from typing import List, Optional
from fastapi import APIRouter, Depends, HTTPException, Query, Body
from api.dependency import get_idea_service, get_project_id, get_generation_service
from api.endpoints.auth import get_current_user
from api.service.idea_service import IdeaService
from api.service.generation_service import GenerationService
from models.Idea import Idea
from api.models.GenerationRequest import GenerationResponse, GenerationsResponse
from api.models.IdeaRequest import IdeaCreateRequest, IdeaUpdateRequest, IdeaResponse

router = APIRouter(prefix="/api/ideas", tags=["ideas"])

@router.post("", response_model=Idea)
async def create_idea(
    request: IdeaCreateRequest,
    project_id: Optional[str] = Depends(get_project_id),
    current_user: dict = Depends(get_current_user),
    idea_service: IdeaService = Depends(get_idea_service)
):
    pid = project_id or request.project_id
    
    return await idea_service.create_idea(request.name, request.description, pid, str(current_user["_id"]))

@router.get("", response_model=List[IdeaResponse])
async def get_ideas(
    project_id: Optional[str] = Depends(get_project_id),
    limit: int = 20,
    offset: int = 0,
    current_user: dict = Depends(get_current_user),
    idea_service: IdeaService = Depends(get_idea_service)
):
    return await idea_service.get_ideas(project_id, str(current_user["_id"]), limit, offset)

@router.get("/{idea_id}", response_model=Idea)
async def get_idea(
    idea_id: str,
    idea_service: IdeaService = Depends(get_idea_service)
):
    idea = await idea_service.get_idea(idea_id)
    if not idea:
        raise HTTPException(status_code=404, detail="Idea not found")
    return idea

@router.put("/{idea_id}", response_model=Idea)
async def update_idea(
    idea_id: str,
    request: IdeaUpdateRequest,
    idea_service: IdeaService = Depends(get_idea_service)
):
    idea = await idea_service.update_idea(idea_id, request.name, request.description)
    if not idea:
        raise HTTPException(status_code=404, detail="Idea not found")
    return idea

@router.delete("/{idea_id}")
async def delete_idea(
    idea_id: str,
    idea_service: IdeaService = Depends(get_idea_service)
):
    success = await idea_service.delete_idea(idea_id)
    if not success:
        raise HTTPException(status_code=404, detail="Idea not found or could not be deleted")
    return {"status": "success"}

@router.get("/{idea_id}/generations", response_model=GenerationsResponse)
async def get_idea_generations(
    idea_id: str,
    limit: int = 50,
    offset: int = 0,
    generation_service: GenerationService = Depends(get_generation_service)
):
    # Depending on how generation service implements filtering by idea_id.
    # We might need to update generation_service to support getting by idea_id directly
    # or ensure generic get_generations supports it.
    # Looking at generation_router.py, get_generations doesn't have idea_id arg?
    # Let's check generation_service.get_generations signature again.
    # It has: (character_id, limit, offset, user_id, project_id). NO IDEA_ID.
    # I need to update GenerationService.get_generations too!
    
    # For now, let's assume I will update it.
    return await generation_service.get_generations(idea_id=idea_id, limit=limit, offset=offset)

@router.post("/{idea_id}/generations/{generation_id}")
async def add_generation_to_idea(
    idea_id: str,
    generation_id: str,
    idea_service: IdeaService = Depends(get_idea_service)
):
    success = await idea_service.add_generation_to_idea(idea_id, generation_id)
    if not success:
        raise HTTPException(status_code=404, detail="Idea or Generation not found")
    return {"status": "success"}

@router.delete("/{idea_id}/generations/{generation_id}")
async def remove_generation_from_idea(
    idea_id: str,
    generation_id: str,
    idea_service: IdeaService = Depends(get_idea_service)
):
    success = await idea_service.remove_generation_from_idea(idea_id, generation_id)
    if not success:
        raise HTTPException(status_code=404, detail="Idea or Generation not found")
    return {"status": "success"}