import { MoneyFormat } from "#enums/money-format";
import { Moves } from "#enums/moves";
import i18next from "i18next";
import { pokerogueApi } from "#app/plugins/api/pokerogue-api";

export type nil = null | undefined;

export const MissingTextureKey = "__MISSING";

export function toReadableString(str: string): string {
  return str.replace(/\_/g, " ").split(" ").map(s => `${s.slice(0, 1)}${s.slice(1).toLowerCase()}`).join(" ");
}

export function randomString(length: integer, seeded: boolean = false) {
  const characters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
  let result = "";

  for (let i = 0; i < length; i++) {
    const randomIndex = seeded ? randSeedInt(characters.length) : Math.floor(Math.random() * characters.length);
    result += characters[randomIndex];
  }

  return result;
}

export function shiftCharCodes(str: string, shiftCount: integer) {
  if (!shiftCount) {
    shiftCount = 0;
  }

  let newStr = "";

  for (let i = 0; i < str.length; i++) {
    const charCode = str.charCodeAt(i);
    const newCharCode = charCode + shiftCount;
    newStr += String.fromCharCode(newCharCode);
  }

  return newStr;
}

export function randGauss(stdev: number, mean: number = 0): number {
  if (!stdev) {
    return 0;
  }
  const u = 1 - Math.random();
  const v = Math.random();
  const z = Math.sqrt(-2.0 * Math.log(u)) * Math.cos(2.0 * Math.PI * v);
  return z * stdev + mean;
}

export function randSeedGauss(stdev: number, mean: number = 0): number {
  if (!stdev) {
    return 0;
  }
  const u = 1 - Phaser.Math.RND.realInRange(0, 1);
  const v = Phaser.Math.RND.realInRange(0, 1);
  const z = Math.sqrt(-2.0 * Math.log(u)) * Math.cos(2.0 * Math.PI * v);
  return z * stdev + mean;
}

export function padInt(value: integer, length: integer, padWith?: string): string {
  if (!padWith) {
    padWith = "0";
  }
  let valueStr = value.toString();
  while (valueStr.length < length) {
    valueStr = `${padWith}${valueStr}`;
  }
  return valueStr;
}

/**
* Returns a random integer between min and min + range
* @param range The amount of possible numbers
* @param min The starting number
*/
export function randInt(range: integer, min: integer = 0): integer {
  if (range === 1) {
    return min;
  }
  return Math.floor(Math.random() * range) + min;
}

/**
 * Generates a random number using the global seed, or the current battle's seed if called via `Battle.randSeedInt`
 * @param range How large of a range of random numbers to choose from. If {@linkcode range} <= 1, returns {@linkcode min}
 * @param min The minimum integer to pick, default `0`
 * @returns A random integer between {@linkcode min} and ({@linkcode min} + {@linkcode range} - 1)
 */
export function randSeedInt(range: integer, min: integer = 0): integer {
  if (range <= 1) {
    return min;
  }
  return Phaser.Math.RND.integerInRange(min, (range - 1) + min);
}

/**
* Returns a random integer between min and max (non-inclusive)
* @param min The lowest number
* @param max The highest number
*/
export function randIntRange(min: integer, max: integer): integer {
  return randInt(max - min, min);
}

export function randItem<T>(items: T[]): T {
  return items.length === 1
    ? items[0]
    : items[randInt(items.length)];
}

export function randSeedItem<T>(items: T[]): T {
  return items.length === 1
    ? items[0]
    : Phaser.Math.RND.pick(items);
}

export function randSeedWeightedItem<T>(items: T[]): T {
  return items.length === 1
    ? items[0]
    : Phaser.Math.RND.weightedPick(items);
}

