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

fail() {
  echo "[remote-preflight][ERROR] $1" >&2
  exit 1
}

for key in REMOTE_DIR REMOTE_ENV_FILE COMPOSE_FILE POSTGRES_DATA_DIR STORAGE_HOST_DIR DEPLOY_DATA_MODE SYNC_ENV; do
  [[ -n "${!key:-}" ]] || fail "缺少 $key"
done

if [[ "$DEPLOY_DATA_MODE" == "existing" ]]; then
  [[ -d "$REMOTE_DIR" \
    && -f "$REMOTE_DIR/server/package.json" \
    && -f "$REMOTE_DIR/$COMPOSE_FILE" ]] \
    || fail "existing 模式要求 REMOTE_DIR 是现存仓库根目录"
  [[ -f "$POSTGRES_DATA_DIR/PG_VERSION" && -d "$STORAGE_HOST_DIR" ]] \
    || fail "existing 模式的数据目录合同未满足"
fi

if [[ "$SYNC_ENV" == "0" ]]; then
  [[ -f "$REMOTE_ENV_FILE" && ! -L "$REMOTE_ENV_FILE" ]] \
    || fail "SYNC_ENV=0 要求同步前已有普通远端 .env 文件"
fi

echo "[remote-preflight][PASS] 远端仓库、环境与数据合同通过"