var tmp = require('tmp');

var Book = require('../models/book');
var createMockFS = require('../fs/mock');
var parseBook = require('../parse/parseBook');
var generateBook = require('./generateBook');


/**
    Generate a book using JSON generator
    And returns the path to the output dir.

    FOR TESTING PURPOSE ONLY

    @param {Generator}
    @param {Map<String:String|Map>} files
    @return {Promise<String>}
*/
function generateMock(Generator, files) {
    var fs = createMockFS(files);
    var book = Book.createForFS(fs);
    var dir;

    try {
        dir = tmp.dirSync();
    } catch(err) {
        throw err;
    }

    book = book.setLogLevel('disabled');

    return parseBook(book)
    .then(function(resultBook) {
        return generateBook(Generator, resultBook, {
            root: dir.name
        });
    })
    .thenResolve(dir.name);
}

module.exports = generateMock;