#!/usr/bin/env bash
# docker-build.sh — Baut photo-converter in Docker
#
# Verwendung:
#   ./scripts/docker-build.sh [linux|windows|all] [--no-cache] [--run]
#
# Optionen:
#   linux      Linux CLI-Build (Standard)
#   windows    Windows Cross-Compilation via MXE
#   all        Beide Targets bauen
#   --no-cache Docker-Cache ignorieren
#   --run      Nach dem Build direkt ausführen (nur linux)

set -euo pipefail

RED='\033[0;31m'; GREEN='\033[0;32m'; BLUE='\033[0;34m'; NC='\033[0m'
log_info() { echo -e "${BLUE}[docker]${NC} $*"; }
log_ok()   { echo -e "${GREEN}[ok]${NC}    $*"; }
log_error(){ echo -e "${RED}[error]${NC} $*"; exit 1; }

TARGET="linux"
NO_CACHE=""
RUN_AFTER=0

for arg in "$@"; do
    case "$arg" in
        linux)     TARGET="linux" ;;
        windows)   TARGET="windows" ;;
        all)       TARGET="all" ;;
        --no-cache) NO_CACHE="--no-cache" ;;
        --run)     RUN_AFTER=1 ;;
        --help|-h) sed -n '2,9p' "$0" | sed 's/^# \?//'; exit 0 ;;
        *) log_error "Unbekannte Option: $arg" ;;
    esac
done

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
cd "$PROJECT_ROOT"

command -v docker &>/dev/null || log_error "Docker nicht gefunden. Installieren: https://docs.docker.com/get-docker/"

mkdir -p output dist-windows

build_linux() {
    log_info "Baue Linux-Image (photo-converter:linux) ..."
    docker build $NO_CACHE \
        --target linux-builder \
        -t photo-converter:linux \
        -f docker/Dockerfile \
        .
    log_ok "Linux-Image gebaut"

    if [[ $RUN_AFTER -eq 1 ]]; then
        log_info "Starte Konvertierung ..."
        docker run --rm \
            -v "$PROJECT_ROOT/import:/project/import:ro" \
            -v "$PROJECT_ROOT/output:/project/output" \
            -v "$PROJECT_ROOT/config.ini:/project/config.ini:ro" \
            photo-converter:linux \
            --batch --config config.ini
        log_ok "Konvertierung abgeschlossen. Ergebnisse in: output/"
    fi
}

build_windows() {
    log_info "Baue Windows-Cross-Compilation-Image (photo-converter:windows-builder) ..."
    log_info "Hinweis: Erster Build lädt ~3 GB MXE-Pakete herunter (~20-30 Min)"
    docker build $NO_CACHE \
        --target windows-builder \
        -t photo-converter:windows-builder \
        -f docker/Dockerfile \
        .
    log_ok "Windows-Builder-Image gebaut"

    log_info "Extrahiere photo-converter.exe ..."
    mkdir -p dist-windows
    docker run --rm \
        -v "$PROJECT_ROOT/dist-windows:/project/dist-windows" \
        photo-converter:windows-builder \
        -c "cp -r /project/dist-windows/. /project/dist-windows/ && echo 'Fertig'"

    log_ok "Windows-Build abgeschlossen: dist-windows/"
    ls -lh dist-windows/bin/ 2>/dev/null || true
}

case "$TARGET" in
    linux)   build_linux ;;
    windows) build_windows ;;
    all)     build_linux; build_windows ;;
esac

log_ok "Fertig."