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

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
DEPLOY_SERVER="${DEPLOY_SERVER:-}"
DEPLOY_CONTRACT_UNIT="${DEPLOY_CONTRACT_UNIT:-hyb-oa-automatic-backup-daily.service}"

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

[[ "$DEPLOY_SERVER" =~ ^([A-Za-z0-9._-]+@)?[A-Za-z0-9._-]+$ ]] \
  || fail "必须显式提供安全的 DEPLOY_SERVER"
[[ "$DEPLOY_CONTRACT_UNIT" =~ ^[A-Za-z0-9_.@-]+\.service$ ]] \
  || fail "DEPLOY_CONTRACT_UNIT 格式无效"
command -v ssh >/dev/null 2>&1 || fail "缺少 ssh"

unit_environment="$(ssh "$DEPLOY_SERVER" \
  "systemctl show '${DEPLOY_CONTRACT_UNIT}' -p Environment --value")"
[[ -n "$unit_environment" ]] || fail "无法读取既有部署合同 unit"

declare -A contract=()
for entry in $unit_environment; do
  key="${entry%%=*}"
  value="${entry#*=}"
  case "$key" in
    REMOTE_DIR|REMOTE_ENV_FILE|COMPOSE_FILE|COMPOSE_PROJECT_NAME|POSTGRES_DATA_DIR|STORAGE_HOST_DIR)
      contract["$key"]="$value"
      ;;
  esac
done

for key in REMOTE_DIR REMOTE_ENV_FILE COMPOSE_FILE COMPOSE_PROJECT_NAME POSTGRES_DATA_DIR STORAGE_HOST_DIR; do
  [[ -n "${contract[$key]:-}" ]] || fail "既有部署合同缺少 $key"
done

echo "[deploy-existing] 已读取受控 unit 合同；路径与标识不回显"
DEPLOY_SERVER="$DEPLOY_SERVER" \
REMOTE_DIR="${contract[REMOTE_DIR]}" \
REMOTE_ENV_FILE="${contract[REMOTE_ENV_FILE]}" \
COMPOSE_FILE="${contract[COMPOSE_FILE]}" \
COMPOSE_PROJECT_NAME="${contract[COMPOSE_PROJECT_NAME]}" \
POSTGRES_DATA_DIR="${contract[POSTGRES_DATA_DIR]}" \
STORAGE_HOST_DIR="${contract[STORAGE_HOST_DIR]}" \
DEPLOY_DATA_MODE=existing \
SYNC_ENV=0 \
bash "$ROOT_DIR/deploy/trialrun/deploy.sh"