/**
 * Shuffle a list using the seeded rng. Utilises the Fisher-Yates algorithm.
 * @param {Array} items An array of items.
 * @returns {Array} A new shuffled array of items.
 */
export function randSeedShuffle<T>(items: T[]): T[] {
  if (items.length <= 1) {
    return items;
  }
  const newArray = items.slice(0);
  for (let i = items.length - 1; i > 0; i--) {
    const j = Phaser.Math.RND.integerInRange(0, i);
    [ newArray[i], newArray[j] ] = [ newArray[j], newArray[i] ];
  }
  return newArray;
}

export function getFrameMs(frameCount: integer): integer {
  return Math.floor((1 / 60) * 1000 * frameCount);
}

export function getCurrentTime(): number {
  const date = new Date();
  return (((date.getHours() * 60 + date.getMinutes()) / 1440) + 0.675) % 1;
}

const secondsInHour = 3600;

export function getPlayTimeString(totalSeconds: integer): string {
  const days = `${Math.floor(totalSeconds / (secondsInHour * 24))}`;
  const hours = `${Math.floor(totalSeconds % (secondsInHour * 24) / secondsInHour)}`;
  const minutes = `${Math.floor(totalSeconds % secondsInHour / 60)}`;
  const seconds = `${Math.floor(totalSeconds % 60)}`;

  return `${days.padStart(2, "0")}:${hours.padStart(2, "0")}:${minutes.padStart(2, "0")}:${seconds.padStart(2, "0")}`;
}

/**
 * Generates IVs from a given {@linkcode id} by extracting 5 bits at a time
 * starting from the least significant bit up to the 30th most significant bit.
 * @param id 32-bit number
 * @returns An array of six numbers corresponding to 5-bit chunks from {@linkcode id}
 */
export function getIvsFromId(id: number): number[] {
  return [
    (id & 0x3E000000) >>> 25,
    (id & 0x01F00000) >>> 20,
    (id & 0x000F8000) >>> 15,
    (id & 0x00007C00) >>> 10,
    (id & 0x000003E0) >>> 5,
    (id & 0x0000001F)
  ];
}

export function formatLargeNumber(count: integer, threshold: integer): string {
  if (count < threshold) {
    return count.toString();
  }
  const ret = count.toString();
  let suffix = "";
  switch (Math.ceil(ret.length / 3) - 1) {
    case 1:
      suffix = "K";
      break;
    case 2:
      suffix = "M";
      break;
    case 3:
      suffix = "B";
      break;
    case 4:
      suffix = "T";
      break;
    case 5:
      suffix = "q";
      break;
    default:
      return "?";
  }
  const digits = ((ret.length + 2) % 3) + 1;
  let decimalNumber = ret.slice(digits, digits + 2);
  while (decimalNumber.endsWith("0")) {
    decimalNumber = decimalNumber.slice(0, -1);
  }
  return `${ret.slice(0, digits)}${decimalNumber ? `.${decimalNumber}` : ""}${suffix}`;
}

// Abbreviations from 10^0 to 10^33
const AbbreviationsLargeNumber: string[] = [ "", "K", "M", "B", "t", "q", "Q", "s", "S", "o", "n", "d" ];

export function formatFancyLargeNumber(number: number, rounded: number = 3): string {
  let exponent: number;

  if (number < 1000) {
    exponent = 0;
  } else {
    const maxExp = AbbreviationsLargeNumber.length - 1;

    exponent = Math.floor(Math.log(number) / Math.log(1000));
    exponent = Math.min(exponent, maxExp);

    number /= Math.pow(1000, exponent);
  }

  return `${(exponent === 0) || number % 1 === 0 ? number : number.toFixed(rounded)}${AbbreviationsLargeNumber[exponent]}`;
}

export function formatMoney(format: MoneyFormat, amount: number) {
  if (format === MoneyFormat.ABBREVIATED) {
    return formatFancyLargeNumber(amount);
  }
  return amount.toLocaleString();
}

export function formatStat(stat: integer, forHp: boolean = false): string {
  return formatLargeNumber(stat, forHp ? 100000 : 1000000);
}

export function getEnumKeys(enumType: any): string[] {
  return Object.values(enumType).filter(v => isNaN(parseInt(v!.toString()))).map(v => v!.toString());
}

export function getEnumValues(enumType: any): integer[] {
  return Object.values(enumType).filter(v => !isNaN(parseInt(v!.toString()))).map(v => parseInt(v!.toString()));
}

export function executeIf<T>(condition: boolean, promiseFunc: () => Promise<T>): Promise<T | null> {
  return condition ? promiseFunc() : new Promise<T | null>(resolve => resolve(null));
}

export const sessionIdKey = "pokerogue_sessionId";
// Check if the current hostname is 'localhost' or an IP address, and ensure a port is specified
export const isLocal = (
  (window.location.hostname === "localhost" ||
   /^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/.test(window.location.hostname)) &&
  window.location.port !== "") || window.location.hostname === "";

