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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;
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