begin refactor of posts/topics + pagination + cleanup + async

src/postTools.js

@@ -0,0 +1,92 @@
+var	RDB = require('./redis.js'),
+	posts = require('./posts.js'),
+	threadTools = require('./threadTools.js'),
+	user = require('./user.js'),
+	config = require('../config.js'),
+	async = require('async'),
+	marked = require('marked');
+
+marked.setOptions({
+	breaks: true
+});
+
+(function(PostTools) {
+
+	PostTools.privileges = function(pid, uid, callback) {
+		//todo: break early if one condition is true 
+		
+		function getThreadPrivileges(next) {
+			posts.get_tid_by_pid(pid, function(tid) {
+					threadTools.privileges(tid, uid, function(privileges) {
+						next(null, privileges);
+					});
+				});
+		}
+
+		function isOwnPost(next) {
+			RDB.get('pid:' + pid + ':uid', function(err, author) {
+					if (author && parseInt(author) > 0) next(null, author === uid);
+				});
+		}
+
+		function hasEnoughRep(next) {
+			// DRY fail in threadTools.
+
+			user.getUserField(uid, 'reputation', function(reputation) {
+					next(null, reputation >= config.privilege_thresholds.manage_content);
+				});
+		}
+
+		async.parallel([getThreadPrivileges, isOwnPost, hasEnoughRep], function(err, results) {
+			callback({
+				editable: results[0].editable || (results.slice(1).indexOf(true) !== -1 ? true : false),
+				view_deleted: results[0].view_deleted || (results.slice(1).indexOf(true) !== -1 ? true : false)
+			});
+		});
+	}
+
+	PostTools.edit = function(uid, pid, content) {
+		var	success = function() {
+				RDB.set('pid:' + pid + ':content', content);
+				RDB.set('pid:' + pid + ':edited', new Date().getTime());
+				RDB.set('pid:' + pid + ':editor', uid);
+
+				posts.get_tid_by_pid(pid, function(tid) {
+					io.sockets.in('topic_' + tid).emit('event:post_edited', { pid: pid, content: marked(content || '') });
+				});
+			};
+
+		PostTools.privileges(pid, uid, function(privileges) {
+			if (privileges.editable) success();
+		});
+	}
+
+	PostTools.delete = function(uid, pid) {
+		var	success = function() {
+				RDB.set('pid:' + pid + ':deleted', 1);
+
+				posts.get_tid_by_pid(pid, function(tid) {
+					io.sockets.in('topic_' + tid).emit('event:post_deleted', { pid: pid });
+				});
+			};
+
+		PostTools.privileges(pid, uid, function(privileges) {
+			if (privileges.editable) success();
+		});
+	}
+
+	PostTools.restore = function(uid, pid) {
+		var	success = function() {
+				RDB.del('pid:' + pid + ':deleted');
+
+				posts.get_tid_by_pid(pid, function(tid) {
+					io.sockets.in('topic_' + tid).emit('event:post_restored', { pid: pid });
+				});
+			};
+
+		PostTools.privileges(pid, uid, function(privileges) {
+			if (privileges.editable) success();
+		});
+	}
+
+}(exports));