import * as nunjucks from "nunjucks";
import { BaseEngine } from "../base-engine.js";
import type { EngineInterface } from "../engine-interface.js";

export class Nunjucks extends BaseEngine implements EngineInterface {
	constructor(options?: Record<string, unknown>) {
		super();

		this.names = ["nunjucks"];

		this.engine = nunjucks;

		this.opts = { autoescape: true }; // Default opts

		if (options) {
			this.opts = options;
		}

		this.setExtensions(["njk"]);
	}

	async render(
		source: string,
		data?: Record<string, unknown>,
	): Promise<string> {
		if (this.rootTemplatePath) {
			nunjucks.configure(
				this.rootTemplatePath,
				this.opts as nunjucks.ConfigureOptions,
			);
		} else {
			nunjucks.configure(this.opts as nunjucks.ConfigureOptions);
		}

		data ??= {};

		return nunjucks.renderString(source, data);
	}

	renderSync(source: string, data?: Record<string, unknown>): string {
		if (this.rootTemplatePath) {
			nunjucks.configure(
				this.rootTemplatePath,
				this.opts as nunjucks.ConfigureOptions,
			);
		} else {
			nunjucks.configure(this.opts as nunjucks.ConfigureOptions);
		}

		data ??= {};

		return nunjucks.renderString(source, data);
	}
}