import os
import pytest


def test_yaml_defaults_load(monkeypatch):
    # Clear lru_cache so each test gets a fresh load
    from app.core import config as cfg_module
    cfg_module.get_config.cache_clear()

    # Remove env overrides that might bleed from shell environment
    for var in ["MAX_VIDEO_SIZE_MB", "LOG_LEVEL", "STORAGE_ENDPOINT"]:
        monkeypatch.delenv(var, raising=False)

    cfg = cfg_module.get_config()

    assert cfg["server"]["port"] == 8000
    assert cfg["video"]["max_file_size_mb"] == 200
    assert cfg["models"]["default_text"] == "glm-4-flash"
    assert cfg["models"]["default_vision"] == "glm-4v-flash"
    assert cfg["storage"]["buckets"]["source_data"] == "source-data"


def test_max_video_size_env_override(monkeypatch):
    from app.core import config as cfg_module
    cfg_module.get_config.cache_clear()

    monkeypatch.setenv("MAX_VIDEO_SIZE_MB", "500")
    cfg = cfg_module.get_config()

    assert cfg["video"]["max_file_size_mb"] == 500


def test_log_level_env_override(monkeypatch):
    from app.core import config as cfg_module
    cfg_module.get_config.cache_clear()

    monkeypatch.setenv("LOG_LEVEL", "DEBUG")
    cfg = cfg_module.get_config()

    assert cfg["server"]["log_level"] == "DEBUG"