// Type definitions for nunjucks
// Project: http://mozilla.github.io/nunjucks/
// Definitions by: Ruben Slabbert <https://github.com/RubenSlabbert/>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

declare namespace nunjucks {
	export function render(name: string, context?: Object): string;
	export function render(name: string, context?: Object, callback?: (err: any, res: string) => any): void;

	export function renderString(src: string, context: Object): string;
	export function renderString(src: string, context: Object, callback?: (err: any, res: string) => any): void;

	export function compile(src: string, env?: Environment): Template;
	export function compile(src: string, env?: Environment, callback?: (err: any, res: Template) => any): Template;

	export function precompile(path: string, opts?: PrecompileOptions): string;
	export function precompileString(src: string, opts?: PrecompileOptions): string;

	export interface PrecompileOptions {
		name?: string;
		asFunction?: boolean;
		force?: boolean;
		env?: Environment;
		include?: string[];
		exclude?: string[];
		wrapper?(templates: { name: string, template: string }, opts: PrecompileOptions): string;
	}

	export class Template {
		constructor(src: string, env?: Environment, eagerCompile?: boolean);
		render(context?: Object): string;
		render(context?: Object, callback?: (err: any, res: string) => any): void;
	}

	export function configure(options: ConfigureOptions): Environment;
	export function configure(path: string, options?: ConfigureOptions): Environment;
	export function configure(path: string[], options?: ConfigureOptions): Environment;

	export interface ConfigureOptions {
		autoescape?: boolean;
		throwOnUndefined?: boolean;
		trimBlocks?: boolean;
		lstripBlocks?: boolean;
		watch?: boolean;
		noCache?: boolean;
		web?: {
			useCache?: boolean,
			async?: boolean
		};
		express?: Object;
		tags?: {
			blockStart?: string,
			blockEnd?: string,
			variableStart?: string,
			variableEnd?: string,
			commentStart?: string,
			commentEnd?: string
		};
	}

	export class Environment {
		options: {
			autoescape: boolean;
		};

		constructor();
		constructor(loader: ILoader, opts?: ConfigureOptions);
		constructor(loaders: ILoader[], opts?: ConfigureOptions);

		render(name: string, context?: Object): string;
		render(name: string, context?: Object, callback?: (err: any, res: string) => any): void;

		renderString(name: string, context: Object): string;
		renderString(name: string, context: Object, callback?: (err: any, res: string) => any): void;

		addFilter(name: string, func: (...args: any[]) => any, async?: boolean): void;
		getFilter(name: string): void;

		addExtension(name: string, ext: Extension): void;
		removeExtension(name: string): void;
		getExtension(name: string): Extension;
		hasExtension(name: string): void;

		addGlobal(name: string, value: any): void;

		getTemplate(name: string, eagerCompile?: boolean): Template;
		getTemplate(name: string, eagerCompile?: boolean, callback?: (err: any, templ: Template) => Template): void;

		express(app: Object): void;
	}

	export interface Extension {
		tags: string[];
		// Parser API is undocumented it is suggested to check the source: https://github.com/mozilla/nunjucks/blob/master/src/parser.js
		parse(parser: any, nodes: any, lexer: any): any;
	}

	export function installJinjaCompat(): void;

	export interface ILoader {
		async?: boolean;
		getSource(name: string): LoaderSource;
		extend?(extender: ILoader): ILoader;
	}

	// Needs both Loader and ILoader since nunjucks uses a custom object system
	// Object system is also responsible for the extend methods
	export class Loader {
		on(name: string, func: (...args: any[]) => any): void;
		emit(name: string, ...args: any[]): void;
		resolve(from: string, to: string): string;
		isRelative(filename: string): boolean;
		extend(toExtend: ILoader): ILoader;
	}

	export interface LoaderSource {
		src: string;
		path: string;
		noCache: boolean;
	}

	export class FileSystemLoader extends Loader implements ILoader {
		init(searchPaths: string[], opts: any): void;
		getSource(name: string): LoaderSource;
	}

	export class WebLoader implements ILoader {
		constructor(baseUrl: string, opts?: any);
		getSource(name: string): LoaderSource;
	}

	export class PrecompiledLoader extends Loader implements ILoader {
		init(searchPaths: string[], opts: any): void;
		getSource(name: string): LoaderSource;
	}
}

declare module "nunjucks" {
	export = nunjucks;
}