/*
 * Copyright (c) 2019 - 2020 Arnaud Vergnet.
 *
 * This file is part of Campus INSAT.
 *
 * Campus INSAT is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Campus INSAT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Campus INSAT.  If not, see <https://www.gnu.org/licenses/>.
 */

import type {ProxiwashMachineType} from '../screens/Proxiwash/ProxiwashScreen';
import type {RuFoodCategoryType} from '../screens/Services/SelfMenuScreen';

/**
 * Singleton class used to manage april fools
 */
export default class AprilFoolsManager {
  static instance: AprilFoolsManager | null = null;

  static fakeMachineNumber = [
    '',
    'cos(ln(1))',
    '0,5⁻¹',
    '567/189',
    '√2×√8',
    '√50×sin(9π/4)',
    '⌈π+e⌉',
    'div(rot(B))+7',
    '4×cosh(0)+4',
    '8-(-i)²',
    '|5√2+5√2i|',
    '1×10¹+1×10⁰',
    'Re(√192e^(iπ/6))',
  ];

  aprilFoolsEnabled: boolean;

  constructor() {
    const today = new Date();
    this.aprilFoolsEnabled = today.getDate() === 1 && today.getMonth() === 3;
  }

  /**
   * Get this class instance or create one if none is found
   * @returns {ThemeManager}
   */
  static getInstance(): AprilFoolsManager {
    if (AprilFoolsManager.instance == null) {
      AprilFoolsManager.instance = new AprilFoolsManager();
    }
    return AprilFoolsManager.instance;
  }

  /**
   * Adds fake menu entries
   *
   * @param menu
   * @returns {Object}
   */
  static getFakeMenuItem(
    menu: Array<RuFoodCategoryType>,
  ): Array<RuFoodCategoryType> {
    menu[1].dishes.splice(4, 0, {name: 'Coq au vin'});
    menu[1].dishes.splice(2, 0, {name: "Bat'Soupe"});
    menu[1].dishes.splice(1, 0, {name: 'Pave de loup'});
    menu[1].dishes.splice(0, 0, {name: 'Béranger à point'});
    menu[1].dishes.splice(0, 0, {name: "Pieds d'Arnaud"});
    return menu;
  }

  /**
   * Changes proxiwash dryers order
   *
   * @param dryers
   */
  static getNewProxiwashDryerOrderedList(
    dryers: Array<ProxiwashMachineType> | null,
  ) {
    if (dryers != null) {
      const second = dryers[1];
      dryers.splice(1, 1);
      dryers.push(second);
    }
  }

  /**
   * Changes proxiwash washers order
   *
   * @param washers
   */
  static getNewProxiwashWasherOrderedList(
    washers: Array<ProxiwashMachineType> | null,
  ) {
    if (washers != null) {
      const first = washers[0];
      const second = washers[1];
      const fifth = washers[4];
      const ninth = washers[8];
      washers.splice(8, 1, second);
      washers.splice(4, 1, ninth);
      washers.splice(1, 1, first);
      washers.splice(0, 1, fifth);
    }
  }

  /**
   * Gets the new display number for the given machine number
   *
   * @param number
   * @returns {string}
   */
  static getProxiwashMachineDisplayNumber(number: number): string {
    return AprilFoolsManager.fakeMachineNumber[number];
  }

  /**
   * Gets the new and ugly april fools theme
   *
   * @param currentTheme
   * @returns {{colors: {textDisabled: string, agendaDayTextColor: string, surface: string, background: string, dividerBackground: string, accent: string, agendaBackgroundColor: string, tabIcon: string, card: string, primary: string}}}
   */
  static getAprilFoolsTheme(
    currentTheme: ReactNativePaper.Theme,
  ): ReactNativePaper.Theme {
    return {
      ...currentTheme,
      colors: {
        ...currentTheme.colors,
        primary: '#00be45',
        accent: '#00be45',
        background: '#d02eee',
        tabIcon: '#380d43',
        card: '#eed639',
        surface: '#eed639',
        dividerBackground: '#c72ce4',
        textDisabled: '#b9b9b9',

        // Calendar/Agenda
        agendaBackgroundColor: '#c72ce4',
        agendaDayTextColor: '#6d6d6d',
      },
    };
  }

  isAprilFoolsEnabled(): boolean {
    return this.aprilFoolsEnabled;
  }
}