"""Workspace API — query history and feedback, stored in Redis."""

from __future__ import annotations

import json
from typing import Literal

import redis.asyncio as aioredis
from fastapi import APIRouter, HTTPException, Query
from pydantic import BaseModel

from src.config import settings
from src.utils.logger import get_logger

logger = get_logger(__name__)

router = APIRouter(tags=["workspace"])

HISTORY_KEY  = "gs:queries"       # shared with analytics
FEEDBACK_KEY = "gs:feedback:{id}" # one key per query_id


async def _redis() -> aioredis.Redis:
    return aioredis.from_url(settings.redis_url, decode_responses=True)


# ---------------------------------------------------------------------------
# GET /api/workspace/history
# ---------------------------------------------------------------------------

@router.get("/api/workspace/history")
async def get_history(
    page:  int = Query(default=1, ge=1),
    limit: int = Query(default=20, ge=1, le=100),
) -> dict:
    r = await _redis()
    try:
        total    = await r.llen(HISTORY_KEY)
        start    = (page - 1) * limit
        raw_list = await r.lrange(HISTORY_KEY, start, start + limit - 1)
    except Exception as exc:
        logger.warning("workspace_history_redis_failed", extra={"error": str(exc)})
        return {"items": [], "total": 0}
    finally:
        await r.aclose()

    items = []
    for raw in raw_list:
        try:
            ev = json.loads(raw)
            items.append({
                "id":           ev.get("id", ""),
                "query":        ev.get("query", ""),
                "answer_brief": ev.get("answer_brief", ""),
                "created_at":   ev.get("created_at", ""),
                "success":      ev.get("success", True),
                "duration_ms":  ev.get("duration_ms", 0),
            })
        except Exception:
            continue

    return {"items": items, "total": total}


# ---------------------------------------------------------------------------
# POST /api/query/{query_id}/feedback
# ---------------------------------------------------------------------------

Sentiment = Literal["helpful", "not_helpful", "hallucinated"]


class FeedbackBody(BaseModel):
    sentiment: Sentiment
    text:      str | None = None


@router.post("/api/query/{query_id}/feedback")
async def post_feedback(query_id: str, body: FeedbackBody) -> dict:
    r = await _redis()
    try:
        key     = FEEDBACK_KEY.format(id=query_id)
        payload = {"sentiment": body.sentiment, "text": body.text or ""}
        await r.set(key, json.dumps(payload), ex=86400 * 30)
    except Exception as exc:
        logger.warning("workspace_feedback_redis_failed", extra={"query_id": query_id, "error": str(exc)})
    finally:
        await r.aclose()

    logger.info("feedback_received", extra={"query_id": query_id, "sentiment": body.sentiment})
    return {"ok": True}