import unittest
from unittest.mock import patch

from zsgdp.config import load_config
from zsgdp.gpu import GPUModelConfig, collect_gpu_runtime_status


class GPURuntimeTests(unittest.TestCase):
    def test_model_config_reads_gpu_section(self):
        config = load_config(overrides={"gpu": {"backend": "vllm", "provider": "huggingface_spaces", "space_name": "zeroshotGPU", "max_batch_size": 8}})

        model_config = GPUModelConfig.from_config(config)

        self.assertEqual(model_config.backend, "vllm")
        self.assertEqual(model_config.provider, "huggingface_spaces")
        self.assertEqual(model_config.space_name, "zeroshotGPU")
        self.assertEqual(model_config.max_batch_size, 8)

    def test_collect_runtime_detects_space_environment(self):
        config = load_config()

        with patch.dict("os.environ", {"SPACE_ID": "user/zeroshotGPU", "SPACE_HARDWARE": "l4x1"}, clear=False):
            status = collect_gpu_runtime_status(config).to_dict()

        self.assertEqual(status["provider"], "huggingface_spaces")
        self.assertEqual(status["space_name"], "zeroshotGPU")
        self.assertEqual(status["gpu_models_target"], "zeroshotGPU")
        self.assertTrue(status["running_on_huggingface_space"])
        self.assertEqual(status["space_id"], "user/zeroshotGPU")
        self.assertEqual(status["hardware"], "l4x1")
        self.assertIn(status["device"], {"cpu", "cuda", "mps"})
        self.assertIn("torch_available", status)
        self.assertEqual(status["configured_models"]["vlm"]["model_id"], "Qwen/Qwen2.5-VL-3B-Instruct")
        self.assertEqual(status["configured_models"]["embedding"]["model_id"], "jinaai/jina-embeddings-v3")

    def test_collect_runtime_reports_local_note(self):
        config = load_config()

        with patch.dict("os.environ", {"SPACE_ID": "", "SPACE_HOST": "", "SPACE_HARDWARE": ""}, clear=False):
            status = collect_gpu_runtime_status(config)

        self.assertFalse(status.running_on_huggingface_space)
        self.assertTrue(any("local run" in note for note in status.notes))


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