phase 9

detect/providers/__init__.py

@@ -0,0 +1,58 @@
+"""
+Cloud LLM provider registry.
+
+Select provider via CLOUD_LLM_PROVIDER env var.
+Each provider reads its own env vars for auth/config.
+
+    CLOUD_LLM_PROVIDER=groq   → GROQ_API_KEY, GROQ_MODEL, GROQ_BASE_URL
+    CLOUD_LLM_PROVIDER=gemini → GEMINI_API_KEY, GEMINI_MODEL
+    CLOUD_LLM_PROVIDER=openai → OPENAI_API_KEY, OPENAI_MODEL, OPENAI_BASE_URL
+    CLOUD_LLM_PROVIDER=claude → ANTHROPIC_API_KEY, CLAUDE_MODEL
+"""
+
+from __future__ import annotations
+
+import os
+
+from .base import CloudProvider, ProviderResponse
+from .groq import GroqProvider
+from .gemini import GeminiProvider
+from .openai_compat import OpenAICompatProvider
+from .claude import ClaudeProvider
+
+PROVIDERS: dict[str, type] = {
+    "groq": GroqProvider,
+    "gemini": GeminiProvider,
+    "openai": OpenAICompatProvider,
+    "claude": ClaudeProvider,
+}
+
+_cached: CloudProvider | None = None
+
+
+def get_provider() -> CloudProvider:
+    """Get the configured cloud provider (cached after first call)."""
+    global _cached
+    if _cached is not None:
+        return _cached
+
+    name = os.environ.get("CLOUD_LLM_PROVIDER", "groq")
+    cls = PROVIDERS.get(name)
+    if cls is None:
+        raise ValueError(f"Unknown provider: {name!r}. Options: {list(PROVIDERS)}")
+
+    _cached = cls()
+    return _cached
+
+
+def has_api_key() -> bool:
+    """Check if the configured provider has an API key set."""
+    name = os.environ.get("CLOUD_LLM_PROVIDER", "groq")
+    key_map = {
+        "groq": "GROQ_API_KEY",
+        "gemini": "GEMINI_API_KEY",
+        "openai": "OPENAI_API_KEY",
+        "claude": "ANTHROPIC_API_KEY",
+    }
+    env_var = key_map.get(name, "")
+    return bool(os.environ.get(env_var, ""))