import { setTimeout } from 'node:timers/promises';
import { ObjectToLower, ObjectToSnake } from './Types';

const isPlainObject = (value: any) => {
  return (
    (value !== null &&
      typeof value === 'object' &&
      typeof value.constructor === 'function' &&
      // rome-ignore lint/suspicious/noPrototypeBuiltins: js tricks
      (value.constructor.prototype.hasOwnProperty('isPrototypeOf') || Object.getPrototypeOf(value.constructor.prototype) === null)) ||
    (value && Object.getPrototypeOf(value) === null)
  );
};

const isObject = (o: any) => {
  return !!o && typeof o === 'object' && !Array.isArray(o);
};

export const Options = <T = any>(defaults: any, ...options: any[]): T => {
  if (!options.length) {
    return defaults;
  }

  const source = options.shift();

  if (isObject(defaults) && isPlainObject(source)) {
    Object.entries(source).forEach(([key, value]) => {
      if (typeof value === 'undefined') {
        return;
      }

      if (isPlainObject(value)) {
        if (!(key in defaults)) {
          Object.assign(defaults, { [key]: {} });
        }

        Options(defaults[key], value);
      } else {
        Object.assign(defaults, { [key]: value });
      }
    });
  }

  return Options(defaults, ...options);
};
/**
 * Convert a camelCase object to snake_case.
 * @param target The object to convert.
 * @returns The converted object.
 */
export function toSnakeCase<Obj extends Record<string, any>>(target: Obj): ObjectToSnake<Obj> {
  const result = {};
  for (const [key, value] of Object.entries(target)) {
    switch (typeof value) {
      case 'string':
      case 'bigint':
      case 'boolean':
      case 'function':
      case 'symbol':
      case 'undefined':
        result[ReplaceRegex.camel(key)] = value;
        break;
      case 'object':
        if (Array.isArray(value)) {
          result[ReplaceRegex.camel(key)] = value.map((prop) => toSnakeCase(prop));
          break;
        }
        if (!Number.isNaN(value)) {
          result[ReplaceRegex.camel(key)] = null;
          break;
        }
        result[ReplaceRegex.camel(key)] = toSnakeCase({ ...value });
        break;
    }
  }
  return result as ObjectToSnake<Obj>;
}

/**
 * Convert a snake_case object to camelCase.
 * @param target The object to convert.
 * @returns The converted object.
 */
export function toCamelCase<Obj extends Record<string, any>>(target: Obj): ObjectToLower<Obj> {
  const result = {};
  for (const [key, value] of Object.entries(target)) {
    switch (typeof value) {
      case 'string':
      case 'bigint':
      case 'boolean':
      case 'function':
      case 'symbol':
      case 'undefined':
        result[ReplaceRegex.snake(key)] = value;
        break;
      case 'object':
        if (Array.isArray(value)) {
          result[ReplaceRegex.snake(key)] = value.map((prop) => toCamelCase(prop));
          break;
        }
        if (!Number.isNaN(value)) {
          result[ReplaceRegex.snake(key)] = null;
          break;
        }
        result[ReplaceRegex.snake(key)] = toCamelCase({ ...value });
        break;
    }
  }
  return result as ObjectToLower<Obj>;
}

export const ReplaceRegex = {
  snake: (s: string) => {
    return s.replace(/(_\S)/gi, (a) => a[1].toUpperCase());
  },
  camel: (s: string) => {
    return s.replace(/[A-Z]/g, (a) => `_${a.toLowerCase()}`);
  }
};

// https://github.com/discordeno/discordeno/blob/main/packages/utils/src/colors.ts

export interface Code {
  open: string;
  close: string;
  regexp: RegExp;
}

/** RGB 8-bits per channel. Each in range `0->255` or `0x00->0xff` */
export interface Rgb {
  r: number;
  g: number;
  b: number;
}

let enabled = true;

/**
 * Set changing text color to enabled or disabled
 * @param value
 */
export function setColorEnabled(value: boolean) {
  enabled = value;
}

/** Get whether text color change is enabled or disabled. */
export function getColorEnabled(): boolean {
  return enabled;
}

/**
 * Builds color code
 * @param open
 * @param close
 */
function code(open: number[], close: number): Code {
  return {
    open: `\x1b[${open.join(';')}m`,
    close: `\x1b[${close}m`,
    regexp: new RegExp(`\\x1b\\[${close}m`, 'g')
  };
}

/**
 * Applies color and background based on color code and its associated text
 * @param str text to apply color settings to
 * @param code color code to apply
 */
function run(str: string, code: Code): string {
  return enabled ? `${code.open}${str.replace(code.regexp, code.open)}${code.close}` : str;
}

