import { File } from "../core/File";
import { WorkFlowContext } from "../core/WorkflowContext";
import { Plugin } from "../core/WorkflowContext";

export interface HTMLPluginOptions {
    useDefault?: boolean;
}

/**
 *
 *
 * @export
 * @class FuseBoxHTMLPlugin
 * @implements {Plugin}
 */
export class FuseBoxHTMLPlugin implements Plugin {
    private useDefault = true;
    constructor(opts: HTMLPluginOptions = {}) {
        if (opts.useDefault !== undefined) {
            this.useDefault = opts.useDefault;
        }
    }
    /**
     *
     *
     * @type {RegExp}
     * @memberOf FuseBoxHTMLPlugin
     */
    public test: RegExp = /\.html$/;

    /**
     *
     *
     * @param {WorkFlowContext} context
     *
     * @memberOf FuseBoxHTMLPlugin
     */
    public init(context: WorkFlowContext) {
        context.allowExtension(".html");
    }
    /**
     *
     *
     * @param {File} file
     *
     * @memberOf FuseBoxHTMLPlugin
     */
    public transform(file: File) {

        let context = file.context;
        if (context.useCache) {
            let cached = context.cache.getStaticCache(file);
            if (cached) {
                file.isLoaded = true;
                file.contents = cached.contents;
                return;
            }
        }

        file.loadContents();
        if (this.useDefault) {
            file.contents = `module.exports.default =  ${JSON.stringify(file.contents)}`;
        } else {
            file.contents = `module.exports =  ${JSON.stringify(file.contents)}`;
        }

        if (context.useCache) {
            context.emitJavascriptHotReload(file);
            context.cache.writeStaticCache(file, file.sourceMap);
        }
    }
};

export const HTMLPlugin = (options?: HTMLPluginOptions) => {
    return new FuseBoxHTMLPlugin(options);
};