import { ComponentPublicInstance } from 'vue';

declare const CHECK_STATUS_MAP: {
    readonly checked: "checked";
    readonly unchecked: "unchecked";
    readonly indeterminate: "indeterminate";
};

type TreeKey = string | number;
type CheckStatus = typeof CHECK_STATUS_MAP[keyof typeof CHECK_STATUS_MAP];
type TreeModelValue = TreeKey | TreeKey[] | null;
interface TreeDataItem {
    [key: string]: any;
}
interface TreeNode {
    id: TreeKey;
    label: string;
    append: string;
    icon: string;
    path: string[];
    source: TreeDataItem;
    parentId?: TreeKey;
    parentIds: TreeKey[];
    parents: TreeDataItem[];
    level: number;
    disabled: boolean;
    checked: CheckStatus;
    expanded: boolean;
    visible: boolean;
    isLeaf: boolean;
    loaded: boolean;
    loading: boolean;
    loadError: unknown;
}
interface TreeProps {
    id: string;
    label: string;
    children: string;
    disabled?: string;
    leaf?: string;
    append?: string;
    icon?: string;
}
interface TreeCheckChangePayload {
    value: TreeModelValue;
    keys: TreeKey[];
    nodes: TreeNode[];
    /** Current half-checked keys in linked multiple-selection mode. */
    halfCheckedKeys: TreeKey[];
    /** Current half-checked nodes in linked multiple-selection mode. */
    halfCheckedNodes: TreeNode[];
    node: TreeNode;
}
interface TreeLoadPayload {
    node: TreeNode;
    children: TreeDataItem[];
}
interface TreeLoadErrorPayload {
    node: TreeNode;
    error: unknown;
}
interface TreeScrollToOptions {
    /** Expand ancestors before locating the node. */
    expandParents?: boolean;
}
interface TreeExpandPayload {
    expanded: boolean;
    node: TreeNode;
}
interface TreeNodeClickPayload {
    id: TreeKey;
    node: TreeNode;
    path: TreeNode[];
}
interface TreeFilterPayload {
    value: string;
    /** Visible keys after filtering, including direct matches, ancestors and descendants. */
    keys: TreeKey[];
    /** Visible nodes after filtering, including direct matches, ancestors and descendants. */
    nodes: TreeNode[];
    /** Keys directly matched by the built-in or custom filter rule. */
    matchedKeys: TreeKey[];
    /** Nodes directly matched by the built-in or custom filter rule. */
    matchedNodes: TreeNode[];
}
interface TreeSlotProps {
    node: TreeNode;
    data: TreeDataItem;
    path: TreeNode[];
}
interface TreeEmptySlotProps {
    filterValue: string;
}
interface UniTreeViewSlots {
    default?: (props: TreeSlotProps) => unknown;
    label?: (props: TreeSlotProps) => unknown;
    icon?: (props: TreeSlotProps) => unknown;
    append?: (props: TreeSlotProps) => unknown;
    empty?: (props: TreeEmptySlotProps) => unknown;
    "empty-filter"?: (props: TreeEmptySlotProps) => unknown;
}
interface UniTreeViewProps {
    /** Current selected value. Single select uses one key, multiple select uses an array. */
    modelValue?: TreeModelValue;
    /** Tree data. */
    data?: TreeDataItem[];
    /** Filter keyword. Matching nodes and their related branch stay visible. */
    filterValue?: string;
    /** Custom node matcher used when filterValue is not empty. */
    filterMethod?: (value: string, node: TreeNode) => boolean;
    /** Highlight literal filter keyword matches in the built-in label. */
    highlightFilter?: boolean;
    /** Default checked keys for uncontrolled initial state. */
    defaultCheckedKeys?: TreeKey | TreeKey[] | null;
    /** Field mapping for id, label, children, disabled, leaf, append and icon. */
    treeProps?: Partial<TreeProps>;
    /** Theme color for active checkbox/radio. */
    themeColor?: string;
    /** Whether to enable and show the selection control. */
    selectable?: boolean;
    /** Whether to show radio UI in single-select mode. */
    showRadioIcon?: boolean;
    /** Whether to support multiple selection. */
    multiple?: boolean;
    /** Whether clicking a node row changes its selection state. */
    checkOnClickNode?: boolean;
    /** Whether clicking a leaf node row changes its selection state. */
    checkOnClickLeaf?: boolean;
    /** Whether clicking a node row expands or collapses it. */
    expandOnClickNode?: boolean;
    /** Whether expanding a node collapses its expanded siblings. */
    accordion?: boolean;
    /** Whether parent and child checked states are independent. */
    checkStrictly?: boolean;
    /** Single-select mode can only select leaf nodes. Ignored when `multiple` is true. */
    onlyRadioLeaf?: boolean;
    /** Whether all nodes are expanded initially. */
    defaultExpandAll?: boolean;
    /** Default expanded node keys. */
    defaultExpandedKeys?: TreeKey[];
    /** Whether default expanded keys also expand all their ancestors. */
    defaultExpandParent?: boolean;
    /** Expand ancestors of checked nodes initially. */
    expandChecked?: boolean;
    /** Preserve runtime expanded state when tree data is rebuilt. */
    cacheExpandedKeys?: boolean;
    /** Lazy load mode. Nodes can be expanded before children exist. */
    loadMode?: boolean;
    /** Lazy load function. */
    loadApi?: (node: TreeNode) => TreeDataItem[] | Promise<TreeDataItem[]>;
    /** Custom leaf resolver. */
    isLeafFn?: (item: TreeDataItem, node: TreeNode) => boolean;
    /** Load once on first expand even when static children exist. */
    alwaysFirstLoad?: boolean;
    /** Whether disabled nodes can participate in selection state changes. */
    checkedDisabled?: boolean;
    /** Whether checked disabled nodes are included in returned keys/nodes. */
    packDisabledKey?: boolean;
    /** @deprecated Use `packDisabledKey` instead. */
    packDisabledkey?: boolean;
    /** Custom class name added to every node row. */
    nodeClass?: string;
    /** Tree item indent in rpx. */
    indent?: number;
    /** Selection control placement. */
    selectionPlacement?: "left" | "right";
    /** Empty text shown when data is empty. */
    emptyText?: string;
    /** Show label path under the node label. */
    showPath?: boolean;
    /** Separator used by the built-in path display. */
    pathSeparator?: string;
    /** Enable fixed-height virtual rendering for very large visible node lists. */
    virtual?: boolean;
    /** Row height in px when virtual rendering is enabled. */
    virtualItemHeight?: number;
    /** Scroll container height in px when virtual rendering is enabled. */
    virtualHeight?: number;
    /** Extra rows rendered before and after the viewport in virtual mode. */
    virtualOverscan?: number;
}
interface UniTreeViewExposed {
    setCheckedKeys: (keys: TreeKey | TreeKey[], checked?: boolean) => TreeModelValue;
    getCheckedKeys: () => TreeKey[];
    getHalfCheckedKeys: () => TreeKey[];
    getUncheckedKeys: () => TreeKey[];
    getCheckedNodes: () => TreeNode[];
    getHalfCheckedNodes: () => TreeNode[];
    getUncheckedNodes: () => TreeNode[];
    setExpandedKeys: (keys: TreeKey[] | "all", expanded?: boolean) => void;
    getExpandedKeys: () => TreeKey[];
    getUnexpandedKeys: () => TreeKey[];
    getVisibleKeys: () => TreeKey[];
    getMatchedKeys: () => TreeKey[];
    getExpandedNodes: () => TreeNode[];
    getUnexpandedNodes: () => TreeNode[];
    getVisibleNodes: () => TreeNode[];
    getMatchedNodes: () => TreeNode[];
    getNode: (key: TreeKey) => TreeNode | undefined;
    getNodePath: (keyOrNode: TreeKey | TreeNode) => TreeNode[];
    expandAll: () => void;
    collapseAll: () => void;
    loadNode: (node: TreeNode) => Promise<TreeDataItem[]>;
    retryLoad: (keyOrNode: TreeKey | TreeNode) => Promise<TreeDataItem[]>;
    scrollToKey: (key: TreeKey, options?: TreeScrollToOptions) => Promise<boolean>;
}
/**
 * 事件表使用 Vue 3.3+ 的「具名元组」形态，且必须是 type 别名而非 interface：
 * `defineEmits<T>()` 的约束是 `Record<string, any[]>`，interface 没有隐式索引签名，无法满足。
 */
type UniTreeViewEmits = {
    "update:modelValue": [value: TreeModelValue];
    "check-change": [payload: TreeCheckChangePayload];
    "expand-change": [payload: TreeExpandPayload];
    "load": [payload: TreeLoadPayload];
    "load-error": [payload: TreeLoadErrorPayload];
    "node-click": [payload: TreeNodeClickPayload];
    "filter-change": [payload: TreeFilterPayload];
};

