#!/bin/bash
# Linux native build script
# Builds Alpine image using native tools or Docker

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
BUILD_TYPE="${1:-iso}"

ARCHIPELAGO_VERSION="${ARCHIPELAGO_VERSION:-0.1.0}"
ALPINE_VERSION="${ALPINE_VERSION:-3.19}"
ARCH="${ARCH:-x86_64}"
OUTPUT_DIR="${OUTPUT_DIR:-$SCRIPT_DIR/results}"

echo "🐧 Building on Linux"
echo ""

# Check if we're in Alpine or need Docker
if [ -f /etc/alpine-release ]; then
    echo "✅ Running on Alpine Linux - using native tools"
    USE_DOCKER=false
elif command -v docker >/dev/null 2>&1 && docker info >/dev/null 2>&1; then
    echo "⚠️  Not on Alpine - using Docker"
    USE_DOCKER=true
else
    echo "❌ Need Alpine Linux or Docker"
    echo "   Install Alpine: https://alpinelinux.org/downloads/"
    echo "   Or install Docker: https://docs.docker.com/get-docker/"
    exit 1
fi

if [ "$USE_DOCKER" = true ]; then
    # Use Docker for build
    echo "🐳 Using Docker container for build..."
    echo "   This may take 30-60 minutes on first build..."
    echo ""
    
    docker run --rm -it \
        -v "$PROJECT_ROOT:/workspace" \
        -v "$OUTPUT_DIR:/results" \
        -v "$SCRIPT_DIR/build:/build" \
        -v "$SCRIPT_DIR/apks:/apks" \
        -e BUILD_TYPE="$BUILD_TYPE" \
        -e ARCHIPELAGO_VERSION="$ARCHIPELAGO_VERSION" \
        -e ALPINE_VERSION="$ALPINE_VERSION" \
        -e ARCH="$ARCH" \
        alpine:${ALPINE_VERSION} \
        sh -c "
            apk add --no-cache bash git alpine-sdk abuild alpine-conf syslinux xorriso squashfs-tools grub grub-efi mtools dosfstools e2fsprogs curl rust cargo nodejs npm
            cd /workspace/image-recipe
            ./build-alpine-native.sh $BUILD_TYPE
        "
else
    # Native Alpine build
    "$SCRIPT_DIR/build-alpine-native.sh" "$BUILD_TYPE"
fi