#!/bin/bash
# Auto-Restart Script für geänderte Docker-Compose Stacks
# Nur laufende, aktive Container werden neu gestartet
# Inaktive Container bleiben unberührt
# Logs im Repo-Verzeichnis
#test

REPO_DIR="/srv/docker"
LOGFILE="$REPO_DIR/scripts/docker-update.log"

# Liste der inaktiven Container
INACTIVE_CONTAINERS=("adguard" "kea" "caddy" "wikijs")

log() {
    echo "$(date '+%Y-%m-%d %H:%M:%S') | $*" | tee -a "$LOGFILE"
}

log "===== Starting Auto-Restart (final) ====="

cd "$REPO_DIR" || { log "ERROR: Cannot enter $REPO_DIR"; exit 1; }

# 1️⃣ Git Pull + Hard Reset (VM exakt auf Remote-Stand bringen)
git fetch --all &>/dev/null
git reset --hard origin/main &>/dev/null
log "Pulled latest changes and reset VM to remote state."

# 2️⃣ Geänderte Compose-Dateien ermitteln
CHANGED=$(git diff --name-only HEAD~1 HEAD | grep -E '^compose/.+/docker-compose\.yml$' || true)

if [ -z "$CHANGED" ]; then
    log "No Compose files changed. Nothing to restart."
    exit 0
fi

# 3️⃣ Nur laufende, geänderte Container neu starten
for FILE in $CHANGED; do
    CONTAINER_NAME=$(echo "$FILE" | cut -d'/' -f2)

    # Inaktive Container überspringen
    if [[ " ${INACTIVE_CONTAINERS[@]} " =~ " ${CONTAINER_NAME} " ]]; then
        log "Skipping inactive container: $CONTAINER_NAME"
        continue
    fi

    COMPOSE_DIR="$REPO_DIR/compose/$CONTAINER_NAME"
    if [ ! -d "$COMPOSE_DIR" ]; then
        log "Warning: $COMPOSE_DIR does not exist, skipping..."
        continue
    fi

    # Prüfen, ob Container läuft
    RUNNING=$(docker compose -f "$COMPOSE_DIR/docker-compose.yml" ps -q)
    if [ -z "$RUNNING" ]; then
        log "Container $CONTAINER_NAME is stopped. Skipping restart."
        continue
    fi

    log "Restarting running container: $CONTAINER_NAME"
    cd "$COMPOSE_DIR" || continue

    docker compose up -d &>/dev/null
    if [ $? -eq 0 ]; then
        log "✅ $CONTAINER_NAME restarted successfully"
    else
        log "❌ Failed to restart $CONTAINER_NAME"
    fi
done

log "===== Auto-Restart Completed ====="