using System.Text.Json.Serialization;

namespace PlotLine.Models;

public sealed class PlotLineImportPackage
{
    public string? PackageVersion { get; set; }
    public string? Source { get; set; }
    public ImportProjectDto Project { get; set; } = new();
    public List<ImportCharacterDto> Characters { get; set; } = [];
    public List<ImportLocationDto> Locations { get; set; } = [];
    public List<ImportPlotLineDto> PlotLines { get; set; } = [];
    public List<ImportStoryAssetDto> StoryAssets { get; set; } = [];
    public List<ImportBookDto> Books { get; set; } = [];

    [JsonExtensionData]
    public Dictionary<string, object>? ExtensionData { get; set; }
}

public sealed class ImportProjectDto
{
    public string Title { get; set; } = string.Empty;
    public string? Description { get; set; }
    public string? Notes { get; set; }
}

public sealed class ImportBookDto
{
    public string Title { get; set; } = string.Empty;
    public string? Subtitle { get; set; }
    public int SeriesOrder { get; set; }
    public bool DependsOnPreviousBook { get; set; }
    public string? Description { get; set; }
    public string? Notes { get; set; }
    public List<ImportChapterDto> Chapters { get; set; } = [];
}

public sealed class ImportCharacterDto
{
    public string Name { get; set; } = string.Empty;
    public string? DisplayName { get; set; }
    public string? ShortName { get; set; }
    public string? Role { get; set; }
    public int? Importance { get; set; }
    public string? Description { get; set; }
    public string? Notes { get; set; }
}

public sealed class ImportLocationDto
{
    public string Name { get; set; } = string.Empty;
    public string? DisplayName { get; set; }
    public string? Type { get; set; }
    public string? ParentLocationName { get; set; }
    public string? Description { get; set; }
    public string? Notes { get; set; }
}

public sealed class ImportPlotLineDto
{
    public string Name { get; set; } = string.Empty;
    public string? DisplayName { get; set; }
    public string? Type { get; set; }
    public int? Importance { get; set; }
    public string? Description { get; set; }
    public string? Notes { get; set; }
    public List<ImportPlotThreadDto> Threads { get; set; } = [];
}

public sealed class ImportPlotThreadDto
{
    public string Name { get; set; } = string.Empty;
    public string? DisplayName { get; set; }
    public string? Type { get; set; }
    public string? Status { get; set; }
    public int? Importance { get; set; }
    public string? Description { get; set; }
    public string? Notes { get; set; }
    public List<ImportThreadEventDto> Events { get; set; } = [];
}

public sealed class ImportThreadEventDto
{
    public string? SceneRef { get; set; }
    public int? BookOrder { get; set; }
    public int? ChapterOrder { get; set; }
    public int? SceneOrder { get; set; }
    public string? Title { get; set; }
    public string? EventType { get; set; }
    public string? Summary { get; set; }
    public string? Impact { get; set; }
    public int? Importance { get; set; }
    public string? Notes { get; set; }
}

public sealed class ImportStoryAssetDto
{
    public string Name { get; set; } = string.Empty;
    public string? DisplayName { get; set; }
    public string? Type { get; set; }
    public int? Importance { get; set; }
    public string? Description { get; set; }
    public string? Notes { get; set; }
    public string? InitialOwnerCharacterName { get; set; }
    public string? InitialLocationName { get; set; }
    public List<ImportAssetStateDto> States { get; set; } = [];
    public List<ImportAssetEventDto> Events { get; set; } = [];
}

public sealed class ImportAssetStateDto
{
    public string? SceneRef { get; set; }
    public int? BookOrder { get; set; }
    public int? ChapterOrder { get; set; }
    public int? SceneOrder { get; set; }
    public string? StateName { get; set; }
    public string? Description { get; set; }
    public string? Notes { get; set; }
}

public sealed class ImportAssetEventDto
{
    public string? SceneRef { get; set; }
    public int? BookOrder { get; set; }
    public int? ChapterOrder { get; set; }
    public int? SceneOrder { get; set; }
    public string? EventType { get; set; }
    public string? Title { get; set; }
    public string? Summary { get; set; }
    public string? CharacterName { get; set; }
    public string? LocationName { get; set; }
    public string? Notes { get; set; }
}

public sealed class ImportChapterDto
{
    public decimal ChapterNumber { get; set; }
    public string Title { get; set; } = string.Empty;
    public int Order { get; set; }
    public string? Summary { get; set; }
    public string? Notes { get; set; }
    public List<ImportSceneDto> Scenes { get; set; } = [];
}

public sealed class ImportSceneDto
{
    public decimal SceneNumber { get; set; }
    public string Title { get; set; } = string.Empty;
    public int Order { get; set; }
    public string? Summary { get; set; }
    public string? PovCharacterName { get; set; }
    public string? LocationName { get; set; }
    public string? DateTimeText { get; set; }
    public string? PurposeText { get; set; }
    public string? OutcomeText { get; set; }
    public string? Notes { get; set; }
    public List<ImportSceneCharacterDto> SceneCharacters { get; set; } = [];
}

