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var walk = require('walk');
var fs = require('fs');
var path = require('path');
var ical = require('ical');
var forEachAsync = require('forEachAsync');
var walker;
var watcher;
var configuration;
var files = [];
exports.start = function(config) {
configuration = config;
if(typeof configuration.ignoreDotFiles !== 'undefined' && configuration.ignoreDotFiles == 'false') {
watcher = require('watch-tree').watchTree(configuration.rootDir, {});
} else {
watcher = require('watch-tree').watchTree(configuration.rootDir, {ignore: '.*'});
}
watcher.on('fileDeleted', exports.rebuildFiles);
watcher.on('fileCreated', exports.rebuildFiles);
watcher.on('fileModified', exports.rebuildFiles);
exports.rebuildFiles();
};
exports.rebuildFiles = function() {
console.log('rebuilding...');
walker = walk.walk(configuration.rootDir, { followLinks: false });
var newSlides = {};
walker.on("directories", function (root, dirAr, next) {
var lastDir = path.join(__dirname, root).split('/');
if((lastDir.length - __dirname.split('/').length) < 2) {
dirAr.forEach(function(dir) {
newSlides[dir.name] = { name: dir.name, template: '', slides: []};
});
}
next();
}).on("file", function(root, fileStats, next) {
if(fileStats.name == configuration.descriptionFile || fileStats.name == configuration.eventFile) {
next();
}
else if(fileStats.name == configuration.templateFile) {
var lastDir = root.split('/');
newSlides[lastDir[lastDir.length - 1]]['template'] = path.join(lastDir[lastDir.length - 1], fileStats.name);
next();
} else {
var lastDir = path.join(root).split('/');
if(newSlides.hasOwnProperty(lastDir[lastDir.length - 1])) {
var ext = path.extname(fileStats);
var type = 'image';
switch (ext) {
case '.mp4':
case '.avi':
case '.ogv':
case '.mkv':
type = 'video';
break;
}
newSlides[lastDir[lastDir.length - 1]]['slides'].push({ type: type, file: path.join(lastDir[lastDir.length - 1], fileStats.name), head: '', text: ''});
}
next();
}
}).on("errors", function(root, nodeStatsArray, next) {
next();
}).on("end", function() {
for(var slideset in newSlides) {
/* collects descriptions and adds them to the slideset */
var collectDescs = function(slideset) {
fs.readFile(path.join(__dirname, configuration.rootDir, slideset, configuration.descriptionFile), function(err, data) {
if(err) { setSlides(slideset, newSlides[slideset], function(err) { if(err) { throw err}}); return; }
var descs = JSON.parse(data.toString());
for(var file in newSlides[slideset]['slides']) {
if(!newSlides[slideset]['slides'].hasOwnProperty(file)) { continue; }
if(!newSlides[slideset]['slides'][file].hasOwnProperty('file')) { continue; }
for(var desc in descs) {
if(!descs.hasOwnProperty(desc)) { continue; }
var comp = newSlides[slideset]['slides'][file]['file'].split('/');
if(descs[desc]['file'] == comp[comp.length - 1]) {
newSlides[slideset]['slides'][file]['head'] = descs[desc]['head'];
newSlides[slideset]['slides'][file]['text'] = descs[desc]['text'];
}
}
}
setSlides(slideset, newSlides[slideset], function(err) { if(err) { throw err; }});
});
}
/* collect events and adds them to the slideset */
var collectEvents = function(slideset) {
fs.readFile(path.join(__dirname, configuration.rootDir, slideset, configuration.eventFile), function(err, data) {
if(err) { return; }
try {
var events = JSON.parse(data.toString());
} catch(e) {
return;
}
if(events['type'] == 'text') {
setEvents(slideset, events['events'], function(err) {
if(err) { throw err; }
});
} else if(events['type'] == 'ical') {
ical.fromURL(events['url'], {}, function(err, bloat) {
if(err) { throw err; }
var bDate = new Date();
var fDate = new Date();
bDate.setMinutes(bDate.getMinutes() - events['before']);
fDate.setMinutes(bDate.getMinutes() + events['after']);
var data = ical.events_between(bDate, fDate);
var compEv = [];
for (var k in data) {
if (!data.hasOwnProperty(k)) { continue; }
var ev = data[k];
if(ev.start && ev.summary) {
var dateStr = ev.start.toLocaleDateString();
ev.start = ev.start.toLocaleTimeString();
ev.end = ev.end.toLocaleTimeString();
delete ev.rrule;
delete ev.uid;
delete ev.type;
for(var i in ev) {
if(!ev.hasOwnProperty(i)) { continue; }
if(typeof ev[i] != 'string') { continue; }
ev[i] = ev[i].replace(/\\,/g, ',');
}
if(typeof compEv[dateStr] == "undefined") {
compEv[dateStr] = [];
}
compEv[dateStr].push(ev);
}
}
setEvents(slideset, compEv, function(err) {
if(err) { throw err; }
});
});
}
});
}
collectDescs(slideset);
collectEvents(slideset);
}
});
};
var setEvents = function(slideset, events, cb) {
for (var searchset in files) {
if(!files.hasOwnProperty(searchset)) { continue; }
if(files[searchset].name == slideset) {
files[searchset]['events'] = events;
cb(null);
return;
}
}
cb('Couldn\'t find slideset');
};
var setSlides = function(slideName, newSlides, cb) {
files[slideName] = newSlides;
cb(null);
};
exports.getSlides = function(slideset, cb) {
for (var searchset in files) {
if(!files.hasOwnProperty(searchset)) { continue; }
if(files[searchset].name == slideset) {
cb(null, files[searchset]);
return;
}
}
cb('Couldn\'t find slideset');
};
exports.getAllSlides = function(cb) {
var slidesets = [];
for(var slideset in files) {
if(!files.hasOwnProperty(slideset)) { continue; }
slidesets.push(files[slideset].name);
}
cb(slidesets);
};
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