#!/bin/bash
# ===================================================================
# TK Factory Services - 원격 배포 스크립트 (맥북에서 실행)
# ===================================================================
# 사용법: ./scripts/deploy-remote.sh
# 설정:   ~/.tk-deploy-config
# ===================================================================

set -e

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
CONFIG_FILE="$HOME/.tk-deploy-config"

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
NC='\033[0m'

# === 설정 로드 ===
if [ ! -f "$CONFIG_FILE" ]; then
  echo -e "${RED}ERROR: 설정 파일이 없습니다: $CONFIG_FILE${NC}"
  cat <<'EXAMPLE'

다음 내용으로 생성하세요:

  NAS_HOST=100.71.132.52
  NAS_USER=hyungi
  NAS_DEPLOY_PATH=/volume1/docker_1/tk-factory-services
  NAS_SUDO_PASS=<sudo 비밀번호>
EXAMPLE
  exit 1
fi

source "$CONFIG_FILE"

for var in NAS_HOST NAS_USER NAS_DEPLOY_PATH NAS_SUDO_PASS; do
  if [ -z "${!var}" ]; then
    echo -e "${RED}ERROR: $CONFIG_FILE에 $var 가 설정되지 않았습니다${NC}"
    exit 1
  fi
done

DOCKER="/usr/local/bin/docker"
DEPLOY_BRANCH="${DEPLOY_BRANCH:-main}"

# === 헬퍼 함수 ===
ssh_cmd() {
  ssh -o ConnectTimeout=10 "${NAS_USER}@${NAS_HOST}" "$@"
}

nas_docker() {
  ssh_cmd "cd ${NAS_DEPLOY_PATH} && echo '${NAS_SUDO_PASS}' | sudo -S ${DOCKER} $*" 2>&1
}

# === Phase 1: Pre-flight 체크 ===
echo "=== TK Factory Services - 원격 배포 ==="
echo ""
echo -e "${CYAN}[1/5] Pre-flight 체크${NC}"

cd "$PROJECT_DIR"

# Working tree clean 확인
if [ -n "$(git status --porcelain)" ]; then
  echo -e "${RED}ERROR: 로컬에 커밋되지 않은 변경사항이 있습니다${NC}"
  echo ""
  git status --short
  echo ""
  echo "먼저 커밋하거나 stash하세요."
  exit 1
fi

# 로컬 커밋 정보
LOCAL_HASH=$(git rev-parse HEAD)
LOCAL_SHORT=$(git rev-parse --short HEAD)
LOCAL_MSG=$(git log -1 --format='%s')
LOCAL_BRANCH=$(git rev-parse --abbrev-ref HEAD)

# origin 동기화 확인
git fetch origin --quiet

ORIGIN_HASH=$(git rev-parse "origin/${LOCAL_BRANCH}" 2>/dev/null || echo "")
if [ "$LOCAL_HASH" != "$ORIGIN_HASH" ]; then
  echo -e "${RED}ERROR: 로컬 커밋이 origin에 push되지 않았습니다${NC}"
  echo "  로컬: ${LOCAL_SHORT} (${LOCAL_MSG})"
  echo "  원격: $(git rev-parse --short "origin/${LOCAL_BRANCH}" 2>/dev/null || echo 'N/A')"
  echo ""
  echo "먼저 push하세요: git push origin ${LOCAL_BRANCH}"
  exit 1
fi

echo -e "  로컬 HEAD: ${GREEN}${LOCAL_SHORT}${NC} - ${LOCAL_MSG}"
echo -e "  브랜치:    ${LOCAL_BRANCH}"

# === Phase 2: NAS 상태 비교 ===
echo ""
echo -e "${CYAN}[2/5] NAS 배포 상태 확인${NC}"

NAS_HASH=$(ssh_cmd "cd ${NAS_DEPLOY_PATH} && git log -1 --format='%H'" 2>/dev/null || echo "")

if [ -z "$NAS_HASH" ]; then
  echo -e "${RED}ERROR: NAS에서 git 정보를 가져올 수 없습니다${NC}"
  echo "  경로: ${NAS_DEPLOY_PATH}"
  echo "  NAS에 git clone이 완료되었는지 확인하세요."
  exit 1
fi

NAS_SHORT="${NAS_HASH:0:7}"
NAS_MSG=$(ssh_cmd "cd ${NAS_DEPLOY_PATH} && git log -1 --format='%s'" 2>/dev/null)

if [ "$LOCAL_HASH" = "$NAS_HASH" ]; then
  echo -e "  ${GREEN}이미 최신 버전입니다!${NC} (${NAS_SHORT} - ${NAS_MSG})"
  exit 0
fi

echo -e "  NAS 현재:  ${YELLOW}${NAS_SHORT}${NC} - ${NAS_MSG}"
echo -e "  배포 대상: ${GREEN}${LOCAL_SHORT}${NC} - ${LOCAL_MSG}"

