#!/bin/bash
# awake-build-icon — Generate a simple app icon for Awake and package it as .icns

set -euo pipefail

OUT_ICNS="${1:-$HOME/.local/bin/Awake.app/Contents/Resources/Awake.icns}"
WORKDIR="$(mktemp -d /tmp/awake-icon.XXXXXX)"
ICONSET_DIR="$WORKDIR/Awake.iconset"
BASE_PNG="$WORKDIR/base.png"

mkdir -p "$ICONSET_DIR"

swift - "$BASE_PNG" <<'SWIFT'
import AppKit

let outputPath = CommandLine.arguments[1]
let size = CGSize(width: 1024, height: 1024)

let rep = NSBitmapImageRep(
    bitmapDataPlanes: nil,
    pixelsWide: Int(size.width),
    pixelsHigh: Int(size.height),
    bitsPerSample: 8,
    samplesPerPixel: 4,
    hasAlpha: true,
    isPlanar: false,
    colorSpaceName: .deviceRGB,
    bytesPerRow: 0,
    bitsPerPixel: 0
)!
rep.size = size

NSGraphicsContext.saveGraphicsState()
NSGraphicsContext.current = NSGraphicsContext(bitmapImageRep: rep)

let rect = CGRect(origin: .zero, size: size)
NSColor.clear.setFill()
rect.fill()

let outer = NSBezierPath(roundedRect: rect.insetBy(dx: 72, dy: 72), xRadius: 220, yRadius: 220)
let bg = NSGradient(colors: [
    NSColor(calibratedRed: 0.12, green: 0.16, blue: 0.18, alpha: 1),
    NSColor(calibratedRed: 0.20, green: 0.25, blue: 0.21, alpha: 1)
])!
bg.draw(in: outer, angle: -90)

NSColor(calibratedWhite: 1, alpha: 0.08).setStroke()
outer.lineWidth = 10
outer.stroke()

let innerGlow = NSBezierPath(roundedRect: rect.insetBy(dx: 120, dy: 120), xRadius: 180, yRadius: 180)
NSColor(calibratedRed: 0.48, green: 0.97, blue: 0.52, alpha: 0.08).setFill()
innerGlow.fill()

let bolt = NSBezierPath()
bolt.move(to: CGPoint(x: 565, y: 818))
bolt.line(to: CGPoint(x: 414, y: 564))
bolt.line(to: CGPoint(x: 520, y: 564))
bolt.line(to: CGPoint(x: 448, y: 276))
bolt.line(to: CGPoint(x: 626, y: 516))
bolt.line(to: CGPoint(x: 515, y: 516))
bolt.close()

NSColor(calibratedRed: 0.95, green: 0.99, blue: 0.73, alpha: 1).setFill()
bolt.fill()

let boltGlow = NSShadow()
boltGlow.shadowBlurRadius = 36
boltGlow.shadowColor = NSColor(calibratedRed: 0.55, green: 1.0, blue: 0.60, alpha: 0.45)
boltGlow.shadowOffset = .zero
boltGlow.set()
NSColor(calibratedRed: 0.61, green: 1.0, blue: 0.67, alpha: 0.16).setFill()
bolt.fill()

NSGraphicsContext.restoreGraphicsState()

guard let data = rep.representation(using: .png, properties: [:]) else {
    fputs("failed to encode icon PNG\n", stderr)
    exit(1)
}
try data.write(to: URL(fileURLWithPath: outputPath))
SWIFT

cp "$BASE_PNG" "$ICONSET_DIR/icon_512x512@2x.png"
sips -z 16 16     "$BASE_PNG" --out "$ICONSET_DIR/icon_16x16.png" >/dev/null
sips -z 32 32     "$BASE_PNG" --out "$ICONSET_DIR/icon_16x16@2x.png" >/dev/null
sips -z 32 32     "$BASE_PNG" --out "$ICONSET_DIR/icon_32x32.png" >/dev/null
sips -z 64 64     "$BASE_PNG" --out "$ICONSET_DIR/icon_32x32@2x.png" >/dev/null
sips -z 128 128   "$BASE_PNG" --out "$ICONSET_DIR/icon_128x128.png" >/dev/null
sips -z 256 256   "$BASE_PNG" --out "$ICONSET_DIR/icon_128x128@2x.png" >/dev/null
sips -z 256 256   "$BASE_PNG" --out "$ICONSET_DIR/icon_256x256.png" >/dev/null
sips -z 512 512   "$BASE_PNG" --out "$ICONSET_DIR/icon_256x256@2x.png" >/dev/null
sips -z 512 512   "$BASE_PNG" --out "$ICONSET_DIR/icon_512x512.png" >/dev/null

mkdir -p "$(dirname "$OUT_ICNS")"
iconutil -c icns "$ICONSET_DIR" -o "$OUT_ICNS"

echo "$OUT_ICNS"