import * as format from 'string-template';

import { TNodeWithBlockStatement } from '../../types/TNodeWithBlockStatement';
import { TObfuscationEvent } from '../../types/TObfuscationEvent';

import { ICustomNode } from '../../interfaces/custom-nodes/ICustomNode';
import { IOptions } from '../../interfaces/IOptions';
import { IStorage } from '../../interfaces/IStorage';

import { ObfuscationEvents } from '../../enums/ObfuscationEvents';

import { ControlFlowStorageTemplate } from '../../templates/custom-nodes/control-flow-storage-nodes/ControlFlowStorageTemplate';

import { AbstractCustomNode } from '../AbstractCustomNode';
import { NodeAppender } from '../../node/NodeAppender';

export class ControlFlowStorageNode extends AbstractCustomNode {
    /**
     * @type {TObfuscationEvent}
     */
    protected readonly appendEvent: TObfuscationEvent = ObfuscationEvents.AfterObfuscation;

    /**
     * @type {IStorage <ICustomNode>}
     */
    private controlFlowStorage: IStorage <ICustomNode>;

    /**
     * @type {string}
     */
    private controlFlowStorageName: string;

    /**
     * @param controlFlowStorage
     * @param controlFlowStorageName
     * @param options
     */
    constructor (
        controlFlowStorage: IStorage <ICustomNode>,
        controlFlowStorageName: string,
        options: IOptions
    ) {
        super(options);

        this.controlFlowStorage = controlFlowStorage;
        this.controlFlowStorageName = controlFlowStorageName;
    }

    /**
     * @param blockScopeNode
     */
    public appendNode (blockScopeNode: TNodeWithBlockStatement): void {
        NodeAppender.prependNode(blockScopeNode, this.getNode());
    }

    /**
     * @returns {string}
     */
    public getCode (): string {
        return format(ControlFlowStorageTemplate(), {
            controlFlowStorage: this.controlFlowStorage.toString(),
            controlFlowStorageName: this.controlFlowStorageName
        });
    }
}