/*!
 * Deluge.details.FilesTab.js
 * 
 * Copyright (c) Damien Churchill 2009-2010 <damoxc@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, write to:
 *     The Free Software Foundation, Inc.,
 *     51 Franklin Street, Fifth Floor
 *     Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the OpenSSL
 * library.
 * You must obey the GNU General Public License in all respects for all of
 * the code used other than OpenSSL. If you modify file(s) with this
 * exception, you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete
 * this exception statement from your version. If you delete this exception
 * statement from all source files in the program, then also delete it here.
 */
(function() {
	/* Renderers for the column tree */
	function fileProgressRenderer(value) {
		var progress = value * 100;
		return Deluge.progressBar(progress, this.col.width, progress.toFixed(2) + '%', 0);
	}
	function priorityRenderer(value) {
		if (isNaN(value)) return '';
		return String.format('<div class="{0}">{1}</div>', FILE_PRIORITY_CSS[value], _(FILE_PRIORITY[value]));
	}
	
	Deluge.details.FilesTab = Ext.extend(Ext.ux.tree.TreeGrid, {
		
		constructor: function(config) {
			config = Ext.apply({
				title: _('Files'),
				rootVisible: false,
				autoScroll: true,
				selModel: new Ext.tree.MultiSelectionModel(),
				
				columns: [{
					header: _('Filename'),
					width: 330,
					dataIndex: 'filename'
				}, {
					xtype: 'tgrendercolumn',
					header: _('Size'),
					width: 150,
					dataIndex: 'size',
					renderer: fsize
				}, {
					xtype: 'tgrendercolumn',
					header: _('Progress'),
					width: 150,
					dataIndex: 'progress',
					renderer: fileProgressRenderer
				}, {
					xtype: 'tgrendercolumn',
					header: _('Priority'),
					width: 150,
					dataIndex: 'priority',
					renderer: priorityRenderer
				}],
				
				root: new Ext.tree.TreeNode({
					text: 'Files'
				})
			}, config);

			Deluge.details.FilesTab.superclass.constructor.call(this, config);
		},

		initComponent: function() {
			
			Deluge.details.FilesTab.superclass.initComponent.call(this);
		},
		
		onRender: function(ct, position) {
			Deluge.details.FilesTab.superclass.onRender.call(this, ct, position);
			deluge.menus.filePriorities.on('itemclick', this.onItemClick, this);
			this.on('contextmenu', this.onContextMenu, this);
			this.sorter = new Ext.tree.TreeSorter(this, {
				folderSort: true
			});
		},
		
		clear: function() {
			var root = this.getRootNode();
			if (!root.hasChildNodes()) return;
			root.cascade(function(node) {
				var parent = node.parentNode;
				if (!parent) return;
				if (!parent.ownerTree) return;
				parent.removeChild(node);
			});
		},
		
		update: function(torrentId) {
			if (this.torrentId != torrentId) {
				this.clear();
				this.torrentId = torrentId;
			}
			
			deluge.client.web.get_torrent_files(torrentId, {
				success: this.onRequestComplete,
				scope: this,
				torrentId: torrentId
			});
		},
		
		onContextMenu: function(node, e) {
			e.stopEvent();
			var selModel = this.getSelectionModel();
			if (selModel.getSelectedNodes().length < 2) {
				selModel.clearSelections();
				node.select();
			}
			deluge.menus.filePriorities.showAt(e.getPoint());
		},
		
		onItemClick: function(baseItem, e) {
			switch (baseItem.id) {
				case 'expandAll':
					this.expandAll();
					break;
				default:
					var indexes = {};
					function walk(node) {
						if (Ext.isEmpty(node.attributes.fileIndex)) return;
						indexes[node.attributes.fileIndex] = node.attributes.priority;
					}
					this.getRootNode().cascade(walk);

					var nodes = this.getSelectionModel().getSelectedNodes();
					Ext.each(nodes, function(node) {
						if (!node.isLeaf()) {
							function setPriorities(node) {
								if (Ext.isEmpty(node.attributes.fileIndex)) return;
								indexes[node.attributes.fileIndex] = baseItem.filePriority;
							}
							node.cascade(setPriorities);
						} else if (!Ext.isEmpty(node.attributes.fileIndex)) {
							indexes[node.attributes.fileIndex] = baseItem.filePriority;
							return;
						}
					});
					
					var priorities = new Array(Ext.keys(indexes).length);
					for (var index in indexes) {
						priorities[index] = indexes[index];
					}

					deluge.client.core.set_torrent_file_priorities(this.torrentId, priorities, {
						success: function() {
							Ext.each(nodes, function(node) {
								node.setColumnValue(3, baseItem.filePriority);
							});
						},
						scope: this
					});
					break;
			}
		},
		
		onRequestComplete: function(files, options) {
			function walk(files, parent) {
				for (var file in files.contents) {
					var item = files.contents[file];
					var child = parent.findChild('id', file);
					if (item.type == 'dir') {
						if (!child) {
							child = new Ext.tree.TreeNode({
								id: file,
								text: file,
								filename: file,
								size: item.size,
								progress: item.progress,
								priority: item.priority
							});
							parent.appendChild(child);
						}
						walk(item, child);
					} else {
						if (!child) {
							child = new Ext.tree.TreeNode({
								id: file,
								filename: file,
								text: file, // this needs to be here for sorting
								fileIndex: item.index,
								size: item.size,
								progress: item.progress,
								priority: item.priority,
								leaf: true,
								iconCls: 'x-deluge-file',
								uiProvider: Ext.ux.tree.TreeGridNodeUI
							});
							parent.appendChild(child);
						}
					}
				}
			}
			var root = this.getRootNode();
			walk(files, root);
			root.firstChild.expand();
		}
	});
})();