import Foundation

/// One screenshot plus everything needed to place it on a PDF page.
public struct Capture: Codable, Sendable, Identifiable, Equatable {
    public let id: UUID
    /// 1-based position within its session. Stable; never renumbered on delete.
    public let sequence: Int
    /// File name only (e.g. "001-A1B2C3D4.png"), never a path.
    /// The directory is always the owning session's directory.
    public let fileName: String
    /// Pixel dimensions of the PNG on disk.
    public let pixelWidth: Int
    public let pixelHeight: Int
    /// Backing scale the capture was taken at (2.0 on Retina). Needed so the PDF
    /// composer lays the image out at its true point size, not its pixel size.
    public let scale: CGFloat
    /// When the screenshot was taken. Always stored as an absolute instant;
    /// rendered in Asia/Dubai wherever a human sees it.
    public let capturedAt: Date

    public init(
        id: UUID,
        sequence: Int,
        fileName: String,
        pixelWidth: Int,
        pixelHeight: Int,
        scale: CGFloat,
        capturedAt: Date
    ) {
        self.id = id
        self.sequence = sequence
        self.fileName = fileName
        self.pixelWidth = pixelWidth
        self.pixelHeight = pixelHeight
        self.scale = scale
        self.capturedAt = capturedAt
    }

    /// True when the image is wider than it is tall. Drives page orientation.
    public var isLandscape: Bool {
        pixelWidth > pixelHeight
    }
}