/*!
 * 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.
 */

Deluge.details.FilesTab = Ext.extend(Ext.ux.tree.TreeGrid, {

	title: _('Files'),

	rootVisible: false,

	columns: [{
		header: _('Filename'),
		width: 330,
		dataIndex: 'filename'
	}, {
		header: _('Size'),
		width: 150,
		dataIndex: 'size',
		tpl: new Ext.XTemplate('{size:this.fsize}', {
			fsize: function(v) { return fsize(v); }
		})
	}, {
		xtype: 'tgrendercolumn',
		header: _('Progress'),
		width: 150,
		dataIndex: 'progress',
		renderer: function(v) {
			var progress = v * 100;
			return Deluge.progressBar(progress, this.col.width, progress.toFixed(2) + '%', 0);
		}
	}, {
		header: _('Priority'),
		width: 150,
		dataIndex: 'priority',
		tpl: new Ext.XTemplate('<tpl if="!isNaN(priority)">' +
			'<div class="{priority:this.getClass}">' +
				'{priority:this.getName}' +
			'</div></tpl>', {
			getClass: function(v) {
				return FILE_PRIORITY_CSS[v];
			},

			getName: function(v) {
				return _(FILE_PRIORITY[v]);
			}
		})
	}],

	selModel: new Ext.tree.MultiSelectionModel(),

	initComponent: function() {
		Deluge.details.FilesTab.superclass.initComponent.call(this);
		this.setRootNode(new Ext.tree.TreeNode({text: 'Files'}));
	},

	clear: function() {
		var root = this.getRootNode();
		if (!root.hasChildNodes()) return;
		root.cascade(function(node) {
			var parentNode = node.parentNode;
			if (!parentNode) return;
			if (!parentNode.ownerTree) return;
			parentNode.removeChild(node);
		});
	},

	createFileTree: function(files) {
		function walk(files, parentNode) {
			for (var file in files.contents) {
				var item = files.contents[file];
				if (item.type == 'dir') {
					walk(item, parentNode.appendChild(new Ext.tree.TreeNode({
						text: file,
						filename: file,
						size: item.size,
						progress: item.progress,
						priority: item.priority
					})));
				} else {
					parentNode.appendChild(new Ext.tree.TreeNode({
						text: file,
						filename: file,
						fileIndex: item.index,
						size: item.size,
						progress: item.progress,
						priority: item.priority,
						leaf: true,
						iconCls: 'x-deluge-file',
						uiProvider: Ext.ux.tree.TreeGridNodeUI
					}));
				}
			}
		}
		var root = this.getRootNode();
		walk(files, root);
		root.firstChild.expand();
	},

	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
		});
	},

	updateFileTree: function(files) {
		function walk(files, parentNode) {
			for (var file in files.contents) {
				var item = files.contents[file];
				var node = parentNode.findChild('filename', file);
				node.attributes.size     = item.size;
				node.attributes.progress = item.progress;
				node.attributes.priority = item.priority;
				node.ui.updateColumns();
				if (item.type == 'dir') {
					walk(item, node);
				}
			}
		}
		walk(files, this.getRootNode());
	},

	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
		});
	},

	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) {
		if (!this.getRootNode().hasChildNodes()) {
			this.createFileTree(files);
		} else {
			this.updateFileTree(files);
		}
	}
});
