import ApartmentOutlined from "@mui/icons-material/ApartmentOutlined";
import BedroomParentOutlined from "@mui/icons-material/BedroomParentOutlined";
import BlockOutlined from "@mui/icons-material/BlockOutlined";
import CampaignOutlined from "@mui/icons-material/CampaignOutlined";
import CardGiftcardOutlined from "@mui/icons-material/CardGiftcardOutlined";
import CategoryOutlined from "@mui/icons-material/CategoryOutlined";
import CasinoOutlined from "@mui/icons-material/CasinoOutlined";
import DashboardOutlined from "@mui/icons-material/DashboardOutlined";
import EventAvailableOutlined from "@mui/icons-material/EventAvailableOutlined";
import FavoriteBorderOutlined from "@mui/icons-material/FavoriteBorderOutlined";
import FlagOutlined from "@mui/icons-material/FlagOutlined";
import DiamondOutlined from "@mui/icons-material/DiamondOutlined";
import GroupsOutlined from "@mui/icons-material/GroupsOutlined";
import HistoryOutlined from "@mui/icons-material/HistoryOutlined";
import HubOutlined from "@mui/icons-material/HubOutlined";
import ImageOutlined from "@mui/icons-material/ImageOutlined";
import Inventory2Outlined from "@mui/icons-material/Inventory2Outlined";
import LeaderboardOutlined from "@mui/icons-material/LeaderboardOutlined";
import LocalOfferOutlined from "@mui/icons-material/LocalOfferOutlined";
import LoginOutlined from "@mui/icons-material/LoginOutlined";
import ManageAccountsOutlined from "@mui/icons-material/ManageAccountsOutlined";
import MapOutlined from "@mui/icons-material/MapOutlined";
import MenuOpenOutlined from "@mui/icons-material/MenuOpenOutlined";
import PublicOutlined from "@mui/icons-material/PublicOutlined";
import PushPinOutlined from "@mui/icons-material/PushPinOutlined";
import PaidOutlined from "@mui/icons-material/PaidOutlined";
import PersonAddAltOutlined from "@mui/icons-material/PersonAddAltOutlined";
import ReceiptLongOutlined from "@mui/icons-material/ReceiptLongOutlined";
import RedeemOutlined from "@mui/icons-material/RedeemOutlined";
import SendOutlined from "@mui/icons-material/SendOutlined";
import ShieldOutlined from "@mui/icons-material/ShieldOutlined";
import SettingsApplicationsOutlined from "@mui/icons-material/SettingsApplicationsOutlined";
import SportsEsportsOutlined from "@mui/icons-material/SportsEsportsOutlined";
import StarBorderOutlined from "@mui/icons-material/StarBorderOutlined";
import StorefrontOutlined from "@mui/icons-material/StorefrontOutlined";
import TaskAltOutlined from "@mui/icons-material/TaskAltOutlined";
import WalletOutlined from "@mui/icons-material/WalletOutlined";
import WorkspacePremiumOutlined from "@mui/icons-material/WorkspacePremiumOutlined";
import { getRouteByMenuCode } from "@/app/router/routeConfig";

const deprecatedMenuCodes = new Set(["services"]);
const menuLabelOverrides = {
    system: "后台设置",
    "system-users": "后台用户",
    "system-teams": "团队配置",
};

const iconMap = {
    apartment: ApartmentOutlined,
    block: BlockOutlined,
    campaign: CampaignOutlined,
    casino: CasinoOutlined,
    category: CategoryOutlined,
    dashboard: DashboardOutlined,
    event_available: EventAvailableOutlined,
    explore: MapOutlined,
    favorite: FavoriteBorderOutlined,
    flag: FlagOutlined,
    gift: CardGiftcardOutlined,
    inventory: Inventory2Outlined,
    leaderboard: LeaderboardOutlined,
    network: HubOutlined,
    team: GroupsOutlined,
    history: HistoryOutlined,
    image: ImageOutlined,
    login: LoginOutlined,
    map: MapOutlined,
    menu: MenuOpenOutlined,
    operations: ReceiptLongOutlined,
    paid: PaidOutlined,
    person_add: PersonAddAltOutlined,
    public: PublicOutlined,
    push_pin: PushPinOutlined,
    receipt: ReceiptLongOutlined,
    redeem: RedeemOutlined,
    room: BedroomParentOutlined,
    send: SendOutlined,
    settings: SettingsApplicationsOutlined,
    shield: ShieldOutlined,
    sports_esports: SportsEsportsOutlined,
    star: StarBorderOutlined,
    storefront: StorefrontOutlined,
    tag: LocalOfferOutlined,
    task: TaskAltOutlined,
    users: ManageAccountsOutlined,
    wallet: WalletOutlined,
    workspace_premium: WorkspacePremiumOutlined,
};

