DRY - CRUDService

CRUDService.ts

interface Entity {
    id: string;
}

interface CrudOperationOptions<T extends Entity> {
    user: User;
    entity: T;
}

type CrudReturnType<T> = Promise<T | undefined>;

abstract class CRUDService<T extends Entity> implements DB<T> {
    private db: DB<T>;

    constructor(private entity: string) {
        this.db = new DB<T>(this.entity);
    }

    async create(options: CrudOperationOptions<T>): CrudReturnType<T> {
        console.log(`Create ${this.entity}.`);
        return this.db.create(options);
    }

    async read(options: CrudOperationOptions<T>): CrudReturnType<T> {
        console.log(`Get ${this.entity}`);
        return this.db.read(options);
    }

    async update(options: CrudOperationOptions<T>): CrudReturnType<T> {
        console.log(`Update ${this.entity}.`);
        return this.db.update(options);
    }

    async delete(options: CrudOperationOptions<T>): CrudReturnType<T> {
        console.log(`Delete${this.entity}.`);
        return this.db.delete(options);
    }

}