path: root/makima/ios/Sources/Makima/Design/Components/Logo.swift

import SwiftUI

/// Makima concentric-ring logo.
/// Loads from bundled `makima-logo.svg` if present; otherwise falls back to
/// a Canvas-rendered concentric-ring approximation so the app always builds
/// even if the SVG copy step is skipped.
struct Logo: View {
    var size: CGFloat = 120

    var body: some View {
        Group {
            if let uiImage = Self.loadedSVG(named: "makima-logo") {
                Image(uiImage: uiImage)
                    .resizable()
                    .renderingMode(.template)
                    .foregroundStyle(Palette.accent)
            } else {
                Canvas { ctx, canvasSize in
                    let center = CGPoint(x: canvasSize.width / 2, y: canvasSize.height / 2)
                    let maxR = min(canvasSize.width, canvasSize.height) / 2
                    let rings = 5
                    for i in 0..<rings {
                        let t = CGFloat(i + 1) / CGFloat(rings)
                        let r = maxR * t
                        let rect = CGRect(x: center.x - r, y: center.y - r,
                                          width: r * 2, height: r * 2)
                        let shading = GraphicsContext.Shading.color(
                            Palette.accent.opacity(1.0 - Double(i) * 0.15)
                        )
                        ctx.stroke(Circle().path(in: rect), with: shading, lineWidth: 1.25)
                    }
                    let dotR = maxR * 0.06
                    ctx.fill(Circle().path(in: CGRect(x: center.x - dotR, y: center.y - dotR,
                                                     width: dotR * 2, height: dotR * 2)),
                             with: .color(Palette.accent))
                }
            }
        }
        .frame(width: size, height: size)
        .accessibilityLabel("Makima")
    }

    /// SwiftUI 18 doesn't natively decode SVG through UIImage, so we try PDF
    /// fallback first (Xcode auto-converts SVGs placed in asset catalogs to PDF).
    /// If the file ships as a raw `.svg` bundle resource, we decline and fall back
    /// to the Canvas drawing. This keeps M1 buildable without additional deps.
    private static func loadedSVG(named name: String) -> UIImage? {
        if let img = UIImage(named: name) { return img }
        return nil
    }
}