import { useRef, useState } from 'react';
import { Player } from '../../Types/Player';
import styled from 'styled-components';

const CommanderDamageGrid = styled.div`
  display: flex;
  flex-direction: row;
  flex-grow: 1;
  width: 100%;
`;

const CommanderDamageContainer = styled.div`
  display: flex;
  flex-direction: row;
  flex-grow: 1;
  width: 100%;
`;

const CommanderDamageButton = styled.button<{ backgroundColor?: string }>`
  display: flex;
  flex-grow: 1;
  border: none;
  height: 10vh;
  outline: none;
  cursor: pointer;
  background-color: ${(props) => props.backgroundColor || 'antiquewhite'};
`;

const CommanderDamageButtonText = styled.p`
  position: relative;
  margin: auto;
  font-size: 1.5rem;
  text-align: center;
  text-size-adjust: auto;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  width: 2rem;
  user-select: none;
`;

const VerticalSeperator = styled.div`
  width: 1px;
  background-color: rgba(0, 0, 0, 1);
`;

type CommanderDamageBarProps = {
  lifeTotal: number;
  setLifeTotal: (lifeTotal: number) => void;
  opponents: Player[];
};

const CommanderDamageBar = ({
  opponents,
  lifeTotal,
  setLifeTotal,
}: CommanderDamageBarProps) => {
  const [commanderDamage, setCommanderDamage] = useState<number[]>(
    Array(opponents.length).fill(0)
  );
  const [partnerCommanderDamage, setPartnerCommanderDamage] = useState<
    number[]
  >(Array(opponents.length).fill(0));

  const timeoutRef = useRef<NodeJS.Timeout | undefined>(undefined);
  const [timeoutFinished, setTimeoutFinished] = useState(false);
  const [hasPressedDown, setHasPressedDown] = useState(false);

  const handleCommanderDamageChange = (index: number, increment: number) => {
    const currentCommanderDamage = commanderDamage[index];
    if (currentCommanderDamage === 0 && increment === -1) {
      return;
    }

    if (currentCommanderDamage === 21 && increment === 1) {
      return;
    }

    const updatedCommanderDamage = [...commanderDamage];
    updatedCommanderDamage[index] += increment;
    setCommanderDamage(updatedCommanderDamage);
    setLifeTotal(lifeTotal - increment);
  };

  const handlePartnerCommanderDamageChange = (
    index: number,
    increment: number
  ) => {
    const currentPartnerCommanderDamage = partnerCommanderDamage[index];
    if (currentPartnerCommanderDamage === 0 && increment === -1) {
      return;
    }

    const updatedPartnerCommanderDamage = [...partnerCommanderDamage];
    updatedPartnerCommanderDamage[index] += increment;

    setPartnerCommanderDamage(updatedPartnerCommanderDamage);
    setLifeTotal(lifeTotal - increment);
  };

  const handleDownInput = (index: number) => {
    setTimeoutFinished(false);
    setHasPressedDown(true);
    timeoutRef.current = setTimeout(() => {
      setTimeoutFinished(true);
      handleCommanderDamageChange(index, -1);
    }, 500);
  };

  const handleUpInput = (index: number) => {
    if (!(hasPressedDown && !timeoutFinished)) {
      return;
    }
    clearTimeout(timeoutRef.current);
    handleCommanderDamageChange(index, 1);
    setHasPressedDown(false);
  };

  const handleLeaveInput = () => {
    setTimeoutFinished(true);
    clearTimeout(timeoutRef.current);
    setHasPressedDown(false);
  };

  const handlePartnerDownInput = (index: number) => {
    setTimeoutFinished(false);
    setHasPressedDown(true);
    timeoutRef.current = setTimeout(() => {
      setTimeoutFinished(true);
      handlePartnerCommanderDamageChange(index, -1);
    }, 500);
  };

  const handlePartnerUpInput = (index: number) => {
    if (!(hasPressedDown && !timeoutFinished)) {
      return;
    }
    clearTimeout(timeoutRef.current);
    handlePartnerCommanderDamageChange(index, 1);
    setHasPressedDown(false);
  };

  const handlePartnerLeaveInput = () => {
    setTimeoutFinished(true);
    clearTimeout(timeoutRef.current);
    setHasPressedDown(false);
  };

  return (
    <CommanderDamageGrid>
      {opponents.map((opponent, index) => {
        return (
          <CommanderDamageContainer>
            <CommanderDamageButton
              key={index}
              onPointerDown={() => handleDownInput(index)}
              onPointerUp={() => handleUpInput(index)}
              onPointerLeave={handleLeaveInput}
              onContextMenu={(
                e: React.MouseEvent<HTMLButtonElement, MouseEvent>
              ) => {
                e.preventDefault();
              }}
              backgroundColor={opponent.color}
            >
              <CommanderDamageButtonText>
                {commanderDamage[index] > 0 ? commanderDamage[index] : ''}
              </CommanderDamageButtonText>
            </CommanderDamageButton>

            {opponent.settings.usePartner && (
              <>
                <VerticalSeperator />
                <CommanderDamageButton
                  key={index}
                  onPointerDown={() => handlePartnerDownInput(index)}
                  onPointerUp={() => handlePartnerUpInput(index)}
                  onPointerLeave={handlePartnerLeaveInput}
                  onContextMenu={(
                    e: React.MouseEvent<HTMLButtonElement, MouseEvent>
                  ) => {
                    e.preventDefault();
                  }}
                  backgroundColor={opponent.color}
                >
                  <CommanderDamageButtonText>
                    {partnerCommanderDamage[index] > 0
                      ? partnerCommanderDamage[index]
                      : ''}
                  </CommanderDamageButtonText>
                </CommanderDamageButton>
              </>
            )}
          </CommanderDamageContainer>
        );
      })}
    </CommanderDamageGrid>
  );
};

export default CommanderDamageBar;