/**
 * Reset the text modified
 * @param str text to reset
 */
export function reset(str: string): string {
  return run(str, code([0], 0));
}

/**
 * Make the text bold.
 * @param str text to make bold
 */
export function bold(str: string): string {
  return run(str, code([1], 22));
}

/**
 * The text emits only a small amount of light.
 * @param str text to dim
 */
export function dim(str: string): string {
  return run(str, code([2], 22));
}

/**
 * Make the text italic.
 * @param str text to make italic
 */
export function italic(str: string): string {
  return run(str, code([3], 23));
}

/**
 * Make the text underline.
 * @param str text to underline
 */
export function underline(str: string): string {
  return run(str, code([4], 24));
}

/**
 * Invert background color and text color.
 * @param str text to invert its color
 */
export function inverse(str: string): string {
  return run(str, code([7], 27));
}

/**
 * Make the text hidden.
 * @param str text to hide
 */
export function hidden(str: string): string {
  return run(str, code([8], 28));
}

/**
 * Put horizontal line through the center of the text.
 * @param str text to strike through
 */
export function strikethrough(str: string): string {
  return run(str, code([9], 29));
}

/**
 * Set text color to black.
 * @param str text to make black
 */
export function black(str: string): string {
  return run(str, code([30], 39));
}

/**
 * Set text color to red.
 * @param str text to make red
 */
export function red(str: string): string {
  return run(str, code([31], 39));
}

/**
 * Set text color to green.
 * @param str text to make green
 */
export function green(str: string): string {
  return run(str, code([32], 39));
}

/**
 * Set text color to yellow.
 * @param str text to make yellow
 */
export function yellow(str: string): string {
  return run(str, code([33], 39));
}

/**
 * Set text color to blue.
 * @param str text to make blue
 */
export function blue(str: string): string {
  return run(str, code([34], 39));
}

/**
 * Set text color to magenta.
 * @param str text to make magenta
 */
export function magenta(str: string): string {
  return run(str, code([35], 39));
}

/**
 * Set text color to cyan.
 * @param str text to make cyan
 */
export function cyan(str: string): string {
  return run(str, code([36], 39));
}

/**
 * Set text color to white.
 * @param str text to make white
 */
export function white(str: string): string {
  return run(str, code([37], 39));
}

/**
 * Set text color to gray.
 * @param str text to make gray
 */
export function gray(str: string): string {
  return brightBlack(str);
}

/**
 * Set text color to bright black.
 * @param str text to make bright-black
 */
export function brightBlack(str: string): string {
  return run(str, code([90], 39));
}

/**
 * Set text color to bright red.
 * @param str text to make bright-red
 */
export function brightRed(str: string): string {
  return run(str, code([91], 39));
}

/**
 * Set text color to bright green.
 * @param str text to make bright-green
 */
export function brightGreen(str: string): string {
  return run(str, code([92], 39));
}

/**
 * Set text color to bright yellow.
 * @param str text to make bright-yellow
 */
export function brightYellow(str: string): string {
  return run(str, code([93], 39));
}

/**
 * Set text color to bright blue.
 * @param str text to make bright-blue
 */
export function brightBlue(str: string): string {
  return run(str, code([94], 39));
}

/**
 * Set text color to bright magenta.
 * @param str text to make bright-magenta
 */
export function brightMagenta(str: string): string {
  return run(str, code([95], 39));
}

/**
 * Set text color to bright cyan.
 * @param str text to make bright-cyan
 */
export function brightCyan(str: string): string {
  return run(str, code([96], 39));
}

/**
 * Set text color to bright white.
 * @param str text to make bright-white
 */
export function brightWhite(str: string): string {
  return run(str, code([97], 39));
}

/**
 * Set background color to black.
 * @param str text to make its background black
 */
export function bgBlack(str: string): string {
  return run(str, code([40], 49));
}

/**
 * Set background color to red.
 * @param str text to make its background red
 */
export function bgRed(str: string): string {
  return run(str, code([41], 49));
}

/**
 * Set background color to green.
 * @param str text to make its background green
 */
export function bgGreen(str: string): string {
  return run(str, code([42], 49));
}

/**
 * Set background color to yellow.
 * @param str text to make its background yellow
 */
export function bgYellow(str: string): string {
  return run(str, code([43], 49));
}

/**
 * Set background color to blue.
 * @param str text to make its background blue
 */
export function bgBlue(str: string): string {
  return run(str, code([44], 49));
}

/**
 *  Set background color to magenta.
 * @param str text to make its background magenta
 */
export function bgMagenta(str: string): string {
  return run(str, code([45], 49));
}

