import {Container} from './Container'
import {TypedDependencyKey} from './types'

/**
 * Base class for Injection-aware classes that automatically
 * pass along their configured container to instances created
 * via their `make` method.
 */
export class InjectionAware {
    private ci: Container

    constructor() {
        this.ci = Container.getContainer()
    }

    /** Set the container for this instance. */
    public setContainer(ci: Container): this {
        this.ci = ci
        return this
    }

    /** Get the container for this instance. */
    public getContainer(): Container {
        return this.ci
    }

    /** Instantiate a new injectable using the container. */
    public make<T>(target: TypedDependencyKey<T>, ...parameters: any[]): T {
        const inst = this.ci.make<T>(target, ...parameters)

        if ( inst instanceof InjectionAware ) {
            inst.setContainer(this.ci)
        }

        return inst
    }
}