feat: add Docker Compose profiles and Login Flow v2 service

Add selective service startup via Docker Compose profiles so each MCP deployment mode runs independently. Also add the new mcp-login-flow service (port 8004) for Login Flow v2 authentication (ADR-022). Profile assignments: - single-user: mcp (port 8000) - multi-user-basic: mcp-multi-user-basic (port 8003) - oauth: mcp-oauth (port 8001) - keycloak: keycloak + mcp-keycloak (port 8002) - login-flow: mcp-login-flow (port 8004) Infrastructure services (db, redis, app, recipes) always start. Integration tests cover the full Login Flow v2 provisioning flow: OAuth → browser login → app password → Nextcloud API access for notes, calendar, contacts, files, deck, and cookbook operations. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-27 20:33:54 +01:00
parent 5796e2ba54
commit 8b5c2395b5
21 changed files with 3156 additions and 5 deletions
@@ -0,0 +1,71 @@
+"""MCP elicitation helpers for Login Flow v2.
+
+Provides a unified way to present login URLs to users, using MCP elicitation
+when the client supports it, or falling back to returning the URL in a message.
+"""
+
+import logging
+
+from mcp.server.fastmcp import Context
+from pydantic import BaseModel, Field
+
+logger = logging.getLogger(__name__)
+
+
+class LoginFlowConfirmation(BaseModel):
+    """Schema for Login Flow v2 confirmation elicitation."""
+
+    acknowledged: bool = Field(
+        default=False,
+        description="Check this box after completing login at the provided URL",
+    )
+
+
+async def present_login_url(
+    ctx: Context,
+    login_url: str,
+    message: str | None = None,
+) -> str:
+    """Present a login URL to the user via MCP elicitation or message.
+
+    Tries MCP elicitation first (ctx.elicit) for interactive clients.
+    Falls back to returning the URL as a plain message.
+
+    Args:
+        ctx: MCP context
+        login_url: URL the user should open in their browser
+        message: Optional custom message (defaults to standard Login Flow prompt)
+
+    Returns:
+        "accepted" if user acknowledged via elicitation,
+        "declined" if user declined,
+        "message_only" if elicitation not supported (URL returned in message)
+    """
+    if message is None:
+        message = (
+            f"Please log in to Nextcloud to grant access:\n\n"
+            f"{login_url}\n\n"
+            f"Open this URL in your browser, log in, and grant the requested permissions. "
+            f"Then check the box below and click OK."
+        )
+
+    try:
+        result = await ctx.elicit(
+            message=message,
+            schema=LoginFlowConfirmation,
+        )
+
+        if result.action == "accept":
+            logger.info("User acknowledged login flow completion")
+            return "accepted"
+        elif result.action == "decline":
+            logger.info("User declined login flow")
+            return "declined"
+        else:
+            logger.info("User cancelled login flow")
+            return "cancelled"
+
+    except Exception as e:
+        # Elicitation not supported by this client - fall back to message
+        logger.debug(f"Elicitation not available ({e}), returning URL in message")
+        return "message_only"