import { Toast } from "tdesign-mobile-vue";
import { useUserStore } from "timi-web";
import StoreAPI from "@/api/StoreAPI";
import type { Store } from "@/types/Store";
import { getCurrentStoreId, readStoredCurrentStoreId, setCurrentStoreId } from "@/utils/store";

export const useCurrentStoreStore = defineStore("currentStore", () => {
	const userStore = useUserStore();
	const storeList = ref<Store[]>([]);
	const currentStoreId = ref(readStoredCurrentStoreId());
	const loginStore = ref<Store>();
	const loginStoreUserId = ref("");
	const isLoading = ref(false);
	let loginStoreRequest: Promise<Store> | undefined;
	let loginStoreRequestUserId = "";

	const currentStore = computed(() => storeList.value.find(item => item.id === currentStoreId.value));
	const currentStoreName = computed(() => currentStore.value?.name || "默认门店");

	async function loadStoreList(): Promise<void> {
		if (isLoading.value) {
			return;
		}

		isLoading.value = true;
		try {
			const result = await StoreAPI.list({
				index: 0,
				size: 1000,
				equalsExample: {
					status: "ACTIVE"
				},
				orderMap: {
					sort: "ASC",
					createdAt: "DESC"
				}
			});
			storeList.value = result.list || [];
			normalizeCurrentStoreId();
		} catch {
			Toast.error("门店列表加载失败");
		} finally {
			isLoading.value = false;
		}
	}

	async function loadLoginStore(): Promise<Store> {
		const loginUserId = userStore.loginUser.user?.id || userStore.loginUser.id || "";
		if (loginStore.value?.id && loginStoreUserId.value === loginUserId) {
			return loginStore.value;
		}

		if (!loginStoreRequest || loginStoreRequestUserId !== loginUserId) {
			loginStoreRequestUserId = loginUserId;
			loginStoreRequest = loadLoginStoreRequest(loginUserId);
		}
		const request = loginStoreRequest;
		try {
			return await request;
		} finally {
			if (loginStoreRequest === request) {
				loginStoreRequest = undefined;
			}
		}
	}

	async function loadLoginStoreRequest(loginUserId: string): Promise<Store> {
		const result = await StoreAPI.loginStore();
		loginStore.value = result;
		loginStoreUserId.value = loginUserId;
		if (result.id) {
			selectStore(result.id);
		}
		return result;
	}

	function selectStore(storeId: string): void {
		if (!storeId) {
			return;
		}

		currentStoreId.value = storeId;
		setCurrentStoreId(storeId);
	}

	function normalizeCurrentStoreId(): void {
		const storedStoreId = getCurrentStoreId();
		if (storeList.value.some(item => item.id === storedStoreId)) {
			selectStore(storedStoreId);
			return;
		}

		const firstStoreId = storeList.value[0]?.id;
		if (firstStoreId) {
			selectStore(firstStoreId);
		}
	}

	return {
		storeList,
		currentStoreId,
		currentStore,
		loginStore,
		currentStoreName,
		isLoading,
		loadStoreList,
		loadLoginStore,
		selectStore
	};
});