using System.Text;
using Avalonia.Media;
using ModpackUpdater.Apps.Manager.Api.Model;
using ModpackUpdater.Apps.Manager.LangRes;
using ModpackUpdater.Apps.Manager.Ui;
using ModpackUpdater.Apps.Manager.Ui.Models.MainWindow;
using ModpackUpdater.Apps.Manager.Ui.Models.UpdatesCollectorViewMode;
using ModpackUpdater.Manager;
using OfficeOpenXml;
using OfficeOpenXml.Table;
using Pilz.UI.AvaloniaUI.Dialogs;

namespace ModpackUpdater.Apps.Manager.Features;

internal static class SharedFunctions
{
    private static readonly IImage? imageSourceSuccess = AppGlobals.Symbols.GetImageSource(AppSymbols.done);
    private static readonly IImage? imageSourceWorking = AppGlobals.Symbols.GetImageSource(AppSymbols.hourglass);
    private static readonly IImage? imageSourceFailed = AppGlobals.Symbols.GetImageSource(AppSymbols.close);
    
    public static async Task CheckActionHealthy(IMainApi api, params MainWindowGridRow[] rows)
    {
        var rowsCount = rows.Length;
        var failed = false;
        var factory = new ModpackFactory();
        
        api.Model.Progress.Start(rowsCount);
        
        for (var i = 0; i < rowsCount; i++)
        {
            var row = rows[i];
            if (row.SourceType == SourceType.DirectLink)
                continue;
            row.StateImage = imageSourceWorking;
    
            try
            {
                var result = await factory.ResolveSourceUrl(row.Action);
                failed = string.IsNullOrWhiteSpace(result);
            }
            catch
            {
                // Ignore
            }
            
            if (api.HasClosed)
                return;

            row.StateImage = failed ? imageSourceFailed : imageSourceSuccess;
            api.Model.Progress.Set(i);
        }
    
        api.Model.Progress.Stop();
    }

    public static async Task<bool> CollectUpdates(IMainApi api, params InstallAction[] actions)
    {
        if (api.Model.CurrentWorkspace?.UpdateInfos is null || api.Model.CurrentTreeNodes is null)
            return false;

        // Collect updates
        var result = await AvaloniaFlyoutBase.Show(new UpdatesCollectorView(api.Model.CurrentWorkspace, actions), api.MainWindow);
        if (api.HasClosed || result.Result is not ModUpdates resultUpdates)
            return false;

        // Collect versions with changes
        var updates = resultUpdates.List.Where(update => update.Origin.SourceTag != update.AvailableVersions[update.NewVersion].Tag).ToList();

        // Path install actions
        foreach (var update in updates)
        {
            var sourceTag = update.AvailableVersions[update.NewVersion].Tag;
            if (api.Model.CurrentGridRows?.FirstOrDefault(n => n.Action == update.Origin) is { } row)
                row.SourceTag = sourceTag;
            else
                update.Origin.SourceTag = sourceTag;
        }

        // Create update actions
        var updateSet = new UpdateInfo();
        foreach (var update in updates)
        {
            updateSet.Actions.Add(new()
            {
                InheritFrom = update.Origin.Id,
            });
        }
        api.Model.CurrentWorkspace.UpdateInfos.Updates.Insert(0, updateSet);
        
        // Add update to ui
        api.Model.CurrentTreeNodes[1].Nodes.Insert(0, new ActionSetTreeNode(updateSet));

        return true;
    }

    public static async Task FindNewDirectLinks(IMainApi api, params MainWindowGridRow[] rows)
    {
        var factory = new ModpackFactory();
        
        api.Model.Progress.Start(rows.Length);
        
        for (var i = 0; i < rows.Length; i++)
        {
            var row = rows[i];
            if (row.SourceType == SourceType.DirectLink)
                continue;
            row.StateImage = imageSourceWorking;

            try
            {
                row.SourceUrl = await factory.ResolveSourceUrl(row.Action);
                row.StateImage = imageSourceSuccess;
            }
            catch (Exception)
            {
                row.StateImage = imageSourceFailed;
            }
            
            if (api.HasClosed)
                return;
            api.Model.Progress.Set(i);
        }
    
        api.Model.Progress.Stop();
    }

    public static void ClearDirectLinks(IMainApi api, params MainWindowGridRow[] rows)
    {
        api.Model.Progress.Start(rows.Length);

        for (var i = 0; i < rows.Length; i++)
        {
            var row = rows[i];
            if (row.SourceType != SourceType.DirectLink)
                row.SourceUrl = null;
            row.StateImage = null;
            api.Model.Progress.Set(i);
        }

        api.Model.Progress.Stop();
    }

    public static string GenerateChangelog(InstallInfos installInfos, UpdateInfo updateInfos)
    {
        var log = new StringBuilder();

        foreach (var action in updateInfos.Actions.OrderBy(n => n.Type))
        {
            // Create copy
            var copy = new UpdateAction();
            ModpackInstaller.DuplicateTo(action, copy);

