import Instantiable from '../type/Instantiable.ts'
import { DEPENDENCY_KEYS_METADATA_KEY } from '../type/DependencyKey.ts'
import { Reflect } from '../../../lib/src/external/reflect.ts'
import { Collection } from '../../../lib/src/collection/Collection.ts'
import { DependencyRequirement } from '../type/DependencyRequirement.ts'
import AbstractFactory from './AbstractFactory.ts'

/**
 * Standard factory that produces injected versions of instantiable classes.
 * @extends AbstractFactory
 */
export default class Factory extends AbstractFactory {
    constructor(
        protected token: Instantiable<any>
    ) {
        super(token)
    }

    produce(dependencies: any[], parameters: any[]) {
        return new this.token(...dependencies, ...parameters)
    }

    match(something: any) {
        return something === this.token || (something.toString && String(something) === this.token.name)
    }

    get_dependency_keys(): Collection<DependencyRequirement> {
        const meta = Reflect.getMetadata(DEPENDENCY_KEYS_METADATA_KEY, this.token)
        if ( meta ) return meta
        return new Collection<DependencyRequirement>()
    }
}