using System.Text.Json;
using Microsoft.UI.Xaml.Media;
using Microsoft.UI.Xaml.Automation.Peers;
using Microsoft.UI.Xaml.Automation.Provider;
using XFEEDToolBox.Controls;
using XFEEDToolBox.Core.Models;
using XFEEDToolBox.Core.Outfitting;
using XFEEDToolBox.Views;
namespace XFEEDToolBox;

public partial class App
{
    private static async Task<object> RunRefitAppearanceProbeAsync(string directory)
    {
        static void Require(bool value,string message){if(!value)throw new InvalidOperationException(message);}
        static bool Colour(Brush? brush,byte red,byte green,byte blue)=>brush is SolidColorBrush b&&b.Color.R==red&&b.Color.G==green&&b.Color.B==blue;
        var fixture=GetArgument(Environment.GetCommandLineArgs(),"--refit-fixture")??throw new ArgumentException("Refit fixture is required.");
        var document=JsonSerializer.Deserialize<ShipRefitDocument>(await File.ReadAllTextAsync(fixture),ToolboxSettings.JsonOptions)!;
        MainWindow.AppWindow.Resize(new(2550,1650));
        AppShellPage.Current!.Navigate(typeof(RefitPage));await Task.Delay(180);
        var page=(RefitPage)AppShellPage.Current.CurrentPage!;ViewModel.LoadRefitProbeDocument(document);
        var deadline=DateTime.UtcNow.AddSeconds(15);while(ViewModel.RefitOverview.Capacity is null&&DateTime.UtcNow<deadline)await Task.Delay(50);
        Require(ViewModel.RefitOverview.Capacity>0&&ViewModel.RefitOverview.Pitch>0,"Editor overview did not load calculated power and handling values.");
        var overview=(RefitShipOverview)page.FindName("RefitOverviewPanel");var scroller=(ScrollViewer)page.FindName("PageScroll");
        var tabs=(SelectorBar)page.FindName("InspectorTabs");tabs.SelectedItem=tabs.Items[0];await Task.Delay(120);
        Require(overview.IsLoaded&&overview.ActualHeight>50,"Missing bottom ship overview.");
        Require(Colour(Descendants(tabs.Items[0]).OfType<Grid>().Single(g=>g.Name=="PART_ContainerRoot").Background,255,128,0),"Selected data tab must have the game's orange fill.");
        Require(Colour(Descendants(tabs.Items[0]).OfType<TextBlock>().Single(t=>t.Name=="PART_TextVisual").Foreground,0,0,0),"Selected tab text must be black.");
        Require(Colour(Descendants(tabs.Items[1]).OfType<TextBlock>().Single(t=>t.Name=="PART_TextVisual").Foreground,255,128,0),"Unselected tab text must be orange.");
        Require(Math.Abs(tabs.Items[0].ActualWidth-tabs.Items[1].ActualWidth)<1&&tabs.Items[0].ActualWidth>tabs.ActualWidth*.45,"Inspector tabs must occupy equal halves.");
        static void NoScroll(SelectorBar selector)
        {
            var items=Descendants(selector).OfType<ItemsView>().Single();var scroll=items.ScrollView;
            Require(scroll is not null&&scroll.HorizontalScrollBarVisibility==ScrollingScrollBarVisibility.Hidden&&scroll.HorizontalScrollMode==ScrollingScrollMode.Disabled,"Selector scrolling must be disabled.");
            Require(scroll!.ScrollableWidth<1,$"Selector {selector.Name} contents exceed their viewport: selector={selector.ActualWidth}, items={items.ActualWidth}, viewport={scroll.ViewportWidth}, extent={scroll.ExtentWidth}, widths={string.Join(',',selector.Items.Select(i=>i.Width))}.");
        }
        NoScroll(tabs);
        var overviewTabs=(SelectorBar)overview.FindName("OverviewTabs");Require(overviewTabs.Items.Count==4,"Four ship overview views are required.");
        var preview=(ShipModelView)overview.FindName("OverviewShipModel");
        deadline=DateTime.UtcNow.AddSeconds(15);while((!preview.IsRendering||preview.Frames<2)&&DateTime.UtcNow<deadline)await Task.Delay(60);
        Require(preview.IsRendering&&!preview.ShowPedestal&&preview.HologramColor.R==255&&preview.HologramColor.G==128&&preview.HologramColor.B==0,"Shared ship preview must be orange and omit its pedestal.");
        var frame=await preview.CaptureFrameAsync();var orangePixels=0;
        for(var i=0;i<frame.Pixels.Length;i+=4)if(frame.Pixels[i+2]>20&&frame.Pixels[i+2]>frame.Pixels[i+1]&&frame.Pixels[i+1]>frame.Pixels[i]*2)orangePixels++;
        Require(orangePixels>30,"Actual GPU preview pixels must use the orange accent.");
        var wideHeights=new List<double>();var narrowHeights=new List<double>();
