@model Disco.Web.Models.InitialConfig.FileStoreModel
@{
    ViewBag.Title = null;
    Html.BundleDeferred("~/Style/jQueryUI/dynatree");
    Html.BundleDeferred("~/ClientScripts/Modules/jQueryUI-DynaTree");
}
<h1>@CommonHelpers.Breadcrumbs(Html.ToBreadcrumb("Initial Configuration", MVC.InitialConfig.Index(), "File Store"))</h1>
<div id="initialConfig_FileStore">
    @Html.ValidationSummary(false)

    <div class="form" style="width: 650px">
        <h2>File Store Location</h2>
        <table>
            <tr>
                <td>
                    <div id="treeFilesystem">
                    </div>
                    <div id="treeFilesystemActions">
                        <a id="createDirectory" href="#" class="button" disabled="disabled">Create Directory</a>
                    </div>
                </td>
            </tr>
            <tr>
                <td>
                    <div>
                        Selected Location: <span id="locationPath" class="code">&lt;None&gt;</span> <span id="locationPathInvalid" class="smallMessage">(Invalid DataStore Location)</span>
                    </div>
                </td>
            </tr>
        </table>
    </div>
    @using (Html.BeginForm())
    {
        @Html.HiddenFor(m => m.FileStoreLocation)
        <div class="actionBar">
            <input id="submitForm" type="submit" class="button" value="Continue" disabled="disabled" />
        </div>
    }
</div>
<div id="dialogWait" title="Please Wait">
    <h2><span class="ajaxLoading"></span>Building and Validating File Store</h2>
    <div>Please wait while the Disco File Store is created and/or validated</div>
</div>
<div id="dialogCreateDirectory" title="Create Directory">
    <h2>Create Directory</h2>
    <input type="text" id="createDirectoryName" />
    <div>Parent: <span id="createDirectoryParent" class="code"></span></div>
</div>
<script>
    (function () {
        var fileSystemBranchUrl = '@(Url.Action(MVC.InitialConfig.FileStoreBranch()))';
        var fileSystemInitialBranches = null;
        var fileSystemBranchSelected = null;
        var $treeFilesystem = $('#treeFilesystem');

        var nodeDataLoaded = function (node) {
            var addedNodes = [];
            var previousUpdateMode = node.tree.enableUpdate(false);
            var descriptor = node.data.fileSystemDescriptor;
            // Sub Folders
            if (descriptor.SubDirectories) {
                var hasSubDirectories = false;
                for (var k in descriptor.SubDirectories) {
                    hasSubDirectories = true;
                    var d = descriptor.SubDirectories[k];
                    var n = node.addChild({ key: d.Path, title: d.IsNew ? d.Name + ' [New]' : d.Name, tooltip: d.Path, unselectable: !d.Selectable, addClass: 'directory', isLazy: true, isFolder: true, fileSystemDescriptor: d });
                    addedNodes.push(n);

                    if (d.SubDirectories) {
                        nodeDataLoaded(n);
                    }
                }
                if (!hasSubDirectories) {
                    // Leaf
                    node.data.isLazy = false;
                    if (!fileSystemInitialBranches)
                        node.render();
                }
            }
            node.setLazyNodeStatus(DTNodeStatus_Ok);
            node.tree.enableUpdate(previousUpdateMode);
            return addedNodes;
        }
        var loadNodeData = function (node) {
            var descriptor = node.data.fileSystemDescriptor;

            if (!descriptor.SubDirectories) {
                $.ajax({
                    url: fileSystemBranchUrl,
                    dataType: 'json',
                    data: { Path: descriptor.Path },
                    success: function (data) {
                        node.data.fileSystemDescriptor = data;
                        return nodeDataLoaded(node);
                    },
                    error: function () {
                        alert('Unable to access this path: ' + descriptor.Path);
                        node.remove();
                    }
                })
            } else {
                return nodeDataLoaded(node);
            }
        }
        var lazyLoadNode = function (node) {
            if (node.data.fileSystemDescriptor) {
                node.setLazyNodeStatus(DTNodeStatus_Loading);
                loadNodeData(node);
            } else {
                node.setLazyNodeStatus(DTNodeStatus_Ok);
            }
        }
        var activeNodeUpdated = function () {
            var activeNode = $("#treeFilesystem").dynatree("getActiveNode");

            if (activeNode !== null) {
                fileSystemBranchSelected = activeNode.data.fileSystemDescriptor;
            } else {
                fileSystemBranchSelected = null
            }

