"""
app/routers/tools.py — Tool-Definitionen für Ollama/n8n/MCP (read-only)

Zweck:
    Liefert Funktions-Schemas (OpenAI-/Ollama-kompatibles Tool-JSON) für:
      - mindnet_query    -> POST /query
      - mindnet_subgraph -> GET  /graph/{note_id}
Kompatibilität:
    Python 3.12+, FastAPI 0.110+
Version:
    0.1.1  (query ODER query_vector möglich)
Stand:
    2025-10-07
Nutzung:
    app.include_router(tools.router, prefix="/tools", tags=["tools"])
Änderungsverlauf:
    0.1.1 (2025-10-07) – mindnet_query: oneOf(query, query_vector).
    0.1.0 (2025-10-07) – Erstanlage.
"""

from __future__ import annotations
from fastapi import APIRouter

router = APIRouter()

TOOLS = {
  "tools": [
    {
      "type": "function",
      "function": {
        "name": "mindnet_query",
        "description": "Hybrid-Retrieval über mindnet (Semantik + Edges).",
        "parameters": {
          "type": "object",
          "oneOf": [
            {"required": ["query"]},
            {"required": ["query_vector"]}
          ],
          "properties": {
            "query": {
              "type": "string",
              "description": "Freitext-Query; wird serverseitig in 384-d Embedding konvertiert."
            },
            "query_vector": {
              "type": "array",
              "items": {"type": "number"},
              "description": "Direkter 384-d Query-Vektor (optional)."
            },
            "top_k": {"type":"integer","default":10,"minimum":1,"maximum":50},
            "expand_depth": {"type":"integer","default":1,"minimum":0,"maximum":3},
            "edge_types": {
              "type":"array","items":{"type":"string"},
              "default": ["references","belongs_to","prev","next"]
            },
            "filters": {"type":"object","description":"payload-Filter (tags etc.)"}
          }
        }
      }
    },
    {
      "type": "function",
      "function": {
        "name": "mindnet_subgraph",
        "description": "Gibt die Nachbarschaft (Edges) einer Note/Seed-ID zurück.",
        "parameters": {
          "type":"object",
          "properties": {
            "note_id":{"type":"string"},
            "depth":{"type":"integer","default":1,"minimum":0,"maximum":3},
            "edge_types":{
              "type":"array","items":{"type":"string"},
              "default":["references","belongs_to","prev","next","backlink"]
            }
          },
          "required":["note_id"]
        }
      }
    }
  ]
}

@router.get("/ollama")
def get_ollama_tools():
    return TOOLS