feat: add Odoo JSON-RPC client with projects, tasks, and calendar methods

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/modules/odoo_client.py

@@ -0,0 +1,91 @@
+from typing import Any
+
+import httpx
+
+
+class OdooClient:
+    def __init__(self, url: str, database: str, username: str, password: str):
+        self.url = url.rstrip("/")
+        self.database = database
+        self.username = username
+        self.password = password
+        self.uid: int | None = None
+
+    async def _jsonrpc(self, endpoint: str, params: dict[str, Any]) -> Any:
+        payload = {
+            "jsonrpc": "2.0",
+            "method": "call",
+            "params": params,
+            "id": 1,
+        }
+        async with httpx.AsyncClient() as client:
+            response = await client.post(
+                f"{self.url}{endpoint}",
+                json=payload,
+                timeout=30.0,
+            )
+            response.raise_for_status()
+            result = response.json()
+            if "error" in result:
+                raise Exception(f"Odoo error: {result['error']}")
+            return result.get("result")
+
+    async def authenticate(self) -> int:
+        self.uid = await self._jsonrpc("/web/session/authenticate", {
+            "db": self.database,
+            "login": self.username,
+            "password": self.password,
+        })
+        return self.uid
+
+    async def search_read(
+        self,
+        model: str,
+        domain: list | None = None,
+        fields: list[str] | None = None,
+        limit: int = 0,
+        order: str = "",
+    ) -> list[dict[str, Any]]:
+        return await self._jsonrpc("/web/dataset/call_kw", {
+            "model": model,
+            "method": "search_read",
+            "args": [domain or []],
+            "kwargs": {
+                "fields": fields or [],
+                "limit": limit,
+                "order": order,
+            },
+        })
+
+    async def get_projects(self) -> list[dict[str, Any]]:
+        return await self.search_read(
+            model="project.project",
+            domain=[("active", "=", True)],
+            fields=["name", "task_count", "color"],
+        )
+
+    async def get_tasks(self, project_id: int | None = None) -> list[dict[str, Any]]:
+        domain: list = [("active", "=", True)]
+        if project_id:
+            domain.append(("project_id", "=", project_id))
+        return await self.search_read(
+            model="project.task",
+            domain=domain,
+            fields=[
+                "name", "project_id", "stage_id", "user_ids",
+                "priority", "date_deadline", "kanban_state",
+            ],
+        )
+
+    async def get_calendar_events(
+        self, date_from: str, date_to: str
+    ) -> list[dict[str, Any]]:
+        return await self.search_read(
+            model="calendar.event",
+            domain=[
+                ("start", ">=", f"{date_from} 00:00:00"),
+                ("start", "<=", f"{date_to} 23:59:59"),
+            ],
+            fields=["name", "start", "stop", "location", "description", "partner_ids"],
+            order="start asc",
+        )