import { Injectable, Inject } from '@nestjs/common';
import { IPaginator } from '@devstroupe/devkit-core';
import { IRoleRepository } from '../domain/role.repository';
import { Role } from '../domain/role';

@Injectable()
export class RoleService {
  constructor(
    @Inject('IRoleRepository')
    private readonly roleRepo: IRoleRepository,
  ) {}

  async create(role: Omit<Role, 'id'>): Promise<Role> {
    const existing = await this.roleRepo.findByName(role.name);
    if (existing) {
      throw new Error('Role name already exists');
    }
    return this.roleRepo.create(role);
  }

  async update(id: number, role: Partial<Role>): Promise<Role> {
    return this.roleRepo.update(id, role);
  }

  async findById(id: number): Promise<Role | null> {
    return this.roleRepo.findById(id);
  }

  async findByName(name: string): Promise<Role | null> {
    return this.roleRepo.findByName(name);
  }

  async findAll(): Promise<Role[]> {
    return this.roleRepo.findAll();
  }

  async findMany(query: any): Promise<IPaginator<Role>> {
    return this.roleRepo.findMany(query);
  }

  async delete(id: number): Promise<void> {
    await this.roleRepo.delete(id);
  }
}