define global state

Author: tknkaa

rr/app/lib/store.ts

@@ -1,19 +1,65 @@
 import { create } from "zustand";
-import { persist } from "zustand/middleware";
 import type { Hai } from "./hai";
+import { sortTehai } from "./hai";
 
 interface GameState {
 	kyoku: number;
 	junme: number;
 	haiyama: Hai[];
 	sutehai: Hai[];
+	// Hai * 13
 	tehai: Hai[];
+	// null as an initial value
+	tsumohai: Hai | null;
 }
 
-const useGameState = create<GameState>()((set) => ({
+interface PlayerAction {
+	// tsumo just after tedashi or tsumogiri
+	tedashi: (index: number) => void;
+	tsumogiri: () => void;
+}
+
+const useGameStore = create<GameState & PlayerAction>()((set, get) => ({
 	kyoku: 1,
 	junme: 1,
 	haiyama: [],
 	sutehai: [],
 	tehai: [],
+	tsumohai: null,
+
+	tedashi: (index) => {
+		const state = get();
+		if (!state.tsumohai) {
+			throw new Error("syohai");
+		}
+		const tsumohai = state.tsumohai;
+
+		if (index < 0 || 12 < index) {
+			throw new Error("index out of tehai length");
+		}
+		const deletedTehai = state.tehai.filter((_, i) => i !== index);
+		const discardedHai = state.tehai[index];
+		set(() => ({
+			kyoku: state.kyoku + 1,
+			junme: state.junme + 1,
+			haiyama: state.haiyama.slice(1),
+			sutehai: [...state.sutehai, discardedHai],
+			tehai: sortTehai([...deletedTehai, tsumohai]),
+			tsumohai: state.haiyama[0],
+		}));
+	},
+	tsumogiri: () => {
+		const state = get();
+		if (!state.tsumohai) {
+			throw new Error("syohai");
+		}
+		const tsumohai = state.tsumohai;
+		set(() => ({
+			kyoku: state.kyoku + 1,
+			junme: state.junme + 1,
+			haiyama: state.haiyama.slice(1),
+			sutehai: [...state.sutehai, tsumohai],
+			tsumohai: state.haiyama[0],
+		}));
+	},
 }));