#!/bin/bash
set -euo pipefail

ROOT_DIR="/app"
LOG_DIR="${ROOT_DIR}/logs"
MONGO_DATA_DIR="/data/db"

mkdir -p "${LOG_DIR}" "${MONGO_DATA_DIR}"

cleanup() {
  if [[ -n "${SERVICE_PIDS[*]-}" ]]; then
    for pid in "${SERVICE_PIDS[@]}"; do
      if kill -0 "${pid}" 2>/dev/null; then
        kill "${pid}" 2>/dev/null || true
      fi
    done
  fi
  mongod --shutdown --dbpath "${MONGO_DATA_DIR}" >/dev/null 2>&1 || true
}

trap cleanup EXIT

log() {
  echo "[$(date '+%Y-%m-%dT%H:%M:%S%z')] $*"
}

wait_for_port() {
  local host="$1"
  local port="$2"
  local retries="${3:-60}"
  local delay="${4:-2}"
  for ((i=0; i<retries; i++)); do
    if nc -z "${host}" "${port}" 2>/dev/null; then
      return 0
    fi
    sleep "${delay}"
  done
  log "❌ Timed out waiting for ${host}:${port}"
  return 1
}

wait_for_http() {
  local url="$1"
  local retries="${2:-60}"
  local delay="${3:-2}"
  for ((i=0; i<retries; i++)); do
    if curl -fsS "${url}" >/dev/null 2>&1; then
      return 0
    fi
    sleep "${delay}"
  done
  log "❌ Timed out waiting for ${url}"
  return 1
}

start_service() {
  local service_dir="$1"
  local jar_name="$2"
  shift 2
  (
    cd "${ROOT_DIR}/${service_dir}"
    env "$@" java -jar "build/libs/${jar_name}" \
      >>"${LOG_DIR}/${service_dir}.log" 2>&1 &
    echo $!
  )
}

log "Starting MongoDB daemon"
mongod --dbpath "${MONGO_DATA_DIR}" --bind_ip_all --logpath "${LOG_DIR}/mongodb.log" --fork
wait_for_port "127.0.0.1" 27017 120 1

SERVICE_PIDS=()

log "Starting Eureka server"
PID=$(start_service "EurekaServerConfiguration" "eureka-server.jar" \
  SERVER_PORT=8085 \
  SPRING_PROFILES_ACTIVE=docker \
  ZIPKIN_BASE_URL=)
SERVICE_PIDS+=(${PID})
wait_for_http "http://127.0.0.1:8085/actuator/health"

log "Starting User service"
PID=$(start_service "TaskUserService" "task-user-service.jar" \
  SERVER_PORT=8081 \
  SPRING_PROFILES_ACTIVE=docker \
  SPRING_APP_NAME=USER-SERVICE \
  EUREKA_SERVER_URI=http://127.0.0.1:8085/eureka \
  MONGODB_URI=mongodb://127.0.0.1:27017/users \
  ZIPKIN_BASE_URL= \
  TASK_ALLOWED_ORIGINS=* \
  TASK_ALLOW_CREDENTIALS=false)
SERVICE_PIDS+=(${PID})
wait_for_http "http://127.0.0.1:8081/actuator/health"

log "Starting Task service"
PID=$(start_service "TaskService" "task-service.jar" \
  SERVER_PORT=8082 \
  SPRING_PROFILES_ACTIVE=docker \
  SPRING_APP_NAME=TASK-SERVICE \
  EUREKA_SERVER_URI=http://127.0.0.1:8085/eureka \
  MONGODB_URI=mongodb://127.0.0.1:27017/tasks \
  ZIPKIN_BASE_URL=)
SERVICE_PIDS+=(${PID})
wait_for_http "http://127.0.0.1:8082/actuator/health"

log "Starting Task Submission service"
PID=$(start_service "TaskSubmissionService" "task-submission-service.jar" \
  SERVER_PORT=8083 \
  SPRING_PROFILES_ACTIVE=docker \
  SPRING_APP_NAME=TASK-SUBMISSION-SERVICE \
  EUREKA_SERVER_URI=http://127.0.0.1:8085/eureka \
  MONGODB_URI=mongodb://127.0.0.1:27017/submissions \
  ZIPKIN_BASE_URL=)
SERVICE_PIDS+=(${PID})
wait_for_http "http://127.0.0.1:8083/actuator/health"

log "Starting API Gateway"
PID=$(start_service "APIGateWay" "api-gateway.jar" \
  SERVER_PORT=8090 \
  SPRING_PROFILES_ACTIVE=docker \
  EUREKA_SERVER_URI=http://127.0.0.1:8085/eureka \
  ZIPKIN_BASE_URL= \
  GATEWAY_ALLOWED_ORIGIN_1=* \
  GATEWAY_ALLOWED_ORIGIN_PATTERN=*)
SERVICE_PIDS+=(${PID})
wait_for_http "http://127.0.0.1:8090/actuator/health"

log "All backend services are up. Launching UI server"
cd "${ROOT_DIR}/task-management-ui"
export INTERNAL_API_URL="http://127.0.0.1:8090"
exec node server.js