namespace Explorer.Domain;

public sealed class Source
{
    public long Id { get; set; }
    public required string StableKey { get; set; }
    public SourceKind Kind { get; set; }
    public required string DisplayName { get; set; }
    public string? VolumeGuid { get; set; }
    public long? VolumeSerial { get; set; }
    public string? Filesystem { get; set; }
    public string? Label { get; set; }
    public long? CapacityBytes { get; set; }
    public string? DeviceInstanceId { get; set; }
    public string? LastRootPath { get; set; }
    public SourceStatus Status { get; set; } = SourceStatus.Offline;
    public DateTimeOffset? LastSeenUtc { get; set; }
    public DateTimeOffset? LastIndexedUtc { get; set; }
    public long? UsnJournalId { get; set; }
    public long? UsnNext { get; set; }
    public long ScanGeneration { get; set; }
    public string? LastError { get; set; }
    public bool IsIndexed => LastIndexedUtc is not null;
}

public sealed class VolumeFingerprint
{
    public SourceKind Kind { get; init; }
    public string? VolumeGuid { get; init; }
    public long? VolumeSerial { get; init; }
    public string? Filesystem { get; init; }
    public string? Label { get; init; }
    public long? CapacityBytes { get; init; }
    public long? FreeBytes { get; init; }
    public string? DeviceInstanceId { get; init; }
    public required string RootPath { get; init; }
    public string? DisplayName { get; init; }
}

public readonly record struct VolumeSpace(long? CapacityBytes, long? FreeBytes);

public sealed class IndexEntry
{
    public long Id { get; set; }
    public long SourceId { get; set; }
    public long? ParentId { get; set; }
    public required string Name { get; set; }
    public required string NameNorm { get; set; }
    public string? Extension { get; set; }
    public bool IsDirectory { get; set; }
    public long SizeBytes { get; set; }
    public long AggregateSize { get; set; }
    public int ChildFileCount { get; set; }
    public int ChildDirCount { get; set; }
    public DateTimeOffset? CreatedUtc { get; set; }
    public DateTimeOffset? ModifiedUtc { get; set; }
    public DateTimeOffset LastSeenUtc { get; set; }
    public DateTimeOffset? LastIndexedUtc { get; set; }
    public int Attributes { get; set; }
    public long? FileId { get; set; }
    public long? ParentFileId { get; set; }
    public int ReparseTag { get; set; }
    public EntryStatus Status { get; set; } = EntryStatus.Present;
    public DateTimeOffset? DeletedUtc { get; set; }
    public required string PathRel { get; set; }
    public byte[]? ContentHash { get; set; }
    public HashState HashState { get; set; }
    public long ScanGeneration { get; set; }
    public long? AllocatedSizeBytes { get; set; }
    public CloudAvailability? CloudAvailability { get; set; }
}

public sealed class ExcludeRule
{
    public long Id { get; set; }
    public string Scope { get; set; } = "global";
    public long? SourceId { get; set; }
    public ExcludeKind Kind { get; set; }
    public required string Pattern { get; set; }
    public bool Enabled { get; set; } = true;
}

public sealed class ScanJob
{
    public long Id { get; set; }
    public long SourceId { get; set; }
    public ScanKind Kind { get; set; }
    public ScanJobStatus Status { get; set; }
    public DateTimeOffset? StartedUtc { get; set; }
    public DateTimeOffset? FinishedUtc { get; set; }
    public long FilesSeen { get; set; }
    public long DirsSeen { get; set; }
    public long BytesSeen { get; set; }
    public string? ResumePath { get; set; }
    public int ErrorCount { get; set; }
    public string? LastError { get; set; }
    public string? FolderPathRel { get; set; }
}

public sealed class ScanError
{
    public long Id { get; set; }
    public long JobId { get; set; }
    public string? Path { get; set; }
    public string? Kind { get; set; }
    public string? Message { get; set; }
    public DateTimeOffset Utc { get; set; }
}

