using System.IO;
using AcDream.App.UI;
using AcDream.App.UI.Layout;
using DatReaderWriter;
using DatReaderWriter.Options;

namespace AcDream.App.Tests.UI.Layout;

/// <summary>
/// Campaign FA slice FA3, item 7: extends the ACDREAM_PROBE_LIVE_MOUNT pattern
/// (the #372/#375/#378 lesson — fixture-green alone is NOT acceptance for
/// anything mounted) to the four-tab social panel. Asserts the PRODUCTION
/// mount path resolves: the tab host as <see cref="UiTabPanel"/> with its
/// 4-entry table, all four page elements, the fellowship empty/full frame
/// pair, the allegiance signature elements, and non-empty captions on the
/// tab buttons (the #375 resolver class). Also dumps the raw tab table so
/// its button→page pairing + default entry can be recorded — coordinator
/// addendum, docs/research/2026-08-11-fa-panel-structure.md §10.
/// </summary>
public sealed class SocialPanelLiveMountProbeTests
{
    [Fact]
    public void ProbeLiveMountShapes()
    {
        if (Environment.GetEnvironmentVariable("ACDREAM_PROBE_LIVE_MOUNT") != "1")
            return;

        var datDir = Environment.GetEnvironmentVariable("ACDREAM_DAT_DIR")
            ?? Path.Combine(
                Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
                "Documents",
                "Asheron's Call");
        using var dats = new DatCollection(datDir, DatAccessType.Read);
        var strings = new DatStringResolver(dats);

        ElementInfo? root = LayoutImporter.ImportInfos(
            dats, SocialPanelController.HostLayoutId, SocialPanelController.SlotElementId);
        Assert.NotNull(root);
        ImportedLayout layout = LayoutImporter.Build(
            root!, _ => (1u, 8, 8), null, null, strings.Resolve);

        Console.WriteLine(
            $"[socialprobe] root id=0x{root!.Id:X8} type={root.Type} "
            + $"({root.X},{root.Y} {root.Width}x{root.Height}) children={root.Children.Count} "
            + $"restorePrevious={(root.TryGetEffectiveBool(RetailPanelUiController.RestorePreviousPropertyId, out bool rp) && rp)}");
        foreach (ElementInfo c in root.Children)
        {
            string p12 = c.TryGetEffectiveProperty(0x12u, out var v12) ? $"0x{v12.UnsignedValue:X8}" : "ABSENT";
            string p57 = c.TryGetEffectiveProperty(0x57u, out var v57) ? $"{v57.Kind}=0x{v57.UnsignedValue:X8}" : "ABSENT";
            Console.WriteLine(
                $"[socialprobe]   root-child 0x{c.Id:X8} type=0x{c.Type:X8} ({c.X},{c.Y} {c.Width}x{c.Height}) "
                + $"kids={c.Children.Count} P0x12={p12} P0x57={p57}");
        }
        {
            string rootP57 = root.TryGetEffectiveProperty(0x57u, out var rv57) ? $"{rv57.Kind}=0x{rv57.UnsignedValue:X8}" : "ABSENT";
            Console.WriteLine($"[socialprobe] root P0x57={rootP57}");
        }

        UiTabPanel tabs = Assert.IsType<UiTabPanel>(layout.Root);
        Console.WriteLine($"[socialprobe] tab table entries={tabs.Tabs.Count}");
        foreach (UiTabTableEntry t in tabs.Tabs)
            Console.WriteLine(
                $"[socialprobe]   button=0x{t.ButtonElementId:X8} page=0x{t.PageElementId:X8} default={t.IsDefault}");
        Assert.True(tabs.Tabs.Count >= 4);

        // Production mount: activate behavior exactly like SocialPanelController.ActivateTabs.
        tabs.ActivateTabBehavior();
        Assert.Empty(tabs.UnresolvedEntries);

        foreach ((uint pageId, string name) in new[]
        {
            (0x10000513u, "Friends"),
            (0x10000291u, "Allegiance"),
            (0x10000292u, "Fellowship"),
            (0x1000054Au, "Squelch"),
        })
        {
            UiElement? page = UiElement.FindDescendant(tabs, pageId);
            Console.WriteLine(
                $"[socialprobe] page {name} 0x{pageId:X8} -> {(page is null ? "MISSING" : page.GetType().Name)}");
            Assert.NotNull(page);
        }

        // Fellowship empty/full frame pair.
        foreach ((uint id, string name) in new[]
        {
            (0x1000026Bu, "NotInAFellowshipFrame"),
            (0x10000275u, "InAFellowshipFrame"),
        })
        {
            UiElement? el = UiElement.FindDescendant(tabs, id);
            Console.WriteLine($"[socialprobe] fellowship frame {name} 0x{id:X8} -> {(el is null ? "MISSING" : el.GetType().Name)}");
            Assert.NotNull(el);
        }

