import { useCallback, useEffect, useMemo, useState } from "react";
import { parseForm } from "@/shared/forms/validation";
import { usePaginatedQuery } from "@/shared/hooks/usePaginatedQuery.js";
import { useToast } from "@/shared/ui/ToastProvider.jsx";
import { getLuckyGiftConfig, listLuckyGiftDraws, updateLuckyGiftConfig } from "@/features/lucky-gift/api";
import { emptyLuckyGiftForm, formFromConfig, payloadFromLuckyGiftForm } from "@/features/lucky-gift/configModel.js";
import { useLuckyGiftAbilities } from "@/features/lucky-gift/permissions.js";
import { luckyGiftConfigFormSchema } from "@/features/lucky-gift/schema";

const pageSize = 10;
const emptyDraws = { items: [], page: 1, pageSize, total: 0 };

export function useLuckyGiftPage() {
    const abilities = useLuckyGiftAbilities();
    const { showToast } = useToast();
    const [config, setConfig] = useState(null);
    const [configDrawerOpen, setConfigDrawerOpen] = useState(false);
    const [form, setForm] = useState(emptyLuckyGiftForm());
    const [configLoading, setConfigLoading] = useState(false);
    const [configSaving, setConfigSaving] = useState(false);
    const [giftId, setGiftId] = useState("");
    const [userId, setUserId] = useState("");
    const [roomId, setRoomId] = useState("");
    const [status, setStatus] = useState("");
    const [page, setPage] = useState(1);

    const drawFilters = useMemo(
        () => ({ gift_id: giftId, room_id: roomId, status, user_id: userId }),
        [giftId, roomId, status, userId],
    );
    const {
        data: draws = emptyDraws,
        error: drawsError,
        loading: drawsLoading,
        reload: reloadDraws,
    } = usePaginatedQuery({
        errorMessage: "加载幸运礼物记录失败",
        fetcher: listLuckyGiftDraws,
        filters: drawFilters,
        page,
        pageSize,
        queryKey: ["lucky-gift-draws", drawFilters, page],
    });

    const reloadConfig = useCallback(async () => {
        setConfigLoading(true);
        try {
            const nextConfig = await getLuckyGiftConfig();
            setConfig(nextConfig);
            setForm(formFromConfig(nextConfig));
        } catch (err) {
            showToast(err.message || "加载幸运礼物配置失败", "error");
        } finally {
            setConfigLoading(false);
        }
    }, [showToast]);

    useEffect(() => {
        void reloadConfig();
    }, [reloadConfig]);

    const openConfigDrawer = useCallback(() => {
        setForm(config ? formFromConfig(config) : emptyLuckyGiftForm());
        setConfigDrawerOpen(true);
    }, [config]);

    const closeConfigDrawer = useCallback(() => {
        setConfigDrawerOpen(false);
        setForm(config ? formFromConfig(config) : emptyLuckyGiftForm());
    }, [config]);

    const submitConfig = async (event) => {
        event.preventDefault();
        if (!abilities.canUpdate) {
            return;
        }
        setConfigSaving(true);
        try {
            const parsed = parseForm(luckyGiftConfigFormSchema, form);
            const saved = await updateLuckyGiftConfig(payloadFromLuckyGiftForm(parsed, config));
            setConfig(saved);
            setForm(formFromConfig(saved));
            setConfigDrawerOpen(false);
            showToast("幸运礼物配置已保存", "success");
            await reloadDraws();
        } catch (err) {
            showToast(err.message || "保存幸运礼物配置失败", "error");
        } finally {
            setConfigSaving(false);
        }
    };

    const changeGiftId = (value) => {
        setGiftId(value);
        setPage(1);
    };
    const changeUserId = (value) => {
        setUserId(value);
        setPage(1);
    };
    const changeRoomId = (value) => {
        setRoomId(value);
        setPage(1);
    };
    const changeStatus = (value) => {
        setStatus(value);
        setPage(1);
    };
    const resetDrawFilters = () => {
        setGiftId("");
        setUserId("");
        setRoomId("");
        setStatus("");
        setPage(1);
    };

    return {
        abilities,
        changeGiftId,
        changeRoomId,
        changeStatus,
        changeUserId,
        closeConfigDrawer,
        config,
        configDrawerOpen,
        configLoading,
        configSaving,
        draws,
        drawsError,
        drawsLoading,
        form,
        giftId,
        openConfigDrawer,
        page,
        reloadConfig,
        reloadDraws,
        resetDrawFilters,
        roomId,
        setForm,
        setPage,
        status,
        submitConfig,
        userId,
    };
}