public sealed class ImportSceneCharacterDto
{
    public string CharacterName { get; set; } = string.Empty;
    public string? RoleInScene { get; set; }
    public int? Importance { get; set; }
    public string? Notes { get; set; }
}

public sealed class ImportValidationResult
{
    public bool IsValid => Errors.Count == 0;
    public List<string> Errors { get; } = [];
    public List<string> Warnings { get; } = [];
}

public sealed class ImportPreview
{
    public PlotLineImportPackage? Package { get; init; }
    public ImportValidationResult Validation { get; init; } = new();
    public bool HasDuplicateProjectTitle { get; init; }
    public string? DuplicateImportProjectTitle { get; init; }
    public IReadOnlyList<ImportBookPreview> BookPreviews { get; init; } = [];
    public IReadOnlyList<string> UnmatchedPovNames { get; init; } = [];
    public IReadOnlyList<string> UnmatchedLocationNames { get; init; } = [];
    public IReadOnlyList<string> UnmatchedSceneCharacterNames { get; init; } = [];
    public IReadOnlyList<string> UnresolvedThreadEventReferences { get; init; } = [];
    public IReadOnlyList<string> UnresolvedAssetReferences { get; init; } = [];
    public IReadOnlyList<string> UnmatchedAssetOwnerNames { get; init; } = [];
    public IReadOnlyList<string> UnmatchedAssetLocationNames { get; init; } = [];
    public int BookCount => Package?.Books.Count ?? 0;
    public int CharacterCount => Package?.Characters.Count ?? 0;
    public int LocationCount => Package?.Locations.Count ?? 0;
    public int PlotLineCount => Package?.PlotLines.Count ?? 0;
    public int PlotThreadCount => Package?.PlotLines.Sum(plotLine => plotLine.Threads.Count) ?? 0;
    public int ThreadEventCount => Package?.PlotLines.Sum(plotLine => plotLine.Threads.Sum(thread => thread.Events.Count)) ?? 0;
    public int ResolvedThreadEventCount => Math.Max(0, ThreadEventCount - UnresolvedThreadEventReferences.Count);
    public int StoryAssetCount => Package?.StoryAssets.Count ?? 0;
    public int AssetStateCount => Package?.StoryAssets.Sum(asset => asset.States.Count) ?? 0;
    public int AssetEventCount => Package?.StoryAssets.Sum(asset => asset.Events.Count) ?? 0;
    public int ResolvedAssetStateCount => Math.Max(0, AssetStateCount - UnresolvedAssetReferences.Count(x => x.Contains("state", StringComparison.OrdinalIgnoreCase)));
    public int ResolvedAssetEventCount => Math.Max(0, AssetEventCount - UnresolvedAssetReferences.Count(x => x.Contains("event", StringComparison.OrdinalIgnoreCase)));
    public int ChapterCount => Package?.Books.Sum(book => book.Chapters.Count) ?? 0;
    public int SceneCount => Package?.Books.Sum(book => book.Chapters.Sum(chapter => chapter.Scenes.Count)) ?? 0;
    public int SceneCharacterAppearanceCount => Package?.Books.Sum(book => book.Chapters.Sum(chapter => chapter.Scenes.Sum(scene => scene.SceneCharacters.Count + AutoPovAppearanceCount(scene)))) ?? 0;

    private static int AutoPovAppearanceCount(ImportSceneDto scene)
        => !string.IsNullOrWhiteSpace(scene.PovCharacterName)
           && scene.SceneCharacters.All(x => !string.Equals(x.CharacterName?.Trim(), scene.PovCharacterName.Trim(), StringComparison.OrdinalIgnoreCase))
            ? 1
            : 0;
}

public sealed class ImportBookPreview
{
    public ImportBookDto Book { get; init; } = new();
    public int ChapterCount => Book.Chapters.Count;
    public int SceneCount => Book.Chapters.Sum(chapter => chapter.Scenes.Count);
    public IReadOnlyList<ImportChapterPreview> ChapterPreviews { get; init; } = [];
}

public sealed class ImportChapterPreview
{
    public ImportChapterDto Chapter { get; init; } = new();
    public int SceneCount => Chapter.Scenes.Count;
}

public sealed class ImportResult
{
    public bool Succeeded { get; init; }
    public int? ProjectID { get; init; }
    public string ProjectName { get; init; } = string.Empty;
    public int BooksCreated { get; init; }
    public int ChaptersCreated { get; init; }
    public int ScenesCreated { get; init; }
    public int CharactersCreated { get; init; }
    public int LocationsCreated { get; init; }
    public int SceneCharacterAppearancesCreated { get; init; }
    public int PlotLinesCreated { get; init; }
    public int PlotThreadsCreated { get; init; }
    public int ThreadEventsCreated { get; init; }
    public int StoryAssetsCreated { get; init; }
    public int AssetStatesCreated { get; init; }
    public int AssetEventsCreated { get; init; }
    public int AssetCustodyEventsCreated { get; init; }
    public IReadOnlyList<string> SkippedOptionalFields { get; init; } = [];
    public IReadOnlyList<string> UnresolvedWarnings { get; init; } = [];
    public string? TechnicalDetail { get; init; }
    public string Message { get; init; } = string.Empty;
}