#!/bin/bash
#
#  make_icns.sh — Metrika
#
#  Author:  Simon-Pierre Boucher
#  Contact: contact@spboucher.ai
#  Copyright © 2026 Simon-Pierre Boucher. All rights reserved.
#
#  Rasterizes Assets/AppIcon/metrika-icon.svg to all required sizes and
#  produces Assets/AppIcon/Metrika.icns via iconutil (CLAUDE.md §11).
#  Requires rsvg-convert (brew install librsvg); falls back to qlmanage.
#
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
SVG="$ROOT/Assets/AppIcon/metrika-icon.svg"
ICONSET="$ROOT/Assets/AppIcon/Metrika.iconset"
ICNS="$ROOT/Assets/AppIcon/Metrika.icns"

[[ -f "$SVG" ]] || { echo "❌ missing $SVG"; exit 1; }
rm -rf "$ICONSET" && mkdir -p "$ICONSET"

rasterize() { # rasterize <px> <outfile>
  local px="$1" out="$2"
  if command -v rsvg-convert >/dev/null; then
    rsvg-convert -w "$px" -h "$px" "$SVG" -o "$out"
  else
    qlmanage -t -s "$px" -o "$(dirname "$out")" "$SVG" >/dev/null
    mv "$(dirname "$out")/$(basename "$SVG").png" "$out"
  fi
}

# macOS iconset naming: size @1x and @2x pairs.
for size in 16 32 128 256 512; do
  rasterize "$size"        "$ICONSET/icon_${size}x${size}.png"
  rasterize "$((size*2))"  "$ICONSET/icon_${size}x${size}@2x.png"
done

iconutil -c icns "$ICONSET" -o "$ICNS"
rm -rf "$ICONSET"
echo "✅ $ICNS"