#!/usr/bin/env bash

set -euo pipefail

# 当前阶段只负责启动本地 standalone SpacetimeDB，先把服务器进程和数据目录口径固定下来，不提前耦合 publish 流程。

usage() {
  cat <<'EOF'
用法:
  ./server-rs/scripts/spacetime-dev.sh
  GENARRATIVE_SPACETIME_PORT=3101 ./server-rs/scripts/spacetime-dev.sh

说明:
  1. 启动 Genarrative Rust 后端使用的本地 standalone SpacetimeDB
  2. 默认把本地数据目录放到 `server-rs/.spacetimedb/local`
  3. 当前阶段只负责启动 standalone server，暂不自动 publish `crates/spacetime-module`
EOF
}

if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
  usage
  exit 0
fi

SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
SERVER_RS_DIR="$(cd -- "${SCRIPT_DIR}/.." && pwd)"
LISTEN_HOST="${GENARRATIVE_SPACETIME_HOST:-127.0.0.1}"
PORT="${GENARRATIVE_SPACETIME_PORT:-3001}"
ROOT_DIR="${GENARRATIVE_SPACETIME_ROOT_DIR:-${SERVER_RS_DIR}/.spacetimedb/local}"

if [[ ! -f "${SERVER_RS_DIR}/crates/spacetime-module/README.md" ]]; then
  echo "[server-rs:spacetime-dev] 未找到 crates/spacetime-module/README.md，无法启动本地 SpacetimeDB 脚本。" >&2
  exit 1
fi

if ! command -v spacetime >/dev/null 2>&1; then
  echo "[server-rs:spacetime-dev] 缺少 spacetime CLI。" >&2
  echo "[server-rs:spacetime-dev] 安装文档: https://spacetimedb.com/install" >&2
  echo "[server-rs:spacetime-dev] Linux/macOS 安装命令: curl -sSf https://install.spacetimedb.com | sh" >&2
  exit 1
fi

mkdir -p "${ROOT_DIR}"

echo "[server-rs:spacetime-dev] 工作目录: ${SERVER_RS_DIR}"
echo "[server-rs:spacetime-dev] 数据目录: ${ROOT_DIR}"
echo "[server-rs:spacetime-dev] 监听地址: ${LISTEN_HOST}:${PORT}"
echo "[server-rs:spacetime-dev] 模式: standalone"
echo "[server-rs:spacetime-dev] 说明: 当前阶段暂不自动 publish crates/spacetime-module"

cd "${SERVER_RS_DIR}"
spacetime --root-dir "${ROOT_DIR}" start --edition standalone --listen-addr "${LISTEN_HOST}:${PORT}"