from typing import Any, Dict, Optional

from fastapi import APIRouter, Depends
from pydantic import BaseModel
from sqlmodel import Session

from core.database import get_session
from services.topic_service import (
    create_topic,
    delete_topic,
    delete_topic_item,
    get_topic_item_stats,
    list_topic_items,
    list_topics,
    mark_topic_item_read,
    update_topic,
)

router = APIRouter()


class TopicCreateRequest(BaseModel):
    topic_key: str
    name: Optional[str] = None
    description: Optional[str] = None
    is_active: bool = True
    routing: Optional[Dict[str, Any]] = None
    view_schema: Optional[Dict[str, Any]] = None


class TopicUpdateRequest(BaseModel):
    name: Optional[str] = None
    description: Optional[str] = None
    is_active: Optional[bool] = None
    routing: Optional[Dict[str, Any]] = None
    view_schema: Optional[Dict[str, Any]] = None


@router.get("/api/bots/{bot_id}/topics")
def list_bot_topics(bot_id: str, session: Session = Depends(get_session)):
    return list_topics(session, bot_id)


@router.post("/api/bots/{bot_id}/topics")
def create_bot_topic(bot_id: str, payload: TopicCreateRequest, session: Session = Depends(get_session)):
    return create_topic(
        session,
        bot_id=bot_id,
        topic_key=payload.topic_key,
        name=payload.name,
        description=payload.description,
        is_active=payload.is_active,
        routing=payload.routing,
        view_schema=payload.view_schema,
    )


@router.put("/api/bots/{bot_id}/topics/{topic_key}")
def update_bot_topic(bot_id: str, topic_key: str, payload: TopicUpdateRequest, session: Session = Depends(get_session)):
    return update_topic(session, bot_id=bot_id, topic_key=topic_key, updates=payload.model_dump(exclude_unset=True))


@router.delete("/api/bots/{bot_id}/topics/{topic_key}")
def delete_bot_topic(bot_id: str, topic_key: str, session: Session = Depends(get_session)):
    return delete_topic(session, bot_id=bot_id, topic_key=topic_key)


@router.get("/api/bots/{bot_id}/topic-items")
def list_bot_topic_items(
    bot_id: str,
    topic_key: Optional[str] = None,
    cursor: Optional[int] = None,
    limit: int = 50,
    session: Session = Depends(get_session),
):
    return list_topic_items(session, bot_id=bot_id, topic_key=topic_key, cursor=cursor, limit=limit)


@router.get("/api/bots/{bot_id}/topic-items/stats")
def get_bot_topic_item_stats(bot_id: str, session: Session = Depends(get_session)):
    return get_topic_item_stats(session, bot_id=bot_id)


@router.post("/api/bots/{bot_id}/topic-items/{item_id}/read")
def mark_bot_topic_item_read(bot_id: str, item_id: int, session: Session = Depends(get_session)):
    return mark_topic_item_read(session, bot_id=bot_id, item_id=item_id)


@router.delete("/api/bots/{bot_id}/topic-items/{item_id}")
def delete_bot_topic_item(bot_id: str, item_id: int, session: Session = Depends(get_session)):
    return delete_topic_item(session, bot_id=bot_id, item_id=item_id)