public sealed class TransferJob
{
    public long Id { get; set; }
    public TransferOp Op { get; set; }
    public required string SourcePath { get; set; }
    public string? DestinationPath { get; set; }
    public TransferStatus Status { get; set; }
    public long? BytesTotal { get; set; }
    public long BytesDone { get; set; }
    public long FilesDone { get; set; }
    public long FilesTotal { get; set; }
    public string? CurrentPath { get; set; }
    public DateTimeOffset CreatedUtc { get; set; }
    public DateTimeOffset? StartedUtc { get; set; }
    public string? Error { get; set; }
    public int RetryCount { get; set; }
    public string? WaitReason { get; set; }
    public int SortOrder { get; set; }
    public bool Dismissed { get; set; }
    public IReadOnlyList<string> AdditionalSources { get; set; } = [];
}

public sealed class FileSystemItem
{
    public required string FullPath { get; init; }
    public required string Name { get; init; }
    public bool IsDirectory { get; init; }
    public long SizeBytes { get; init; }
    public DateTimeOffset? CreatedUtc { get; init; }
    public DateTimeOffset? ModifiedUtc { get; init; }
    public int Attributes { get; init; }
    public long? FileId { get; init; }
    public int ReparseTag { get; init; }
    public long? AllocatedSizeBytes { get; init; }
    public CloudPresence? Cloud { get; init; }
    public LocationInfo Location { get; init; } = LocationInfo.None;
    public SizeKnowledge SizeKnowledge { get; init; } = SizeKnowledge.Calculated;
    public string? DisplayName { get; init; }
    public long? FreeSpaceBytes { get; init; }
    public long? CapacityBytes { get; init; }
    public bool AvailableToImport { get; init; }
    public ItemHydrationFlags Hydration { get; init; } = ItemHydrationFlags.All;
    public bool IsReparsePoint => (Attributes & AttributeFlags.ReparsePoint) != 0;

    public FileSystemItem Overlay(
        long? sizeBytes = null,
        DateTimeOffset? createdUtc = null,
        DateTimeOffset? modifiedUtc = null,
        int? attributes = null,
        long? fileId = null,
        int? reparseTag = null,
        long? allocatedSizeBytes = null,
        CloudPresence? cloud = null,
        LocationInfo? location = null,
        SizeKnowledge? sizeKnowledge = null,
        string? displayName = null,
        long? freeSpaceBytes = null,
        long? capacityBytes = null,
        bool? availableToImport = null,
        ItemHydrationFlags? hydration = null)
        => new()
        {
            FullPath = FullPath,
            Name = Name,
            IsDirectory = IsDirectory,
            SizeBytes = sizeBytes ?? SizeBytes,
            CreatedUtc = createdUtc ?? CreatedUtc,
            ModifiedUtc = modifiedUtc ?? ModifiedUtc,
            Attributes = attributes ?? Attributes,
            FileId = fileId ?? FileId,
            ReparseTag = reparseTag ?? ReparseTag,
            AllocatedSizeBytes = allocatedSizeBytes ?? AllocatedSizeBytes,
            Cloud = cloud ?? Cloud,
            Location = location ?? Location,
            SizeKnowledge = sizeKnowledge ?? SizeKnowledge,
            DisplayName = displayName ?? DisplayName,
            FreeSpaceBytes = freeSpaceBytes ?? FreeSpaceBytes,
            CapacityBytes = capacityBytes ?? CapacityBytes,
            AvailableToImport = availableToImport ?? AvailableToImport,
            Hydration = hydration ?? Hydration
        };
}

public sealed record CloudPresence(
    string? ProviderId,
    CloudAvailability Availability,
    long LogicalSizeBytes,
    long? AllocatedSizeBytes,
    bool MayHydrateOnRead,
    string? StatusText = null);

public sealed record ScanProgress
{
    public long JobId { get; init; }
    public long SourceId { get; init; }
    public required string CurrentPath { get; init; }
    public long FilesSeen { get; init; }
    public long DirsSeen { get; init; }
    public long BytesSeen { get; init; }
    public int ErrorCount { get; init; }
    public ScanJobStatus Status { get; init; }
}

public sealed class FolderListing
{
    public required string Path { get; init; }
    public bool IsOffline { get; init; }
    public IReadOnlyList<FileSystemItem> Items { get; init; } = [];
    public string? Error { get; init; }
}

public sealed class FileRelation
{
    public long Id { get; set; }
    public long LeftEntryId { get; init; }
    public long RightEntryId { get; init; }
    public FileRelationKind Kind { get; init; }
    public FileRelationOrigin Origin { get; init; } = FileRelationOrigin.User;
    public DateTimeOffset CreatedUtc { get; init; }
}