#include <stddef.h>  // for size_t
#include <memory>    // for allocator, allocator_traits<>::value_type
#include <string>    // for basic_string, wstring
#include <utility>   // for move
#include <vector>    // for vector, __alloc_traits<>::value_type

#include "ftxui/dom/elements.hpp"  // for Element, gauge, text, vbox, spinner

namespace ftxui {

static const std::vector<std::vector<std::vector<std::wstring>>> elements = {
    {
        {L"Replaced by the gauge"},
    },
    {
        {L".  "},
        {L".. "},
        {L"..."},
    },
    {
        {L"|"},
        {L"/"},
        {L"-"},
        {L"\\"},
    },
    {
        {L"+"},
        {L"x"},
    },
    {
        {L"|  "},
        {L"|| "},
        {L"|||"},
    },
    {
        {L"←"},
        {L"↖"},
        {L"↑"},
        {L"↗"},
        {L"→"},
        {L"↘"},
        {L"↓"},
        {L"↙"},
    },
    {
        {L"▁"},
        {L"▂"},
        {L"▃"},
        {L"▄"},
        {L"▅"},
        {L"▆"},
        {L"▇"},
        {L"█"},
        {L"▇"},
        {L"▆"},
        {L"▅"},
        {L"▄"},
        {L"▃"},
        {L"▁"},
    },
    {
        {L"▉"},
        {L"▊"},
        {L"▋"},
        {L"▌"},
        {L"▍"},
        {L"▎"},
        {L"▏"},
        {L"▎"},
        {L"▍"},
        {L"▌"},
        {L"▋"},
        {L"▊"},
    },
    {
        {L"▖"},
        {L"▘"},
        {L"▝"},
        {L"▗"},
    },
    {
        {L"◢"},
        {L"◣"},
        {L"◤"},
        {L"◥"},
    },
    {
        {L"◰"},
        {L"◳"},
        {L"◲"},
        {L"◱"},
    },
    {
        {L"◴"},
        {L"◷"},
        {L"◶"},
        {L"◵"},
    },
    {
        {L"◐"},
        {L"◓"},
        {L"◑"},
        {L"◒"},
    },
    {
        {L"◡"},
        {L"⊙"},
        {L"◠"},
    },
    {
        {L"⠁"},
        {L"⠂"},
        {L"⠄"},
        {L"⡀"},
        {L"⢀"},
        {L"⠠"},
        {L"⠐"},
        {L"⠈"},
    },
    {
        {L"⠋"},
        {L"⠙"},
        {L"⠹"},
        {L"⠸"},
        {L"⠼"},
        {L"⠴"},
        {L"⠦"},
        {L"⠧"},
        {L"⠇"},
        {L"⠏"},
    },
    {
        {L"(*----------)"}, {L"(-*---------)"}, {L"(--*--------)"},
        {L"(---*-------)"}, {L"(----*------)"}, {L"(-----*-----)"},
        {L"(------*----)"}, {L"(-------*---)"}, {L"(--------*--)"},
        {L"(---------*-)"}, {L"(----------*)"}, {L"(---------*-)"},
        {L"(--------*--)"}, {L"(-------*---)"}, {L"(------*----)"},
        {L"(-----*-----)"}, {L"(----*------)"}, {L"(---*-------)"},
        {L"(--*--------)"}, {L"(-*---------)"},
    },
    {
        {L"[      ]"},
        {L"[=     ]"},
        {L"[==    ]"},
        {L"[===   ]"},
        {L"[====  ]"},
        {L"[===== ]"},
        {L"[======]"},
        {L"[===== ]"},
        {L"[====  ]"},
        {L"[===   ]"},
        {L"[==    ]"},
        {L"[=     ]"},
    },
    {
        {L"[      ]"},
        {L"[=     ]"},
        {L"[==    ]"},
        {L"[===   ]"},
        {L"[====  ]"},
        {L"[===== ]"},
        {L"[======]"},
        {L"[ =====]"},
        {L"[  ====]"},
        {L"[   ===]"},
        {L"[    ==]"},
        {L"[     =]"},
    },
    {
        {L"[==    ]"},
        {L"[==    ]"},
        {L"[==    ]"},
        {L"[==    ]"},
        {L"[==    ]"},
        {L" [==   ]"},
        {L"[  ==  ]"},
        {L"[   == ]"},
        {L"[    ==]"},
        {L"[    ==]"},
        {L"[    ==]"},
        {L"[    ==]"},
        {L"[    ==]"},
        {L"[   ==] "},
        {L"[  ==  ]"},
        {L"[ ==   ]"},
    },
    {{
         L" ─╮",
         L"  │",
         L"   ",
     },
     {
         L"  ╮",
         L"  │",
         L"  ╯",
     },
     {
         L"   ",
         L"  │",
         L" ─╯",
     },
     {
         L"   ",
         L"   ",
         L"╰─╯",
     },
     {
         L"   ",
         L"│  ",
         L"╰─ ",
     },
     {
         L"╭  ",
         L"│  ",
         L"╰  ",
     },
     {
         L"╭─ ",
         L"│  ",
         L"   ",
     },
     {
         L"╭─╮",
         L"   ",
         L"   ",
     }},
    {{
         L"   /\\O  ",
         L"    /\\/ ",
         L"   /\\   ",
         L"  /  \\  ",
         L"LOL  LOL",
     },
     {
         L"    _O  ",
         L"   //|_ ",
         L"    |   ",
         L"   /|   ",
         L"   LLOL ",
     },
     {
         L"     O  ",
         L"    /_  ",
         L"    |\\  ",
         L"   / |  ",
         L" LOLLOL ",
     }}};

/// @brief Useful to represent the effect of time and/or events. This display an
/// ASCII art "video".
/// @param charset_index The type of "video".
/// @param image_index The "frame" of the video. You need to increase this for
/// every "step".
/// @ingroup dom
Element spinner(int charset_index, size_t image_index) {
  if (charset_index == 0) {
    image_index %= 40;
    if (image_index > 20)
      image_index = 40 - image_index;
    return gauge(image_index * 0.05);
  }
  charset_index %= elements.size();
  image_index %= elements[charset_index].size();
  std::vector<Element> lines;
  for (const auto& it : elements[charset_index][image_index])
    lines.push_back(text(it));
  return vbox(std::move(lines));
}

}  // namespace ftxui

// Copyright 2020 Arthur Sonzogni. All rights reserved.
// Use of this source code is governed by the MIT license that can be found in
// the LICENSE file.