import { NuBuilder } from "./dom/NuBuilder.ts";
import type { CfHTMLElementInterface } from "./dom/config.ts";
import { Store } from "./stores/mod.ts";
export interface UpdateEvent<ST> {
    type: "update";
    value: ST extends Store<infer T> ? T : never;
}
export type AppendEvent<ST> = ST extends Store<infer T> ? (T extends Array<infer L> ? {
    type: "append";
    value: L;
    idx: number;
} : {
    type: "append";
    value: T;
}) : never;
export type ChangeEvent<ST> = ST extends Store<infer T> ? (T extends Record<string, infer M> ? {
    type: "change";
    value: M;
    key: string;
} : (T extends Array<infer L> ? {
    type: "change";
    value: L;
    idx: number;
} : {
    type: "change";
    value: T;
})) : never;
export type DeletionEvent<ST> = ST extends Store<infer T> ? T extends Record<string, infer M> ? {
    type: "deletion";
    value: M;
    key: string;
} : T extends Array<infer L> ? {
    type: "deletion";
    value: L;
    idx: number;
} : {
    type: "deletion";
    value: T;
} : never;
export interface ClearEvent {
    type: "clear";
}
export type StoreEvent<ST> = ChangeEvent<ST> | DeletionEvent<ST> | AppendEvent<ST> | UpdateEvent<ST> | ClearEvent;
export type EventType = StoreEvent<any>["type"];
export type SubscriberTypeMap<ST> = {
    [K in EventType]: Extract<StoreEvent<ST>, {
        type: K;
    }>;
};
/** A signature for a subscriber function. */
export type AnySubscriber<ST> = (event: StoreEvent<ST>) => void;
/** A signature for a subscriber of a specific event. */
export type EventSubscriber<K extends EventType, ST> = (event: SubscriberTypeMap<ST>[K]) => void;
/** The function signature for a function returned by `template()`. */
export type Template = (e: Record<string, any>) => string;
export type UnwrapStore<D> = {
    [K in keyof D]: D[K] extends Store<infer V> ? V : never;
};
export type StoreEventFromObject<D> = {
    [K in keyof D]: D[K] extends Store<any> ? StoreEvent<D[K]> : never;
}[keyof D];
type NuBuilderInstance<Elem extends HTMLElement, Deps extends Record<string, Store<any>>> = NuBuilder<Elem, Deps, string>;
export type RenderBuilder<Elem extends HTMLElement, Deps> = Omit<NuBuilderInstance<Elem, Deps extends Record<string, Store<any>> ? Deps : never>, "children" | "done" | "ref" | "on" | "gimme" | "deps" | "render">;
/**
 * Function signature for rendering reactive content.
 *
 * @template Elem The type of HTML element being rendered
 * @template Deps The type of the dependencies object
 *
 * @param props The unwrapped values from the store dependencies
 * @param opts Additional options and utilities for rendering:
 *   - event: The event that triggered this render (if applicable)
 *   - b: A builder instance for fluent element modification
 *   - elt: Reference to the element being rendered
 *   - first: Boolean flag indicating whether this is the first render (true) or a re-render (false)
 *
 * @returns A string, builder instance, or void
 *
 * @example
 * ```js
 * // Using the first parameter to conditionally render initial state
 * const [element] = cf.nu("div")
 *   .deps({ count: counterStore })
 *   .render(({ count }, { b, first }) => {
 *     // Do one-time setup on first render
 *     if (first) {
 *       b.attr("data-initialized", "true");
 *       b.style("transition", "all 0.3s ease");
 *     }
 *
 *     return b.content(`Count is: ${count}`);
 *   })
 *   .done();
 * ```
 */
export type RenderFunction<Elem extends HTMLElement, Deps extends Record<string, Store<any>>> = (props: UnwrapStore<Deps>, opts: {
    event?: StoreEventFromObject<Deps> & {
        triggeredBy: string;
    };
    b: RenderBuilder<Elem, Deps>;
    elt: Elem;
    first: boolean;
}) => string | RenderBuilder<Elem, Deps> | void;
export type StringStyleProps = keyof {
    [K in keyof CSSStyleDeclaration as CSSStyleDeclaration[K] extends string ? K : never]: true;
};
export type DOMEventHandlers = {
    [K in keyof HTMLElementEventMap]?: (event: HTMLElementEventMap[K]) => void;
};
/**
 * Properties for the HTML element to be created.
