#!/bin/sh

# 检查环境变量
if [ -z "$HF_TOKEN" ] || [ -z "$DATASET_ID" ]; then
    echo "缺少必要的环境变量 HF_TOKEN 或 DATASET_ID"
    exit 1
fi

# 上传/下载文件
cat > /tmp/hf_sync.py << 'EOL'
from huggingface_hub import HfApi
import sys
import os

def upload_backup(file_path, token, repo_id):
    api = HfApi(token=token)
    try:
        api.upload_file(
            path_or_fileobj=file_path,
            path_in_repo="webui.db",
            repo_id=repo_id,
            repo_type="dataset"
        )
        print("成功上传 webui.db")
    except Exception as e:
        print(f"文件上传出错: {str(e)}")

# 下载 webui.db 文件
def download_latest_backup(token, repo_id):
    try:
        api = HfApi(token=token)
        filepath = api.hf_hub_download(
            repo_id=repo_id,
            filename="webui.db",
            repo_type="dataset"
        )
        if filepath and os.path.exists(filepath):
            os.makedirs('./data', exist_ok=True)
            os.system(f'cp "{filepath}" ./data/webui.db')
            print("成功从 HuggingFace 恢复 webui.db")
    except Exception as e:
        print(f"下载时出错: {str(e)}")

if __name__ == "__main__":
    action = sys.argv[1]
    token = sys.argv[2]
    repo_id = sys.argv[3]
    
    if action == "upload":
        file_path = sys.argv[4]
        upload_backup(file_path, token, repo_id)
    elif action == "download":
        download_latest_backup(token, repo_id)
EOL

# 首次启动时下载 webui.db
echo "正在从 HuggingFace 下载 webui.db..."
python3 /tmp/hf_sync.py download "${HF_TOKEN}" "${DATASET_ID}"

# 同步函数
sync_data() {
    while true; do
        echo "开始同步进程 $(date)"
        if [ -f "./data/webui.db" ]; then
            # 直接复制 webui.db 到临时目录
            cp ./data/webui.db /tmp/webui.db
            echo "正在上传 webui.db 到 HuggingFace..."
            python3 /tmp/hf_sync.py upload "${HF_TOKEN}" "${DATASET_ID}" "/tmp/webui.db"
            rm -f /tmp/webui.db
        else
            echo "数据库文件不存在，等待下次同步..."
        fi
        SYNC_INTERVAL=${SYNC_INTERVAL:-7200}
        echo "下次同步将在 ${SYNC_INTERVAL} 秒后进行..."
        sleep $SYNC_INTERVAL
    done
}

# 后台启动同步进程
sync_data &