

    // Prepare data for N8N webhook (same format as deletion)
    const n8nCloseData = {
      missionId: mission.id,
      name: mission.name,
      repoName: repoName,
      leantimeProjectId: mission.leantimeProjectId || 0,
      documentationCollectionId: mission.outlineCollectionId || '',
      rocketchatChannelId: mission.rocketChatChannelId || '',
      giteaRepositoryUrl: mission.giteaRepositoryUrl,
      outlineCollectionId: mission.outlineCollectionId,
      rocketChatChannelId: mission.rocketChatChannelId,
      penpotProjectId: mission.penpotProjectId,
      action: 'close' // Indicate this is a close action, not delete
    };

    logger.debug('Calling N8N NeahMissionClose webhook', {
      missionId: mission.id,
      missionName: mission.name,
      hasRepoName: !!repoName
    });

    // Call N8N webhook
    const webhookUrl = process.env.N8N_CLOSE_MISSION_WEBHOOK_URL || 'https://brain.slm-lab.net/webhook/NeahMissionClose';
    const apiKey = process.env.N8N_API_KEY || '';

    const response = await fetch(webhookUrl, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'x-api-key': apiKey
      },
      body: JSON.stringify(n8nCloseData),
    });

    logger.debug('N8N close webhook response', { status: response.status });

    if (!response.ok) {
      const errorText = await response.text();
      logger.error('N8N close webhook error', {
        status: response.status,
        error: errorText.substring(0, 200)
      });
      // Continue with closing even if N8N fails (non-blocking)
      logger.warn('Continuing with mission close despite N8N error');
    }

    // Mark mission as closed in database
    // Using 'as any' until prisma generate is run
    const updatedMission = await (prisma.mission as any).update({
      where: { id: missionId },
      data: {
        isClosed: true,
        closedAt: new Date()
      }
    });

    logger.debug('Mission closed successfully', {
      missionId: updatedMission.id,
      closedAt: updatedMission.closedAt
    });

    return NextResponse.json({
      success: true,
      message: 'Mission closed successfully',
      mission: {
        id: updatedMission.id,
        name: updatedMission.name,
        isClosed: updatedMission.isClosed,
        closedAt: updatedMission.closedAt
      }
    });

  } catch (error) {
    logger.error('Error closing mission', {
      error: error instanceof Error ? error.message : String(error),
      missionId: params.missionId
    });
    return NextResponse.json(
      { error: 'Failed to close mission', details: error instanceof Error ? error.message : String(error) },
      { status: 500 }
    );
  }
}