#!/bin/bash

# Refactored Droidspaces RootFS Build Engine (Single Template Mode)

# This script is designed to be called by a parent loop or CI matrix.

# Configuration

: "${VERSION:=dev}"

DATE=$(date +%Y%m%d)

ARCH=$(uname -m)

# Parse arguments

while getopts "i:v:" opt; do

case $opt in

i) DOCKERFILE="$OPTARG" ;;

v) VERSION="$OPTARG" ;;

*) echo "Usage: $0 -i <template.Dockerfile> [-v <version>]" ; exit 1 ;;

esac

done

if [ -z "$DOCKERFILE" ]; then

echo "Error: Template file (-i) is required."

exit 1

fi

if [ ! -f "$DOCKERFILE" ]; then

echo "Error: Template file '$DOCKERFILE' not found."

exit 1

fi

# Extract prefix (e.g., Ubuntu-24.04 from Ubuntu-24.04.Dockerfile)

PREFIX=$(echo "$DOCKERFILE" | sed 's/\.Dockerfile//')

echo "========================================================="

echo " Starting Build: $PREFIX"

echo " Using Template: $DOCKERFILE"

echo " Build Version : $VERSION"

echo "========================================================="

# 1. Environment Initialization (Native)

echo "Ensuring native build environment..."

# In native mode, no QEMU or binfmt initialization is required.

# 2. Builder Setup

if ! docker buildx inspect droidspaces-builder >/dev/null 2>&1; then

echo "Creating new buildx builder: droidspaces-builder"

docker buildx create --name droidspaces-builder --driver docker-container --use

else

echo "Using existing buildx builder: droidspaces-builder"

docker buildx use droidspaces-builder

fi

# Bootstrap to ensure it's ready

docker buildx inspect --bootstrap || echo "Warning: Bootstrap failed, attempting to continue..."

set -e

# 3. Core Build Process

TEMP_TAR="custom-${PREFIX}-rootfs.tar"

FINAL_NAME="${PREFIX}-Droidspaces-rootfs-${ARCH}-${DATE}-${VERSION}.tar.xz"

echo "Running Docker Build (Native)..."

docker buildx build \

--target export \

--output type=tar,dest="$TEMP_TAR" \

-f "$DOCKERFILE" \

.

# 4. Packaging

echo "Compressing build output (xz ultra - Multi-threaded)..."

xz -T0 -9 -f "$TEMP_TAR"

echo "Finalizing: $FINAL_NAME"

mv "${TEMP_TAR}.xz" "$FINAL_NAME"

echo "========================================================="

echo " Successfully completed: $FINAL_NAME"

echo "========================================================="