const topLevelMenuOrder = new Map(
    [
        "overview",
        "app-users",
        "host-org",
        "rooms",
        "app-config",
        "resources",
        "operations",
        "payment",
        "activities",
        "games",
        "geo",
        "system",
    ].map((code, index) => [code, index]),
);

export const fallbackNavigation = [
    routeNavItem("overview", { icon: DashboardOutlined }),
    {
        code: "app-users",
        icon: ManageAccountsOutlined,
        id: "app-users",
        label: "用户管理",
        children: [
            routeNavItem("app-user-list", { icon: ManageAccountsOutlined }),
            routeNavItem("app-user-bans", { icon: BlockOutlined }),
            routeNavItem("app-user-login-logs", { icon: LoginOutlined }),
            routeNavItem("app-user-pretty-ids", { icon: LocalOfferOutlined }),
            routeNavItem("app-user-risk-config", { icon: ShieldOutlined }),
            routeNavItem("app-user-region-blocks", { icon: PublicOutlined }),
        ],
    },
    {
        code: "host-org",
        icon: HubOutlined,
        id: "host-org",
        label: "团队管理",
        children: [
            routeNavItem("host-org-managers", { icon: ManageAccountsOutlined }),
            routeNavItem("host-org-agencies", { icon: ApartmentOutlined }),
            routeNavItem("host-org-bd-leaders", { icon: ShieldOutlined }),
            routeNavItem("host-org-bds", { icon: GroupsOutlined }),
            routeNavItem("host-org-hosts", { icon: ManageAccountsOutlined }),
            routeNavItem("host-agency-policy", { icon: WalletOutlined }),
            routeNavItem("host-salary-settlement", { icon: ReceiptLongOutlined }),
            routeNavItem("host-org-coin-sellers", { icon: WalletOutlined }),
            routeNavItem("host-org-coin-seller-sub-applications", { icon: ReceiptLongOutlined }),
            routeNavItem("host-withdrawals", { icon: ReceiptLongOutlined }),
        ],
    },
    {
        code: "rooms",
        icon: BedroomParentOutlined,
        id: "rooms",
        label: "房间管理",
        children: [
            routeNavItem("room-list", { icon: BedroomParentOutlined }),
            routeNavItem("room-pins", { icon: PushPinOutlined }),
            routeNavItem("room-config", { icon: SettingsApplicationsOutlined }),
            routeNavItem("room-whitelist", { icon: ShieldOutlined }),
            routeNavItem("room-robots", { icon: GroupsOutlined }),
        ],
    },
    {
        code: "app-config",
        icon: SettingsApplicationsOutlined,
        id: "app-config",
        label: "APP配置",
        children: [
            routeNavItem("app-config-h5", { icon: SettingsApplicationsOutlined }),
            routeNavItem("app-config-banners", { icon: ImageOutlined }),
            routeNavItem("app-config-splash-screens", { icon: ImageOutlined }),
            routeNavItem("app-config-popups", { icon: ImageOutlined }),
            routeNavItem("app-config-explore", { icon: MapOutlined }),
            routeNavItem("app-config-versions", { icon: SettingsApplicationsOutlined }),
            routeNavItem("operation-full-server-notice", { icon: CampaignOutlined }),
        ],
    },
    {
        code: "resources",
        icon: Inventory2Outlined,
        id: "resources",
        label: "资源管理",
        children: [
            routeNavItem("resource-list", { icon: Inventory2Outlined }),
            routeNavItem("resource-shop-list", { icon: StorefrontOutlined }),
            routeNavItem("resource-group-list", { icon: CategoryOutlined }),
            routeNavItem("gift-list", { icon: CardGiftcardOutlined }),
            routeNavItem("resource-grant-list", { icon: SendOutlined }),
            routeNavItem("emoji-pack-list", { icon: ImageOutlined }),
        ],
    },
    {
        code: "operations",
        icon: ReceiptLongOutlined,
