#!/usr/bin/env bash
# =============================================================================
# recipe-importer — Docker image build script
# =============================================================================
# Location: /home/kisfenyo/build/recipe-importer/build.sh
#
# Copies source from the git repo and builds the Docker image.
# Build artifacts stay here — the git repo stays clean.
#
# Usage:
#   ./build.sh                    # Build for current platform, tag as :dev
#   ./build.sh 0.1.0              # Build with version tag
#   ./build.sh 0.1.0 --push       # Build + push to Gitea registry
#   ./build.sh 0.1.0 --multiarch  # Build amd64+arm64 + push
# =============================================================================
set -euo pipefail

# --- Configuration ---
REPO_DIR="/home/kisfenyo/git/recipe-importer"
REGISTRY="gitea.dooplex.hu/admin"
IMAGE="${REGISTRY}/recipe-importer"

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
BUILD_DIR="${SCRIPT_DIR}/workspace"

# --- Parse arguments ---
VERSION="${1:-dev}"
ACTION="${2:-}"

# --- Colors ---
RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; CYAN='\033[0;36m'; NC='\033[0m'
info()  { echo -e "${GREEN}[INFO]${NC}  $*"; }
warn()  { echo -e "${YELLOW}[WARN]${NC}  $*"; }
error() { echo -e "${RED}[ERROR]${NC} $*"; }
step()  { echo -e "${CYAN}[STEP]${NC}  $*"; }

# --- Pre-flight checks ---
if [[ ! -d "${REPO_DIR}" ]]; then
    error "Source not found: ${REPO_DIR}"
    error "Clone the repo first: git clone https://gitea.dooplex.hu/admin/recipe-importer.git ${REPO_DIR}"
    exit 1
fi

if ! command -v docker &>/dev/null; then
    error "Docker not found."
    exit 1
fi

GIT_COMMIT="unknown"
if [[ -d "${REPO_DIR}/.git" ]]; then
    GIT_COMMIT=$(cd "${REPO_DIR}" && git rev-parse --short HEAD 2>/dev/null || echo "unknown")
fi

echo ""
info "╔══════════════════════════════════════╗"
info "║  recipe-importer image builder       ║"
info "╚══════════════════════════════════════╝"
info "Version:    ${VERSION}"
info "Commit:     ${GIT_COMMIT}"
info "Source:     ${REPO_DIR}"
info "Build dir:  ${BUILD_DIR}"
info "Image:      ${IMAGE}:${VERSION}"
echo ""

# =========================================================================
# Step 1: Pull latest & sync source
# =========================================================================
step "1/2 — Syncing source to workspace..."

cd "${REPO_DIR}"
git pull --ff-only 2>/dev/null || warn "git pull failed (offline or dirty tree?)"

rm -rf "${BUILD_DIR}"
mkdir -p "${BUILD_DIR}"

rsync -a --delete \
    --exclude '.git' \
    --exclude 'mindmegette-examples' \
    --exclude '__pycache__' \
    --exclude '*.pyc' \
    "${REPO_DIR}/" "${BUILD_DIR}/"

# Verify structure
for required in Dockerfile requirements.txt app/main.py app/scraper.py app/mealie.py; do
    if [[ ! -f "${BUILD_DIR}/${required}" ]]; then
        error "Missing: ${required}"
        exit 1
    fi
done

info "Source synced ✓"

# =========================================================================
# Step 2: Docker build
# =========================================================================
step "2/2 — Building Docker image..."

cd "${BUILD_DIR}"

BUILD_ARGS=(
    --build-arg "VERSION=${VERSION}"
)

case "${ACTION}" in
    --push)
        info "Building for current platform + pushing..."
        docker build "${BUILD_ARGS[@]}" \
            -t "${IMAGE}:${VERSION}" \
            -t "${IMAGE}:latest" \
            .

        info "Pushing..."
        docker push "${IMAGE}:${VERSION}"
        docker push "${IMAGE}:latest"
        ;;

    --multiarch)
        info "Building multi-arch (amd64 + arm64) + pushing..."

        if ! docker buildx inspect felhom-builder &>/dev/null; then
            info "Creating buildx builder (one-time setup)..."
            docker buildx create --name felhom-builder --use --bootstrap
        else
            docker buildx use felhom-builder
        fi

        docker buildx build "${BUILD_ARGS[@]}" \
            --platform linux/amd64,linux/arm64 \
            -t "${IMAGE}:${VERSION}" \
            -t "${IMAGE}:latest" \
            --push \
            .
        ;;

    *)
        info "Building for current platform (local only)..."
        docker build "${BUILD_ARGS[@]}" \
            -t "${IMAGE}:${VERSION}" \
            -t "${IMAGE}:latest" \
            .
        ;;
esac

# =========================================================================
# Summary
# =========================================================================
echo ""
info "╔══════════════════════════════════════╗"
info "║  Build complete ✓                    ║"
info "╚══════════════════════════════════════╝"
info "Image: ${IMAGE}:${VERSION}"

SIZE=$(docker image inspect "${IMAGE}:${VERSION}" --format='{{.Size}}' 2>/dev/null || echo "")
if [[ -n "${SIZE}" ]]; then
    SIZE_HUMAN=$(numfmt --to=iec "${SIZE}" 2>/dev/null || echo "${SIZE} bytes")
    info "Size:  ${SIZE_HUMAN}"
fi

echo ""
if [[ "${ACTION}" == "" ]]; then
    info "Image is local only. To push:"
    info "  ./build.sh ${VERSION} --push        # current arch"
    info "  ./build.sh ${VERSION} --multiarch   # amd64 + arm64"
fi