@namespace Oqtane.Modules.Admin.Pages
@inherits ModuleBase
@inject NavigationManager NavigationManager
@inject IPageService PageService
@inject IThemeService  ThemeService

<table class="table table-borderless">
    <tr>
        <td>
            <label for="Name" class="control-label">Name: </label>
        </td>
        <td>
            <input class="form-control" @bind="@name" />
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Path: </label>
        </td>
        <td>
            <input class="form-control" @bind="@path" />
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Parent: </label>
        </td>
        <td>
            <select class="form-control" @onchange="(e => ParentChanged(e))">
                <option value="-1">&lt;Site Root&gt;</option>
                @foreach (Page page in pages)
                {
                    if (page.PageId.ToString() == parentid)
                    {
                        <option value="@(page.PageId)" selected>@(new string('-', page.Level * 2))@(page.Name)</option>
                    }
                    else
                    {
                        <option value="@(page.PageId)">@(new string('-', page.Level * 2))@(page.Name)</option>
                    }
                }
            </select>
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Move : </label>
        </td>
        <td>
            <select class="form-control" @bind="@insert">
                @if (parentid == currentparentid)
                {
                    <option value="=">&lt;Maintain Current Location&gt;</option>
                }
                <option value="<<">To Beginning</option>
                @if (children != null && children.Count > 0)
                {
                    <option value="<">Before</option>
                    <option value=">">After</option>
                }
                <option value=">>">To End</option>
            </select>
            @if (children != null && children.Count > 0 && (insert == "<" || insert == ">"))
            {
                <select class="form-control" @bind="@childid">
                    <option value="-1">&lt;Select Page&gt;</option>
                    @foreach (Page page in children)
                    {
                        <option value="@(page.PageId)">@(page.Name)</option>
                    }
                </select>
            }
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Navigation? </label>
        </td>
        <td>
            <select class="form-control" @bind="@isnavigation">
                <option value="True">Yes</option>
                <option value="False">No</option>
            </select>
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Personalizable? </label>
        </td>
        <td>
            <select class="form-control" @bind="@ispersonalizable">
                <option value="True">Yes</option>
                <option value="False">No</option>
            </select>
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Default Mode? </label>
        </td>
        <td>
            <select class="form-control" @bind="@mode">
                <option value="view">View Mode</option>
                <option value="edit">Edit Mode</option>
            </select>
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Theme: </label>
        </td>
        <td>
            <select class="form-control" @onchange="(e => ThemeChanged(e))">
                <option value="">&lt;Select Theme&gt;</option>
                @foreach (KeyValuePair<string, string> item in themes)
                {
                    if (item.Key == themetype)
                    {
                        <option value="@item.Key" selected>@item.Value</option>
                    }
                    else
                    {
                        <option value="@item.Key">@item.Value</option>
                    }
                }
            </select>
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Layout: </label>
        </td>
        <td>
            <select class="form-control" @bind="@layouttype">
                <option value="">&lt;Select Layout&gt;</option>
                @foreach (KeyValuePair<string, string> panelayout in panelayouts)
                {
                    <option value="@panelayout.Key">@panelayout.Value</option>
                }
            </select>
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Icon: </label>
        </td>
        <td>
            <input class="form-control" @bind="@icon" />
        </td>
    </tr>
    <tr>
        <td>
            <label for="Name" class="control-label">Permissions: </label>
        </td>
        <td>
            <PermissionGrid EntityName="Page" Permissions="@permissions" @ref="permissiongrid" />
        </td>
    </tr>
</table>
<button type="button" class="btn btn-success" @onclick="SavePage">Save</button>
<NavLink class="btn btn-secondary" href="@NavigateUrl()">Cancel</NavLink>
<br />
<br />
<AuditInfo CreatedBy="@createdby" CreatedOn="@createdon" ModifiedBy="@modifiedby" ModifiedOn="@modifiedon" DeletedBy="@deletedby" DeletedOn="@deletedon"></AuditInfo>

@code {
    public override SecurityAccessLevel SecurityAccessLevel { get { return SecurityAccessLevel.Admin; } }

    Dictionary<string, string> themes = new Dictionary<string, string>();
    Dictionary<string, string> panelayouts = new Dictionary<string, string>();

    List<Page> pages;
    int PageId;
    string name;
    string path;
    string currentparentid;
    string parentid;
    string insert = "=";
    List<Page> children;
    int childid = -1;
    string isnavigation;
    string ispersonalizable;
    string mode;
    string themetype;
    string layouttype;
    string icon;
    string permissions;
    string createdby;
    DateTime createdon;
    string modifiedby;
    DateTime modifiedon;
    string deletedby;
    DateTime? deletedon;

    PermissionGrid permissiongrid;

    protected override async Task OnInitializedAsync()
    {
        try
        {
            pages = PageState.Pages;
            children = PageState.Pages.Where(item => item.ParentId == null).ToList();

            themes = ThemeService.GetThemeTypes(PageState.Themes);