# 배포될 커밋 목록
COMMIT_COUNT=$(git log "${NAS_HASH}..${LOCAL_HASH}" --oneline | wc -l | tr -d ' ')
echo ""
echo "=== 배포될 커밋 (${COMMIT_COUNT}개) ==="
git log "${NAS_HASH}..${LOCAL_HASH}" --oneline --no-decorate
echo ""

read -p "배포를 진행하시겠습니까? [y/N] " confirm
if [ "$confirm" != "y" ] && [ "$confirm" != "Y" ]; then
  echo "배포가 취소되었습니다."
  exit 0
fi

# === Phase 3: 배포 실행 ===
echo ""
echo -e "${CYAN}[3/5] NAS 코드 업데이트${NC}"

ssh_cmd "cd ${NAS_DEPLOY_PATH} && git fetch origin && git reset --hard origin/${DEPLOY_BRANCH}"

UPDATED_HASH=$(ssh_cmd "cd ${NAS_DEPLOY_PATH} && git log -1 --format='%H %s'" 2>/dev/null)
echo -e "  ${GREEN}완료${NC}: ${UPDATED_HASH}"

echo ""
echo -e "${CYAN}[4/5] Docker 컨테이너 빌드 및 재시작${NC}"
echo "  (빌드에 시간이 걸릴 수 있습니다...)"
echo ""

nas_docker "compose up -d --build"

echo ""
echo "  nginx 프록시 컨테이너 재시작 (IP 캐시 갱신)..."
nas_docker "restart tk-gateway tk-system2-web tk-system3-web"

# === Phase 4: 배포 후 검증 ===
echo ""
echo -e "${CYAN}[5/5] 배포 검증${NC} (15초 대기 후 health check)"
sleep 15

echo ""
echo "=== Container Status ==="
nas_docker "compose ps --format 'table {{.Name}}\t{{.Status}}'" || true

echo ""
echo "=== HTTP Health Check ==="
HEALTH_PASS=0
HEALTH_FAIL=0

check_remote() {
  local name="$1"
  local path="$2"
  local status
  status=$(ssh_cmd "curl -s -o /dev/null -w '%{http_code}' --connect-timeout 5 http://localhost:${path}" 2>/dev/null || echo "000")
  if [ "$status" -ge 200 ] 2>/dev/null && [ "$status" -lt 400 ] 2>/dev/null; then
    printf "  %-25s ${GREEN}OK${NC} (%s)\n" "$name" "$status"
    ((HEALTH_PASS++))
  else
    printf "  %-25s ${RED}FAIL${NC} (%s)\n" "$name" "$status"
    ((HEALTH_FAIL++))
  fi
}

check_remote "Gateway"          "30000/"
check_remote "SSO Auth"         "30050/health"
check_remote "System 1 API"     "30005/api/health"
check_remote "System 1 Web"     "30080/"
check_remote "System 1 FastAPI" "30008/health"
check_remote "System 2 API"     "30105/api/health"
check_remote "System 2 Web"     "30180/"
check_remote "System 3 API"     "30200/api/health"
check_remote "System 3 Web"     "30280/"
check_remote "tkuser API"       "30300/api/health"
check_remote "tkuser Web"       "30380/"
check_remote "phpMyAdmin"       "30880/"

echo ""
echo "  Health: PASS=${HEALTH_PASS} FAIL=${HEALTH_FAIL}"

# === Phase 5: 배포 로그 기록 ===
TIMESTAMP=$(date '+%Y-%m-%d %H:%M:%S')
ssh_cmd "echo '${TIMESTAMP} | ${LOCAL_SHORT} | ${LOCAL_MSG}' >> ${NAS_DEPLOY_PATH}/DEPLOY_LOG"

echo ""
if [ "$HEALTH_FAIL" -gt 0 ]; then
  echo -e "${YELLOW}배포 완료 (일부 서비스 health check 실패)${NC}"
  echo "  로그 확인: ssh ${NAS_USER}@${NAS_HOST} \"cd ${NAS_DEPLOY_PATH} && echo '...' | sudo -S ${DOCKER} compose logs --tail=50\""
else
  echo -e "${GREEN}배포 완료!${NC}"
fi
echo "  버전: ${LOCAL_SHORT} - ${LOCAL_MSG}"