import { inject, type InjectionKey, ref, provide, getCurrentInstance } from "vue";
import { Bound } from "./utils";

export type UITool = 
    | "track-unit-type" 
    | "eraser" 
    | "sticking";

export class AppStateStore extends Bound {
    selectedTool = ref<UITool>("track-unit-type");
    activeTrackUnitType = ref(0);
    activeStickingType = ref(1);
    unitMouseStart = ref<string | null>(null);
    selectingUnits = ref(false);
    deselectingUnits = ref(false);
}

const AppStateStoreKey = Symbol("AppStateStore") as InjectionKey<AppStateStore>;

export function useAppStateStore(): AppStateStore {
    return inject(AppStateStoreKey, () => {
        const store = new AppStateStore();
        getCurrentInstance()?.appContext?.app.provide(AppStateStoreKey, store);
        return store;
    }, true);
}