import { DocFile, LessonFile, LessonLookup, ResourceMetadata } from "./types";

export { DocFile, LessonFile, LessonLookup, ResourceMetadata };

function noThrow<T>(x: Promise<T>): Promise<T | undefined> {

return x.catch(() => undefined);

}

export async function getApi(lang: string): Promise<DocFile | undefined> {

return await noThrow(import(`../langs/${lang}/api/api.md`));

}

export async function getDoc(

lang: string,

resource?: string

): Promise<DocFile | undefined> {

return await noThrow(import(`../langs/${lang}/guides/${resource}.md`));

}

export async function getGuideDirectory(

lang: string

): Promise<ResourceMetadata[] | undefined> {

const directory = await noThrow(

import(`../langs/${lang}/guides/directory.json`)

);

return directory?.default;

}

export async function getTutorial(

lang: string,

lesson: string

): Promise<LessonFile | undefined> {

const [lessonFiles, solved, markdown] = await Promise.all([

noThrow(import(`../langs/${lang}/tutorials/${lesson}/lesson.json`)),

noThrow(import(`../langs/${lang}/tutorials/${lesson}/solved.json`)),

noThrow(import(`../langs/${lang}/tutorials/${lesson}/lesson.md`)),

]);

return {

lesson: lessonFiles?.default,

solved: solved?.default,

markdown: markdown?.default,

};

}

export async function getTutorialDirectory(

lang: string

): Promise<LessonLookup[] | undefined> {

const directory = await noThrow(

import(`../langs/${lang}/tutorials/directory.json`)

);

return directory?.default;

}