Add gitbook init command, fixes #67

1 files changed, 69 insertions, 0 deletions

diff --git a/lib/generate/init.js b/lib/generate/init.js
new file mode 100644
index 0000000..705e6e7
--- /dev/null
+++ b/lib/generate/init.js
@@ -0,0 +1,69 @@
+var Q = require('q');
+var _ = require('lodash');
+
+var path = require('path');
+
+var fs = require('./fs');
+var parse = require('../parse');
+
+
+// Extract paths out of a summary
+function paths(summary) {
+    return _.reduce(summary.chapters, function(accu, chapter) {
+        return accu.concat(
+            _.filter([chapter.path].concat(_.pluck(chapter.articles, 'path')))
+        );
+    }, []);
+}
+
+// Get the parent folders out of a group of files
+function folders(files) {
+    return _.chain(files)
+    .map(function(file) {
+        return path.dirname(file);
+    })
+    .uniq()
+    .value();
+}
+
+function initDir(dir) {
+    return fs.readFile(path.join(dir, 'SUMMARY.md'), 'utf8')
+    .then(function(src) {
+        // Parse summary
+        return parse.summary(src);
+    })
+    .then(function(summary) {
+        // Extract paths from summary
+        return paths(summary);
+    })
+    .then(function(paths) {
+        // Convert to absolute paths
+        return _.map(paths, function(file) {
+            return path.resolve(file);
+        });
+    })
+    .then(function(files) {
+        // Create folders
+        return Q.all(_.map(folders(files), function(folder) {
+            return fs.mkdirp(folder);
+        }))
+        .then(_.constant(files));
+    })
+    .then(function(files) {
+        // Create files that don't exist
+        return Q.all(_.map(files, function(file) {
+            return fs.exists(file)
+            .then(function(exists) {
+                if(exists) return;
+                return fs.writeFile(file, '');
+            });
+        }));
+    })
+    .fail(function(err) {
+        console.error(err.stack);
+    });
+}
+
+
+// Exports
+module.exports = initDir;