using System.ComponentModel.DataAnnotations;
using PlotLine.Models;

namespace PlotLine.ViewModels;

public sealed class OnboardingWizardViewModel
{
    public string CurrentStep { get; set; } = OnboardingSteps.Welcome;
    public int StepNumber { get; set; } = 1;
    public int TotalSteps { get; set; } = 6;
    public string? WritingJourney { get; set; }
    public string? WritingSoftware { get; set; }
    public int? ProjectID { get; set; }
    public int? BookID { get; set; }
    public string? SelectedProjectName { get; set; }
    public string? SelectedBookTitle { get; set; }
    public bool IsMicrosoftWordPath => string.Equals(WritingSoftware, WritingSoftwareValues.MicrosoftWord, StringComparison.Ordinal);
    public CompanionPresenceViewModel CompanionPresence { get; set; } = new();
    public ManuscriptScanStateViewModel ScanState { get; set; } = new();
    public IReadOnlyList<OnboardingOptionViewModel> Options { get; set; } = [];
    public IReadOnlyList<OnboardingProjectOptionViewModel> ProjectOptions { get; set; } = [];
    public IReadOnlyList<OnboardingBookOptionViewModel> BookOptions { get; set; } = [];
    public ProjectOnboardingForm ProjectForm { get; set; } = new();
    public BookOnboardingForm BookForm { get; set; } = new();
}

public sealed class OnboardingOptionViewModel
{
    public string Value { get; init; } = string.Empty;
    public string Title { get; init; } = string.Empty;
    public string Description { get; init; } = string.Empty;
    public string? Badge { get; init; }
}

public sealed class WritingJourneyOnboardingForm
{
    [Required(ErrorMessage = "Choose the closest writing stage before continuing.")]
    public string? WritingJourney { get; set; }
}

public sealed class WritingSoftwareOnboardingForm
{
    [Required(ErrorMessage = "Choose the software you write in before continuing.")]
    public string? WritingSoftware { get; set; }
}

public static class OnboardingSelectionModes
{
    public const string Create = "Create";
    public const string Select = "Select";
}

public sealed class ProjectOnboardingForm
{
    [Required]
    public string Mode { get; set; } = OnboardingSelectionModes.Create;

    public int? SelectedProjectID { get; set; }

    [StringLength(200)]
    public string? ProjectName { get; set; }

    public string? Description { get; set; }
}

public sealed class BookOnboardingForm
{
    [Required]
    public string Mode { get; set; } = OnboardingSelectionModes.Create;

    public int? SelectedBookID { get; set; }

    [StringLength(200)]
    public string? BookTitle { get; set; }

    [StringLength(200)]
    public string? Subtitle { get; set; }

    [Range(1, int.MaxValue, ErrorMessage = "Target word count must be greater than zero.")]
    public int? TargetWordCount { get; set; }
}

public sealed class OnboardingProjectOptionViewModel
{
    public int ProjectID { get; init; }
    public string ProjectName { get; init; } = string.Empty;
    public string Description { get; init; } = string.Empty;
}

public sealed class OnboardingBookOptionViewModel
{
    public int BookID { get; init; }
    public string DisplayTitle { get; init; } = string.Empty;
    public string Detail { get; init; } = string.Empty;
}

public sealed class OnboardingNudgeViewModel
{
    public bool ShouldShow { get; init; }
    public string ButtonText { get; init; } = "Start setup";
    public string Title { get; init; } = "Set up PlotDirector around the way you write";
    public string Description { get; init; } = "Answer a few quick questions so PlotDirector can guide your first project.";
    public bool IsCompanionPresence { get; init; }
    public bool CompanionConnected { get; init; }
}

public sealed class CompanionPresenceViewModel
{
    public bool IsConnected { get; init; }
    public bool DocumentOpen { get; init; }
    public string Status { get; init; } = "Offline";
    public string? CompanionVersion { get; init; }
    public string? CurrentDocumentName { get; init; }
    public DateTime? LastHeartbeatUtc { get; init; }
}

public sealed class ManuscriptScanStateViewModel
{
    public string Status { get; init; } = ManuscriptScanStatuses.NotStarted;
    public string ReviewStatus { get; init; } = ManuscriptScanReviewStatuses.ScanComplete;
    public string Message { get; init; } = string.Empty;
    public int? PercentComplete { get; init; }
    public int ChapterCount { get; init; }
    public int SceneCount { get; init; }
    public int CharacterCandidateCount { get; init; }
    public int TotalWordCount { get; init; }
    public Guid? PreviewID { get; init; }
    public bool IsRunning => string.Equals(Status, ManuscriptScanStatuses.Running, StringComparison.Ordinal);
    public bool IsComplete => string.Equals(Status, ManuscriptScanStatuses.Complete, StringComparison.Ordinal);
    public bool IsFailed => string.Equals(Status, ManuscriptScanStatuses.Failed, StringComparison.Ordinal);
}

