from fastapi import APIRouter, Depends, HTTPException, Query, Response
from typing import List, Optional
from pandas import DataFrame
import logging
import pydantic

from ..db_engine import db, Transaction, Team, Player, model_to_dict, chunked, fn
from ..dependencies import (
    oauth2_scheme,
    valid_token,
    PRIVATE_IN_SCHEMA,
    handle_db_errors,
)

logger = logging.getLogger("discord_app")

router = APIRouter(prefix="/api/v3/transactions", tags=["transactions"])


class TransactionModel(pydantic.BaseModel):
    week: int
    player_id: int
    oldteam_id: int
    newteam_id: int
    season: int
    moveid: str
    cancelled: Optional[bool] = False
    frozen: Optional[bool] = False


class TransactionList(pydantic.BaseModel):
    count: int
    moves: List[TransactionModel]


@router.get("")
@handle_db_errors
async def get_transactions(
    season,
    team_abbrev: list = Query(default=None),
    week_start: Optional[int] = 0,
    week_end: Optional[int] = None,
    cancelled: Optional[bool] = None,
    frozen: Optional[bool] = None,
    player_name: list = Query(default=None),
    player_id: list = Query(default=None),
    move_id: Optional[str] = None,
    is_trade: Optional[bool] = None,
    short_output: Optional[bool] = False,
):
    if season:
        transactions = Transaction.select_season(season)
    else:
        transactions = Transaction.select()

    if team_abbrev is not None:
        t_list = [x.upper() for x in team_abbrev]
        these_teams = Team.select().where(fn.UPPER(Team.abbrev) << t_list)
        transactions = transactions.where(
            (Transaction.newteam << these_teams) | (Transaction.oldteam << these_teams)
        )
    if week_start is not None:
        transactions = transactions.where(Transaction.week >= week_start)
    if week_end is not None:
        transactions = transactions.where(Transaction.week <= week_end)
    if move_id:
        transactions = transactions.where(Transaction.moveid == move_id)
    if player_id or player_name:
        if player_id:
            p_list = Player.select().where(Player.id << player_id)
            transactions = transactions.where(Transaction.player << p_list)
        else:
            p_list = [x.lower() for x in player_name]
            these_players = Player.select().where(fn.Lower(Player.name) << p_list)
            transactions = transactions.where(Transaction.player << these_players)

    if cancelled:
        transactions = transactions.where(Transaction.cancelled == 1)
    else:
        transactions = transactions.where(Transaction.cancelled == 0)

    if frozen:
        transactions = transactions.where(Transaction.frozen == 1)
    else:
        transactions = transactions.where(Transaction.frozen == 0)

    if is_trade is not None:
        raise HTTPException(
            status_code=501, detail="The is_trade parameter is not implemented, yet"
        )

    transactions = transactions.order_by(-Transaction.week, Transaction.moveid)

    return_trans = {
        "count": transactions.count(),
        "transactions": [
            model_to_dict(x, recurse=not short_output) for x in transactions
        ],
    }

    db.close()
    return return_trans


@router.patch("/{move_id}", include_in_schema=PRIVATE_IN_SCHEMA)
@handle_db_errors
async def patch_transactions(
    move_id,
    token: str = Depends(oauth2_scheme),
    frozen: Optional[bool] = None,
    cancelled: Optional[bool] = None,
):
    if not valid_token(token):
        logger.warning(f"patch_transactions - Bad Token: {token}")
        raise HTTPException(status_code=401, detail="Unauthorized")

    these_moves = Transaction.select().where(Transaction.moveid == move_id)
    if these_moves.count() == 0:
        db.close()
        raise HTTPException(status_code=404, detail=f"Move ID {move_id} not found")

    if frozen is not None:
        for x in these_moves:
            x.frozen = frozen
            x.save()
    if cancelled is not None:
        for x in these_moves:
            x.cancelled = cancelled
            x.save()

    db.close()
    return f"Updated {these_moves.count()} transactions"


@router.post("/", include_in_schema=PRIVATE_IN_SCHEMA)
@handle_db_errors
async def post_transactions(
    moves: TransactionList, token: str = Depends(oauth2_scheme)
):
    if not valid_token(token):
        logger.warning(f"post_transactions - Bad Token: {token}")
        raise HTTPException(status_code=401, detail="Unauthorized")

    all_moves = []

    all_team_ids = list(
        set(x.oldteam_id for x in moves.moves) | set(x.newteam_id for x in moves.moves)
    )
    all_player_ids = list(set(x.player_id for x in moves.moves))
    found_team_ids = set(
        t.id for t in Team.select(Team.id).where(Team.id << all_team_ids)
    )
    found_player_ids = set(
        p.id for p in Player.select(Player.id).where(Player.id << all_player_ids)
    )

    for x in moves.moves:
        if x.oldteam_id not in found_team_ids:
            raise HTTPException(
                status_code=404, detail=f"Team ID {x.oldteam_id} not found"
            )
        if x.newteam_id not in found_team_ids:
            raise HTTPException(
                status_code=404, detail=f"Team ID {x.newteam_id} not found"
            )
        if x.player_id not in found_player_ids:
            raise HTTPException(
                status_code=404, detail=f"Player ID {x.player_id} not found"
            )

        all_moves.append(x.dict())

    with db.atomic():
        for batch in chunked(all_moves, 15):
            Transaction.insert_many(batch).on_conflict_ignore().execute()

    db.close()
    return f"{len(all_moves)} transactions have been added"


@router.delete("/{move_id}", include_in_schema=PRIVATE_IN_SCHEMA)
@handle_db_errors
async def delete_transactions(move_id, token: str = Depends(oauth2_scheme)):
    if not valid_token(token):
        logger.warning(f"delete_transactions - Bad Token: {token}")
        raise HTTPException(status_code=401, detail="Unauthorized")

    delete_query = Transaction.delete().where(Transaction.moveid == move_id)

    count = delete_query.execute()
    db.close()
    if count > 0:
        return f"Removed {count} transactions"
    else:
        raise HTTPException(
            status_code=418,
            detail=f"Well slap my ass and call me a teapot; "
            f"I did not delete any records",
        )