import { Injectable } from "@nestjs/common";

import { PrismaService } from "../_prisma/prisma.service";
import { Prisma } from "@prisma/client";
import { IamPolicy } from "./iam-policy.entity";
import { IamRole } from "./iam-role.entity";
import { EntityAlreadyExists } from "../aws-shared-entities/aws-exceptions";

@Injectable()
export class IamService {

  constructor(
    private readonly prismaService: PrismaService,
  ) {}

  async createRole(data: Prisma.IamRoleCreateInput): Promise<IamRole> {
    try {
      const record = await this.prismaService.iamRole.create({ data });
      return new IamRole(record);
    } catch (err) {
      throw new EntityAlreadyExists(`RoleName ${data.name} already exists`);
    }
  }

  async findOneRoleByName(accountId: string, name: string): Promise<IamRole | null> {
    const record = await this.prismaService.iamRole.findFirst({
      where: {
        name,
        accountId,
      }
    });

    return record ? new IamRole(record) : null;
  }

  async deleteRoleByName(accountId: string, name: string) {
    await this.prismaService.iamRole.deleteMany({
      where: {
        name,
        accountId,
      }
    });
  }

  async createPolicy(data: Prisma.IamPolicyCreateInput): Promise<IamPolicy> {
    const record = await this.prismaService.iamPolicy.create({ data });
    return new IamPolicy(record);
  }
}