/**
 * @deprecated Refer to [pokerogue-api.ts](./plugins/api/pokerogue-api.ts) instead
 */
export const localServerUrl = import.meta.env.VITE_SERVER_URL ?? `http://${window.location.hostname}:${window.location.port + 1}`;

/**
 * Set the server URL based on whether it's local or not
 *
 * @deprecated Refer to [pokerogue-api.ts](./plugins/api/pokerogue-api.ts) instead
 */
export const apiUrl = localServerUrl ?? "https://api.pokerogue.net";
// used to disable api calls when isLocal is true and a server is not found
export let isLocalServerConnected = true;

export const isBeta = import.meta.env.MODE === "beta"; // this checks to see if the env mode is development. Technically this gives the same value for beta AND for dev envs

export function setCookie(cName: string, cValue: string): void {
  const expiration = new Date();
  expiration.setTime(new Date().getTime() + 3600000 * 24 * 30 * 3/*7*/);
  document.cookie = `${cName}=${cValue};Secure;SameSite=Strict;Domain=${window.location.hostname};Path=/;Expires=${expiration.toUTCString()}`;
}

export function removeCookie(cName: string): void {
  if (isBeta) {
    document.cookie = `${cName}=;Secure;SameSite=Strict;Domain=pokerogue.net;Path=/;Max-Age=-1`; // we need to remove the cookie from the main domain as well
  }

  document.cookie = `${cName}=;Secure;SameSite=Strict;Domain=${window.location.hostname};Path=/;Max-Age=-1`;
  document.cookie = `${cName}=;Secure;SameSite=Strict;Path=/;Max-Age=-1`; // legacy cookie without domain, for older cookies to prevent a login loop
}

export function getCookie(cName: string): string {
  // check if there are multiple cookies with the same name and delete them
  if (document.cookie.split(";").filter(c => c.includes(cName)).length > 1) {
    removeCookie(cName);
    return "";
  }
  const name = `${cName}=`;
  const ca = document.cookie.split(";");
  for (let i = 0; i < ca.length; i++) {
    let c = ca[i];
    while (c.charAt(0) === " ") {
      c = c.substring(1);
    }
    if (c.indexOf(name) === 0) {
      return c.substring(name.length, c.length);
    }
  }
  return "";
}

/**
 * When locally running the game, "pings" the local server
 * with a GET request to verify if a server is running,
 * sets isLocalServerConnected based on results
 */
export async function localPing() {
  if (isLocal) {
    const titleStats = await pokerogueApi.getGameTitleStats();
    isLocalServerConnected = !!titleStats;
    console.log("isLocalServerConnected:", isLocalServerConnected);
  }
}

/** Alias for the constructor of a class */
export type Constructor<T> = new(...args: unknown[]) => T;

export class BooleanHolder {
  public value: boolean;

  constructor(value: boolean) {
    this.value = value;
  }
}

export class NumberHolder {
  public value: number;

  constructor(value: number) {
    this.value = value;
  }
}

/** @deprecated Use {@linkcode NumberHolder} */
export class IntegerHolder extends NumberHolder {
  constructor(value: integer) {
    super(value);
  }
}

/** @deprecated Use {@linkcode NumberHolder}*/
export class FixedInt extends IntegerHolder {
  constructor(value: integer) {
    super(value);
  }
}

/** @deprecated */
export function fixedInt(value: integer): integer {
  return new FixedInt(value) as unknown as integer;
}

