/*
 * 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 { DarkTheme, DefaultTheme } from 'react-native-paper';
import { Appearance } from 'react-native-appearance';
import AsyncStorageManager from './AsyncStorageManager';
import AprilFoolsManager from './AprilFoolsManager';

const colorScheme = Appearance.getColorScheme();

declare global {
  namespace ReactNativePaper {
    interface ThemeColors {
      primary: string;
      accent: string;
      border: string;
      tabIcon: string;
      card: string;
      dividerBackground: string;
      ripple: string;
      textDisabled: string;
      icon: string;
      subtitle: string;
      success: string;
      warning: string;
      danger: string;

      // Calendar/Agenda
      agendaBackgroundColor: string;
      agendaDayTextColor: string;

      // PROXIWASH
      proxiwashFinishedColor: string;
      proxiwashReadyColor: string;
      proxiwashRunningColor: string;
      proxiwashRunningNotStartedColor: string;
      proxiwashRunningBgColor: string;
      proxiwashBrokenColor: string;
      proxiwashErrorColor: string;
      proxiwashUnknownColor: string;

      // Screens
      planningColor: string;
      proximoColor: string;
      proxiwashColor: string;
      menuColor: string;
      tutorinsaColor: string;

      // Tetris
      tetrisBackground: string;
      tetrisScore: string;
      tetrisI: string;
      tetrisO: string;
      tetrisT: string;
      tetrisS: string;
      tetrisZ: string;
      tetrisJ: string;
      tetrisL: string;

      gameGold: string;
      gameSilver: string;
      gameBronze: string;

      // Mascot Popup
      mascotMessageArrow: string;
    }
  }
}

const CustomWhiteTheme: ReactNativePaper.Theme = {
  ...DefaultTheme,
  colors: {
    ...DefaultTheme.colors,
    primary: '#be1522',
    accent: '#be1522',
    border: '#e2e2e2',
    tabIcon: '#929292',
    card: '#fff',
    dividerBackground: '#e2e2e2',
    ripple: 'rgba(0,0,0,0.2)',
    textDisabled: '#c1c1c1',
    icon: '#5d5d5d',
    subtitle: '#707070',
    success: '#5cb85c',
    warning: '#f0ad4e',
    danger: '#d9534f',

    // Calendar/Agenda
    agendaBackgroundColor: '#f3f3f4',
    agendaDayTextColor: '#636363',

    // PROXIWASH
    proxiwashFinishedColor: '#a5dc9d',
    proxiwashReadyColor: 'transparent',
    proxiwashRunningColor: '#a0ceff',
    proxiwashRunningNotStartedColor: '#c9e0ff',
    proxiwashRunningBgColor: '#c7e3ff',
    proxiwashBrokenColor: '#ffa8a2',
    proxiwashErrorColor: '#ffa8a2',
    proxiwashUnknownColor: '#b6b6b6',

    // Screens
    planningColor: '#d9b10a',
    proximoColor: '#ec5904',
    proxiwashColor: '#1fa5ee',
    menuColor: '#e91314',
    tutorinsaColor: '#f93943',

    // Tetris
    tetrisBackground: '#f0f0f0',
    tetrisScore: '#e2bd33',
    tetrisI: '#3cd9e6',
    tetrisO: '#ffdd00',
    tetrisT: '#a716e5',
    tetrisS: '#09c528',
    tetrisZ: '#ff0009',
    tetrisJ: '#2a67e3',
    tetrisL: '#da742d',

    gameGold: '#ffd610',
    gameSilver: '#7b7b7b',
    gameBronze: '#a15218',

    // Mascot Popup
    mascotMessageArrow: '#dedede',
  },
};

const CustomDarkTheme: ReactNativePaper.Theme = {
  ...DarkTheme,
  colors: {
    ...DarkTheme.colors,
    primary: '#be1522',
    accent: '#be1522',
    border: '#222222',
    tabIcon: '#6d6d6d',
    card: 'rgb(18,18,18)',
    dividerBackground: '#222222',
    ripple: 'rgba(255,255,255,0.2)',
    textDisabled: '#5b5b5b',
    icon: '#b3b3b3',
    subtitle: '#aaaaaa',
    success: '#5cb85c',
    warning: '#f0ad4e',
    danger: '#d9534f',

