It should generate index for languages

lib/__tests__/module.js

@@ -0,0 +1,6 @@
+
+describe('GitBook', function() {
+    it('should correctly export', function() {
+        require('../');
+    });
+});

lib/json/encodeOutput.js

@@ -0,0 +1,22 @@
+var encodeBook = require('./encodeBook');
+
+/**
+    Encode an output to JSON
+
+    @param {Output}
+    @return {Object}
+*/
+function encodeOutputToJson(output) {
+    var book = output.getBook();
+    var generator = output.getGenerator();
+
+    var result = encodeBook(book);
+
+    result.output = {
+        name: generator
+    };
+
+    return result;
+}
+
+module.exports = encodeOutputToJson;

lib/json/index.js

@@ -1,5 +1,6 @@
 
 module.exports = {
+    encodeOutput:           require('./encodeOutput'),
     encodeBookWithPage:     require('./encodeBookWithPage'),
     encodeBook:             require('./encodeBook'),
     encodeFile:             require('./encodeFile'),

lib/output/__tests__/website.js

@@ -25,5 +25,32 @@ describe('WebsiteGenerator', function() {
             expect(folder).toHaveFile('test/page.html');
         });
     });
+
+    pit('should generate a multilingual book', function() {
+        return generateMock(WebsiteGenerator, {
+            'LANGS.md': '# Languages\n\n* [en](en)\n* [fr](fr)',
+            'en': {
+                'README.md': 'Hello'
+            },
+            'fr': {
+                'README.md': 'Bonjour'
+            }
+        })
+        .then(function(folder) {
+            // It should generate languages
+            expect(folder).toHaveFile('en/index.html');
+            expect(folder).toHaveFile('fr/index.html');
+
+            // Should not copy languages as assets
+            expect(folder).not.toHaveFile('en/README.md');
+            expect(folder).not.toHaveFile('fr/README.md');
+
+            // Should copy assets only once
+            expect(folder).toHaveFile('gitbook/style.css');
+            expect(folder).not.toHaveFile('en/gitbook/style.css');
+
+            expect(folder).toHaveFile('index.html');
+        });
+    });
 });
 

lib/output/generateBook.js

@@ -21,7 +21,7 @@ var generatePages = require('./generatePages');
     @return {Promise<Output>}
 */
 function processOutput(generator, startOutput) {
-    return Pormise(startOutput)
+    return Promise(startOutput)
     .then(preparePlugins)
     .then(preparePages)
     .then(prepareAssets)
@@ -81,10 +81,11 @@ function processOutput(generator, startOutput) {
         var outputRoot = output.getRoot();
         var plugins = output.getPlugins();
         var state = output.getState();
+        var options = output.getOptions();
 
-        return Promise.forEach(books, function(langBook, language) {
+        return Promise.forEach(books, function(langBook) {
             // Inherits plugins list, options and state
-            var langOptions = options.set('root', path.join(outputRoot, language));
+            var langOptions = options.set('root', path.join(outputRoot, langBook.getLanguage()));
             var langOutput = new Output({
                 book:       langBook,
                 options:    langOptions,
@@ -155,7 +156,8 @@ function generateBook(generator, book, options) {
     var state = generator.State? generator.State({}) : Immutable.Map();
     var start = Date.now();
 
-    return Promise(
+    return processOutput(
+        generator,
         new Output({
             book: book,
             options: options,
@@ -163,7 +165,6 @@ function generateBook(generator, book, options) {
             generator: generator.name
         })
     )
-    .then(processOutput)
     .then(function(output) {
         var logger = output.getLogger();
         var end = Date.now();

lib/output/website/onFinish.js

@@ -1,15 +1,35 @@
 var Promise = require('../../utils/promise');
+var JSONUtils = require('../../json');
+var Templating = require('../../templating');
+var writeFile = require('../helper/writeFile');
+var createTemplateEngine = require('./createTemplateEngine');
 
 /**
-    Finish the generation
+    Finish the generation, write the languages index
 
     @param {Output}
     @return {Output}
 */
 function onFinish(output) {
-    // todo: render language index
+    var book = output.getBook();
+    var options = output.getOptions();
+    var prefix = options.get('prefix');
 
-    return Promise(output);
+    if (!book.isMultilingual()) {
+        return Promise(output);
+    }
+
+    var filePath = 'index.html';
+    var engine = createTemplateEngine(output, filePath);
+    var context = JSONUtils.encodeOutput(output);
+
+    // Render the theme
+    return Templating.renderFile(engine, prefix + '/languages.html', context)
+
+    // Write it to the disk
+    .then(function(html) {
+        return writeFile(output, filePath, html);
+    });
 }
 
 module.exports = onFinish;

lib/utils/promise.js

@@ -11,9 +11,9 @@ var Immutable = require('immutable');
 function reduce(arr, iter, base) {
     arr = Immutable.Iterable.isIterable(arr)? arr : Immutable.List(arr);
 
-    return arr.reduce(function(prev, elem, i) {
+    return arr.reduce(function(prev, elem, key) {
         return prev.then(function(val) {
-            return iter(val, elem, i);
+            return iter(val, elem, key);
         });
     }, Q(base));
 }
@@ -26,8 +26,8 @@ function reduce(arr, iter, base) {
     @return {Promise}
 */
 function forEach(arr, iter) {
-    return reduce(arr, function(val, el) {
-        return iter(el);
+    return reduce(arr, function(val, el, key) {
+        return iter(el, key);
     });
 }
 
@@ -39,8 +39,8 @@ function forEach(arr, iter) {
     @return {Promise}
 */
 function serie(arr, iter, base) {
-    return reduce(arr, function(before, item, i) {
-        return Q(iter(item, i))
+    return reduce(arr, function(before, item, key) {
+        return Q(iter(item, key))
         .then(function(r) {
             before.push(r);
             return before;

test.js

@@ -1,28 +0,0 @@
-var path = require('path');
-
-var gitbook = require('./lib');
-var Output = require('./lib/output');
-var NodeFS = require('./lib/fs/node');
-
-
-var BASE_PATH = path.join(__dirname); //, 'docs');
-
-// Create a filesystem to read the book
-var fs = NodeFS(BASE_PATH);
-
-// Create a book instance
-var book = gitbook.Book.createForFS(fs);
-
-// Parse the book
-gitbook.Parse.parseBook(book)
-.then(function(_book) {
-    return Output.generate(Output.WebsiteGenerator, _book, {
-        root: path.join(__dirname, '_book')
-    });
-})
-.then(function(pages) {
-    //console.log('parsed', pages);
-}, function(err) {
-    console.log('error:', err.stack);
-});
-