            PageId = Int32.Parse(PageState.QueryString["id"]);
            Page page = PageState.Pages.Where(item => item.PageId == PageId).FirstOrDefault();
            if (page != null)
            {
                name = page.Name;
                path = page.Path;
                if (path.Contains("/"))
                {
                    path = path.Substring(path.LastIndexOf("/") + 1);
                }
                if (page.ParentId == null)
                {
                    parentid = "";
                }
                else
                {
                    parentid = page.ParentId.ToString();
                }
                currentparentid = parentid;
                isnavigation = page.IsNavigation.ToString();
                ispersonalizable = page.IsPersonalizable.ToString();
                mode = (page.EditMode) ? "edit" : "view";
                themetype = page.ThemeType;
                panelayouts = ThemeService.GetPaneLayoutTypes(PageState.Themes, themetype);
                layouttype = page.LayoutType;
                icon = page.Icon;
                permissions = page.Permissions;
                createdby = page.CreatedBy;
                createdon = page.CreatedOn;
                modifiedby = page.ModifiedBy;
                modifiedon = page.ModifiedOn;
                deletedby = page.DeletedBy;
                deletedon = page.DeletedOn;
            }
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Loading Page {PageId} {Error}", PageId, ex.Message);
            AddModuleMessage("Error Loading Page", MessageType.Error);
        }
    }

    private async void ParentChanged(ChangeEventArgs e)
    {
        try
        {
            parentid = (string)e.Value;
            if (parentid == "-1")
            {
                children = PageState.Pages.Where(item => item.ParentId == null).ToList();
            }
            else
            {
                children = PageState.Pages.Where(item => item.ParentId == int.Parse(parentid)).ToList();
            }
            if (parentid == currentparentid)
            {
                insert = "=";
            }
            else
            {
                insert = ">>";
            }
            StateHasChanged();
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Loading Child Pages For Parent {PageId} {Error}", parentid, ex.Message);
            AddModuleMessage("Error Loading Child Pages For Parent", MessageType.Error);
        }
    }

    private async void ThemeChanged(ChangeEventArgs e)
    {
        try
        {
            themetype = (string)e.Value;
            if (themetype != "")
            {
                panelayouts = ThemeService.GetPaneLayoutTypes(PageState.Themes, themetype);
            }
            else
            {
                panelayouts = new Dictionary<string, string>();
            }
            StateHasChanged();
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Loading Pane Layouts For Theme {ThemeType} {Error}", themetype, ex.Message);
            AddModuleMessage("Error Loading Pane Layouts For Theme", MessageType.Error);
        }
    }

    private async Task SavePage()
    {
        Page page = null;
        try
        {
            if (name != "" && !string.IsNullOrEmpty(themetype) && (panelayouts.Count == 0 || !string.IsNullOrEmpty(layouttype)))
            {
                page = PageState.Pages.Where(item => item.PageId == PageId).FirstOrDefault();
                string currentpath = page.Path;

                page.Name = name;
                if (path == "" && name.ToLower() != "home")
                {
                    path = name;
                }
                if (path.Contains("/"))
                {
                    path = path.Substring(path.LastIndexOf("/") + 1);
                }
                if (string.IsNullOrEmpty(parentid))
                {
                    page.ParentId = null;
                    page.Path = Utilities.GetFriendlyUrl(path);
                }
                else
                {
                    page.ParentId = Int32.Parse(parentid);
                    Page parent = PageState.Pages.Where(item => item.PageId == page.ParentId).FirstOrDefault();
                    if (parent.Path == "")
                    {
                        page.Path = Utilities.GetFriendlyUrl(parent.Name) + "/" + Utilities.GetFriendlyUrl(path);
                    }
                    else
                    {
                        page.Path = parent.Path + "/" + Utilities.GetFriendlyUrl(path);
                    }
                }
                if (insert != "=")
                {
                    Page child;
                    switch (insert)
                    {
                        case "<<":
                            page.Order = 0;
                            break;
                        case "<":
                            child = PageState.Pages.Where(item => item.PageId == childid).FirstOrDefault();
                            page.Order = child.Order - 1;
                            break;
                        case ">":
                            child = PageState.Pages.Where(item => item.PageId == childid).FirstOrDefault();
                            page.Order = child.Order + 1;
                            break;
                        case ">>":
                            page.Order = int.MaxValue;
                            break;
                    }
                }
                page.IsNavigation = (isnavigation == null ? true : Boolean.Parse(isnavigation));
                page.EditMode = (mode == "edit" ? true : false);
                page.ThemeType = themetype;
                page.LayoutType = (layouttype == null ? "" : layouttype);
                page.Icon = (icon == null ? "" : icon);
                page.Permissions = permissiongrid.GetPermissions();

                if (page.ThemeType == PageState.Site.DefaultThemeType)
                {
                    page.ThemeType = "";
                }
                if (page.LayoutType == PageState.Site.DefaultLayoutType)
                {
                    page.LayoutType = "";
                }
                page.IsPersonalizable = (ispersonalizable == null ? false : Boolean.Parse(ispersonalizable));
                page.UserId = null;

                await PageService.UpdatePageAsync(page);
                await PageService.UpdatePageOrderAsync(page.SiteId, page.PageId, page.ParentId);
                if (currentparentid == "")
                {
                    await PageService.UpdatePageOrderAsync(page.SiteId, page.PageId, null);
                }
                else
                {
                    await PageService.UpdatePageOrderAsync(page.SiteId, page.PageId, int.Parse(currentparentid));
                }

                // update child paths
                if (parentid != currentparentid)
                {
                    foreach (Page p in PageState.Pages.Where(item => item.Path.StartsWith(currentpath)))
                    {
                        p.Path = p.Path.Replace(currentpath, page.Path);
                        await PageService.UpdatePageAsync(p);
                    }
                }

                await logger.LogInformation("Page Saved {Page}", page);
                NavigationManager.NavigateTo(NavigateUrl(page.Path, Reload.Site));
            }
            else
            {
                AddModuleMessage("You Must Provide Page Name And Theme", MessageType.Warning);
            }
        }
        catch (Exception ex)
        {
            await logger.LogError(ex, "Error Saving Page {Page} {Error}", page, ex.Message);
            AddModuleMessage("Error Saving Page", MessageType.Error);
        }
    }
}