import sys
import unittest
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "src"
if str(SRC) not in sys.path:
    sys.path.insert(0, str(SRC))

from config import Config
from config_ui import (
    RUNTIME_MODE_EXPERT,
    RUNTIME_MODE_MANAGED,
    apply_canonical_runtime_defaults,
    infer_runtime_mode,
)


class ConfigUiRuntimeModeTests(unittest.TestCase):
    def test_infer_runtime_mode_defaults_to_managed(self):
        cfg = Config()
        self.assertEqual(infer_runtime_mode(cfg), RUNTIME_MODE_MANAGED)

    def test_infer_runtime_mode_detects_expert_overrides(self):
        cfg = Config()
        cfg.llm.provider = "external_api"
        cfg.external_api.enabled = True
        self.assertEqual(infer_runtime_mode(cfg), RUNTIME_MODE_EXPERT)

    def test_apply_canonical_runtime_defaults_resets_expert_fields(self):
        cfg = Config()
        cfg.stt.provider = "local_whisper"
        cfg.llm.provider = "external_api"
        cfg.external_api.enabled = True
        cfg.external_api.base_url = "https://example.local/v1"
        cfg.external_api.model = "custom-model"
        cfg.external_api.api_key_env_var = "CUSTOM_KEY"
        cfg.external_api.timeout_ms = 321
        cfg.external_api.max_retries = 8
        cfg.models.allow_custom_models = True
        cfg.models.whisper_model_path = "/tmp/custom-whisper.bin"
        cfg.models.llm_model_path = "/tmp/custom-model.gguf"

        apply_canonical_runtime_defaults(cfg)

        self.assertEqual(cfg.stt.provider, "local_whisper")
        self.assertEqual(cfg.llm.provider, "local_llama")
        self.assertFalse(cfg.external_api.enabled)
        self.assertEqual(cfg.external_api.base_url, "https://api.openai.com/v1")
        self.assertEqual(cfg.external_api.model, "gpt-4o-mini")
        self.assertEqual(cfg.external_api.api_key_env_var, "AMAN_EXTERNAL_API_KEY")
        self.assertEqual(cfg.external_api.timeout_ms, 15000)
        self.assertEqual(cfg.external_api.max_retries, 2)
        self.assertFalse(cfg.models.allow_custom_models)
        self.assertEqual(cfg.models.whisper_model_path, "")
        self.assertEqual(cfg.models.llm_model_path, "")


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