        using(var frozen=await preview.FreezeForXamlProbeAsync())
        {
            for(var index=0;index<4;index++)
            {
                overviewTabs.SelectedItem=overviewTabs.Items[index];await Task.Delay(100);NoScroll(overviewTabs);
                Require(preview.ActualWidth>70&&preview.ActualHeight>80&&preview.Visibility==Visibility.Visible,"Each overview must keep its shared ship preview visible.");
                wideHeights.Add(overview.ActualHeight);
                await CaptureRefinementElementAsync(overview,Path.Combine(directory,$"ship-overview-{index}.png"));
            }
        }
        Require(wideHeights.Max()-wideHeights.Min()<1,"Wide overview changes height between views: "+string.Join(",",wideHeights));
        overviewTabs.SelectedItem=overviewTabs.Items[0];await Task.Delay(80);
        var table=(ItemsControl)page.FindName("ModulePropertyList");var mass=ViewModel.RefitProperties.Single(p=>p.OriginalName=="Mass");
        Require(Descendants(table).OfType<TextBlock>().Any(t=>t.Text==mass.Value&&Colour(t.Foreground,255,128,0)),"Module property values must be orange.");
        Require(Descendants(table).OfType<TextBlock>().Any(t=>t.Text==mass.Name&&Colour(t.Foreground,128,128,128)),"Module property labels must be neutral grey.");
        await CaptureRefinementElementAsync((Border)page.FindName("InspectorPanel"),Path.Combine(directory,"module-data.png"));
        await CaptureRefinementElementAsync(overview,Path.Combine(directory,"ship-overview-wide.png"));
        await CapturePageAsync(page,Path.Combine(directory,"ship-editor-wide.png"));
        var position=overview.TransformToVisual(page).TransformPoint(new(0,0));
        scroller.ChangeView(null,scroller.ScrollableHeight,null,true);await Task.Delay(80);
        var after=overview.TransformToVisual(page).TransformPoint(new(0,0));Require(Math.Abs(position.Y-after.Y)<1,"Bottom overview must remain visible when the editor scrolls.");
        tabs.SelectedItem=tabs.Items[1];await Task.Delay(80);
        Require(((FrameworkElement)page.FindName("ModuleEngineeringView")).Visibility==Visibility.Visible&&Colour(Descendants(tabs.Items[1]).OfType<Grid>().Single(g=>g.Name=="PART_ContainerRoot").Background,255,128,0),"Engineering selection did not switch the panel and orange state.");
        Require(Colour(Descendants(tabs.Items[1]).OfType<PathIcon>().Single().Foreground,0,0,0),"Selected engineering hexagon must follow the black selected foreground.");
        await CaptureRefinementElementAsync((Border)page.FindName("InspectorPanel"),Path.Combine(directory,"engineering-tab.png"));
        tabs.SelectedItem=tabs.Items[0];await Task.Delay(80);
        Require(ReferenceEquals(mass,ViewModel.RefitProperties.Single(p=>p.OriginalName=="Mass")),"Changing inspector tabs replaced bound property rows.");
        var oldPower=ViewModel.RefitOverview.Deployed;var weapon=document.Slots.First(s=>s.Category=="hardpoint"&&s.Module is {Enabled:true});
        var changed=document with{Slots=document.Slots.Select(s=>s.Slot==weapon.Slot?s with{Module=s.Module! with{Enabled=false}}:s).ToArray()};
        ViewModel.LoadRefitProbeDocument(changed);deadline=DateTime.UtcNow.AddSeconds(10);
        while(!(ViewModel.RefitOverview.Deployed<oldPower)&&DateTime.UtcNow<deadline)await Task.Delay(50);
        Require(ViewModel.RefitOverview.Deployed<oldPower,"Ship overview did not update after changing the simulated modules.");
        MainWindow.AppWindow.Resize(new(1560,1200));await Task.Delay(200);page.UpdateLayout();
        NoScroll(tabs);NoScroll(overviewTabs);
        var power=(Border)overview.FindName("PowerPanel");Require(Grid.GetRow(power)==1&&power.ActualWidth>200,"Narrow layout must place power below specifications.");
        await CaptureRefinementElementAsync(overview,Path.Combine(directory,"ship-overview-narrow.png"));
        narrowHeights.Add(overview.ActualHeight);
        using(var frozen=await preview.FreezeForXamlProbeAsync())
        {
            for(var index=1;index<4;index++)
            {
                overviewTabs.SelectedItem=overviewTabs.Items[index];await Task.Delay(100);NoScroll(overviewTabs);
