#!/usr/bin/env bash
set -euo pipefail

REPO_DIR="/opt/NextWks"
TARGET_DIR="/opt/nextworkspace"
SERVICE_NAME="nextworkspace"
BINARY_NAME="nextworkspace"
HEALTH_CHECK_RETRIES=10
HEALTH_CHECK_INTERVAL=2

# --- Mode detection ---
GREENFIELD=false
if [ "${1:-}" = "--destroy" ]; then
    GREENFIELD=true
    echo "[MODE] Greenfield deploy (--destroy)"
elif [ ! -d "$TARGET_DIR" ]; then
    GREENFIELD=true
    echo "[MODE] Greenfield deploy (target missing)"
else
    echo "[MODE] Smart update (target exists)"
fi

# --- Common: pull + build ---
cd "$REPO_DIR"
echo "[1/8] Pulling latest code..."
git pull

echo "[2/8] Building binary..."
export PATH=$PATH:/usr/local/go/bin
go build -o "$BINARY_NAME" .

# --- Greenfield path ---
if [ "$GREENFIELD" = true ]; then
    echo "[3/8] Removing old deployment..."
    rm -rf "$TARGET_DIR"

    echo "[4/8] Creating target directories..."
    mkdir -p "$TARGET_DIR/config/nextworkspace"
    mkdir -p "$TARGET_DIR/config/zoraxy/conf/proxy"
    mkdir -p "$TARGET_DIR/data/zoraxy"
    mkdir -p "$TARGET_DIR/compose"
    mkdir -p "$TARGET_DIR/logs/zoraxy"

    echo "[5/8] Copying binary..."
    cp "$BINARY_NAME" "$TARGET_DIR/$BINARY_NAME"

    echo "[6/8] Copying config files..."
    cp -r config/nextworkspace/* "$TARGET_DIR/config/nextworkspace/"
    cp -r config/zoraxy/* "$TARGET_DIR/config/zoraxy/"
    cp compose/zoraxy.yaml "$TARGET_DIR/compose/zoraxy.yaml"

    echo "[7/8] Deploying Zoraxy..."
    podman-compose -f "$TARGET_DIR/compose/zoraxy.yaml" up -d 2>&1 || echo "[WARN] Zoraxy deploy had issues (see above)"

    echo "[8/8] Writing systemd service and starting launcher..."
    mkdir -p "$TARGET_DIR"
    cat > /etc/systemd/system/$SERVICE_NAME.service <<UNIT
[Unit]
Description=NextWorkspace Launcher
After=network.target

[Service]
Environment=CONFIG_DIR=$TARGET_DIR/config/nextworkspace
ExecStart=$TARGET_DIR/$BINARY_NAME
WorkingDirectory=$TARGET_DIR
Restart=always
User=root
Group=root

[Install]
WantedBy=multi-user.target
UNIT

    systemctl daemon-reload
    systemctl enable --now $SERVICE_NAME

# --- Smart update path ---
else
    echo "[3/8] Stopping launcher..."
    systemctl stop $SERVICE_NAME 2>/dev/null || true

    echo "[4/8] Swapping binary..."
    cp "$BINARY_NAME" "$TARGET_DIR/$BINARY_NAME"

    echo "[5/8] Refreshing configs..."
    if [ -f config/nextworkspace/apps.yaml ]; then
        cp config/nextworkspace/apps.yaml "$TARGET_DIR/config/nextworkspace/apps.yaml"
    fi
    if [ -d config/zoraxy/conf/proxy ]; then
        cp config/zoraxy/conf/proxy/* "$TARGET_DIR/config/zoraxy/conf/proxy/" 2>/dev/null || true
    fi

    echo "[6/8] Restarting Zoraxy..."
    podman-compose -f "$TARGET_DIR/compose/zoraxy.yaml" restart 2>&1 || true

    echo "[7/8] Starting launcher..."
    systemctl restart $SERVICE_NAME
fi

# --- Health check ---
echo "[*] Running health check..."
for i in $(seq 1 $HEALTH_CHECK_RETRIES); do
    if curl -sf http://127.0.0.1:9000/health > /dev/null 2>&1; then
        echo "[OK] NextWorkspace launcher is healthy on http://127.0.0.1:9000/"
        exit 0
    fi
    echo "  Attempt $i/$HEALTH_CHECK_RETRIES — not ready yet..."
    sleep $HEALTH_CHECK_INTERVAL
done

echo "[FAIL] Health check failed — launcher did not respond on port 9000"
exit 1