/**
 * Set background color to cyan.
 * @param str text to make its background cyan
 */
export function bgCyan(str: string): string {
  return run(str, code([46], 49));
}

/**
 * Set background color to white.
 * @param str text to make its background white
 */
export function bgWhite(str: string): string {
  return run(str, code([47], 49));
}

/**
 * Set background color to bright black.
 * @param str text to make its background bright-black
 */
export function bgBrightBlack(str: string): string {
  return run(str, code([100], 49));
}

/**
 * Set background color to bright red.
 * @param str text to make its background bright-red
 */
export function bgBrightRed(str: string): string {
  return run(str, code([101], 49));
}

/**
 * Set background color to bright green.
 * @param str text to make its background bright-green
 */
export function bgBrightGreen(str: string): string {
  return run(str, code([102], 49));
}

/**
 * Set background color to bright yellow.
 * @param str text to make its background bright-yellow
 */
export function bgBrightYellow(str: string): string {
  return run(str, code([103], 49));
}

/**
 * Set background color to bright blue.
 * @param str text to make its background bright-blue
 */
export function bgBrightBlue(str: string): string {
  return run(str, code([104], 49));
}

/**
 * Set background color to bright magenta.
 * @param str text to make its background bright-magenta
 */
export function bgBrightMagenta(str: string): string {
  return run(str, code([105], 49));
}

/**
 * Set background color to bright cyan.
 * @param str text to make its background bright-cyan
 */
export function bgBrightCyan(str: string): string {
  return run(str, code([106], 49));
}

/**
 * Set background color to bright white.
 * @param str text to make its background bright-white
 */
export function bgBrightWhite(str: string): string {
  return run(str, code([107], 49));
}

/* Special Color Sequences */

/**
 * Clam and truncate color codes
 * @param n
 * @param max number to truncate to
 * @param min number to truncate from
 */
function clampAndTruncate(n: number, max = 255, min = 0): number {
  return Math.trunc(Math.max(Math.min(n, max), min));
}

/**
 * Set text color using paletted 8bit colors.
 * https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit
 * @param str text color to apply paletted 8bit colors to
 * @param color code
 */
export function rgb8(str: string, color: number): string {
  return run(str, code([38, 5, clampAndTruncate(color)], 39));
}

/**
 * Set background color using paletted 8bit colors.
 * https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit
 * @param str text color to apply paletted 8bit background colors to
 * @param color code
 */
export function bgRgb8(str: string, color: number): string {
  return run(str, code([48, 5, clampAndTruncate(color)], 49));
}

/**
 * Set text color using 24bit rgb.
 * `color` can be a number in range `0x000000` to `0xffffff` or
 * an `Rgb`.
 *
 * To produce the color magenta:
 *
 * ```ts
 *      import { rgb24 } from "./colors.ts";
 *      rgb24("foo", 0xff00ff);
 *      rgb24("foo", {r: 255, g: 0, b: 255});
 * ```
 * @param str text color to apply 24bit rgb to
 * @param color code
 */
export function rgb24(str: string, color: number | Rgb): string {
  if (typeof color === 'number') {
    return run(str, code([38, 2, (color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff], 39));
  }
  return run(str, code([38, 2, clampAndTruncate(color.r), clampAndTruncate(color.g), clampAndTruncate(color.b)], 39));
}

/**
 * Set background color using 24bit rgb.
 * `color` can be a number in range `0x000000` to `0xffffff` or
 * an `Rgb`.
 *
 * To produce the color magenta:
 *
 * ```ts
 *      import { bgRgb24 } from "./colors.ts";
 *      bgRgb24("foo", 0xff00ff);
 *      bgRgb24("foo", {r: 255, g: 0, b: 255});
 * ```
 * @param str text color to apply 24bit rgb to
 * @param color code
 */
export function bgRgb24(str: string, color: number | Rgb): string {
  if (typeof color === 'number') {
    return run(str, code([48, 2, (color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff], 49));
  }
  return run(str, code([48, 2, clampAndTruncate(color.r), clampAndTruncate(color.g), clampAndTruncate(color.b)], 49));
}

// https://github.com/chalk/ansi-regex/blob/02fa893d619d3da85411acc8fd4e2eea0e95a9d9/index.js
const ANSI_PATTERN = new RegExp(
  [
    '[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]+)*|[a-zA-Z\\d]+(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)',
    '(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-nq-uy=><~]))'
  ].join('|'),
  'g'
);

/**
 * Remove ANSI escape codes from the string.
 * @param string to remove ANSI escape codes from
 */
export function stripColor(string: string): string {
  return string.replace(ANSI_PATTERN, '');
}

export function delay<T>(time: number, result?: T) {
  return setTimeout(time, result);
}