chess-scribe-website/src/reducers/gameReducer.ts

interface IDiagrams {
	ply: number;
	fen: string;
}

export interface IGameState {
	pgn: string;
	headers: string;
	diagrams: IDiagrams[];
	diagramClock: boolean;
}

type GameAction =
	| { type: "SET_GAME"; payload: { pgn: string; headers: "" } }
	| { type: "CLEAR_GAME" };

export const initialGameState = {
	pgn: "",
	headers: "",
	diagrams: [],
	diagramClock: false,
};

export const gameReducer = (state: IGameState, action: GameAction) => {
	switch (action.type) {
		case "SET_GAME":
			return {
				pgn: action.payload.pgn,
				headers: "",
				diagrams: [],
				diagramClock: false,
			};
		case "CLEAR_GAME":
			return initialGameState;
		default:
			return state;
	}
};