/**
 * Deluge.details.FilesTab.js
 *
 * Copyright (c) Damien Churchill 2009-2010 <damoxc@gmail.com>
 *
 * This file is part of Deluge and is licensed under GNU General Public License 3.0, or later, with
 * the additional special exception to link portions of this program with the OpenSSL library.
 * See LICENSE for more details.
 */

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 = {};
                var walk = function(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()) {
                        var setPriorities = function(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_options(
                    [this.torrentId],
                    { file_priorities: 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);
        }
    },
});