// copy from element-plus

import type { CSSProperties, Plugin } from 'vue'

type OptionalKeys<T extends Record<string, unknown>> = {
  [K in keyof T]: T extends Record<K, T[K]> ? never : K
}[keyof T]

type RequiredKeys<T extends Record<string, unknown>> = Exclude<keyof T, OptionalKeys<T>>

type MonoArgEmitter<T, Keys extends keyof T> = <K extends Keys>(evt: K, arg?: T[K]) => void

type BiArgEmitter<T, Keys extends keyof T> = <K extends Keys>(evt: K, arg: T[K]) => void

export type EventEmitter<T extends Record<string, unknown>> = MonoArgEmitter<T, OptionalKeys<T>> & BiArgEmitter<T, RequiredKeys<T>>

/**
 * 任意类型的异步函数
 */
export type AnyPromiseFunction = (...arg: any[]) => PromiseLike<any>

/**
 * 任意类型的普通函数
 */
export type AnyNormalFunction = (...arg: any[]) => any

/**
 * 任意类型的函数
 */
export type AnyFunction = AnyNormalFunction | AnyPromiseFunction

export type PartialReturnType<T extends (...args: unknown[]) => unknown> = Partial<ReturnType<T>>

export type SFCWithInstall<T> = T & Plugin

export type Nullable<T> = T | null

/**
 * 字符串类型对象
 */
export type Recordable<T = any> = Record<string, T>

export type RefElement = Nullable<HTMLElement>

export type CustomizedHTMLElement<T> = HTMLElement & T

export interface Indexable<T> {
  [key: string]: T
}

export type Hash<T> = Indexable<T>

export type TimeoutHandle = ReturnType<typeof globalThis.setTimeout>

export type ComponentSize = 'large' | 'medium' | 'small' | 'mini'

export type StyleValue = string | CSSProperties | Array<StyleValue>

export type Mutable<T> = { -readonly [P in keyof T]: T[P] }

type Merge<O extends object, T extends object> = {
  [K in keyof O | keyof T]: K extends keyof T ? T[K] : K extends keyof O ? O[K] : never;
}

/**
 * T = [
 *  { name: string; age: number; },
 *  { sex: 'male' | 'female'; age: string }
 * ]
 * =>
 * MergeAll<T> = {
 *  name: string;
 *  sex: 'male' | 'female';
 *  age: string
 * }
 */
export type MergeAll<T extends object[], R extends object = object> = T extends [
  infer F extends object,
  ...infer Rest extends object[],
]
  ? MergeAll<Rest, Merge<R, F>>
  : R