Application-Web/front/views/Editor.tsx

import { CSSProperties, useRef, useState } from "react"
import "../style/editor.css"
import TitleInput from "../components/TitleInput"
import { API } from "../Constants"
import { BasketCourt } from "../components/editor/BasketCourt"

import { Rack } from "../components/Rack"
import { PlayerPiece } from "../components/editor/PlayerPiece"
import { Player } from "../data/Player"
import { Team } from "../data/Team"

const ERROR_STYLE: CSSProperties = {
    borderColor: "red",
}

/**
 * information about a player that is into a rack
 */
interface RackedPlayer {
    team: Team
    key: string
}

export default function Editor({ id, name }: { id: number; name: string }) {
    const [style, setStyle] = useState<CSSProperties>({})
    const positions = ["1", "2", "3", "4", "5"]
    const [allies, setAllies] = useState(
        positions.map((key) => ({ team: Team.Allies, key })),
    )
    const [opponents, setOpponents] = useState(
        positions.map((key) => ({ team: Team.Opponents, key })),
    )

    const [players, setPlayers] = useState<Player[]>([])
    const courtDivContentRef = useRef<HTMLDivElement>(null)

    const canDetach = (ref: HTMLDivElement) => {
        const refBounds = ref.getBoundingClientRect()
        const courtBounds = courtDivContentRef.current!.getBoundingClientRect()

        // check if refBounds overlaps courtBounds
        return !(
            refBounds.top > courtBounds.bottom ||
            refBounds.right < courtBounds.left ||
            refBounds.bottom < courtBounds.top ||
            refBounds.left > courtBounds.right
        )
    }

    const onPieceDetach = (ref: HTMLDivElement, element: RackedPlayer) => {
        const refBounds = ref.getBoundingClientRect()
        const courtBounds = courtDivContentRef.current!.getBoundingClientRect()

        const relativeXPixels = refBounds.x - courtBounds.x
        const relativeYPixels = refBounds.y - courtBounds.y

        const xRatio = relativeXPixels / courtBounds.width
        const yRatio = relativeYPixels / courtBounds.height

        setPlayers((players) => {
            return [
                ...players,
                {
                    id: players.length,
                    team: element.team,
                    role: element.key,
                    rightRatio: xRatio,
                    bottomRatio: yRatio,
                },
            ]
        })
    }

    return (
        <div id="main-div">
            <div id="topbar-div">
                <div>LEFT</div>
                <TitleInput
                    style={style}
                    default_value={name}
                    on_validated={(new_name) => {
                        fetch(`${API}/tactic/${id}/edit/name`, {
                            method: "POST",
                            headers: {
                                Accept: "application/json",
                                "Content-Type": "application/json",
                            },
                            body: JSON.stringify({
                                name: new_name,
                            }),
                        }).then((response) => {
                            if (response.ok) {
                                setStyle({})
                            } else {
                                setStyle(ERROR_STYLE)
                            }
                        })
                    }}
                />
                <div>RIGHT</div>
            </div>
            <div id="edit-div">
                <div id="racks">
                    <Rack
                        id="allies-rack"
                        objects={allies}
                        onChange={setAllies}
                        canDetach={canDetach}
                        onElementDetached={onPieceDetach}
                        render={({ team, key }) => (
                            <PlayerPiece team={team} text={key} key={key} />
                        )}
                    />
                    <Rack
                        id="opponent-rack"
                        objects={opponents}
                        onChange={setOpponents}
                        canDetach={canDetach}
                        onElementDetached={onPieceDetach}
                        render={({ team, key }) => (
                            <PlayerPiece team={team} text={key} key={key} />
                        )}
                    />
                </div>
                <div id="court-div">
                    <div id="court-div-bounds" ref={courtDivContentRef}>
                        <BasketCourt
                            players={players}
                            onPlayerRemove={(player) => {
                                setPlayers((players) => {
                                    const idx = players.indexOf(player)
                                    return players.toSpliced(idx, 1)
                                })
                                switch (player.team) {
                                    case Team.Opponents:
                                        setOpponents((opponents) => [
                                            ...opponents,
                                            {
                                                team: player.team,
                                                pos: player.role,
                                                key: player.role,
                                            },
                                        ])
                                        break
                                    case Team.Allies:
                                        setAllies((allies) => [
                                            ...allies,
                                            {
                                                team: player.team,
                                                pos: player.role,
                                                key: player.role,
                                            },
                                        ])
                                }
                            }}
                        />
                    </div>
                </div>
            </div>
        </div>
    )
}