/**
 * diskon.controller.ts
 * Controller untuk mengelola data diskon & promosi (CRUD).
 */

import { Request, Response, NextFunction } from 'express';
import prisma from '../utils/db';
import { sukses, gagal } from '../utils/response';
import { AuthenticatedRequest } from '../middlewares/auth.middleware';
import { catatAudit } from '../utils/audit';

export class DiskonController {
  static async list(req: Request, res: Response, next: NextFunction) {
    try {
      const skip = parseInt(req.query.skip as string) || 0;
      const limit = parseInt(req.query.limit as string) || 100;
      const pencarian = req.query.pencarian as string || undefined;

      const where: any = {};
      if (pencarian) {
        where.nama = {
          contains: pencarian,
        };
      }

      const total = await prisma.diskon.count({ where });
      const promos = await prisma.diskon.findMany({
        where,
        skip,
        take: limit,
        orderBy: { created_at: 'desc' },
      });

      return sukses(res, promos, 'Daftar promosi berhasil dimuat', { total });
    } catch (error) {
      next(error);
    }
  }

  static async get(req: Request, res: Response, next: NextFunction) {
    try {
      const id = parseInt(req.params.id);
      const promo = await prisma.diskon.findUnique({
        where: { id },
      });

      if (!promo) {
        return gagal(res, 404, 'Promosi tidak ditemukan');
      }

      return sukses(res, promo, 'Detail promosi berhasil dimuat');
    } catch (error) {
      next(error);
    }
  }

  static async create(req: AuthenticatedRequest, res: Response, next: NextFunction) {
    try {
      const actorId = req.user.id;
      const ip = (req.ip || req.socket.remoteAddress || 'unknown').replace('::ffff:', '');
      const userAgent = (req.headers['user-agent'] || 'unknown') as string;

      const {
        nama,
        tipe,
        nilai,
        min_belanja,
        produk_ids,
        member_only,
        tgl_mulai,
        tgl_selesai,
        jam_mulai,
        jam_selesai,
        is_aktif,
      } = req.body;

      const promo = await prisma.diskon.create({
        data: {
          nama,
          tipe,
          nilai: Number(nilai),
          min_belanja: min_belanja !== undefined ? Number(min_belanja) : 0,
          produk_ids: produk_ids || null,
          member_only: member_only !== undefined ? Number(member_only) : 0,
          tgl_mulai: new Date(tgl_mulai),
          tgl_selesai: new Date(tgl_selesai),
          jam_mulai: jam_mulai ? new Date(`1970-01-01T${jam_mulai}`) : null,
          jam_selesai: jam_selesai ? new Date(`1970-01-01T${jam_selesai}`) : null,
          is_aktif: is_aktif !== undefined ? Number(is_aktif) : 1,
        },
      });

      await catatAudit({
        userId: actorId,
        aksi: 'create',
        entitas: 'diskon',
        entitasId: promo.id,
        dataBaru: { nama: promo.nama, tipe: promo.tipe, nilai: Number(promo.nilai) },
        ipAddress: ip,
        userAgent,
      });

      return sukses(res, promo, 'Promosi berhasil dibuat');
    } catch (error) {
      next(error);
    }
  }

  static async update(req: AuthenticatedRequest, res: Response, next: NextFunction) {
    try {
      const id = parseInt(req.params.id);
      const actorId = req.user.id;
      const ip = (req.ip || req.socket.remoteAddress || 'unknown').replace('::ffff:', '');
      const userAgent = (req.headers['user-agent'] || 'unknown') as string;

      const existing = await prisma.diskon.findUnique({ where: { id } });
      if (!existing) {
        return gagal(res, 404, 'Promosi tidak ditemukan');
      }

      const {
        nama,
        tipe,
        nilai,
        min_belanja,
        produk_ids,
        member_only,
        tgl_mulai,
        tgl_selesai,
        jam_mulai,
        jam_selesai,
        is_aktif,
      } = req.body;

      const promo = await prisma.diskon.update({
        where: { id },
        data: {
          nama: nama !== undefined ? nama : undefined,
          tipe: tipe !== undefined ? tipe : undefined,
          nilai: nilai !== undefined ? Number(nilai) : undefined,
          min_belanja: min_belanja !== undefined ? Number(min_belanja) : undefined,
          produk_ids: produk_ids !== undefined ? produk_ids : undefined,
          member_only: member_only !== undefined ? Number(member_only) : undefined,
          tgl_mulai: tgl_mulai !== undefined ? new Date(tgl_mulai) : undefined,
          tgl_selesai: tgl_selesai !== undefined ? new Date(tgl_selesai) : undefined,
          jam_mulai: jam_mulai !== undefined ? (jam_mulai ? new Date(`1970-01-01T${jam_mulai}`) : null) : undefined,
          jam_selesai: jam_selesai !== undefined ? (jam_selesai ? new Date(`1970-01-01T${jam_selesai}`) : null) : undefined,
          is_aktif: is_aktif !== undefined ? Number(is_aktif) : undefined,
        },
      });

      await catatAudit({
        userId: actorId,
        aksi: 'update',
        entitas: 'diskon',
        entitasId: promo.id,
        dataLama: { nama: existing.nama, tipe: existing.tipe, nilai: Number(existing.nilai) },
        dataBaru: { nama: promo.nama, tipe: promo.tipe, nilai: Number(promo.nilai) },
        ipAddress: ip,
        userAgent,
      });

      return sukses(res, promo, 'Promosi berhasil diperbarui');
    } catch (error) {
      next(error);
    }
  }

  static async delete(req: AuthenticatedRequest, res: Response, next: NextFunction) {
    try {
      const id = parseInt(req.params.id);
      const actorId = req.user.id;
      const ip = (req.ip || req.socket.remoteAddress || 'unknown').replace('::ffff:', '');
      const userAgent = (req.headers['user-agent'] || 'unknown') as string;

      const existing = await prisma.diskon.findUnique({ where: { id } });
      if (!existing) {
        return gagal(res, 404, 'Promosi tidak ditemukan');
      }

      await prisma.diskon.delete({ where: { id } });

      await catatAudit({
        userId: actorId,
        aksi: 'delete',
        entitas: 'diskon',
        entitasId: id,
        dataLama: { nama: existing.nama, tipe: existing.tipe, nilai: Number(existing.nilai) },
        dataBaru: { deleted: true },
        ipAddress: ip,
        userAgent,
      });

      return sukses(res, null, 'Promosi berhasil dihapus');
    } catch (error) {
      next(error);
    }
  }
}