refactor(config): drop legacy config migration (#31)

src/takopi/config.py

@@ -1,13 +1,10 @@
 from __future__ import annotations
 
-import shutil
 import tomllib
 from pathlib import Path
 
 LOCAL_CONFIG_NAME = Path(".takopi") / "takopi.toml"
 HOME_CONFIG_PATH = Path.home() / ".takopi" / "takopi.toml"
-LEGACY_LOCAL_CONFIG_NAME = Path(".codex") / "takopi.toml"
-LEGACY_HOME_CONFIG_PATH = Path.home() / ".codex" / "takopi.toml"
 
 
 class ConfigError(RuntimeError):
@@ -21,31 +18,6 @@ def _config_candidates() -> list[Path]:
     return candidates
 
 
-def _legacy_candidates() -> list[Path]:
-    candidates = [Path.cwd() / LEGACY_LOCAL_CONFIG_NAME, LEGACY_HOME_CONFIG_PATH]
-    if candidates[0] == candidates[1]:
-        return [candidates[0]]
-    return candidates
-
-
-def _maybe_migrate_legacy(legacy_path: Path, target_path: Path) -> None:
-    if target_path.exists():
-        if not target_path.is_file():
-            raise ConfigError(
-                f"Config path {target_path} exists but is not a file."
-            ) from None
-        return
-    if not legacy_path.is_file():
-        return
-    try:
-        target_path.parent.mkdir(parents=True, exist_ok=True)
-        shutil.move(legacy_path, target_path)
-    except OSError as e:
-        raise ConfigError(
-            f"Failed to migrate legacy config {legacy_path} to {target_path}: {e}"
-        ) from e
-
-
 def _read_config(cfg_path: Path) -> dict:
     try:
         raw = cfg_path.read_text(encoding="utf-8")
@@ -65,22 +37,12 @@ def load_telegram_config(path: str | Path | None = None) -> tuple[dict, Path]:
         return _read_config(cfg_path), cfg_path
 
     config_candidates = _config_candidates()
-    legacy_candidates = _legacy_candidates()
-    for legacy, target in zip(legacy_candidates, config_candidates, strict=True):
-        _maybe_migrate_legacy(legacy, target)
-
     for candidate in config_candidates:
+        if candidate.exists() and not candidate.is_file():
+            raise ConfigError(
+                f"Config path {candidate} exists but is not a file."
+            ) from None
         if candidate.is_file():
             return _read_config(candidate), candidate
-
-    for candidate in legacy_candidates:
-        if candidate.is_file():
-            return _read_config(candidate), candidate
-
-    checked: list[Path] = []
-    for candidate in [*config_candidates, *legacy_candidates]:
-        if candidate in checked:
-            continue
-        checked.append(candidate)
-    checked_display = ", ".join(str(candidate) for candidate in checked)
+    checked_display = ", ".join(str(candidate) for candidate in config_candidates)
     raise ConfigError(f"Missing takopi config. Checked: {checked_display}")

src/takopi/onboarding.py

@@ -26,7 +26,7 @@ class SetupResult:
 
 
 def config_issue(path: Path) -> SetupIssue:
-    config_display = _config_path_display(_preferred_config_path(path))
+    config_display = _config_path_display(path)
     return SetupIssue(
         "create a config",
         (
@@ -82,12 +82,6 @@ def _config_path_display(path: Path) -> str:
         return str(path)
 
 
-def _preferred_config_path(path: Path) -> Path:
-    if path.name == "takopi.toml" and path.parent.name == ".codex":
-        return path.parent.parent / ".takopi" / "takopi.toml"
-    return path
-
-
 def render_setup_guide(result: SetupResult) -> None:
     if result.ok:
         return

tests/test_onboarding.py

@@ -51,20 +51,3 @@ def test_check_setup_marks_invalid_chat_id(monkeypatch, tmp_path: Path) -> None:
 
     titles = {issue.title for issue in result.issues}
     assert "create a config" in titles
-
-
-def test_onboarding_prefers_new_config_path_for_legacy_file(monkeypatch) -> None:
-    backend = engines.get_backend("codex")
-    monkeypatch.setattr(onboarding.shutil, "which", lambda _name: "/usr/bin/codex")
-    legacy_path = Path.home() / ".codex" / "takopi.toml"
-    monkeypatch.setattr(
-        onboarding,
-        "load_telegram_config",
-        lambda: ({"bot_token": "token", "chat_id": "123"}, legacy_path),
-    )
-
-    result = onboarding.check_setup(backend)
-
-    issue = next(issue for issue in result.issues if issue.title == "create a config")
-    assert any("~/.takopi/takopi.toml" in line for line in issue.lines)
-    assert all(".codex/takopi.toml" not in line for line in issue.lines)