feat: implement channel runtime connectors

app-instance/backend/beaver/interfaces/channels/connections/models.py

@@ -0,0 +1,117 @@
+"""Channel connection setup models."""
+
+from __future__ import annotations
+
+from dataclasses import asdict, dataclass, field
+from datetime import datetime, timezone
+from typing import Any
+
+
+CONNECTION_STATUSES = {"draft", "pairing", "connected", "running", "degraded", "error", "revoked"}
+
+
+def iso_now() -> str:
+    return datetime.now(timezone.utc).isoformat()
+
+
+@dataclass(slots=True)
+class ChannelConnection:
+    connection_id: str
+    owner_user_id: str | None
+    channel_id: str
+    kind: str
+    mode: str
+    display_name: str
+    account_id: str
+    status: str
+    auth_type: str
+    credentials_ref: str | None = None
+    connector_ref: str | None = None
+    pairing_session_id: str | None = None
+    runtime_config: dict[str, Any] = field(default_factory=dict)
+    capabilities: list[str] = field(default_factory=list)
+    created_at: str = field(default_factory=iso_now)
+    updated_at: str = field(default_factory=iso_now)
+    last_seen_at: str | None = None
+    last_error: str | None = None
+
+    def to_dict(self) -> dict[str, Any]:
+        return asdict(self)
+
+    @classmethod
+    def from_dict(cls, data: dict[str, Any]) -> "ChannelConnection":
+        return cls(
+            connection_id=str(data.get("connection_id") or ""),
+            owner_user_id=_optional_string(data.get("owner_user_id")),
+            channel_id=str(data.get("channel_id") or ""),
+            kind=str(data.get("kind") or ""),
+            mode=str(data.get("mode") or ""),
+            display_name=str(data.get("display_name") or ""),
+            account_id=str(data.get("account_id") or ""),
+            status=str(data.get("status") or "draft"),
+            auth_type=str(data.get("auth_type") or ""),
+            credentials_ref=_optional_string(data.get("credentials_ref")),
+            connector_ref=_optional_string(data.get("connector_ref")),
+            pairing_session_id=_optional_string(data.get("pairing_session_id")),
+            runtime_config=dict(data.get("runtime_config") or {}),
+            capabilities=[str(item) for item in data.get("capabilities") or []],
+            created_at=str(data.get("created_at") or iso_now()),
+            updated_at=str(data.get("updated_at") or iso_now()),
+            last_seen_at=_optional_string(data.get("last_seen_at")),
+            last_error=_optional_string(data.get("last_error")),
+        )
+
+
+@dataclass(slots=True)
+class PairingSession:
+    pairing_session_id: str
+    kind: str
+    scope: str
+    token: str
+    status: str
+    expires_at_ms: int
+    created_at_ms: int
+
+    def to_dict(self) -> dict[str, Any]:
+        return asdict(self)
+
+    @classmethod
+    def from_dict(cls, data: dict[str, Any]) -> "PairingSession":
+        return cls(
+            pairing_session_id=str(data.get("pairing_session_id") or ""),
+            kind=str(data.get("kind") or ""),
+            scope=str(data.get("scope") or ""),
+            token=str(data.get("token") or ""),
+            status=str(data.get("status") or "pending"),
+            expires_at_ms=int(data.get("expires_at_ms") or 0),
+            created_at_ms=int(data.get("created_at_ms") or 0),
+        )
+
+
+@dataclass(slots=True)
+class ChannelRuntimeSpec:
+    channel_id: str
+    kind: str
+    mode: str
+    account_id: str
+    display_name: str
+    config: dict[str, Any] = field(default_factory=dict)
+    secrets_ref: str | None = None
+    external_endpoint: str | None = None
+
+
+@dataclass(slots=True)
+class ValidationResult:
+    ok: bool
+    status: str
+    account_id: str | None = None
+    display_name: str | None = None
+    error: str | None = None
+    metadata: dict[str, Any] = field(default_factory=dict)
+
+
+def _optional_string(value: Any) -> str | None:
+    if value is None:
+        return None
+    text = str(value).strip()
+    return text or None