initial a2a-pack

a2a_pack/cli/credentials.py

@@ -0,0 +1,68 @@
+"""Credentials store at ``~/.a2a/credentials.json``."""
+from __future__ import annotations
+
+import json
+import os
+from dataclasses import dataclass
+from pathlib import Path
+
+DEFAULT_API_URL = "http://api.127-0-0-1.nip.io"
+
+
+def _config_dir() -> Path:
+    return Path.home() / ".a2a"
+
+
+def _creds_path() -> Path:
+    return _config_dir() / "credentials.json"
+
+
+@dataclass
+class Credentials:
+    api_url: str
+    token: str
+    email: str
+
+
+def save(api_url: str, token: str, email: str) -> Path:
+    d = _config_dir()
+    d.mkdir(parents=True, exist_ok=True)
+    path = _creds_path()
+    path.write_text(json.dumps({"api_url": api_url, "token": token, "email": email}))
+    os.chmod(path, 0o600)
+    return path
+
+
+def load() -> Credentials | None:
+    path = _creds_path()
+    if not path.exists():
+        return None
+    try:
+        data = json.loads(path.read_text())
+    except (OSError, json.JSONDecodeError):
+        return None
+    return Credentials(
+        api_url=data.get("api_url", DEFAULT_API_URL),
+        token=data["token"],
+        email=data.get("email", ""),
+    )
+
+
+def clear() -> bool:
+    path = _creds_path()
+    if path.exists():
+        path.unlink()
+        return True
+    return False
+
+
+def resolve_api_url(override: str | None = None) -> str:
+    if override:
+        return override
+    env = os.environ.get("A2A_API_URL")
+    if env:
+        return env
+    creds = load()
+    if creds is not None:
+        return creds.api_url
+    return DEFAULT_API_URL