/*
	MIT License http://www.opensource.org/licenses/mit-license.php
*/

"use strict";

const RuntimeGlobals = require("../RuntimeGlobals");
const RuntimeModule = require("../RuntimeModule");

/** @import { PublicPath } from "../../declarations/WebpackOptions" */
/** @import Compilation from "../Compilation" */

class PublicPathRuntimeModule extends RuntimeModule {
	/**
	 * Returns true, if the runtime module should get it's own scope.
	 * When false, `generate()` must emit complete statements ending with `;`
	 * so a following runtime IIFE is not parsed as a call (ASI).
	 * @returns {boolean} true, if the runtime module should get it's own scope
	 */
	shouldIsolate() {
		return false;
	}

	/**
	 * @param {PublicPath} publicPath public path
	 */
	constructor(publicPath) {
		super("publicPath", RuntimeModule.STAGE_BASIC);
		/** @type {PublicPath} */
		this.publicPath = publicPath;
	}

	/**
	 * Generates runtime code for this runtime module.
	 * @returns {string | null} runtime code
	 */
	generate() {
		const { publicPath } = this;
		const compilation = /** @type {Compilation} */ (this.compilation);

		return `${RuntimeGlobals.publicPath} = ${JSON.stringify(
			compilation.getPath(publicPath || "", {
				hash: compilation.hash || "XXXX"
			})
		)};`;
	}
}

module.exports = PublicPathRuntimeModule;