declare function getIsPc(): boolean;

interface IPlatform {
  APP: "APP";
  APP_ANDROID: "APP-ANDROID";
  APP_IOS: "APP-IOS";
  APP_HARMONY: "APP-HARMONY";
  WEB: "WEB";
  MP: "MP";
  MP_WEIXIN: "MP-WEIXIN";
  MP_ALIPAY: "MP-ALIPAY";
  MP_BAIDU: "MP-BAIDU";
  MP_TOUTIAO: "MP-TOUTIAO";
  MP_LARK: "MP-LARK";
  MP_QQ: "MP-QQ";
  MP_KUAISHOU: "MP-KUAISHOU";
  MP_JD: "MP-JD";
  MP_360: "MP-360";
  MP_XHS: "MP-XHS";
  MP_HARMONY: "MP-HARMONY";
  QUICKAPP_WEBVIEW: "QUICKAPP-WEBVIEW";
  QUICKAPP_WEBVIEW_UNION: "QUICKAPP-WEBVIEW-UNION";
  QUICKAPP_WEBVIEW_HUAWEI: "QUICKAPP-WEBVIEW-HUAWEI";
  OTHER: "OTHER";
}

declare const Platform: IPlatform;

declare function getPlatform(): IPlatform[keyof IPlatform];

declare const platform: ReturnType<typeof getPlatform>;

