#!/bin/sh
# shellcheck shell=sh

set -e

TS() { date "+%Y-%m-%d %H:%M:%S"; }
log() { echo "[$(TS)] [entrypoint] $*"; }

# -----------------------------------------------------------------------------
# 基础目录
# -----------------------------------------------------------------------------
mkdir -p /app/logs /app/data /app/temp
# Redis 数据目录放在 /app/data/redis，这样能随备份一起保存/恢复
REDIS_DIR="${REDIS_DIR:-/app/data/redis}"
mkdir -p "${REDIS_DIR}"

# -----------------------------------------------------------------------------
# 导出备份相关环境变量（给子进程可见）
# -----------------------------------------------------------------------------
export HF_TOKEN="${HF_TOKEN:-}"
export DATASET_ID="${DATASET_ID:-}"
export SYNC_INTERVAL MAX_BACKUPS BACKUP_PREFIX BACKUP_PATHS BACKUP_EXCLUDE

# 若未指定，给出对持久化友好的默认值（相对路径，配合 tar -C /）
BACKUP_PATHS="${BACKUP_PATHS:-app/data,app/data/redis}"
BACKUP_EXCLUDE="${BACKUP_EXCLUDE:-*.tmp,*.cache,**/.DS_Store}"
export BACKUP_PATHS BACKUP_EXCLUDE

# -----------------------------------------------------------------------------
# 在任何服务启动前先尝试恢复数据（包含 Redis 的 RDB/AOF）
# -----------------------------------------------------------------------------
if [ -n "$HF_TOKEN" ] && [ -n "$DATASET_ID" ]; then
  /app/tools/hf-backup.sh restore || log "Restore skipped/failed, continue."
else
  log "未配置 HF_TOKEN/DATASET_ID，跳过恢复。"
fi

# -----------------------------------------------------------------------------
# 启动（内置或外置）Redis
# -----------------------------------------------------------------------------
REDIS_HOST="${REDIS_HOST:-127.0.0.1}"
REDIS_PORT="${REDIS_PORT:-6379}"

start_internal_redis="false"
case "$REDIS_HOST" in
  ""|"127.0.0.1"|"localhost") start_internal_redis="true" ;;
esac

if [ "$start_internal_redis" = "true" ]; then
  log "Starting embedded Redis on 127.0.0.1:${REDIS_PORT} ..."
  if [ -n "${REDIS_PASSWORD:-}" ]; then
    redis-server \
      --port "${REDIS_PORT}" --bind 127.0.0.1 \
      --dir "${REDIS_DIR}" \
      --dbfilename dump.rdb \
      --appendonly yes --appendfilename appendonly.aof \
      --appendfsync everysec \
      --save 60 1 \
      --requirepass "${REDIS_PASSWORD}" &
  else
    redis-server \
      --port "${REDIS_PORT}" --bind 127.0.0.1 \
      --dir "${REDIS_DIR}" \
      --dbfilename dump.rdb \
      --appendonly yes --appendfilename appendonly.aof \
      --appendfsync everysec \
      --save 60 1 &
  fi
else
  log "Using EXTERNAL Redis at ${REDIS_HOST}:${REDIS_PORT}, skip embedded Redis."
fi

# 等待 Redis 就绪
log "Waiting for Redis on ${REDIS_HOST}:${REDIS_PORT} ..."
i=0
while :; do
  if [ -n "${REDIS_PASSWORD:-}" ]; then
    if redis-cli -h "${REDIS_HOST}" -p "${REDIS_PORT}" -a "${REDIS_PASSWORD}" ping >/dev/null 2>&1; then
      break
    fi
  else
    if redis-cli -h "${REDIS_HOST}" -p "${REDIS_PORT}" ping >/dev/null 2>&1; then
      break
    fi
  fi
  i=$((i+1))
  if [ "$i" -ge 60 ]; then
    log "Redis not ready after 60s, exit."
    exit 1
  fi
  sleep 1
done
log "Redis is ready."

# -----------------------------------------------------------------------------
# 备份守护进程（可选：开机先做一份一次性备份）
# BACKUP_ON_START=true 时，先执行一次上传，随后开启守护
# -----------------------------------------------------------------------------
if [ -n "$HF_TOKEN" ] && [ -n "$DATASET_ID" ]; then
  if [ "${BACKUP_ON_START:-false}" = "true" ]; then
    /app/tools/hf-backup.sh once || log "First backup failed (ignored)."
  fi
  # 同时输出到控制台和日志文件，便于在 HF 控制台直接看到
  /app/tools/hf-backup.sh daemon 2>&1 | tee -a /app/logs/hf-backup.log &
  log "启动 HF Dataset 备份服务（间隔 ${SYNC_INTERVAL:-3600}s，保留 ${MAX_BACKUPS:-10} 份）"
else
  log "未配置 HF_TOKEN/DATASET_ID，跳过备份守护进程。"
fi

# -----------------------------------------------------------------------------
# 可选：强制重置管理员（会删除 init.json）
# -----------------------------------------------------------------------------
if [ "${FORCE_ADMIN_RESET:-false}" = "true" ]; then
  log "FORCE_ADMIN_RESET=true, remove /app/data/init.json"
  rm -f /app/data/init.json
fi

# -----------------------------------------------------------------------------
# 初始化管理员 / 应用准备
# -----------------------------------------------------------------------------
if [ -n "${ADMIN_USERNAME:-}" ] && [ -n "${ADMIN_PASSWORD:-}" ]; then
  log "Bootstrapping admin user: ${ADMIN_USERNAME}"
else
  log "ADMIN_USERNAME/ADMIN_PASSWORD 未设置，将按已有 init.json 或默认逻辑处理。"
fi
npm run setup

# -----------------------------------------------------------------------------
# 启动应用
# -----------------------------------------------------------------------------
HOST="${HOST:-0.0.0.0}"
PORT="${PORT:-7860}"
log "Starting app on ${HOST}:${PORT} ..."
exec node src/app.js