            if (fileSystemBranchSelected !== null) {
                $('#locationPath').text(fileSystemBranchSelected.Path);
                $('#createDirectory').attr('disabled', false);
                if (fileSystemBranchSelected.Selectable) {
                    $('#submitForm').attr('disabled', false);
                    $('#locationPathInvalid').hide();
                } else {
                    $('#submitForm').attr('disabled', true);
                    $('#locationPathInvalid').show();
                }
            } else {
                $('#createDirectory').attr('disabled', true);
                $('#submitForm').attr('disabled', true);
                $('#locationPath').text('<None>');
                $('#locationPathInvalid').show();
            }
        }
        var scrollToNode = function (node) {
            var $li = $(node.li);
            var $treeRoot = $($treeFilesystem.dynatree('getRoot').ul);
            var ih = $li.height();
            var th = $treeRoot.height();
            var ts = $treeRoot.scrollTop();
            var is = $li.position().top;
            if ((ih + is) > th) {
                if (ih > th) {
                    $treeRoot.animate({ 'scrollTop': (is + ts) }, 'fast');
                } else {
                    $treeRoot.animate({ 'scrollTop': (ih + is + ts - th) }, 'fast');
                }
            }
        }
        var nodeExpanded = function (flag, node) {
            if (flag)
                window.setTimeout(function () { scrollToNode(node); }, 1);
        }
        var nodeDeactivated = function () {
            activeNodeUpdated();
        }
        var nodeActivated = function (node) {
            activeNodeUpdated();
            nodeExpanded(true, node);
        }

        $(function () {
            $('#dialogWait').dialog({
                autoOpen: false,
                draggable: false,
                modal: true,
                resizable: false,
                width: 400,
                height: 150,
                closeOnEscape: false
            }).closest('.ui-dialog').find('.ui-dialog-titlebar-close').hide();

            $('#dialogCreateDirectory').dialog({
                autoOpen: false,
                draggable: false,
                modal: true,
                resizable: false,
                width: 400,
                height: 180,
                buttons: {
                    'Cancel': function () {
                        $('#dialogCreateDirectory').dialog('close');
                    },
                    'Create Directory': function () {
                        var activeNode = $("#treeFilesystem").dynatree("getActiveNode");
                        if (activeNode) {
                            var name = $('#createDirectoryName').val();
                            d = {
                                Name: name,
                                Path: fileSystemBranchSelected.Path.charAt(fileSystemBranchSelected.Path.length - 1) === '\\' ? fileSystemBranchSelected.Path + name : fileSystemBranchSelected.Path + '\\' + name,
                                IsNew: true,
                                Selectable: true,
                                SubDirectories: {}
                            }
                            activeNode.addChild({ title: d.Name + ' [New]', tooltip: d.Path, unselectable: !d.Selectable, addClass: 'newDirectory', isLazy: false, isFolder: true, fileSystemDescriptor: d }).activate();
                        }
                        $('#dialogCreateDirectory').dialog('close');
                    }
                }
            })

            $('#createDirectory').click(function () {
                if (fileSystemBranchSelected) {
                    $('#dialogCreateDirectory').dialog('open');
                    $('#createDirectoryName').val('').focus();
                    $('#createDirectoryParent').text(fileSystemBranchSelected.Path);
                }
                return false;
            });

            $('#submitForm').closest('form').submit(function () {
                if (fileSystemBranchSelected && fileSystemBranchSelected.Selectable) {
                    if ($(this).valid()) {
                        $('#dialogWait').dialog('open');
                        $('#FileStoreLocation').val(fileSystemBranchSelected.Path);
                    }
                    return true;
                } else {
                    alert('Invalid FileStore Location');
                    return false;
                }
            });

            $treeFilesystem.dynatree({ onLazyRead: lazyLoadNode, onActivate: nodeActivated, onDeactivate: nodeDeactivated, onExpand: nodeExpanded });
            var rootNode = $treeFilesystem.dynatree('getRoot');

            var previousUpdateMode = rootNode.tree.enableUpdate(false);
            rootNode.data.fileSystemDescriptor = fileSystemInitialBranches[0];
            loadNodeData(rootNode);
            rootNode.tree.enableUpdate(previousUpdateMode);

            var initialValue = $('#FileStoreLocation').val();
            if (initialValue) {
                var initialNode = rootNode.tree.getNodeByKey(initialValue);
                if (initialNode)
                    initialNode.activate();
            }

            fileSystemInitialBranches = null;
        });


        fileSystemInitialBranches = [@(new HtmlString(Json.Encode(Model.DirectoryModel)))];
    })();
</script>