/***************************************************************************
 *   This file is part of Melody Player, a library for Arduino             *
 *   to play notes on piezoelectric buzzers.                               *
 *                                                                         *
 *   Copyright (C) 2020-2022  Fabiano Riccardi                             *
 *                                                                         *
 *   This library is free software; you can redistribute                   *
 *   it and/or modify it under the terms of the GNU Lesser General Public  *
 *   License as published by the Free Software Foundation; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library 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     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this library; if not, see <http://www.gnu.org/licenses/>   *
 ***************************************************************************/
#ifndef PITCHES_UNORDERED_MAP_H
#define PITCHES_UNORDERED_MAP_H

#include <array>

/**
 * This class resembles the std::string_view class introduced with c++17. MelodyPlayer uses this
 * version to ensure retro-compatibility with esp8266-core v2.x.x, which uses GCC v4.8.2.
 */
struct StringView {
  StringView() = delete;
  constexpr StringView(const char* s) : str(s), lenght(__builtin_strlen(s)) {}

  constexpr bool operator==(const StringView& other) const {
    return lenght == other.lenght && (__builtin_memcmp(str, other.str, lenght) == 0);
  }

  constexpr size_t length() const {
    return lenght;
  }

  constexpr const char* data() const {
    return str;
  }

private:
  const char* str;
  size_t lenght;
};

// clang-format off
constexpr std::array<std::pair<StringView, unsigned short>, 92> noteMapping{{
  {"SILENCE", 0   },
  { "B0",     31  },
  { "C1",     33  },
  { "CS1",    35  },
  { "D1",     37  },
  { "DS1",    39  },
  { "D1",     37  },
  { "DS1",    39  },
  { "E1",     41  },
  { "F1",     44  },
  { "FS1",    46  },
  { "G1",     49  },
  { "GS1",    52  },
  { "A1",     55  },
  { "AS1",    58  },
  { "B1",     62  },
  { "C2",     65  },
  { "CS2",    69  },
  { "D2",     73  },
  { "DS2",    78  },
  { "E2",     82  },
  { "F2",     87  },
  { "FS2",    93  },
  { "G2",     98  },
  { "GS2",    104 },
  { "A2",     110 },
  { "AS2",    117 },
  { "B2",     123 },
  { "C3",     131 },
  { "CS3",    139 },
  { "D3",     147 },
  { "DS3",    156 },
  { "E3",     165 },
  { "F3",     175 },
  { "FS3",    185 },
  { "G3",     196 },
  { "GS3",    208 },
  { "A3",     220 },
  { "AS3",    233 },
  { "B3",     247 },
  { "C4",     262 },
  { "CS4",    277 },
  { "D4",     294 },
  { "DS4",    311 },
  { "E4",     330 },
  { "F4",     349 },
  { "FS4",    370 },
  { "G4",     392 },
  { "GS4",    415 },
  { "A4",     440 },
  { "AS4",    466 },
  { "B4",     494 },
  { "C5",     523 },
  { "CS5",    554 },
  { "D5",     587 },
  { "DS5",    622 },
  { "E5",     659 },
  { "F5",     698 },
  { "FS5",    740 },
  { "G5",     784 },
  { "GS5",    831 },
  { "A5",     880 },
  { "AS5",    932 },
  { "B5",     988 },
  { "C6",     1047},
  { "CS6",    1109},
  { "D6",     1175},
  { "DS6",    1245},
  { "E6",     1319},
  { "F6",     1397},
  { "FS6",    1480},
  { "G6",     1568},
  { "GS6",    1661},
  { "A6",     1760},
  { "AS6",    1865},
  { "B6",     1976},
  { "C7",     2093},
  { "CS7",    2217},
  { "D7",     2349},
  { "DS7",    2489},
  { "E7",     2637},
  { "F7",     2794},
  { "FS7",    2960},
  { "G7",     3136},
  { "GS7",    3322},
  { "A7",     3520},
  { "AS7",    3729},
  { "B7",     3951},
  { "C8",     4186},
  { "CS8",    4435},
  { "D8",     4699},
  { "DS8",    4978}
}};
// clang-format on

#endif  // END PITCHES_UNORDERED_MAP_H