'use strict';

var co = require('co');

var fs = require('fs');

var path = require('path');

var log = require('log')();

var Article = require('../models/article');

var Task = require('../models/task');

var url = require('url');

var execSync = require('child_process').execSync;

module.exports = function(options) {

return function() {

return co(function* () {

var args = require('yargs')

.usage("tutorial url is required.")

.example("gulp tutorial:edit --url http://javascript.in/memory-leaks-jquery --root /js/javascript-tutorial")

.demand(['url', 'root'])

.argv;

var urlPath = url.parse(args.url).pathname.split('/').filter(Boolean);

if (urlPath.length == 1) {

var article = yield Article.findOne({slug: urlPath[0]}).exec();

if (!article) {

console.log("Not found!");

return;

}

let weight = article.weight + '';

if (weight.length < 2) weight = 0 + weight;

var dirName = weight + '-' + article.slug;

let cmd = "find '" + args.root + "' -path '*/" + dirName + "/article.md'";

console.log(cmd);

var result = execSync(cmd, {encoding: 'utf8'}).trim();

if (!result) {

return;

}

console.log(path.dirname(result));

execSync('s ' + result);

}

if (urlPath[0] == 'task') {

var task = yield Task.findOne({slug: urlPath[1]}).exec();

if (!task) {

return;

}

var dirName = task.weight + '-' + task.slug;

var result = execSync("find /js/javascript-tutorial -path '*/" + dirName + "/task.md'", {encoding: 'utf8'}).trim();

if (!result) {

return;

}

console.log(path.dirname(result));

execSync('s ' + result + ' ' + result.replace('task.md', 'solution.md'));

}

});

};

};