generate-icon.swift

#!/usr/bin/env swift
// generate-icon.swift — Generate a mic icon for the app using SF Symbols
// Usage: swift generate-icon.swift <output-dir>
// Creates AppIcon.icns in the output directory.

import AppKit
import Foundation

let outputDir = CommandLine.arguments.count > 1
    ? CommandLine.arguments[1]
    : FileManager.default.currentDirectoryPath

// Create a 1024x1024 mic icon
func createMicIcon(size: CGFloat) -> NSImage {
    let image = NSImage(size: NSSize(width: size, height: size))
    image.lockFocus()

    // Background: rounded rectangle with gradient
    let rect = NSRect(x: 0, y: 0, width: size, height: size)
    let cornerRadius = size * 0.22 // macOS icon corner radius

    let path = NSBezierPath(roundedRect: rect, xRadius: cornerRadius, yRadius: cornerRadius)

    // Gradient background: warm orange to red
    let gradient = NSGradient(colors: [
        NSColor(red: 1.0, green: 0.45, blue: 0.2, alpha: 1.0),  // warm orange
        NSColor(red: 0.9, green: 0.2, blue: 0.3, alpha: 1.0),   // red
    ])!
    gradient.draw(in: path, angle: -45)

    // Draw SF Symbol mic
    if let sfImage = NSImage(systemSymbolName: "mic.fill", accessibilityDescription: nil) {
        let config = NSImage.SymbolConfiguration(pointSize: size * 0.5, weight: .medium)
        let configured = sfImage.withSymbolConfiguration(config)!

        // Get the symbol's size for centering
        let symbolSize = configured.size
        let x = (size - symbolSize.width) / 2
        let y = (size - symbolSize.height) / 2

        // Draw white mic symbol
        NSColor.white.set()
        let symbolRect = NSRect(x: x, y: y, width: symbolSize.width, height: symbolSize.height)
        configured.draw(in: symbolRect, from: .zero, operation: .sourceOver, fraction: 1.0)
    }

    image.unlockFocus()
    return image
}

// Generate icon at various sizes
let sizes: [(Int, String)] = [
    (16, "icon_16x16"),
    (32, "icon_16x16@2x"),
    (32, "icon_32x32"),
    (64, "icon_32x32@2x"),
    (128, "icon_128x128"),
    (256, "icon_128x128@2x"),
    (256, "icon_256x256"),
    (512, "icon_256x256@2x"),
    (512, "icon_512x512"),
    (1024, "icon_512x512@2x"),
]

let iconsetDir = (outputDir as NSString).appendingPathComponent("AppIcon.iconset")
try? FileManager.default.removeItem(atPath: iconsetDir)
try! FileManager.default.createDirectory(atPath: iconsetDir, withIntermediateDirectories: true)

for (size, name) in sizes {
    let image = createMicIcon(size: CGFloat(size))
    let tiffData = image.tiffRepresentation!
    let bitmap = NSBitmapImageRep(data: tiffData)!
    let pngData = bitmap.representation(using: .png, properties: [:])!
    let filePath = (iconsetDir as NSString).appendingPathComponent("\(name).png")
    try! pngData.write(to: URL(fileURLWithPath: filePath))
}

print("Iconset created at \(iconsetDir)")
print("Run: iconutil --convert icns \(iconsetDir)")