#!/bin/sh
set -eu

APP_URL="${1:?APP_URL is required}"
REMOTE_DIR="${2:-/opt/caiwuxitong}"
ENV_FILE="$REMOTE_DIR/runtime/.env"
TEMP_FILE="$ENV_FILE.tmp"

if [ "$(id -u)" -ne 0 ]; then
    echo "update-runtime-url.sh must run as root" >&2
    exit 1
fi

if [ ! -f "$ENV_FILE" ]; then
    echo "Missing $ENV_FILE; run bootstrap-server.sh first" >&2
    exit 1
fi

umask 077
awk -v app_url="$APP_URL" '
    BEGIN { updated = 0 }
    /^APP_URL=/ {
        print "APP_URL=" app_url
        updated = 1
        next
    }
    { print }
    END {
        if (!updated) {
            print "APP_URL=" app_url
        }
    }
' "$ENV_FILE" > "$TEMP_FILE"

chown --reference="$ENV_FILE" "$TEMP_FILE"
chmod --reference="$ENV_FILE" "$TEMP_FILE"
mv "$TEMP_FILE" "$ENV_FILE"