#!/bin/bash
set -euo pipefail

# ELF building
export MXL_SOURCE=/Users/jitten/extra/mxl
export MXL_BUILD="${MXL_SOURCE}/build/Darwin-Clang-Release"

WORK_DIR="$(mktemp -d)"
trap 'rm -rf "${WORK_DIR}"' EXIT

# libmxl.pc in the build tree hardcodes the install/ prefix; rewrite it so
# cgo's pkg-config lookup gets the build tree's lib/include dirs.
sed -e "s|${MXL_SOURCE}/install|${MXL_SOURCE}/build|g" \
    -e "s|^includedir=.*|includedir=${MXL_BUILD}/lib/include|" \
    "${MXL_BUILD}/lib/libmxl.pc" > "${WORK_DIR}/libmxl.pc"
export PKG_CONFIG_PATH="${WORK_DIR}:${MXL_BUILD}/lib${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH}"
export CGO_CFLAGS="-I${MXL_SOURCE}/lib/include"
export CGO_LDFLAGS="-L${MXL_BUILD}/lib"

PLAYER_ELF_PATH="./build/mxl-player"
go build \
    -trimpath \
    -ldflags="-s -w" \
    -o "${PLAYER_ELF_PATH}" \
    ./cmd/mxl-player

# MacOS .app package
export APP_BUNDLE="./release/mac/MXL-player.app"
rm -rf "${APP_BUNDLE}"
mkdir -p "${APP_BUNDLE}/Contents/MacOS"
mkdir -p "${APP_BUNDLE}/Contents/Frameworks"
mkdir -p "${APP_BUNDLE}/Contents/Resources"

cp "${PLAYER_ELF_PATH}" "${APP_BUNDLE}/Contents/MacOS/mxl-player"
chmod 0755 "${APP_BUNDLE}/Contents/MacOS/mxl-player"

# App icon
ICONSET="${WORK_DIR}/MXL-player.iconset"
mkdir -p "${ICONSET}"
for s in 16 32 128 256 512; do
    sips -z $s $s ./assets/mxl-on-blue-square.png \
        --out "${ICONSET}/icon_${s}x${s}.png" > /dev/null
    sips -z $((s*2)) $((s*2)) ./assets/mxl-on-blue-square.png \
        --out "${ICONSET}/icon_${s}x${s}@2x.png" > /dev/null
done
iconutil -c icns "${ICONSET}" \
    -o "${APP_BUNDLE}/Contents/Resources/AppIcon.icns"

# Info.plist
cat << EOF > "${APP_BUNDLE}/Contents/Info.plist"
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple/DTD PLIST 1.0//EN"
    "https://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleName</key>
    <string>MXL Player</string>

    <key>CFBundleDisplayName</key>
    <string>MXL Player</string>

    <key>CFBundleIdentifier</key>
    <string>io.github.jitten.mxl-player</string>

    <key>CFBundleExecutable</key>
    <string>mxl-player</string>

    <key>CFBundlePackageType</key>
    <string>APPL</string>

    <key>CFBundleShortVersionString</key>
    <string>0.1.0</string>

    <key>CFBundleVersion</key>
    <string>1</string>

    <key>LSMinimumSystemVersion</key>
    <string>13.0</string>

    <key>NSHighResolutionCapable</key>
    <true/>

    <key>LSApplicationCategoryType</key>
    <string>public.app-category.video</string>

    <key>CFBundleIconFile</key>
    <string>AppIcon</string>
</dict>
</plist>
EOF
plutil -lint "${APP_BUNDLE}/Contents/Info.plist"

# copy runtime libs (install IDs must stay untouched: libmxl is already
# @rpath/libmxl.1.dylib from the build tree; SDL3/MoltenVK are dlopen'ed by
# leaf name, so their IDs are never referenced)
cp -L "${MXL_BUILD}/lib/libmxl.1.dylib" \
    "${APP_BUNDLE}/Contents/Frameworks/libmxl.1.dylib"
cp -L "$(brew --prefix sdl3)/lib/libSDL3.0.dylib" \
    "${APP_BUNDLE}/Contents/Frameworks/libSDL3.0.dylib"
cp -L "$(brew --prefix molten-vk)/lib/libMoltenVK.dylib" \
    "${APP_BUNDLE}/Contents/Frameworks/libMoltenVK.dylib"

# resolve @rpath/libmxl.1.dylib and the dlopen'ed SDL3/MoltenVK leaf names
# against the bundle's Frameworks dir
install_name_tool \
    -add_rpath "@loader_path/../Frameworks" \
    "${APP_BUNDLE}/Contents/MacOS/mxl-player"

# install_name_tool invalidated the executable's ad-hoc signature; re-sign
codesign --force --sign - "${APP_BUNDLE}"
codesign --verify "${APP_BUNDLE}"

env -u SDL3_LIBRARY \
    -u VULKAN_LIBRARY \
    -u DYLD_LIBRARY_PATH \
    "${APP_BUNDLE}/Contents/MacOS/mxl-player"

# compress, preserve MacOS bundle meta
ditto -c -k \
    --sequesterRsrc \
    --keepParent \
    "${APP_BUNDLE}" \
    ./release/mac/mxl-player-0.1.0-macos-arm64.zip