            // Resolve inherit
            if (!string.IsNullOrWhiteSpace(copy.InheritFrom))
                ModpackInstaller.ResolveInherit(copy, installInfos);

            if (string.IsNullOrWhiteSpace(copy.Name) || copy.Type != UpdateActionType.Update)
                continue;

            // Append bullet
            log.Append('-');

            // Append action indicator
            log.Append(' ');
            log.Append("⚒️");

            // Append name
            log.Append(' ');
            log.Append("**");
            log.Append(copy.Name);
            log.Append("**");

            // Append new version
            if (!string.IsNullOrWhiteSpace(copy.SourceTag))
            {
                log.Append(' ');
                log.Append('`');
                log.Append(copy.SourceTag);
                log.Append('`');
            }

            // Append new line
            log.AppendLine();
        }

        return log.ToString().TrimEnd();
    }

    public static string GenerateModlistAsMarkdown(InstallInfos installInfos)
    {
        var sb = new StringBuilder();
        sb.Append("|" + ActionsListLangRes.Col_Name);
        sb.Append("|" + ActionsListLangRes.Col_SrcTag);
        sb.Append("|" + ActionsListLangRes.Col_Side);
        sb.Append("|" + ActionsListLangRes.Col_SrcType);
        sb.Append("|" + ActionsListLangRes.Col_SrcOwner);
        sb.Append("|" + ActionsListLangRes.Col_SrcName);
        sb.AppendLine("|");
        sb.AppendLine("|---|---|---|---|---|---|");

        // Rows
        foreach (var action in installInfos.Actions.OrderBy(n => n.Name))
        {
            if (action.IsExtra || action.IsZip || string.IsNullOrWhiteSpace(action.Id) || !action.Id.StartsWith("mod:"))
                continue;

            if (string.IsNullOrWhiteSpace(action.Website))
                sb.Append($"|{action.Name}");
            else
                sb.Append($"|[{action.Name}]({action.Website})");

            if (string.IsNullOrWhiteSpace(action.SourceUrl))
                sb.Append($"|{action.SourceTag}");
            else
                sb.Append($"|[{action.SourceTag}]({action.GetSourceUrl(installInfos.Version)})");

            sb.Append($"|{action.Side.ToString()}");
            sb.Append($"|{action.SourceType}");
            sb.Append($"|{action.SourceOwner}");
            sb.Append($"|{action.SourceName}");

            sb.AppendLine("|");
        }

        return sb.ToString().TrimEnd();
    }

    public static ExcelPackage GenerateModlistAsExcel(InstallInfos installInfos)
    {
        var pkg = new ExcelPackage();
        var ws = pkg.Workbook.Worksheets.Add(string.Format(GeneralLangRes.ModlistForVersionX, installInfos.Version));
        var cr = 1;
        var cc = 1;

        // Header
        ws.Cells[cr, cc++].Value = ActionsListLangRes.Col_Name;
        ws.Cells[cr, cc++].Value = ActionsListLangRes.Col_SrcTag;
        ws.Cells[cr, cc++].Value = ActionsListLangRes.Col_Side;
        ws.Cells[cr, cc++].Value = ActionsListLangRes.Col_SrcType;
        ws.Cells[cr, cc++].Value = ActionsListLangRes.Col_SrcOwner;
        ws.Cells[cr, cc++].Value = ActionsListLangRes.Col_SrcName;
        cr += 1;
        cc = 1;

        // Rows
        foreach (var action in installInfos.Actions.OrderBy(n => n.Name))
        {
            if (action.IsExtra || action.IsZip || string.IsNullOrWhiteSpace(action.Id) || !action.Id.StartsWith("mod:"))
                continue;

            var cellName = ws.Cells[cr, cc++];
            cellName.Value = action.Name;
            if (!string.IsNullOrWhiteSpace(action.Website))
                cellName.SetHyperlink(new Uri(action.Website));

            var cellTag = ws.Cells[cr, cc++];
            cellTag.Value = string.IsNullOrWhiteSpace(action.SourceTag) ? "direct link" : action.SourceTag;
            if (!string.IsNullOrWhiteSpace(action.SourceUrl))
                cellTag.SetHyperlink(new Uri(action.GetSourceUrl(installInfos.Version)));

            ws.Cells[cr, cc++].Value = action.Side.ToString();
            ws.Cells[cr, cc++].Value = action.SourceType;
            ws.Cells[cr, cc++].Value = action.SourceOwner;
            ws.Cells[cr, cc++].Value = action.SourceName;

            cr += 1;
            cc = 1;
        }

        // Styling
        cc = 1;
        ws.Column(cc++).Width = 30;
        ws.Column(cc++).Width = 20;
        ws.Column(cc++).Width = 10;
        ws.Column(cc++).Width = 20;
        ws.Column(cc++).Width = 20;
        ws.Column(cc++).Width = 30;
        var tableDef = ws.Tables.Add(ws.Cells[1, 1, cr - 1, cc - 1], "Table");
        tableDef.TableStyle = TableStyles.Medium16;
        tableDef.ShowHeader = true;

        return pkg;
    }
}