/**
 * ConsumoObraController - Controller de consumos de materiales
 *
 * Endpoints REST para registro de consumos de materiales por obra.
 *
 * @module Inventory
 */

import { Router, Request, Response, NextFunction } from 'express';
import { DataSource } from 'typeorm';
import {
  ConsumoObraService,
  CreateConsumoDto,
  ConsumoFilters,
} from '../services/consumo-obra.service';
import { AuthMiddleware } from '../../auth/middleware/auth.middleware';
import { AuthService } from '../../auth/services/auth.service';
import { ConsumoObra } from '../entities/consumo-obra.entity';
import { User } from '../../core/entities/user.entity';
import { Tenant } from '../../core/entities/tenant.entity';
import { RefreshToken } from '../../auth/entities/refresh-token.entity';

interface ServiceContext {
  tenantId: string;
  userId?: string;
}

/**
 * Crear router de consumos
 */
export function createConsumoObraController(dataSource: DataSource): Router {
  const router = Router();

  // Repositorios
  const consumoRepository = dataSource.getRepository(ConsumoObra);
  const userRepository = dataSource.getRepository(User);
  const tenantRepository = dataSource.getRepository(Tenant);
  const refreshTokenRepository = dataSource.getRepository(RefreshToken);

  // Servicios
  const consumoService = new ConsumoObraService(consumoRepository);
  const authService = new AuthService(userRepository, tenantRepository, refreshTokenRepository as any);
  const authMiddleware = new AuthMiddleware(authService, dataSource);

  // Helper para crear contexto de servicio
  const getContext = (req: Request): ServiceContext => {
    if (!req.tenantId) {
      throw new Error('Tenant ID is required');
    }
    return {
      tenantId: req.tenantId,
      userId: req.user?.sub,
    };
  };

  /**
   * GET /consumos
   * Listar consumos con filtros
   */
  router.get('/', authMiddleware.authenticate, async (req: Request, res: Response, next: NextFunction): Promise<void> => {
    try {
      const tenantId = req.tenantId;
      if (!tenantId) {
        res.status(400).json({ error: 'Bad Request', message: 'Tenant ID required' });
        return;
      }

      const page = parseInt(req.query.page as string) || 1;
      const limit = Math.min(parseInt(req.query.limit as string) || 20, 100);

      const filters: ConsumoFilters = {
        fraccionamientoId: req.query.fraccionamientoId as string,
        loteId: req.query.loteId as string,
        conceptoId: req.query.conceptoId as string,
        productId: req.query.productId as string,
        dateFrom: req.query.dateFrom ? new Date(req.query.dateFrom as string) : undefined,
        dateTo: req.query.dateTo ? new Date(req.query.dateTo as string) : undefined,
      };

      const result = await consumoService.findWithFilters(getContext(req), filters, page, limit);

      res.status(200).json({
        success: true,
        data: result.data,
        pagination: {
          total: result.total,
          page: result.page,
          limit: result.limit,
          totalPages: result.totalPages,
        },
      });
    } catch (error) {
      next(error);
    }
  });

  /**
   * GET /consumos/stats/:fraccionamientoId
   * Obtener estadísticas de consumos por fraccionamiento
   */
  router.get('/stats/:fraccionamientoId', authMiddleware.authenticate, async (req: Request, res: Response, next: NextFunction): Promise<void> => {
    try {
      const tenantId = req.tenantId;
      if (!tenantId) {
        res.status(400).json({ error: 'Bad Request', message: 'Tenant ID required' });
        return;
      }

      const stats = await consumoService.getStats(getContext(req), req.params.fraccionamientoId);
      res.status(200).json({ success: true, data: stats });
    } catch (error) {
      next(error);
    }
  });

  /**
   * GET /consumos/:id
   * Obtener consumo por ID
   */
  router.get('/:id', authMiddleware.authenticate, async (req: Request, res: Response, next: NextFunction): Promise<void> => {
    try {
      const tenantId = req.tenantId;
      if (!tenantId) {
        res.status(400).json({ error: 'Bad Request', message: 'Tenant ID required' });
        return;
      }

      const consumo = await consumoService.findById(getContext(req), req.params.id);
      if (!consumo) {
        res.status(404).json({ error: 'Not Found', message: 'Consumption record not found' });
        return;
      }

      res.status(200).json({ success: true, data: consumo });
    } catch (error) {
      next(error);
    }
  });

  /**
   * POST /consumos
   * Registrar consumo de material
   */
  router.post('/', authMiddleware.authenticate, authMiddleware.authorize('admin', 'engineer', 'resident'), async (req: Request, res: Response, next: NextFunction): Promise<void> => {
    try {
      const tenantId = req.tenantId;
      if (!tenantId) {
        res.status(400).json({ error: 'Bad Request', message: 'Tenant ID required' });
        return;
      }

      const dto: CreateConsumoDto = req.body;

      if (!dto.fraccionamientoId || !dto.productId || dto.quantity === undefined || !dto.consumptionDate) {
        res.status(400).json({
          error: 'Bad Request',
          message: 'fraccionamientoId, productId, quantity and consumptionDate are required',
        });
        return;
      }

      dto.consumptionDate = new Date(dto.consumptionDate);

      const consumo = await consumoService.create(getContext(req), dto);
      res.status(201).json({ success: true, data: consumo });
    } catch (error) {
      next(error);
    }
  });

  /**
   * DELETE /consumos/:id
   * Eliminar registro de consumo (soft delete)
   */
  router.delete('/:id', authMiddleware.authenticate, authMiddleware.authorize('admin', 'engineer'), async (req: Request, res: Response, next: NextFunction): Promise<void> => {
    try {
      const tenantId = req.tenantId;
      if (!tenantId) {
        res.status(400).json({ error: 'Bad Request', message: 'Tenant ID required' });
        return;
      }

      const deleted = await consumoService.softDelete(getContext(req), req.params.id);
      if (!deleted) {
        res.status(404).json({ error: 'Not Found', message: 'Consumption record not found' });
        return;
      }

      res.status(200).json({ success: true, message: 'Consumption record deleted' });
    } catch (error) {
      next(error);
    }
  });

  return router;
}

export default createConsumoObraController;