import pytest


def _cfg(tmp_path, **overrides):
    base = {
        "dwh": {
            "type": "thoth_rest",
            "database": {"database": "warehouse", "schema": "dw"},
            "endpoint": {"base_url": "http://dwh.example.invalid", "api_key": "secret"},
        },
        "vectors": {"type": "qdrant", "base_url": "http://qdrant:6333", "collection": "psd", "collection_lifecycle": "self_heal"},
        "embeddings": {"provider": "ollama_internal", "base_url": "http://embedding:11434", "model": "qwen3-embedding:0.6b", "dimensions": 1024},
        "roots": {"artifacts": str(tmp_path / "artifacts"), "indexes": str(tmp_path / "indexes")},
        "paths": {"artifacts": str(tmp_path / "artifacts"), "indexes": str(tmp_path / "indexes"), "sessions": str(tmp_path / "sessions")},
    }
    base.update(overrides)
    return base


def _write_cfg(tmp_path, raw):
    import yaml as _yaml

    from tht.config import load_config
    path = tmp_path / "config.yaml"
    path.write_text(_yaml.safe_dump(raw), encoding="utf-8")
    cfg = load_config(path)
    cfg._workspace_id = "psd"
    cfg._config_source = "workspace://psd"
    return cfg


@pytest.fixture()
def binding(tmp_path):
    from tht.jobs.dwh_pipeline import config_dwh_binding
    return config_dwh_binding(_write_cfg(tmp_path, _cfg(tmp_path)))


def test_binding_has_versioned_fingerprints(binding):
    assert binding["workspace_id"] == "psd"
    assert binding["config_fingerprint"].startswith("sha256:")
    assert binding["input_fingerprint"].startswith("sha256:")
    assert len(binding["config_fingerprint"]) == 71


def test_content_only_change_keeps_binding(tmp_path):
    from tht.jobs.dwh_pipeline import config_dwh_binding
    cfg1 = _write_cfg(tmp_path, _cfg(tmp_path))
    import copy
    raw = copy.deepcopy(_cfg(tmp_path))
    raw["vectors"]["collection_lifecycle"] = "require_existing"
    cfg3 = _write_cfg(tmp_path, raw)
    assert config_dwh_binding(cfg1)["config_fingerprint"] == config_dwh_binding(cfg3)["config_fingerprint"]


def test_endpoint_change_changes_binding(tmp_path):
    from tht.jobs.dwh_pipeline import config_dwh_binding
    cfg1 = _write_cfg(tmp_path, _cfg(tmp_path))
    raw = _cfg(tmp_path)
    raw["dwh"] = {"type": "thoth_rest", "database": {"database": "warehouse", "schema": "dw"}, "endpoint": {"base_url": "http://other.example.invalid", "api_key": "secret"}}
    cfg2 = _write_cfg(tmp_path, raw)
    assert config_dwh_binding(cfg1)["config_fingerprint"] != config_dwh_binding(cfg2)["config_fingerprint"]