public sealed class ManuscriptScanReviewViewModel
{
    public Guid PreviewID { get; init; }
    public string ReviewStatus { get; init; } = ManuscriptScanReviewStatuses.ScanComplete;
    public string DocumentTitle { get; init; } = "Word manuscript";
    public string SelectedProjectName { get; init; } = string.Empty;
    public string SelectedBookTitle { get; init; } = string.Empty;
    public int TotalWordCount { get; init; }
    public int ChapterCount { get; init; }
    public int SceneCount { get; init; }
    public int CharacterCandidateCount { get; init; }
    public int SelectedChapterCount { get; init; }
    public int SelectedSceneCount { get; init; }
    public int SelectedCharacterCount { get; init; }
    public int SelectedWordCount { get; init; }
    public IReadOnlyList<ManuscriptScanReviewChapterViewModel> Chapters { get; init; } = [];
    public IReadOnlyList<ManuscriptScanReviewCharacterViewModel> CharacterCandidates { get; init; } = [];
    public IReadOnlyList<ManuscriptScanExistingCharacterOptionViewModel> ExistingCharacterOptions { get; init; } = [];
}

public sealed class ManuscriptScanReviewChapterViewModel
{
    public string TemporaryChapterKey { get; init; } = string.Empty;
    public int ChapterNumber { get; init; }
    public string Title { get; init; } = string.Empty;
    public string ReviewTitle { get; init; } = string.Empty;
    public bool Include { get; init; }
    public int WordCount { get; init; }
    public IReadOnlyList<ManuscriptScanReviewSceneViewModel> Scenes { get; init; } = [];
}

public sealed class ManuscriptScanReviewSceneViewModel
{
    public string TemporarySceneKey { get; init; } = string.Empty;
    public string TemporaryChapterKey { get; init; } = string.Empty;
    public int SceneNumberWithinChapter { get; init; }
    public string? Title { get; init; }
    public string? ReviewTitle { get; init; }
    public bool Include { get; init; }
    public int WordCount { get; init; }
    public string? OpeningTextPreview { get; init; }
}

public sealed class ManuscriptScanReviewCharacterViewModel
{
    public string TemporaryCharacterKey { get; init; } = string.Empty;
    public string Name { get; init; } = string.Empty;
    public string ReviewName { get; init; } = string.Empty;
    public bool Include { get; init; }
    public int MentionCount { get; init; }
    public int QualityScore { get; init; }
    public string Category { get; init; } = "PossibleCharacter";
    public string? Reason { get; init; }
    public int? ExistingCharacterID { get; init; }
    public string? ExistingCharacterName { get; init; }
    public bool IsExistingCharacterMatch => ExistingCharacterID.HasValue;
}

public sealed class ManuscriptScanExistingCharacterOptionViewModel
{
    public int CharacterID { get; init; }
    public string CharacterName { get; init; } = string.Empty;
}

public sealed class ManuscriptScanReviewForm
{
    public Guid PreviewID { get; set; }
    public List<ManuscriptScanChapterReviewFormItem> Chapters { get; set; } = [];
    public List<ManuscriptScanSceneReviewFormItem> Scenes { get; set; } = [];
    public List<ManuscriptScanCharacterReviewFormItem> Characters { get; set; } = [];
}

public sealed class ManuscriptScanChapterReviewFormItem
{
    public string TemporaryChapterKey { get; set; } = string.Empty;
    public bool Include { get; set; }
    public string Title { get; set; } = string.Empty;
    public int ChapterNumber { get; set; }
}

public sealed class ManuscriptScanSceneReviewFormItem
{
    public string TemporarySceneKey { get; set; } = string.Empty;
    public string TemporaryChapterKey { get; set; } = string.Empty;
    public bool Include { get; set; }
    public string? Title { get; set; }
    public int SceneNumberWithinChapter { get; set; }
    public bool AllowZeroWords { get; set; }
}

public sealed class ManuscriptScanCharacterReviewFormItem
{
    public string TemporaryCharacterKey { get; set; } = string.Empty;
    public bool Include { get; set; }
    public string Name { get; set; } = string.Empty;
    public string Category { get; set; } = "PossibleCharacter";
    public int? ExistingCharacterID { get; set; }
}