from typing import List, Optional
from fastapi import APIRouter, HTTPException, status, Query

from src.plant_transaction_data_simulations.model import PlantTransactionDataSimulations
from src.plant_transaction_data_simulations.schema import (
    PlantTransactionDataSimulationsPagination,
    PlantTransactionDataSimulationsRead,
    PlantChartDataSimulations,
    PlantTransactionChartSimulations,
    PlantTransactionDataSimulationsCreate,
    PlantTransactionDataSimulationsUpdate,
    PlantTransactionFSImportSimulations,
)
from src.plant_transaction_data_simulations.service import (
    get,
    get_all,
    get_charts,
    create,
    update,
    delete,
    update_fs_charts_from_matrix,
)

from src.database.service import CommonParameters, search_filter_sort_paginate
from src.database.core import DbSession
from src.auth.service import CurrentUser
from src.models import StandardResponse

router = APIRouter()


@router.get("", response_model=StandardResponse[PlantTransactionDataSimulationsPagination])
async def get_transaction_datas(
    db_session: DbSession,
    common: CommonParameters,
    items_per_page: Optional[int] = Query(5),
    search: Optional[str] = Query(None),
):
    """Get all transaction_data pagination."""
    plant_transaction_data = await get_all(
        db_session=db_session,
        items_per_page=items_per_page,
        search=search,
        common=common,
    )
    # return
    return StandardResponse(
        data=plant_transaction_data,
        message="Data retrieved successfully",
    )

@router.get("/charts", response_model=StandardResponse[PlantChartDataSimulations])
async def get_chart_data(db_session: DbSession, common: CommonParameters):
    chart_data, bep_year, bep_total_lcc = await get_charts(
        db_session=db_session, common=common
    )
    if not chart_data:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="No chart data found.",
        )
    return StandardResponse(
        data={
            "items": chart_data,
            "bep_year": bep_year,
            "bep_total_lcc": bep_total_lcc,
        },
        message="Data retrieved successfully",
    )


@router.post(
    "/charts/fs/import",
    response_model=StandardResponse[List[PlantTransactionDataSimulationsRead]],
)
async def import_fs_chart_data(
    db_session: DbSession,
    payload: PlantTransactionFSImportSimulations,
    current_user: CurrentUser,
):
    updated_records, missing_years = await update_fs_charts_from_matrix(
        db_session=db_session,
        payload=payload,
        updated_by=current_user.name,
    )

    if not updated_records:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="No plant transaction data found for the supplied years.",
        )

    message = "FS chart data updated successfully"
    if missing_years:
        years_text = ", ".join(str(year) for year in sorted(missing_years))
        message += f"; missing years: {years_text}"

    return StandardResponse(data=updated_records, message=message)

@router.get(
    "/{transaction_data_id}", response_model=StandardResponse[PlantTransactionDataSimulationsRead]
)
async def get_transaction_data(db_session: DbSession, transaction_data_id: str):
    transaction_data = await get(
        db_session=db_session, transaction_data_id=transaction_data_id
    )
    if not transaction_data:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="A data with this id does not exist.",
        )

    return StandardResponse(
        data=transaction_data, message="Data retrieved successfully"
    )


@router.post("", response_model=StandardResponse[PlantTransactionDataSimulationsRead])
async def create_transaction_data(
    db_session: DbSession,
    transaction_data_in: PlantTransactionDataSimulationsCreate,
    current_user: CurrentUser,
):
    transaction_data_in.created_by = current_user.name
    transaction_data = await create(
        db_session=db_session, transaction_data_in=transaction_data_in
    )

    return StandardResponse(data=transaction_data, message="Data created successfully")

@router.put(
    "/bulk", response_model=StandardResponse[List[PlantTransactionDataSimulationsRead]]
)
async def bulk_update_transaction_data(
    db_session: DbSession,
    ids: List[str],
    updates: List[PlantTransactionDataSimulationsUpdate],
    current_user: CurrentUser,
):
    if len(ids) != len(updates):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="The number of IDs must match the number of update objects.",
        )

    # Set updated_by for each update object
    for update_obj in updates:
        update_obj.updated_by = current_user.name

    updated_records = await update(
        db_session=db_session,
        ids=ids,
        updates=updates,
    )

    return StandardResponse(
        data=updated_records,
        message="Bulk update completed successfully",
    )

@router.put(
    "/{transaction_data_id}", response_model=StandardResponse[PlantTransactionDataSimulationsRead]
)
async def update_transaction_data(
    db_session: DbSession,
    transaction_data_id: str,
    transaction_data_in: PlantTransactionDataSimulationsUpdate,
    current_user: CurrentUser,
):
    transaction_data = await get(
        db_session=db_session, transaction_data_id=transaction_data_id
    )

    if not transaction_data:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="A data with this id does not exist.",
        )
    transaction_data_in.updated_by = current_user.name

    return StandardResponse(
        data=await update(
            db_session=db_session,
            transaction_data=transaction_data,
            transaction_data_in=transaction_data_in,
        ),
        message="Data updated successfully",
    )


@router.delete(
    "/{transaction_data_id}", response_model=StandardResponse[PlantTransactionDataSimulationsRead]
)
async def delete_transaction_data(db_session: DbSession, transaction_data_id: str):
    transaction_data = await get(
        db_session=db_session, transaction_data_id=transaction_data_id
    )

    if not transaction_data:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=[{"msg": "A data with this id does not exist."}],
        )

    await delete(db_session=db_session, transaction_data_id=transaction_data_id)

    return StandardResponse(message="Data deleted successfully", data=transaction_data)