"""Forum MVP API endpoints. Job ID: MTAD-IMPL-2025-11-18-CL"""
from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from app.database import get_db
from app.models import ForumCategory, ForumThread, ForumPost
import uuid

router = APIRouter()

@router.get("/categories")
async def list_categories(db: Session = Depends(get_db)):
    """List all forum categories."""
    categories = db.query(ForumCategory).order_by(ForumCategory.order).all()
    return {"items": categories}

@router.get("/categories/{category_id}/threads")
async def list_threads(category_id: str, skip: int = 0, limit: int = 10, db: Session = Depends(get_db)):
    """List threads in a category."""
    threads = db.query(ForumThread).filter(ForumThread.category_id == category_id).offset(skip).limit(limit).all()
    return {"items": threads}

@router.get("/threads/{thread_id}/posts")
async def list_posts(thread_id: str, skip: int = 0, limit: int = 20, db: Session = Depends(get_db)):
    """List posts in a thread."""
    posts = db.query(ForumPost).filter(ForumPost.thread_id == thread_id, ForumPost.deleted_at.is_(None)).offset(skip).limit(limit).all()
    return {"items": posts}

@router.post("/categories")
async def create_category(name: str, db: Session = Depends(get_db)):
    """Create forum category (admin only)."""
    # Mock implementation for MVP
    category = ForumCategory(
        id=str(uuid.uuid4()),
        name=name,
        slug=name.lower().replace(" ", "-"),
        description=f"Discussions about {name}",
        order=0
    )
    db.add(category)
    db.commit()
    return category

@router.post("/threads")
async def create_thread(category_id: str, title: str, content: str, user_id: str = "test-user", db: Session = Depends(get_db)):
    """Create forum thread."""
    # Mock user for MVP
    thread = ForumThread(
        id=str(uuid.uuid4()),
        category_id=category_id,
        author_id=user_id,
        title=title,
        slug=title.lower().replace(" ", "-"),
    )
    db.add(thread)
    
    # Create initial post
    post = ForumPost(
        id=str(uuid.uuid4()),
        thread_id=thread.id,
        author_id=user_id,
        content=content
    )
    db.add(post)
    
    db.commit()
    return thread

@router.post("/posts")
async def create_post(thread_id: str, content: str, user_id: str = "test-user", db: Session = Depends(get_db)):
    """Create forum post."""
    post = ForumPost(
        id=str(uuid.uuid4()),
        thread_id=thread_id,
        author_id=user_id,
        content=content
    )
    db.add(post)
    db.commit()
    return post