        id: "operations",
        label: "运营管理",
        children: [
            routeNavItem("operation-coin-ledger", { icon: ReceiptLongOutlined }),
            routeNavItem("operation-coin-seller-ledger", { icon: ReceiptLongOutlined }),
            routeNavItem("operation-coin-adjustment", { icon: WalletOutlined }),
            routeNavItem("lucky-gift", { icon: RedeemOutlined }),
            routeNavItem("operation-reports", { icon: FlagOutlined }),
            routeNavItem("operation-gift-diamond", { icon: DiamondOutlined }),
            routeNavItem("policy-template", { icon: SettingsApplicationsOutlined }),
        ],
    },
    {
        code: "payment",
        icon: WalletOutlined,
        id: "payment",
        label: "支付管理",
        children: [
            routeNavItem("payment-bill-list", { icon: ReceiptLongOutlined }),
            routeNavItem("payment-third-party", { icon: WalletOutlined }),
            routeNavItem("payment-temporary-links", { icon: ReceiptLongOutlined }),
            routeNavItem("payment-recharge-products", { icon: WalletOutlined }),
        ],
    },
    {
        code: "activities",
        icon: CampaignOutlined,
        id: "activities",
        label: "活动管理",
        children: [
            routeNavItem("daily-task-list", { icon: TaskAltOutlined }),
            routeNavItem("registration-reward", { icon: CardGiftcardOutlined }),
            routeNavItem("first-recharge-reward", { icon: CardGiftcardOutlined }),
            routeNavItem("cumulative-recharge-reward", { icon: WorkspacePremiumOutlined }),
            routeNavItem("invite-activity-reward", { icon: PersonAddAltOutlined }),
            routeNavItem("seven-day-checkin", { icon: EventAvailableOutlined }),
            routeNavItem("room-rocket", { icon: RedeemOutlined }),
            routeNavItem("room-turnover-reward", { icon: PaidOutlined }),
            routeNavItem("wheel", { icon: CasinoOutlined }),
            routeNavItem("weekly-star", { icon: StarBorderOutlined }),
            routeNavItem("agency-opening", { icon: StorefrontOutlined }),
            routeNavItem("user-leaderboard", { icon: LeaderboardOutlined }),
            routeNavItem("red-packet", { icon: RedeemOutlined }),
            routeNavItem("cp-config", { icon: FavoriteBorderOutlined }),
            routeNavItem("cp-weekly-rank", { icon: LeaderboardOutlined }),
            routeNavItem("vip-config", { icon: WorkspacePremiumOutlined }),
        ],
    },
    {
        code: "games",
        icon: SportsEsportsOutlined,
        id: "games",
        label: "游戏管理",
        children: [
            routeNavItem("game-list", { icon: SportsEsportsOutlined }),
            routeNavItem("self-games", { icon: SettingsApplicationsOutlined }),
            routeNavItem("game-robots", { icon: ManageAccountsOutlined }),
            routeNavItem("room-rps-config", { icon: SettingsApplicationsOutlined }),
            routeNavItem("room-rps-challenges", { icon: HistoryOutlined }),
        ],
    },
    {
        code: "geo",
        icon: MapOutlined,
        id: "geo",
        label: "地区管理",
        children: [
            routeNavItem("host-org-countries", { icon: PublicOutlined }),
            routeNavItem("host-org-regions", { icon: MapOutlined }),
        ],
    },
    {
        code: "system",
        icon: SettingsApplicationsOutlined,
        id: "system",
        label: "后台设置",
        children: [
            routeNavItem("system-users", { icon: ManageAccountsOutlined }),
            routeNavItem("system-roles", { icon: ShieldOutlined }),
            routeNavItem("system-menus", { icon: MenuOpenOutlined }),
            routeNavItem("logs-login", { icon: LoginOutlined }),
            routeNavItem("logs-operations", { icon: ReceiptLongOutlined }),
            routeNavItem("system-teams", { icon: GroupsOutlined }),
        ],
    },
];

