"""Tests for instance_config loading."""
import pytest


class TestInstanceConfig:
    def test_missing_config_returns_defaults(self, tmp_path, monkeypatch):
        monkeypatch.setenv("DATA_DIR", str(tmp_path))
        monkeypatch.setenv("TESTING", "1")
        monkeypatch.setenv("JWT_SECRET_KEY", "test-secret-key-minimum-32-characters!!")
        from app.instance_config import get_instance_name
        name = get_instance_name()
        assert isinstance(name, str)

    def test_reads_nested_instance_name(self, tmp_path, monkeypatch):
        """get_instance_name should read instance.name from YAML, not flat instance_name."""
        monkeypatch.setenv("DATA_DIR", str(tmp_path))
        monkeypatch.setenv("TESTING", "1")
        monkeypatch.setenv("JWT_SECRET_KEY", "test-secret-key-minimum-32-characters!!")

        state_dir = tmp_path / "state"
        state_dir.mkdir(exist_ok=True)
        (state_dir / "instance.yaml").write_text(
            "instance:\n  name: Acme Analytics\n  subtitle: Data Team\n"
        )

        import importlib
        import app.instance_config as mod
        # Reset cached config to force reload
        mod._instance_config = None
        importlib.reload(mod)

        assert mod.get_instance_name() == "Acme Analytics"
        assert mod.get_instance_subtitle() == "Data Team"

        # Cleanup: reset cache after test
        mod._instance_config = None


class TestInstanceBrand:
    """Brand and workspace_dir resolution: env > YAML > default,
    workspace_dir derives from brand when not explicitly set."""

    def _reload(self, tmp_path, monkeypatch):
        monkeypatch.setenv("DATA_DIR", str(tmp_path))
        monkeypatch.setenv("TESTING", "1")
        monkeypatch.setenv("JWT_SECRET_KEY", "test-secret-key-minimum-32-characters!!")
        import importlib
        import app.instance_config as mod
        mod._instance_config = None
        importlib.reload(mod)
        return mod

    def test_brand_defaults_to_agnes(self, tmp_path, monkeypatch):
        monkeypatch.delenv("AGNES_INSTANCE_BRAND", raising=False)
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_instance_brand() == "Agnes"
        mod._instance_config = None

    def test_brand_from_yaml(self, tmp_path, monkeypatch):
        monkeypatch.delenv("AGNES_INSTANCE_BRAND", raising=False)
        state_dir = tmp_path / "state"
        state_dir.mkdir(exist_ok=True)
        (state_dir / "instance.yaml").write_text(
            "instance:\n  name: Acme\n  brand: Foundry AI\n"
        )
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_instance_brand() == "Foundry AI"
        mod._instance_config = None

    def test_brand_env_overrides_yaml(self, tmp_path, monkeypatch):
        state_dir = tmp_path / "state"
        state_dir.mkdir(exist_ok=True)
        (state_dir / "instance.yaml").write_text(
            "instance:\n  name: Acme\n  brand: FromYaml\n"
        )
        monkeypatch.setenv("AGNES_INSTANCE_BRAND", "FromEnv")
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_instance_brand() == "FromEnv"
        mod._instance_config = None

    def test_brand_empty_falls_back_to_default(self, tmp_path, monkeypatch):
        # Empty env should not override the YAML/default to empty.
        monkeypatch.setenv("AGNES_INSTANCE_BRAND", "   ")
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_instance_brand() == "Agnes"
        mod._instance_config = None

    def test_workspace_dir_derives_from_brand(self, tmp_path, monkeypatch):
        monkeypatch.delenv("AGNES_WORKSPACE_DIR_NAME", raising=False)
        monkeypatch.setenv("AGNES_INSTANCE_BRAND", "Foundry AI")
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_workspace_dir_name() == "FoundryAI"
        mod._instance_config = None

    def test_workspace_dir_strips_all_non_alphanumeric(self, tmp_path, monkeypatch):
        monkeypatch.delenv("AGNES_WORKSPACE_DIR_NAME", raising=False)
        monkeypatch.setenv("AGNES_INSTANCE_BRAND", "ACME's Data!")
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_workspace_dir_name() == "ACMEsData"
        mod._instance_config = None

    def test_workspace_dir_default_when_brand_unset(self, tmp_path, monkeypatch):
        monkeypatch.delenv("AGNES_WORKSPACE_DIR_NAME", raising=False)
        monkeypatch.delenv("AGNES_INSTANCE_BRAND", raising=False)
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_workspace_dir_name() == "Agnes"
        mod._instance_config = None

    def test_workspace_dir_explicit_env_overrides_derivation(self, tmp_path, monkeypatch):
        monkeypatch.setenv("AGNES_INSTANCE_BRAND", "Foundry AI")
        monkeypatch.setenv("AGNES_WORKSPACE_DIR_NAME", "fdry")
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_workspace_dir_name() == "fdry"
        mod._instance_config = None

    def test_workspace_dir_explicit_yaml_overrides_derivation(self, tmp_path, monkeypatch):
        monkeypatch.delenv("AGNES_WORKSPACE_DIR_NAME", raising=False)
        monkeypatch.delenv("AGNES_INSTANCE_BRAND", raising=False)
        state_dir = tmp_path / "state"
        state_dir.mkdir(exist_ok=True)
        (state_dir / "instance.yaml").write_text(
            "instance:\n  name: Acme\n  brand: Foundry AI\n  workspace_dir: fdry\n"
        )
        mod = self._reload(tmp_path, monkeypatch)
        assert mod.get_workspace_dir_name() == "fdry"
        mod._instance_config = None

    def test_brand_flows_into_resolve_lines(self, tmp_path, monkeypatch):
        """Brand + workspace_dir substitute into the setup script lines."""
        mod = self._reload(tmp_path, monkeypatch)
        from app.web.setup_instructions import resolve_lines
        joined = "\n".join(resolve_lines(
            "agnes.whl",
            instance_brand="Foundry AI",
            workspace_dir="FoundryAI",
        ))
        assert "Set up the Foundry AI CLI on this machine." in joined
        assert "mkdir -p \"$HOME/FoundryAI\"" in joined
        assert "Bootstrap your Foundry AI workspace" in joined
        assert "Foundry AI workspace is ready" in joined
        # No raw placeholders survive substitution.
        assert "{instance_brand}" not in joined
        assert "{workspace_dir}" not in joined
        mod._instance_config = None

    def test_default_brand_keeps_agnes_branding(self, tmp_path, monkeypatch):
        """Backwards-compat: callers that don't pass brand/workspace_dir
        get the literal 'Agnes' / '~/Agnes' rendering."""
        mod = self._reload(tmp_path, monkeypatch)
        from app.web.setup_instructions import resolve_lines
        joined = "\n".join(resolve_lines("agnes.whl"))
        assert "Set up the Agnes CLI on this machine." in joined
        assert "mkdir -p \"$HOME/Agnes\"" in joined
        assert "Bootstrap your Agnes workspace" in joined
        assert "Agnes workspace is ready" in joined
        mod._instance_config = None