# All files / container Container.ts

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     import {ServiceMetadata} from "./types/ServiceMetadata";
    import {ObjectType} from "./types/ObjectType";
    import {Handler} from "./types/Handler";
    import {Token} from "./Token";
    import {ServiceIdentifier} from "./types/ServiceIdentifier";
    import {ContainerInstance} from "./ContainerInstance";

    /**
     * Service container.
     */
    export class Container {

        // -------------------------------------------------------------------------
        // Private Static Properties
        // -------------------------------------------------------------------------

        /**
         * Global container instance.
         */
        private static readonly globalInstance: ContainerInstance = new ContainerInstance(undefined);

        /**
         * Other containers created using Container.of method.
         */
        private static readonly instances: ContainerInstance[] = [];

        /**
         * All registered handlers.
         */
        static readonly handlers: Handler[] = [];

        // -------------------------------------------------------------------------
        // Public Static Methods
        // -------------------------------------------------------------------------

        /**
         * Gets a separate container instance for the given instance id.
         */
        static of(instanceId: any): ContainerInstance {
            if (instanceId === undefined)
                return this.globalInstance;

            let container = this.instances.find(instance => instance.id === instanceId);
            if (!container) {
                container = new ContainerInstance(instanceId);
                this.instances.push(container);
            }

            return container;
        }

        /**
         * Checks if the service with given name or type is registered service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static has<T>(type: ObjectType<T>): boolean;

        /**
         * Checks if the service with given name or type is registered service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static has<T>(id: string): boolean;

        /**
         * Checks if the service with given name or type is registered service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static has<T>(id: Token<T>): boolean;

        /**
         * Checks if the service with given name or type is registered service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static has<T>(identifier: ServiceIdentifier): boolean {
            return this.globalInstance.has(identifier as any);
        }

        /**
         * Retrieves the service with given name or type from the service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static get<T>(type: ObjectType<T>): T;

        /**
         * Retrieves the service with given name or type from the service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static get<T>(id: string): T;

        /**
         * Retrieves the service with given name or type from the service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static get<T>(id: Token<T>): T;

        /**
         * Retrieves the service with given name or type from the service container.
         * Optionally, parameters can be passed in case if instance is initialized in the container for the first time.
         */
        static get<T>(identifier: ServiceIdentifier): T {
            return this.globalInstance.get(identifier as any);
        }

        /**
         * Gets all instances registered in the container of the given service identifier.
         * Used when service defined with multiple: true flag.
         */
        static getMany<T>(id: string): T[];

        /**
         * Gets all instances registered in the container of the given service identifier.
         * Used when service defined with multiple: true flag.
         */
        static getMany<T>(id: Token<T>): T[];

        /**
         * Gets all instances registered in the container of the given service identifier.
         * Used when service defined with multiple: true flag.
         */
        static getMany<T>(id: string|Token<T>): T[] {
            return this.globalInstance.getMany(id as any);
        }

        /**
         * Sets a value for the given type or service name in the container.
         */
        static set<T, K extends keyof T>(service: ServiceMetadata<T, K>): Container;

        /**
         * Sets a value for the given type or service name in the container.
         */
        static set(type: Function, value: any): Container;

        /**
         * Sets a value for the given type or service name in the container.
         */
        static set(name: string, value: any): Container;

        /**
         * Sets a value for the given type or service name in the container.
         */
        static set(token: Token<any>, value: any): Container;

        /**
         * Sets a value for the given type or service name in the container.
         */
        static set<T, K extends keyof T>(values: ServiceMetadata<T, K>[]): Container;

        /**
         * Sets a value for the given type or service name in the container.
         */
        static set(identifierOrServiceMetadata: ServiceIdentifier|ServiceMetadata<any, any>|(ServiceMetadata<any, any>[]), value?: any): Container {
            this.globalInstance.set(identifierOrServiceMetadata as any, value);
            return this;
        }

        /**
         * Removes services with a given service identifiers (tokens or types).
         */
        static remove(...ids: ServiceIdentifier[]): Container {
            this.globalInstance.remove(...ids);
            return this;
        }

        /**
         * Completely resets the container by removing all previously registered services and handlers from it.
         */
        static reset(containerId?: any): Container {
            if (containerId) {
                const instance = this.instances.find(instance => instance.id === containerId);
                if (instance) {
                    instance.reset();
                    this.instances.splice(this.instances.indexOf(instance), 1);
                }

            } else {
                this.globalInstance.reset();
                this.instances.forEach(instance => instance.reset());
            }
            return this;
        }

        /**
         * Registers a new handler.
         */
        static registerHandler(handler: Handler): Container {
            this.handlers.push(handler);
            return this;
        }

        /**
         * Helper method that imports given services.
         */
        static import(services: Function[]): Container {
            return this;
        }

    }