                Require(preview.ActualWidth>70&&preview.Visibility==Visibility.Visible,"Narrow overview must preserve its model.");
                narrowHeights.Add(overview.ActualHeight);
                await CaptureRefinementElementAsync(overview,Path.Combine(directory,$"ship-overview-narrow-{index}.png"));
            }
        }
        Require(narrowHeights.Max()-narrowHeights.Min()<1,"Narrow overview changes height between views: "+string.Join(",",narrowHeights));
        overviewTabs.SelectedItem=overviewTabs.Items[0];await Task.Delay(60);
        await CapturePageAsync(page,Path.Combine(directory,"ship-editor-narrow.png"));
        var selectedSlot=ViewModel.RefitSlot;var currentDocument=ViewModel.RefitDocument;
        var detailsButton=(HyperlinkButton)overview.FindName("ShipDetailsButton");
        ((IInvokeProvider)new HyperlinkButtonAutomationPeer(detailsButton).GetPattern(PatternInterface.Invoke)).Invoke();await Task.Delay(200);
        Require(AppShellPage.Current.CurrentPage is RefitShipDetailsPage,"Whole-ship details must open an independent page.");
        var details=(RefitShipDetailsPage)AppShellPage.Current.CurrentPage!;
        Require(ViewModel.RefitDetailSections.Any(s=>s.Record.Key=="weapons")&&ViewModel.RefitDetailSections.Any(s=>s.Record.Key=="ship"),"Details are missing weapon or complete ship values.");
        Require(ViewModel.RefitDetailSections.Count(s=>s.Record.Key.StartsWith("module:"))==changed.Slots.Count(s=>s.Module is not null),"Details omit installed modules.");
        await CapturePageAsync(details,Path.Combine(directory,"ship-details-narrow.png"));
        MainWindow.AppWindow.Resize(new(2550,1650));await Task.Delay(160);
        await CapturePageAsync(details,Path.Combine(directory,"ship-details-wide.png"));
        var detailsScroller=(ScrollViewer)details.FindName("DetailsScroll");
        async Task ShowDetailSection(Expander section)
        {
            section.IsExpanded=true;await Task.Delay(100);details.UpdateLayout();
            var top=section.TransformToVisual((UIElement)detailsScroller.Content).TransformPoint(new(0,0)).Y;
            detailsScroller.ChangeView(null,top,null,true);await Task.Delay(100);
            Require(detailsScroller.ScrollableWidth<1,"Details must not overflow horizontally.");
        }
        foreach(var header in new[]{"武器与伤害","容量、温控与造价","供电与配电",changed.Slots.First(s=>s.Module is not null).Caption})
        {
            var section=Descendants(details).OfType<Expander>().First(e=>e.Header as string==header);await ShowDetailSection(section);
            await CapturePageAsync(details,Path.Combine(directory,"ship-details-"+(header.StartsWith("武器")?"weapons":header.StartsWith("容量")?"capacity":header.StartsWith("供电")?"power":"module")+".png"));
        }
        var shipValues=Descendants(details).OfType<Expander>().First(e=>e.Header as string=="整舰计算参数");await ShowDetailSection(shipValues);
        await CapturePageAsync(details,Path.Combine(directory,"ship-details-all-ship-values.png"));
        var backButton=(Button)details.FindName("BackToRefitButton");
        ((IInvokeProvider)new ButtonAutomationPeer(backButton).GetPattern(PatternInterface.Invoke)).Invoke();await Task.Delay(150);
        Require(ReferenceEquals(page,AppShellPage.Current.CurrentPage)&&ReferenceEquals(currentDocument,ViewModel.RefitDocument)&&ReferenceEquals(selectedSlot,ViewModel.RefitSlot),"Returning from details changed the editor or loadout.");
        return new{bottomOverviewVisible=true,orangeSelectedTabWithBlackText=true,equalWidthTabs=true,greyPropertyLabelsAndOrangeValues=true,
            propertiesRetainIdentity=true,overviewFollowsEditedLoadout=true,overviewFixedWhileScrolling=true,narrowLayoutStacksPower=true,fourOverviewViews=true,sharedOrangeShipPreview=true,pedestalHidden=true,selectorHorizontalScrollingDisabled=true,orangePixels,
            uniformWideHeights=wideHeights,uniformNarrowHeights=narrowHeights,wholeShipDetailsPage=true,allInstalledModuleDetails=true,returnPreservesEditor=true,
            ViewModel.RefitOverview.SpeedText,ViewModel.RefitOverview.RotationText,ViewModel.RefitOverview.JumpText,ViewModel.RefitOverview.CapacityText,realGameActionsInvoked=false};
    }
}