import {MessageProvider} from '../MessageProvider';
import {MessageCreationOptions} from '../MessageCreationOptions';

export class TestMessage {

    id: string;
    type: string;
    title: string;
    body: string;
    options: MessageCreationOptions;
    closeHandlers: Array<any>;

    constructor(type: string, title: string, body: string, options: MessageCreationOptions) {
        this.type = type;
        this.title = title;
        this.body = body;
        this.options = options;
        this.id = 'test-message-' + (new Date()).getMilliseconds();
        this.closeHandlers = new Array<any>();
    }

    getId(): string {
        return this.id;
    }

    registerCloseHandler(closeHandler: any): void {
        this.closeHandlers.push(closeHandler);
    }

    callbackCloseHandlers() {
        for (let closeHandler of this.closeHandlers) {
            closeHandler();
        }
    }

}

/**
 * An implementation of MessageProvider.
 */
export class MessageProviderImpl implements MessageProvider {

    messageIdsToMessages: Map<string, TestMessage> = new Map<string, TestMessage>();

    constructor() {

    }

    generic(title: string, body: string, options: MessageCreationOptions): void {
        this.buildMessage('generic', title, body, options);
    }

    hint(title: string, body: string, options: MessageCreationOptions): void {
        this.buildMessage('hint', title, body, options);
    }

    info(title: string, body: string, options: MessageCreationOptions): void {
        this.buildMessage('info', title, body, options);
    }

    success(title: string, body: string, options: MessageCreationOptions): void {
        this.buildMessage('success', title, body, options);
    }

    warning(title: string, body: string, options: MessageCreationOptions): void {
        this.buildMessage('warning', title, body, options);
    }

    error(title: string, body: string, options: MessageCreationOptions): void {
        this.buildMessage('error', title, body, options);
    }

    clear(id: string): void {
        const message = this.messageIdsToMessages.get(id);
        if (message) {
            this.messageIdsToMessages.delete(id);
            message.callbackCloseHandlers();
        }
    }

    onClose(id: string, callback: any): void {
        const message = this.messageIdsToMessages.get(id);
        if (message) {
            message.registerCloseHandler(callback);
        }
    }

    buildMessage(type: string, title: string, body: string, options: MessageCreationOptions): string {
        const message = new TestMessage(type, title, body, options);
        const id = options.id;
        this.messageIdsToMessages.set(id, message);
        return id;
    }

}