export function mapBackendMenus(menus = [], options = { relocate: true }) {
    const sourceMenus = options.relocate ? orderTopLevelMenus(relocateBackendMenus(menus)) : menus;
    return sourceMenus
        .map((item) => {
            if (deprecatedMenuCodes.has(item.code)) {
                return null;
            }

            const route = item.code ? getRouteByMenuCode(item.code) : undefined;
            const children = item.children?.length ? mapBackendMenus(item.children, { relocate: false }) : undefined;

            return {
                children: children?.length ? children : undefined,
                code: item.code,
                icon: iconMap[item.icon] || MenuOpenOutlined,
                id: item.code || String(item.id),
                label: menuLabelOverrides[item.code] || route?.label || item.label,
                path: route?.path || item.path,
                permissionCode: route?.permission || item.permissionCode,
            };
        })
        .filter(Boolean);
}

function relocateBackendMenus(menus = []) {
    return relocateFullServerNoticeToAppConfig(relocateLogMenusToSystem(menus));
}

function relocateFullServerNoticeToAppConfig(menus = []) {
    let movedItem = null;

    function strip(items = []) {
        return items
            .map((item) => {
                if (item.code === "operation-full-server-notice") {
                    if (!movedItem) {
                        movedItem = item;
                    }
                    return null;
                }
                const children = item.children?.length ? strip(item.children) : item.children;
                return children === item.children ? item : { ...item, children };
            })
            .filter(Boolean);
    }

    const strippedMenus = strip(menus);
    if (!movedItem) {
        return strippedMenus;
    }

    return strippedMenus.map((item) =>
        item.code === "app-config"
            ? {
                  ...item,
                  children: [
                      ...(item.children || []),
                      {
                          ...movedItem,
                          icon: movedItem.icon || "campaign",
                          label: "系统消息推送",
                          path: "/app-config/system-message-push",
                          permissionCode: movedItem.permissionCode || "full-server-notice:view",
                      },
                  ],
              }
            : item,
    );
}

function orderTopLevelMenus(menus = []) {
    return menus
        .map((item, index) => ({ index, item }))
        .sort((left, right) => {
            const leftOrder = topLevelMenuOrder.get(left.item.code) ?? Number.MAX_SAFE_INTEGER;
            const rightOrder = topLevelMenuOrder.get(right.item.code) ?? Number.MAX_SAFE_INTEGER;
            return leftOrder === rightOrder ? left.index - right.index : leftOrder - rightOrder;
        })
        .map(({ item }) => item);
}

function relocateLogMenusToSystem(menus = []) {
    const systemMenu = menus.find((item) => item.code === "system");
    const logsMenu = menus.find((item) => item.code === "logs");
    if (!systemMenu || !logsMenu?.children?.length) {
        return menus.filter((item) => item.code !== "logs");
    }

    const systemChildren = systemMenu.children || [];
    const existingCodes = new Set(systemChildren.map((item) => item.code));
    const movedLogChildren = logsMenu.children.filter((item) => !existingCodes.has(item.code));
    return menus
        .filter((item) => item.code !== "logs")
        .map((item) =>
            item.code === "system"
                ? {
                      ...item,
                      children: [...systemChildren, ...movedLogChildren],
                  }
                : item,
        );
}

export function filterNavigationByPermission(items = [], can) {
    return items
        .map((item) => {
            const children = filterNavigationByPermission(item.children || [], can);
            const canViewItem = !item.permissionCode || can(item.permissionCode);

            if (children.length || (item.path && canViewItem)) {
                return { ...item, children: children.length ? children : undefined };
            }

            return null;
        })
        .filter(Boolean);
}

export function mergeNavigationItems(primaryItems = [], fallbackItems = [], orderItems = fallbackNavigation) {
    const merged = primaryItems.map((item) => ({ ...item }));
    const itemByCode = new Map(merged.map((item) => [item.code, item]));
    const orderItemByCode = new Map(orderItems.map((item) => [item.code, item]));

    fallbackItems.forEach((fallbackItem) => {
        const existing = itemByCode.get(fallbackItem.code);
        if (!existing) {
            merged.push(fallbackItem);
            return;
        }

        if (fallbackItem.children?.length) {
            existing.children = mergeNavigationItems(
                existing.children || [],
                fallbackItem.children,
                orderItemByCode.get(fallbackItem.code)?.children || fallbackItem.children,
            );
        }
    });

    return orderNavigationItemsByFallback(merged, orderItems);
}

function orderNavigationItemsByFallback(items = [], fallbackItems = []) {
    const fallbackOrder = new Map(fallbackItems.map((item, index) => [item.code, index]));
    return items
        .map((item, index) => ({ index, item }))
        .sort((left, right) => {
            const leftOrder = fallbackOrder.get(left.item.code) ?? Number.MAX_SAFE_INTEGER;
            const rightOrder = fallbackOrder.get(right.item.code) ?? Number.MAX_SAFE_INTEGER;
            return leftOrder === rightOrder ? left.index - right.index : leftOrder - rightOrder;
        })
        .map(({ item }) => item);
}

export function findNavItemByPath(pathname, items = fallbackNavigation) {
    let fallback = null;

    for (const item of items) {
        if (item.path && pathname.startsWith(item.path)) {
            fallback = item;
        }

        if (item.children?.length) {
            const child = findNavItemByPath(pathname, item.children);
            if (child) {
                return child;
            }
        }
    }

    return fallback;
}

function routeNavItem(menuCode, options = {}) {
    const route = getRouteByMenuCode(menuCode);
    return {
        code: menuCode,
        icon: options.icon || MenuOpenOutlined,
        id: menuCode,
        label: route?.label || menuCode,
        path: route?.path,
        permissionCode: route?.permission,
    };
}