package database

import "time"

// File represents a file record in the database
type File struct {
	Path       string
	MTime      time.Time
	CTime      time.Time
	Size       int64
	Mode       uint32
	UID        uint32
	GID        uint32
	LinkTarget string // empty for regular files, target path for symlinks
}

// IsSymlink returns true if this file is a symbolic link
func (f *File) IsSymlink() bool {
	return f.LinkTarget != ""
}

// FileChunk represents the mapping between files and chunks
type FileChunk struct {
	Path      string
	Idx       int
	ChunkHash string
}

// Chunk represents a chunk record in the database
type Chunk struct {
	ChunkHash string
	SHA256    string
	Size      int64
}

// Blob represents a blob record in the database
type Blob struct {
	ID               string
	Hash             string // Can be empty until blob is finalized
	CreatedTS        time.Time
	FinishedTS       *time.Time // nil if not yet finalized
	UncompressedSize int64
	CompressedSize   int64
	UploadedTS       *time.Time // nil if not yet uploaded
}

// BlobChunk represents the mapping between blobs and chunks
type BlobChunk struct {
	BlobID    string
	ChunkHash string
	Offset    int64
	Length    int64
}

// ChunkFile represents the reverse mapping of chunks to files
type ChunkFile struct {
	ChunkHash  string
	FilePath   string
	FileOffset int64
	Length     int64
}

// Snapshot represents a snapshot record in the database
type Snapshot struct {
	ID               string
	Hostname         string
	VaultikVersion   string
	StartedAt        time.Time
	CompletedAt      *time.Time // nil if still in progress
	FileCount        int64
	ChunkCount       int64
	BlobCount        int64
	TotalSize        int64   // Total size of all referenced files
	BlobSize         int64   // Total size of all referenced blobs (compressed and encrypted)
	CompressionRatio float64 // Compression ratio (BlobSize / TotalSize)
}

// IsComplete returns true if the snapshot has completed
func (s *Snapshot) IsComplete() bool {
	return s.CompletedAt != nil
}

// SnapshotFile represents the mapping between snapshots and files
type SnapshotFile struct {
	SnapshotID string
	FilePath   string
}

// SnapshotBlob represents the mapping between snapshots and blobs
type SnapshotBlob struct {
	SnapshotID string
	BlobID     string
	BlobHash   string // Denormalized for easier manifest generation
}