        // Allegiance signature elements.
        foreach ((uint id, string name) in new[]
        {
            (0x10000255u, "MonarchField"),
            (0x1000025Au, "PatronField"),
            (0x10000260u, "VassalListBox"),
            (0x10000263u, "SwearButton"),
            (0x10000264u, "BreakButton"),
            (0x10000265u, "KickButton"),
        })
        {
            UiElement? el = UiElement.FindDescendant(tabs, id);
            Console.WriteLine($"[socialprobe] allegiance element {name} 0x{id:X8} -> {(el is null ? "MISSING" : el.GetType().Name)}");
            Assert.NotNull(el);
        }

        // 0x10000492 is authored TWICE inside the allegiance page (monarch
        // block child AND patron block child) — count occurrences under the
        // allegiance page root specifically, not the whole tree.
        UiElement? allegiancePage = UiElement.FindDescendant(tabs, 0x10000291u);
        Assert.NotNull(allegiancePage);
        int passupCount = CountDescendants(allegiancePage!, 0x10000492u);
        Console.WriteLine($"[socialprobe] 0x10000492 occurrences under allegiance page = {passupCount}");

        // Tab button captions — non-empty (the #375 resolver class: a missing
        // string resolver renders blank captions even though the layout mounts).
        foreach (UiTabTableEntry t in tabs.Tabs)
        {
            UiElement? button = UiElement.FindDescendant(tabs, t.ButtonElementId);
            string? caption = button switch
            {
                UiText text => text.LinesProvider?.Invoke() is { Count: > 0 } lines ? lines[0].Text : null,
                UiButton btn => btn.Label,
                _ => null,
            };
            Console.WriteLine(
                $"[socialprobe] tab button 0x{t.ButtonElementId:X8} ({button?.GetType().Name}) caption='{caption}'");
            Assert.False(string.IsNullOrEmpty(caption));
        }

        // U6: containment of the fellowship empty/full frames.
        ElementInfo? notInFellowshipFrame = FindInfo(root, 0x1000026Bu);
        ElementInfo? inFellowshipFrame = FindInfo(root, 0x10000275u);
        Console.WriteLine(
            $"[socialprobe] 0x1000026B (NotInAFellowshipFrame) children: "
            + string.Join(",", (notInFellowshipFrame?.Children ?? new()).ConvertAll(c => $"0x{c.Id:X8}")));
        Console.WriteLine(
            $"[socialprobe] 0x10000275 (InAFellowshipFrame) children: "
            + string.Join(",", (inFellowshipFrame?.Children ?? new()).ConvertAll(c => $"0x{c.Id:X8}")));

        // Dump two levels of children under each page slot for U3/U4/U6/U7 sweep.
        foreach (uint pageId in new[] { 0x10000513u, 0x10000291u, 0x10000292u, 0x1000054Au })
        {
            ElementInfo? pageInfo = FindInfo(root, pageId);
            if (pageInfo is null)
            {
                Console.WriteLine($"[socialprobe] page-info 0x{pageId:X8} MISSING from ElementInfo tree");
                continue;
            }
            Console.WriteLine(
                $"[socialprobe] page-info 0x{pageId:X8} P0x57={(pageInfo.TryGetEffectiveProperty(0x57u, out var p57) ? p57.UnsignedValue.ToString() : "ABSENT")} children={pageInfo.Children.Count}");
            DumpInfoTree(pageInfo, 1, maxDepth: 3);
        }

        // Friends/Squelch row templates — find the name-text child.
        foreach ((uint tLayout, uint tElement, string name) in new[]
        {
            (0x2100005Du, 0x10000519u, "FriendsRow"),
            (0x21000060u, 0x10000541u, "SquelchRow"),
        })
        {
            ElementInfo? row = LayoutImporter.ImportInfos(dats, tLayout, tElement);
            if (row is null)
            {
                Console.WriteLine($"[socialprobe] {name} template 0x{tLayout:X8}/0x{tElement:X8} IMPORT NULL");
                continue;
            }
            Console.WriteLine($"[socialprobe] {name} template:");
            DumpInfoTree(row, 1, maxDepth: 3);
        }
    }

    private static void DumpInfoTree(ElementInfo info, int depth, int maxDepth)
    {
        if (depth > maxDepth) return;
        string templates = info.TemplateList.Count > 0
            ? $" templates={info.TemplateList.Count}[{string.Join(",", info.TemplateList.ConvertAll(t => $"0x{t.TemplateLayoutId:X8}/0x{t.TemplateElementId:X8}"))}] scrollbar=0x{info.ScrollbarElementId:X8}"
            : "";
        Console.WriteLine(
            $"[socialprobe] {new string(' ', depth * 2)}0x{info.Id:X8} type=0x{info.Type:X8} "
            + $"({info.X},{info.Y} {info.Width}x{info.Height}) kids={info.Children.Count}{templates}");
        foreach (ElementInfo c in info.Children)
            DumpInfoTree(c, depth + 1, maxDepth);
    }

    private static int CountDescendants(UiElement root, uint id)
    {
        int count = root.DatElementId == id ? 1 : 0;
        foreach (UiElement child in root.Children)
            count += CountDescendants(child, id);
        return count;
    }

    private static ElementInfo? FindInfo(ElementInfo root, uint id)
    {
        if (root.Id == id) return root;
        foreach (ElementInfo c in root.Children)
        {
            ElementInfo? found = FindInfo(c, id);
            if (found is not null) return found;
        }
        return null;
    }
}