/// <reference path="../../built/pxtcompiler.d.ts"/>

import * as fs from 'fs';

import * as path from 'path';

import "mocha";

import * as chai from "chai";

import * as util from "../common/testUtils";

const casesDir = path.join(process.cwd(), "tests", "tutorial-test", "cases");

const baselineDir = path.join(process.cwd(), "tests", "tutorial-test", "baselines");

// Just needs to exist

pxt.setAppTarget(util.testAppTarget);

describe("tutorial test cases", () => {

const filenames: string[] = [];

for (const file of fs.readdirSync(casesDir)) {

if (file[0] == ".") {

continue;

}

const filename = path.join(casesDir, file)

if (file.substr(-3) === ".md") {

filenames.push(filename)

}

};

filenames.forEach(filename => {

it("should correctly parse " + path.basename(filename), () => {

tutorialTest(filename)

});

});

});

function tutorialTest(filename: string) {

const input = fs.readFileSync(filename, "utf8");

const basename = path.basename(filename).slice(0, -3) + ".json";

const baselinePath = path.join(baselineDir, basename);

let info = pxt.tutorial.parseTutorial(input);

let baseline;

try {

baseline = JSON.parse(fs.readFileSync(baselinePath, "utf8"));

}

catch (e) {

// If there isn't a baseline, generate one.

let newBaseline = info;

fs.writeFileSync(baselinePath, JSON.stringify(newBaseline, null, 4));

}

baseline = baseline || info;

let err = pxt.Util.deq(baseline, info);

if (err) {

fs.writeFileSync(baselinePath + ".original", JSON.stringify(baseline, null, 4));

fs.writeFileSync(baselinePath, JSON.stringify(info, null, 4));

}

chai.assert(err === null, `Parsed tutorial did not match baseline. See ${basename} diff for details.`);

}