    // Calendar/Agenda
    agendaBackgroundColor: '#171717',
    agendaDayTextColor: '#6d6d6d',

    // PROXIWASH
    proxiwashFinishedColor: '#31682c',
    proxiwashReadyColor: 'transparent',
    proxiwashRunningColor: '#213c79',
    proxiwashRunningNotStartedColor: '#1e263e',
    proxiwashRunningBgColor: '#1a2033',
    proxiwashBrokenColor: '#7e2e2f',
    proxiwashErrorColor: '#7e2e2f',
    proxiwashUnknownColor: '#535353',

    // Screens
    planningColor: '#d99e09',
    proximoColor: '#ec5904',
    proxiwashColor: '#1fa5ee',
    menuColor: '#b81213',
    tutorinsaColor: '#f93943',

    // Tetris
    tetrisBackground: '#181818',
    tetrisScore: '#e2d707',
    tetrisI: '#30b3be',
    tetrisO: '#c1a700',
    tetrisT: '#9114c7',
    tetrisS: '#08a121',
    tetrisZ: '#b50008',
    tetrisJ: '#0f37b9',
    tetrisL: '#b96226',

    gameGold: '#ffd610',
    gameSilver: '#7b7b7b',
    gameBronze: '#a15218',

    // Mascot Popup
    mascotMessageArrow: '#323232',
  },
};

/**
 * Singleton class used to manage themes
 */
export default class ThemeManager {
  static instance: ThemeManager | null = null;

  updateThemeCallback: null | (() => void);

  constructor() {
    this.updateThemeCallback = null;
  }

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

  /**
   * Gets night mode status.
   * If Follow System Preferences is enabled, will first use system theme.
   * If disabled or not available, will use value stored din preferences
   *
   * @returns {boolean} Night mode state
   */
  static getNightMode(): boolean {
    return (
      (AsyncStorageManager.getBool(
        AsyncStorageManager.PREFERENCES.nightMode.key
      ) &&
        (!AsyncStorageManager.getBool(
          AsyncStorageManager.PREFERENCES.nightModeFollowSystem.key
        ) ||
          colorScheme === 'no-preference')) ||
      (AsyncStorageManager.getBool(
        AsyncStorageManager.PREFERENCES.nightModeFollowSystem.key
      ) &&
        colorScheme === 'dark')
    );
  }

  /**
   * Get the current theme based on night mode and events
   *
   * @returns {ReactNativePaper.Theme} The current theme
   */
  static getCurrentTheme(): ReactNativePaper.Theme {
    if (AprilFoolsManager.getInstance().isAprilFoolsEnabled()) {
      return AprilFoolsManager.getAprilFoolsTheme(CustomWhiteTheme);
    }
    return ThemeManager.getBaseTheme();
  }

  /**
   * Get the theme based on night mode
   *
   * @return {ReactNativePaper.Theme} The theme
   */
  static getBaseTheme(): ReactNativePaper.Theme {
    if (ThemeManager.getNightMode()) {
      return CustomDarkTheme;
    }
    return CustomWhiteTheme;
  }

  /**
   * Sets the function to be called when the theme is changed (allows for general reload of the app)
   *
   * @param callback Function to call after theme change
   */
  setUpdateThemeCallback(callback: () => void) {
    this.updateThemeCallback = callback;
  }

  /**
   * Set night mode and save it to preferences
   *
   * @param isNightMode True to enable night mode, false to disable
   */
  setNightMode(isNightMode: boolean) {
    AsyncStorageManager.set(
      AsyncStorageManager.PREFERENCES.nightMode.key,
      isNightMode
    );
    if (this.updateThemeCallback != null) {
      this.updateThemeCallback();
    }
  }
}