import { Router, Response } from 'express';
import { prisma } from '../index';
import { authenticate, AuthRequest } from '../middleware/auth';

const router = Router();

router.get('/me', authenticate, async (req: AuthRequest, res: Response) => {
  try {
    const user = await prisma.user.findUnique({
      where: { id: req.user!.id },
      select: {
        id: true,
        email: true,
        name: true,
        screenName: true,
        avatarUrl: true,
        unitPreference: true,
        createdAt: true
      }
    });

    if (!user) {
      return res.status(404).json({ error: 'User not found' });
    }

    res.json(user);
  } catch (error) {
    console.error('Get user error:', error);
    res.status(500).json({ error: 'Failed to get user' });
  }
});

router.put('/me', authenticate, async (req: AuthRequest, res: Response) => {
  try {
    const { name, screenName, avatarUrl, unitPreference } = req.body;

    const updated = await prisma.user.update({
      where: { id: req.user!.id },
      data: {
        name: name || undefined,
        screenName: screenName !== undefined ? screenName || null : undefined,
        avatarUrl: avatarUrl !== undefined ? avatarUrl || null : undefined,
        unitPreference: unitPreference || undefined
      },
      select: {
        id: true,
        email: true,
        name: true,
        screenName: true,
        avatarUrl: true,
        unitPreference: true,
        createdAt: true
      }
    });

    res.json(updated);
  } catch (error) {
    console.error('Update user error:', error);
    res.status(500).json({ error: 'Failed to update user' });
  }
});

router.get('/me/location-history', authenticate, async (req: AuthRequest, res: Response) => {
  try {
    const locations = await prisma.locationHistory.findMany({
      where: { userId: req.user!.id },
      include: {
        game: {
          select: { id: true, name: true }
        }
      },
      orderBy: { recordedAt: 'desc' }
    });

    const games = await prisma.game.findMany({
      where: {
        teams: {
          some: {
            members: {
              some: { userId: req.user!.id }
            }
          }
        }
      },
      select: { id: true, name: true }
    });

    const locationByGame = games.map(game => {
      const gameLocations = locations.filter(l => l.gameId === game.id);
      return {
        game: game,
        locations: gameLocations,
        locationCount: gameLocations.length
      };
    }).filter(g => g.locationCount > 0);

    res.json({
      totalLocations: locations.length,
      byGame: locationByGame
    });
  } catch (error) {
    console.error('Get location history error:', error);
    res.status(500).json({ error: 'Failed to get location history' });
  }
});

router.get('/me/games', authenticate, async (req: AuthRequest, res: Response) => {
  try {
    const memberships = await prisma.teamMember.findMany({
      where: { userId: req.user!.id },
      include: {
        team: {
          include: {
            game: {
              select: {
                id: true,
                name: true,
                status: true,
                startDate: true,
                locationLat: true,
                locationLng: true,
                gameMasterId: true,
                gameMaster: { select: { name: true } }
              }
            },
            teamRoutes: {
              include: {
                route: {
                  include: {
                    routeLegs: {
                      orderBy: { sequenceNumber: 'asc' }
                    }
                  }
                }
              }
            },
            photoSubmissions: true
          }
        }
      }
    });

    const gamesWithDetails = memberships.map(m => {
      const team = m.team;
      const game = team.game;
      const teamRoute = team.teamRoutes[0];
      const route = teamRoute?.route;
      const photoSubmissions = team.photoSubmissions;

      const routeLegs = route?.routeLegs || [];
      const proofLocations = routeLegs.filter(leg => 
        photoSubmissions.some(p => p.routeLegId === leg.id)
      );

      let totalDistance = 0;
      if (game.locationLat && game.locationLng) {
        let prevLat = game.locationLat;
        let prevLng = game.locationLng;
        for (const leg of routeLegs) {
          if (leg.locationLat && leg.locationLng) {
            const R = 6371;
            const dLat = (leg.locationLat - prevLat) * Math.PI / 180;
            const dLng = (leg.locationLng - prevLng) * Math.PI / 180;
            const a = Math.sin(dLat/2) * Math.sin(dLat/2) +
              Math.cos(prevLat * Math.PI / 180) * Math.cos(leg.locationLat * Math.PI / 180) *
              Math.sin(dLng/2) * Math.sin(dLng/2);
            const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
            totalDistance += R * c;
            prevLat = leg.locationLat;
            prevLng = leg.locationLng;
          }
        }
      }

      return {
        gameId: game.id,
        gameName: game.name,
        gameStatus: game.status,
        gameMaster: game.gameMaster.name,
        startDate: game.startDate,
        teamId: team.id,
        teamName: team.name,
        teamStatus: team.status,
        routeId: route?.id || null,
        routeName: route?.name || null,
        routeColor: route?.color || null,
        totalLegs: routeLegs.length,
        totalDistance: Math.round(totalDistance * 100) / 100,
        proofLocations: proofLocations.map(leg => ({
          legNumber: leg.sequenceNumber,
          description: leg.description,
          locationLat: leg.locationLat,
          locationLng: leg.locationLng,
          hasPhotoProof: photoSubmissions.some(p => p.routeLegId === leg.id)
        }))
      };
    });

    res.json(gamesWithDetails);
  } catch (error) {
    console.error('Get user games error:', error);
    res.status(500).json({ error: 'Failed to get user games' });
  }
});

router.delete('/me/location-data', authenticate, async (req: AuthRequest, res: Response) => {
  try {
    await prisma.locationHistory.deleteMany({
      where: { userId: req.user!.id }
    });

    res.json({ message: 'Location data deleted' });
  } catch (error) {
    console.error('Delete location data error:', error);
    res.status(500).json({ error: 'Failed to delete location data' });
  }
});

router.delete('/me/account', authenticate, async (req: AuthRequest, res: Response) => {
  try {
    await prisma.user.delete({
      where: { id: req.user!.id }
    });

    res.json({ message: 'Account deleted' });
  } catch (error) {
    console.error('Delete account error:', error);
    res.status(500).json({ error: 'Failed to delete account' });
  }
});

export default router;