/** App */
declare const isApp: boolean;
/** App Android */
declare const isAppAndroid: boolean;
/** App iOS */
declare const isAppIos: boolean;
/** App HarmonyOS Next */
declare const isAppHarmony: boolean;
/** Web */
declare const isWeb: boolean;
/** 小程序 */
declare const isMp: boolean;
/** 微信小程序 */
declare const isMpWeixin: boolean;
/** 支付宝小程序 */
declare const isMpAlipay: boolean;
/** 百度小程序 */
declare const isMpBaidu: boolean;
/** 头条小程序 */
declare const isMpToutiao: boolean;
/** 飞书小程序 */
declare const isMpLark: boolean;
/** QQ小程序 */
declare const isMpQq: boolean;
/** 快手小程序 */
declare const isMpKuaishou: boolean;
/** 京东小程序 */
declare const isMpJd: boolean;
/** 360小程序 */
declare const isMp360: boolean;
/** 小红书小程序 */
declare const isMpXhs: boolean;
/** 鸿蒙元服务 */
declare const isMpHarmony: boolean;
/** 快应用 */
declare const isQuickappWebview: boolean;
/** 快应用联盟 */
declare const isQuickappWebviewUnion: boolean;
/** 快应用华为 */
declare const isQuickappWebviewHuawei: boolean;
/** 其他平台 */
declare const isOtherPlatform: boolean;

declare function isEmpty(value: unknown): boolean;

declare function defaultTo(value: any, ...defaultValues: any[]): any;

declare function sleep(timeout: number): Promise<void>;

declare function upperFirst(value: string): string;

declare function lowerFirst(value: string): string;

type EventType = string | symbol;

type Handler<T = unknown> = (event: T) => void;

type WildcardHandler<T = Record<string, unknown>> = (
  type: keyof T,
  event: T[keyof T]
) => void;

type EventHandlerList<T = unknown> = Array<Handler<T>>;

type WildCardEventHandlerList<T = Record<string, unknown>> = Array<
  WildcardHandler<T>
>;

type EventHandlerMap<Events extends Record<EventType, unknown>> = Map<
  keyof Events | "*",
  EventHandlerList<Events[keyof Events]> | WildCardEventHandlerList<Events>
>;

interface Emitter<Events extends Record<EventType, unknown>> {
  events: EventHandlerMap<Events>;

  on: (<Key extends keyof Events>(
    type: Key,
    handler: Handler<Events[Key]>
  ) => void) & ((type: "*", handler: WildcardHandler<Events>) => void);

  off: (<Key extends keyof Events>(
    type: Key,
    handler?: Handler<Events[Key]>
  ) => void) & ((type: "*", handler?: WildcardHandler<Events>) => void);

  emit: (<Key extends keyof Events>(type: Key, event: Events[Key]) => void) & (<Key extends keyof Events>(
    type: undefined extends Events[Key] ? Key : never
  ) => void);
}

declare function mitt<Events extends Record<EventType, unknown>>(
  events?: EventHandlerMap<Events>
): Emitter<Events>;

declare function getDeviceInfo(): UniApp.GetDeviceInfoResult | UniApp.GetSystemInfoResult;

declare function getWindowInfo(): UniApp.GetWindowInfoResult | UniApp.GetSystemInfoResult;

declare function getAppBaseInfo(): UniApp.GetAppBaseInfoResult | UniApp.GetSystemInfoResult;

declare function getVersion(): string;

declare function compareVersion(v1: string, v2: string): 0 | 1 | -1;

declare function querySelect(
  component: ComponentPublicInstance,
  selector: string,
  fields: UniApp.NodeField
): Promise<UniApp.NodeInfo>;

export { Platform, compareVersion, defaultTo, getAppBaseInfo, getDeviceInfo, getIsPc, getPlatform, getVersion, getWindowInfo, isApp, isAppAndroid, isAppHarmony, isAppIos, isEmpty, isMp, isMp360, isMpAlipay, isMpBaidu, isMpHarmony, isMpJd, isMpKuaishou, isMpLark, isMpQq, isMpToutiao, isMpWeixin, isMpXhs, isOtherPlatform, isQuickappWebview, isQuickappWebviewHuawei, isQuickappWebviewUnion, isWeb, lowerFirst, mitt, platform, querySelect, sleep, upperFirst };
export type { CheckStatus, Emitter, EventHandlerList, EventHandlerMap, EventType, Handler, IPlatform, TreeCheckChangePayload, TreeDataItem, TreeEmptySlotProps, TreeExpandPayload, TreeFilterPayload, TreeKey, TreeLoadErrorPayload, TreeLoadPayload, TreeModelValue, TreeNode, TreeNodeClickPayload, TreeProps, TreeScrollToOptions, TreeSlotProps, UniTreeViewEmits, UniTreeViewExposed, UniTreeViewProps, UniTreeViewSlots, WildCardEventHandlerList, WildcardHandler };