 */
export interface ElementProperties<T extends HTMLElement, D extends Record<string, Store<any>>> {
    /**
     * String that will be set as the inner HTML of the created element. By default,
     * this is escaped using cf.escape() - however, if you supply `raw: true` in
     * the args object passed as nu's second argument, escaping is disabled.
     */
    contents?: string;
    /**
     * Rendering function to use to update the element on redraws.
     * As of 4.0.0-rc15, render functions receive a 'first' parameter in the opts
     * object that indicates if this is the first render (true) or a re-render (false).
     */
    render?: RenderFunction<T, D>;
    /**
     * Classes for the newly created element. Will be combined with whatever is
     * passed into nu().
     */
    classes?: Record<string, boolean>;
    /**
     * Whether or not to escape the `contents` string. If `raw` is true, the
     * string is not escaped.
     */
    raw?: boolean;
    /** Miscellaneous properties to set on the created element,
     * for example, `type: "button"` or `checked: true`
     */
    misc?: Record<string, unknown>;
    /**
     * Contains styles that will be applied to the new element. Property names
     * must be the same as those in `CSSStyleDeclaration`.
     */
    style?: Partial<Record<StringStyleProps, string | number>>;
    /**
     * An object containing event handlers that will be applied using addEventListener.
     * For example: `{'click': (e) => console.log(e)}`
     */
    on?: DOMEventHandlers;
    /** Attributes that will be set on the element using `Element.setAttribute`. */
    attrs?: Record<string, string | number | boolean>;
    /**
     * A list of elements to query from the element. Will be returned as
     * subsequent members of the returned Array after the element itself.
     * Returns null when a selector isn't found to preserve order of returned
     * elements.
     */
    gimme?: string[];
    /**
     * A Record<string, Store> of the element's dependencies. The element's
     * render function will be called every time any of the deps change.
     */
    deps?: D;
    /**
     * Children of the element to mount. They will be mounted into `cf-slot`s
     * corresponding to the Record's keys and preserved between re-renders of
     * the parent.
     *
     * As of 4.0.0-rc15, you can provide an array of elements for a slot, and they
     * will all be mounted to that slot in order.
     *
     * Exercise caution when passing nu().done() directly - all children
     * returned will be mounted to the element.
     */
    children?: Record<string, CfHTMLElementInterface | CfHTMLElementInterface[]>;
    /**
     * A user-supplied ID to track the element by its reference.
     */
    track?: string;
}
/**
 * An interface to store data parsed from an element descriptor string passed to `nu`.
 * @internal
 */
export interface TagStringParseResult {
    /** The tagName parsed from the info string. */
    tag?: string | undefined;
    /** The id parsed from the info string. */
    id?: string | undefined;
    /** An array of classes parsed from the info string. */
    classes?: string[] | undefined;
}
export type ElementPosition = {
    before: CfHTMLElementInterface;
} | {
    after: CfHTMLElementInterface;
} | {
    into: CfHTMLElementInterface;
    at?: "start";
};
type TagName = keyof HTMLElementTagNameMap;
export type EltInfoToTag<T extends string> = T extends `${infer Tag extends TagName}#${string}.${string}` ? Tag : T extends `${infer Tag extends TagName}#${string}` ? Tag : T extends `${infer Tag extends TagName}.${string}` ? Tag : T extends `${infer Tag extends TagName}` ? Tag : 'div';
export type InferElementType<T extends string> = T extends keyof HTMLElementTagNameMap ? HTMLElementTagNameMap[EltInfoToTag<T>] : HTMLElement;
export {};