"""
Benchmark tests for HiCache Storage with 3FS backend.
Usage:
    python3 -m pytest test/srt/hicache/test_hicache_storage_3fs_backend.py -v
"""

import json
import os
import time
import unittest
from types import SimpleNamespace

from test_hicache_storage_file_backend import HiCacheStorageBaseMixin

from sglang.test.few_shot_gsm8k import run_eval as run_eval_few_shot_gsm8k
from sglang.test.test_utils import CustomTestCase


class HiCacheStorage3FSBackendBaseMixin(HiCacheStorageBaseMixin):
    """Base mixin class with common setup and utilities"""

    @classmethod
    def _get_additional_server_args_and_env(cls):
        """Get additional server arguments specific to configuration - override in subclasses"""
        # Create a temporary JSON config file for HF3FS
        hf3fs_config = {
            "file_path_prefix": os.path.join(cls.temp_dir, "hicache"),
            "file_size": 1024 * 1024 * 1024 * 2,
            "numjobs": 2,
            "entries": 8,
            "use_mock_hf3fs_client": True,
        }

        # Write config to temporary file
        config_file = os.path.join(cls.temp_dir, "hf3fs_config.json")
        with open(config_file, "w") as f:
            json.dump(hf3fs_config, f, indent=2)

        server_args = {
            "--tp-size": 1,
            "--hicache-ratio": 1.2,
            "--hicache-storage-backend": "hf3fs",
            "--hicache-storage-backend-extra-config": json.dumps(hf3fs_config),
        }

        # Set the environment variable to point to our config file
        env_vars = {
            "SGLANG_HICACHE_HF3FS_CONFIG_PATH": config_file,
        }

        return server_args, env_vars


class TestHf3fsBackendLayerFirstLayout(
    HiCacheStorage3FSBackendBaseMixin, CustomTestCase
):
    """Layer first layout tests for HiCache-Hf3fs backend"""

    @classmethod
    def _get_additional_server_args_and_env(cls):
        """Get additional server arguments specific to configuration - override in subclasses"""
        server_args, env_vars = super()._get_additional_server_args_and_env()
        server_args["--hicache-mem-layout"] = "layer_first"
        server_args["--hicache-io-backend"] = "direct"
        server_args["--tp-size"] = 2
        return server_args, env_vars


class TestHf3fsBackendAccuracy(HiCacheStorage3FSBackendBaseMixin, CustomTestCase):
    """Accuracy tests for HiCache-Hf3fs backend"""

    @classmethod
    def _get_additional_server_args_and_env(cls):
        """Get additional server arguments specific to configuration - override in subclasses"""
        server_args, env_vars = super()._get_additional_server_args_and_env()
        server_args["--hicache-ratio"] = 1.5
        server_args["--tp-size"] = 2
        return server_args, env_vars

    def test_eval_accuracy(self):
        """Test eval accuracy with cache persistence across cache flushes"""
        from test_hicache_storage_file_backend import run_eval_accuracy_test

        run_eval_accuracy_test(self)


if __name__ == "__main__":
    unittest.main(verbosity=2)
