#!/usr/bin/env bash
#
# build-all.sh — Cross-compile NextReceipt for multiple platforms
#
# Prerequisites:
#   linux/amd64:  gcc (native)
#   linux/arm64:  gcc-aarch64-linux-gnu  (sudo apt install gcc-aarch64-linux-gnu)
#   darwin/amd64: o64-clang (via osxcross)
#   darwin/arm64: aarch64-apple-darwin-clang (via osxcross)
#
# Usage:  ./build-all.sh
# Output: ./dist/app-{platform}

set -euo pipefail

OUTDIR="dist"
mkdir -p "$OUTDIR"

VERSION="${1:-v1.0.0}"
LDFLAGS="-s -w"

echo "==> Building NextReceipt $VERSION"

build() {
    local GOOS="$1" GOARCH="$2" CC="$3" SUFFIX="$4"
    local OUT="$OUTDIR/app-$SUFFIX"
    echo "    $SUFFIX ..."
    GOOS="$GOOS" GOARCH="$GOARCH" CGO_ENABLED=1 CC="$CC" \
        go build -ldflags="$LDFLAGS" -o "$OUT" .
    echo "    => $(ls -lh "$OUT" | awk '{print $5}')"
}

# linux/amd64 — native
build linux amd64 "gcc" "linux-amd64"

# linux/arm64 — cross
if command -v aarch64-linux-gnu-gcc &>/dev/null; then
    build linux arm64 "aarch64-linux-gnu-gcc" "linux-arm64"
fi

# macOS builds — only if osxcross toolchain is available
if command -v o64-clang &>/dev/null; then
    build darwin amd64 "o64-clang" "darwin-amd64"
fi
if command -v aarch64-apple-darwin-clang &>/dev/null; then
    build darwin arm64 "aarch64-apple-darwin-clang" "darwin-arm64"
fi

echo "==> All builds complete. Output in $OUTDIR/"
ls -lh "$OUTDIR/"