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1 files changed, 91 insertions, 0 deletions

diff --git a/packages/gitbook/lib/output/ebook/onFinish.js b/packages/gitbook/lib/output/ebook/onFinish.js
new file mode 100644
index 0000000..7f21548
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+++ b/packages/gitbook/lib/output/ebook/onFinish.js
@@ -0,0 +1,91 @@
+var path = require('path');
+
+var WebsiteGenerator = require('../website');
+var JSONUtils = require('../../json');
+var Templating = require('../../templating');
+var Promise = require('../../utils/promise');
+var error = require('../../utils/error');
+var command = require('../../utils/command');
+var writeFile = require('../helper/writeFile');
+
+var getConvertOptions = require('./getConvertOptions');
+var SUMMARY_FILE = 'SUMMARY.html';
+
+/**
+    Write the SUMMARY.html
+
+    @param {Output}
+    @return {Output}
+*/
+function writeSummary(output) {
+    var options = output.getOptions();
+    var prefix = options.get('prefix');
+
+    var filePath = SUMMARY_FILE;
+    var engine = WebsiteGenerator.createTemplateEngine(output, filePath);
+    var context = JSONUtils.encodeOutput(output);
+
+    // Render the theme
+    return Templating.renderFile(engine, prefix + '/summary.html', context)
+
+    // Write it to the disk
+    .then(function(tplOut) {
+        return writeFile(output, filePath, tplOut.getContent());
+    });
+}
+
+/**
+    Generate the ebook file as "index.pdf"
+
+    @param {Output}
+    @return {Output}
+*/
+function runEbookConvert(output) {
+    var logger = output.getLogger();
+    var options = output.getOptions();
+    var format = options.get('format');
+    var outputFolder = output.getRoot();
+
+    if (!format) {
+        return Promise(output);
+    }
+
+    return getConvertOptions(output)
+    .then(function(options) {
+        var cmd = [
+            'ebook-convert',
+            path.resolve(outputFolder, SUMMARY_FILE),
+            path.resolve(outputFolder, 'index.' + format),
+            command.optionsToShellArgs(options)
+        ].join(' ');
+
+        return command.exec(cmd)
+        .progress(function(data) {
+            logger.debug(data);
+        })
+        .fail(function(err) {
+            if (err.code == 127) {
+                throw error.RequireInstallError({
+                    cmd: 'ebook-convert',
+                    install: 'Install it from Calibre: https://calibre-ebook.com'
+                });
+            }
+
+            throw error.EbookError(err);
+        });
+    })
+    .thenResolve(output);
+}
+
+/**
+    Finish the generation, generates the SUMMARY.html
+
+    @param {Output}
+    @return {Output}
+*/
+function onFinish(output) {
+    return writeSummary(output)
+    .then(runEbookConvert);
+}
+
+module.exports = onFinish;