from typing import List
from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.ext.asyncio import AsyncSession
from app.model.transaction import Transaction as TransactionModel
from app.model.income_statement import IncomeStatement as IncomeStatementModel
from app.schema.index import IncomeStatementCreateRequest, IncomeStatementResponse
from app.engine.postgresdb import get_db_session
from app.service.income_statement import call_llm_to_create_income_statement

income_statement_router = r = APIRouter(prefix="/api/v1/income_statement", tags=["income_statement"])


@r.post(
    "/",
    responses={
        200: {"description": "New transaction created"},
        400: {"description": "Bad request"},
        500: {"description": "Internal server error"},
    },
)
async def create_income_statement(payload: IncomeStatementCreateRequest, db: AsyncSession = Depends(get_db_session)) -> None:
    try:
        await call_llm_to_create_income_statement(payload, db)

    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))


@r.get(
    "/user/{user_id}",
    response_model=List[IncomeStatementResponse],
    responses={
        200: {"description": "New user created"},
        400: {"description": "Bad request"},
        204: {"description": "No content"},
        500: {"description": "Internal server error"},
    },
)
async def get_income_statements(
    user_id: int, db: AsyncSession = Depends(get_db_session)
) -> List[IncomeStatementResponse]:
    """
    Retrieve all income statements.
    """
    result = await IncomeStatementModel.get_by_user(db, user_id)
    if len(result) == 0:
        raise HTTPException(status_code=status.HTTP_204_NO_CONTENT, detail="No income statements found for this user")
    return result


@r.get(
    "/report/{report_id}",
    response_model=IncomeStatementResponse,
    responses={
        200: {"description": "Income statement found"},
        404: {"description": "Income statement not found"},
        500: {"description": "Internal server error"},
    },
)
async def get_income_statement(report_id: int, db: AsyncSession = Depends(get_db_session)) -> IncomeStatementResponse:
    income_statement = await IncomeStatementModel.get(db, id=report_id)
    if not income_statement:
        raise HTTPException(status_code=404, detail="Income statement not found")
    return income_statement