/**
 * Formats a string to title case
 * @param unformattedText Text to be formatted
 * @returns the formatted string
 */
export function formatText(unformattedText: string): string {
  const text = unformattedText.split("_");
  for (let i = 0; i < text.length; i++) {
    text[i] = text[i].charAt(0).toUpperCase() + text[i].substring(1).toLowerCase();
  }

  return text.join(" ");
}

export function toCamelCaseString(unformattedText: string): string {
  if (!unformattedText) {
    return "";
  }
  return unformattedText.split(/[_ ]/).filter(f => f).map((f, i) => i ? `${f[0].toUpperCase()}${f.slice(1).toLowerCase()}` : f.toLowerCase()).join("");
}

export function rgbToHsv(r: integer, g: integer, b: integer) {
  const v = Math.max(r, g, b);
  const c = v - Math.min(r, g, b);
  const h = c && ((v === r) ? (g - b) / c : ((v === g) ? 2 + (b - r) / c : 4 + (r - g) / c));
  return [ 60 * (h < 0 ? h + 6 : h), v && c / v, v ];
}

/**
 * Compare color difference in RGB
 * @param {Array} rgb1 First RGB color in array
 * @param {Array} rgb2 Second RGB color in array
 */
export function deltaRgb(rgb1: integer[], rgb2: integer[]): integer {
  const [ r1, g1, b1 ] = rgb1;
  const [ r2, g2, b2 ] = rgb2;
  const drp2 = Math.pow(r1 - r2, 2);
  const dgp2 = Math.pow(g1 - g2, 2);
  const dbp2 = Math.pow(b1 - b2, 2);
  const t = (r1 + r2) / 2;

  return Math.ceil(Math.sqrt(2 * drp2 + 4 * dgp2 + 3 * dbp2 + t * (drp2 - dbp2) / 256));
}

export function rgbHexToRgba(hex: string) {
  const color = hex.match(/^([\da-f]{2})([\da-f]{2})([\da-f]{2})$/i) ?? [ "000000", "00", "00", "00" ];
  return {
    r: parseInt(color[1], 16),
    g: parseInt(color[2], 16),
    b: parseInt(color[3], 16),
    a: 255
  };
}

export function rgbaToInt(rgba: integer[]): integer {
  return (rgba[0] << 24) + (rgba[1] << 16) + (rgba[2] << 8) + rgba[3];
}

/**
 * Provided valid HSV values, calculates and stitches together a string of that
 * HSV color's corresponding hex code.
 *
 * Sourced from {@link https://stackoverflow.com/a/44134328}.
 * @param h Hue in degrees, must be in a range of [0, 360]
 * @param s Saturation percentage, must be in a range of [0, 1]
 * @param l Ligthness percentage, must be in a range of [0, 1]
 * @returns a string of the corresponding color hex code with a "#" prefix
 */
export function hslToHex(h: number, s: number, l: number): string {
  const a = s * Math.min(l, 1 - l);
  const f = (n: number) => {
    const k = (n + h / 30) % 12;
    const rgb = l - a * Math.max(-1, Math.min(k - 3, 9 - k, 1));
    return Math.round(rgb * 255).toString(16).padStart(2, "0");
  };
  return `#${f(0)}${f(8)}${f(4)}`;
}

/**
 * This function returns `true` if all localized images used by the game have been added for the given language.
 *
 * If the lang is not in the function, it usually means that lang is going to use the default english version
 *
 * English itself counts as not available
*/
export function hasAllLocalizedSprites(lang?: string): boolean {
  // IMPORTANT - ONLY ADD YOUR LANG HERE IF YOU'VE ALREADY ADDED ALL THE NECESSARY IMAGES
  if (!lang) {
    lang = i18next.resolvedLanguage;
  }

  switch (lang) {
    case "es-ES":
    case "fr":
    case "de":
    case "it":
    case "zh-CN":
    case "zh-TW":
    case "pt-BR":
    case "ko":
    case "ja":
      return true;
    default:
      return false;
  }
}

/**
 * Prints the type and name of all game objects in a container for debugging purposes
 * @param container container with game objects inside it
 */
export function printContainerList(container: Phaser.GameObjects.Container): void {
  console.log(container.list.map(go => {
    return { type: go.type, name: go.name };
  }));
}


/**
 * Truncate a string to a specified maximum length and add an ellipsis if it exceeds that length.
 *
 * @param str - The string to be truncated.
 * @param maxLength - The maximum length of the truncated string, defaults to 10.
 * @returns The truncated string with an ellipsis if it was longer than maxLength.
 */
export function truncateString(str: String, maxLength: number = 10) {
  // Check if the string length exceeds the maximum length
  if (str.length > maxLength) {
    // Truncate the string and add an ellipsis
    return str.slice(0, maxLength - 3) + "..."; // Subtract 3 to accommodate the ellipsis
  }
  // Return the original string if it does not exceed the maximum length
  return str;
}

