#!/bin/bash
# Native Alpine build script
# Must be run on Alpine Linux or in Alpine container

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 Alpine image natively"
echo ""

# Install build dependencies
echo "📦 Installing build dependencies..."
apk add --no-cache \
    bash \
    git \
    alpine-sdk \
    abuild \
    alpine-conf \
    syslinux \
    xorriso \
    squashfs-tools \
    grub \
    grub-efi \
    mtools \
    dosfstools \
    e2fsprogs \
    rsync \
    || true

# Setup abuild keys if needed
if [ ! -f ~/.abuild/abuild.conf ]; then
    echo "🔑 Setting up abuild keys..."
    abuild-keygen -a -n || true
fi

# Clone Alpine aports if needed
APORTS_DIR="$SCRIPT_DIR/aports"
if [ ! -d "$APORTS_DIR" ]; then
    echo "📥 Cloning Alpine aports repository..."
    git clone --depth=1 --branch "v${ALPINE_VERSION}" \
        https://gitlab.alpinelinux.org/alpine/aports.git "$APORTS_DIR" || {
        echo "⚠️  Failed to clone aports, trying without branch..."
        git clone --depth=1 https://gitlab.alpinelinux.org/alpine/aports.git "$APORTS_DIR"
    }
fi

# Copy custom profile
echo "📝 Setting up custom Archipelago profile..."
PROFILE_DIR="$APORTS_DIR/scripts/mkimg.archipelago"
mkdir -p "$PROFILE_DIR"
cp -r "$SCRIPT_DIR/alpine-profile/"* "$PROFILE_DIR/" 2>/dev/null || true

# Build ISO or disk image
cd "$APORTS_DIR/scripts"

if [ "$BUILD_TYPE" = "iso" ]; then
    echo "💿 Building ISO image..."
    ./mkimage.sh \
        --arch "$ARCH" \
        --profile archipelago \
        --repository "http://dl-cdn.alpinelinux.org/alpine/v${ALPINE_VERSION}/main" \
        --repository "http://dl-cdn.alpinelinux.org/alpine/v${ALPINE_VERSION}/community" \
        --outdir "$OUTPUT_DIR" \
        --tag "$ALPINE_VERSION" || {
        echo "❌ ISO build failed"
        exit 1
    }
    
    # Rename output
    if [ -f "$OUTPUT_DIR/alpine-archipelago-${ALPINE_VERSION}-${ARCH}.iso" ]; then
        mv "$OUTPUT_DIR/alpine-archipelago-${ALPINE_VERSION}-${ARCH}.iso" \
           "$OUTPUT_DIR/archipelago-${ARCHIPELAGO_VERSION}-${ARCH}.iso"
    fi
elif [ "$BUILD_TYPE" = "disk" ]; then
    echo "💾 Building disk image..."
    # Build ISO first, then convert to disk image
    ./mkimage.sh \
        --arch "$ARCH" \
        --profile archipelago \
        --repository "http://dl-cdn.alpinelinux.org/alpine/v${ALPINE_VERSION}/main" \
        --repository "http://dl-cdn.alpinelinux.org/alpine/v${ALPINE_VERSION}/community" \
        --outdir "$OUTPUT_DIR" \
        --tag "$ALPINE_VERSION" || {
        echo "❌ Image build failed"
        exit 1
    }
    
    # Convert to disk image (will be done in install script)
    echo "📦 Disk image will be created in install step"
else
    echo "❌ Unknown build type: $BUILD_TYPE"
    exit 1
fi

# Install Archipelago into the image
echo "🔧 Installing Archipelago components..."
"$SCRIPT_DIR/scripts/install-archipelago.sh" "$OUTPUT_DIR" || {
    echo "⚠️  Archipelago installation had issues, but image was built"
}

echo ""
echo "✅ Build complete!"