import { cloneDeep, intersectionWith, isEqual, mergeWith, unionWith } from 'lodash-es';
import type { App, Component } from 'vue';
import { unref } from 'vue';

import { isArray, isFunction, isObject } from './inference';

type Recordable<T> = Record<string, T>;
type LabelValueOptions = {
  label: string;
  value: any;
  [key: string]: string | number | boolean;
}[];

const noop = () => {};

function openWindow(
  url: string,
  opt?: {
    target?: string;
    noopener?: boolean;
    noreferrer?: boolean;
  },
) {
  const { target = '_blank', noopener = true, noreferrer = true } = opt || {};
  const feature: string[] = [];

  noopener && feature.push('noopener=yes');
  noreferrer && feature.push('noreferrer=yes');

  window.open(url, target, feature.join(','));
}

/**
 * @description:  Set ui mount node
 */
function getPopupContainer(node?: HTMLElement): HTMLElement {
  return (node?.parentNode as HTMLElement) ?? document.body;
}

/**
 * Add the object as a parameter to the URL
 * @param baseUrl url
 * @param obj
 * @returns {string}
 * eg:
 *  let obj = {a: '3', b: '4'}
 *  setObjToUrlParams('www.baidu.com', obj)
 *  ==>www.baidu.com?a=3&b=4
 */
function setObjToUrlParams(baseUrl: string, obj: any): string {
  let parameters = '';
  for (const key in obj) {
    parameters += key + '=' + encodeURIComponent(obj[key]) + '&';
  }
  parameters = parameters.replace(/&$/, '');
  return /\?$/.test(baseUrl) ? baseUrl + parameters : baseUrl.replace(/\/?$/, '?') + parameters;
}

/**
 * Recursively merge two objects.
 * 递归合并两个对象。
 *
 * @param source The source object to merge from. 要合并的源对象。
 * @param target The target object to merge into. 目标对象，合并后结果存放于此。
 * @param mergeArrays How to merge arrays. Default is "replace".
 *        如何合并数组。默认为replace。
 *        - "union": Union the arrays. 对数组执行并集操作。
 *        - "intersection": Intersect the arrays. 对数组执行交集操作。
 *        - "concat": Concatenate the arrays. 连接数组。
 *        - "replace": Replace the source array with the target array. 用目标数组替换源数组。
 * @returns The merged object. 合并后的对象。
 */
function deepMerge<T extends object | null | undefined, U extends object | null | undefined>(
  source: U,
  target: T,
  mergeArrays: 'union' | 'intersection' | 'concat' | 'replace' = 'replace',
): T & U {
  if (!target) {
    return source as T & U;
  }
  if (!source) {
    return target as T & U;
  }
  return mergeWith({}, cloneDeep(source), target, (sourceValue, targetValue) => {
    if (isArray(targetValue) && isArray(sourceValue)) {
      switch (mergeArrays) {
        case 'union':
          return unionWith(sourceValue, targetValue, isEqual);
        case 'intersection':
          return intersectionWith(sourceValue, targetValue, isEqual);
        case 'concat':
          return sourceValue.concat(targetValue);
        case 'replace':
          return targetValue;
        default:
          throw new Error(`Unknown merge array strategy: ${mergeArrays as string}`);
      }
    }
    if (isObject(targetValue) && isObject(sourceValue)) {
      return deepMerge(cloneDeep(sourceValue), targetValue, mergeArrays);
    }
    return undefined;
  });
}

// dynamic use hook props
export function getDynamicProps<T extends Record<string, unknown>, U>(props: T): Partial<U> {
  const ret: Recordable<any> = {};

  Object.keys(props).map((key) => {
    ret[key] = unref((props as Recordable<any>)[key]);
  });

  return ret as Partial<U>;
}

// https://github.com/vant-ui/vant/issues/8302
interface EventShim {
  new (...args: any[]): {
    $props: {
      onClick?: (...args: any[]) => void;
    };
  };
}

type WithInstall<T> = T & {
  install(app: App): void;
} & EventShim;

type CustomComponent = Component & { displayName?: string };

const withInstall = <T extends CustomComponent>(component: T, alias?: string) => {
  (component as Record<string, unknown>).install = (app: App) => {
    const compName = component.name || component.displayName;
    if (!compName) return;
    app.component(compName, component);
    if (alias) {
      app.config.globalProperties[alias] = component;
    }
  };
  return component as WithInstall<T>;
};

// 替换{}内的变量
function replaceVariables(str: string, variables: Recordable<any>): string {
  const pattern = /\{([^}]+)\}/g; // 匹配 {} 中的内容
  return str.replace(pattern, (match, variable) => {
    if (variable in variables) {
      return variables[variable];
    }
    return match;
  });
}

// 转换接口options为label，value形式
const resolveOptions = <T = any>(
  options: T[] = [],
  config?: {
    labelField?: string;
    valueField?: string;
    deleteItem?: boolean;
    disabled?: (T) => boolean;
  },
): LabelValueOptions => {
  const { labelField = 'value', valueField = 'key', deleteItem = true, disabled } = config ?? {};
  return options.map((option) => ({
    ...(deleteItem ? {} : option),
    label: option[labelField],
    value: option[valueField],
    disabled: isFunction(disabled) ? disabled(option) : false,
  }));
};

/**
 * 休眠（setTimeout的promise版）
 * @param ms 要休眠的时间，单位：毫秒
 * @param fn callback，可空
 * @return Promise
 */
function sleep(ms: number, fn?: () => void) {
  return new Promise<void>((resolve) =>
    setTimeout(() => {
      fn && fn();
      resolve();
    }, ms),
  );
}

/**
 * 数字转大写
 * @param value
 * @returns {*}
 */
function numToUpper(value) {
  if (value != '') {
    const unit = ['仟', '佰', '拾', '', '仟', '佰', '拾', '', '角', '分'];
    const toDx = (n) => {
      switch (n) {
        case '0':
          return '零';
        case '1':
          return '壹';
        case '2':
          return '贰';
        case '3':
          return '叁';
        case '4':
          return '肆';
        case '5':
          return '伍';
        case '6':
          return '陆';
        case '7':
          return '柒';
        case '8':
          return '捌';
        case '9':
          return '玖';
      }
    };
    const lth = value.toString().length;
    value *= 100;
    value += '';
    const length = value.length;
    if (lth <= 8) {
      let result = '';
      for (let i = 0; i < length; i++) {
        if (i == 2) {
          result = '元' + result;
        } else if (i == 6) {
          result = '万' + result;
        }
        if (value.charAt(length - i - 1) == 0) {
          if (i != 0 && i != 1) {
            if (result.charAt(0) != '零' && result.charAt(0) != '元' && result.charAt(0) != '万') {
              result = '零' + result;
            }
          }
          continue;
        }
        result = toDx(value.charAt(length - i - 1)) + unit[unit.length - i - 1] + result;
      }
      result += result.charAt(result.length - 1) == '元' ? '整' : '';
      return result;
    } else {
      return null;
    }
  }
  return null;
}

export {
  deepMerge,
  type EventShim,
  getPopupContainer,
  noop,
  numToUpper,
  openWindow,
  replaceVariables,
  resolveOptions,
  setObjToUrlParams,
  sleep,
  withInstall,
};