/**
 * Perform a deep copy of an object.
 *
 * @param values - The object to be deep copied.
 * @returns A new object that is a deep copy of the input.
 */
export function deepCopy(values: object): object {
  // Convert the object to a JSON string and parse it back to an object to perform a deep copy
  return JSON.parse(JSON.stringify(values));
}

/**
 * Convert a space-separated string into a capitalized and underscored string.
 *
 * @param input - The string to be converted.
 * @returns The converted string with words capitalized and separated by underscores.
 */
export function reverseValueToKeySetting(input) {
  // Split the input string into an array of words
  const words = input.split(" ");
  // Capitalize the first letter of each word and convert the rest to lowercase
  const capitalizedWords = words.map(word => word.charAt(0).toUpperCase() + word.slice(1).toLowerCase());
  // Join the capitalized words with underscores and return the result
  return capitalizedWords.join("_");
}

/**
 * Capitalize a string.
 *
 * @param str - The string to be capitalized.
 * @param sep - The separator between the words of the string.
 * @param lowerFirstChar - Whether the first character of the string should be lowercase or not.
 * @param returnWithSpaces - Whether the returned string should have spaces between the words or not.
 * @returns The capitalized string.
 */
export function capitalizeString(str: string, sep: string, lowerFirstChar: boolean = true, returnWithSpaces: boolean = false) {
  if (str) {
    const splitedStr = str.toLowerCase().split(sep);

    for (let i = +lowerFirstChar; i < splitedStr?.length; i++) {
      splitedStr[i] = splitedStr[i].charAt(0).toUpperCase() + splitedStr[i].substring(1);
    }

    return returnWithSpaces ? splitedStr.join(" ") : splitedStr.join("");
  }
  return null;
}

export function isNullOrUndefined(object: any): object is undefined | null {
  return null === object || undefined === object;
}

/**
 * Capitalizes the first letter of a string
 */
export function capitalizeFirstLetter(str: string) {
  return str.charAt(0).toUpperCase() + str.slice(1);
}

/**
 * This function is used in the context of a Pokémon battle game to calculate the actual integer damage value from a float result.
 * Many damage calculation formulas involve various parameters and result in float values.
 * The actual damage applied to a Pokémon's HP must be an integer.
 * This function helps in ensuring that by flooring the float value and enforcing a minimum damage value.
 *
 * @param value - The float value to convert.
 * @param minValue - The minimum integer value to return. Defaults to 1.
 * @returns The converted value as an integer.
 */
export function toDmgValue(value: number, minValue: number = 1) {
  return Math.max(Math.floor(value), minValue);
}

/**
 * Helper method to localize a sprite key (e.g. for types)
 * @param baseKey the base key of the sprite (e.g. `type`)
 * @returns the localized sprite key
 */
export function getLocalizedSpriteKey(baseKey: string) {
  return `${baseKey}${hasAllLocalizedSprites(i18next.resolvedLanguage) ? `_${i18next.resolvedLanguage}` : ""}`;
}

/**
 * Check if a number is **inclusive** between two numbers
 * @param num the number to check
 * @param min the minimum value (included)
 * @param max the maximum value (included)
 * @returns `true` if number is **inclusive** between min and max
 */
export function isBetween(num: number, min: number, max: number): boolean {
  return num >= min && num <= max;
}

/**
 * Helper method to return the animation filename for a given move
 *
 * @param move the move for which the animation filename is needed
 */
export function animationFileName(move: Moves): string {
  return Moves[move].toLowerCase().replace(/\_/g, "-");
}

/**
 * Transforms a camelCase string into a kebab-case string
 * @param str The camelCase string
 * @returns A kebab-case string
 *
 * @source {@link https://stackoverflow.com/a/67243723/}
 */
export function camelCaseToKebabCase(str: string): string {
  return str.replace(/[A-Z]+(?![a-z])|[A-Z]/g, (s, o) => (o ? "-" : "") + s.toLowerCase());
}