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import { Container } from "./Container";
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import { DescriptorBuilder } from "./DescriptorBuilder";
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import { Configurable, ConfigurableKeys, ContainerServices, Descriptor, IContainerBuilder, IDescriptorBuilder, RegistrationMap, ServiceContainer } from "./interfaces";
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import { LifetimeManager } from "./LifetimeManager";
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export class ContainerBuilder<S extends Configurable<S>> implements IContainerBuilder<S>{
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private _pending = 1;
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private readonly _services: Partial<RegistrationMap<ContainerServices<S>>>;
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private readonly _lifetimeManager = new LifetimeManager();
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constructor(parentServices?: object) {
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this._services = Object.create(parentServices ? parentServices : null) as object;
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}
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createServiceBuilder<K extends keyof S>(name: K): IDescriptorBuilder<ContainerServices<S>, NonNullable<S[K]>, object, keyof S> {
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return new DescriptorBuilder(this._lifetimeManager, this._register(name), this._fail);
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}
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build(): ServiceContainer<S> {
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this._assertBuilding();
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if(!this._complete())
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throw new Error("The configuration didn't complete.");
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return new Container(this._services, this._lifetimeManager);
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}
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private readonly _register = <K extends ConfigurableKeys<S>>(name: K) => (descriptor: Descriptor<S, NonNullable<S[K]>>) => {
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this._complete();
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this._services[name] = descriptor;
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};
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private readonly _fail = (ex: unknown) => {
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};
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private _assertBuilding() {
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throw new Error("The descriptor builder is finalized");
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}
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private _complete() {
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return !(--this._pending);
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}
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}
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