#ifndef YAZE_APP_EDITOR_MESSAGE_MESSAGE_DATA_H
#define YAZE_APP_EDITOR_MESSAGE_MESSAGE_DATA_H

#include <optional>
#include <regex>
#include <string>
#include <unordered_map>
#include <vector>
#include <string_view>

#include "absl/strings/str_format.h"
#include "absl/strings/str_replace.h"
#include "absl/strings/match.h"
#include "app/rom.h"

namespace yaze {
namespace editor {

const std::string kBankToken = "BANK";
const std::string DICTIONARYTOKEN = "D";
constexpr uint8_t kMessageTerminator = 0x7F;
constexpr uint8_t DICTOFF = 0x88;
constexpr uint8_t kWidthArraySize = 100;

static const std::unordered_map<uint8_t, wchar_t> CharEncoder = {
    {0x00, 'A'},  {0x01, 'B'},  {0x02, 'C'},  {0x03, 'D'},  {0x04, 'E'},
    {0x05, 'F'},  {0x06, 'G'},  {0x07, 'H'},  {0x08, 'I'},  {0x09, 'J'},
    {0x0A, 'K'},  {0x0B, 'L'},  {0x0C, 'M'},  {0x0D, 'N'},  {0x0E, 'O'},
    {0x0F, 'P'},  {0x10, 'Q'},  {0x11, 'R'},  {0x12, 'S'},  {0x13, 'T'},
    {0x14, 'U'},  {0x15, 'V'},  {0x16, 'W'},  {0x17, 'X'},  {0x18, 'Y'},
    {0x19, 'Z'},  {0x1A, 'a'},  {0x1B, 'b'},  {0x1C, 'c'},  {0x1D, 'd'},
    {0x1E, 'e'},  {0x1F, 'f'},  {0x20, 'g'},  {0x21, 'h'},  {0x22, 'i'},
    {0x23, 'j'},  {0x24, 'k'},  {0x25, 'l'},  {0x26, 'm'},  {0x27, 'n'},
    {0x28, 'o'},  {0x29, 'p'},  {0x2A, 'q'},  {0x2B, 'r'},  {0x2C, 's'},
    {0x2D, 't'},  {0x2E, 'u'},  {0x2F, 'v'},  {0x30, 'w'},  {0x31, 'x'},
    {0x32, 'y'},  {0x33, 'z'},  {0x34, '0'},  {0x35, '1'},  {0x36, '2'},
    {0x37, '3'},  {0x38, '4'},  {0x39, '5'},  {0x3A, '6'},  {0x3B, '7'},
    {0x3C, '8'},  {0x3D, '9'},  {0x3E, '!'},  {0x3F, '?'},  {0x40, '-'},
    {0x41, '.'},  {0x42, ','},  {0x44, '>'},  {0x45, '('},  {0x46, ')'},
    {0x4C, '"'},  {0x51, '\''}, {0x59, ' '},  {0x5A, '<'},  {0x5F, L'¡'},
    {0x60, L'¡'}, {0x61, L'¡'}, {0x62, L' '}, {0x63, L' '}, {0x64, L' '},
    {0x65, ' '},  {0x66, '_'},
};

uint8_t FindMatchingCharacter(char value);
int8_t FindDictionaryEntry(uint8_t value);
std::vector<uint8_t> ParseMessageToData(std::string str);

struct DictionaryEntry {
  uint8_t ID = 0;
  std::string Contents = "";
  std::vector<uint8_t> Data;
  int Length = 0;
  std::string Token = "";

  DictionaryEntry() = default;
  DictionaryEntry(uint8_t i, std::string_view s)
      : ID(i), Contents(s), Length(s.length()) {
    Token = absl::StrFormat("[%s:%02X]", DICTIONARYTOKEN, ID);
    Data = ParseMessageToData(Contents);
  }

  bool ContainedInString(std::string_view s) const {
    return absl::StrContains(s, Contents);
  }

  std::string ReplaceInstancesOfIn(std::string_view s) const {
    auto replaced_string = std::string(s);
    size_t pos = replaced_string.find(Contents);
    while (pos != std::string::npos) {
      replaced_string.replace(pos, Contents.length(), Token);
      pos = replaced_string.find(Contents, pos + Token.length());
    }
    return replaced_string;
  }
};

constexpr int kTextData = 0xE0000;
constexpr int kTextDataEnd = 0xE7FFF;
constexpr int kNumDictionaryEntries = 0x61;
constexpr int kPointersDictionaries = 0x74703;
constexpr uint8_t kScrollVertical = 0x73;
constexpr uint8_t kLine1 = 0x74;
constexpr uint8_t kLine2 = 0x75;
constexpr uint8_t kLine3 = 0x76;

std::vector<DictionaryEntry> BuildDictionaryEntries(Rom* rom);
std::string ReplaceAllDictionaryWords(std::string str,
                                      std::vector<DictionaryEntry> dictionary);
DictionaryEntry FindRealDictionaryEntry(
    uint8_t value, std::vector<DictionaryEntry> dictionary);

// Inserted into commands to protect them from dictionary replacements.
const std::string CHEESE = "\uBEBE";

struct MessageData {
  int ID = 0;
  int Address = 0;
  std::string RawString;
  std::string ContentsParsed;
  std::vector<uint8_t> Data;
  std::vector<uint8_t> DataParsed;

  MessageData() = default;
  MessageData(int id, int address, const std::string& rawString,
              const std::vector<uint8_t>& rawData,
              const std::string& parsedString,
              const std::vector<uint8_t>& parsedData)
      : ID(id),
        Address(address),
        RawString(rawString),
        ContentsParsed(parsedString),
        Data(rawData),
        DataParsed(parsedData) {}

  // Copy constructor
  MessageData(const MessageData& other) {
    ID = other.ID;
    Address = other.Address;
    RawString = other.RawString;
    Data = other.Data;
    DataParsed = other.DataParsed;
    ContentsParsed = other.ContentsParsed;
  }

  std::string OptimizeMessageForDictionary(
      std::string_view message_string,
      const std::vector<DictionaryEntry>& dictionary) {
    std::stringstream protons;
    bool command = false;
    for (const auto& c : message_string) {
      if (c == '[') {
        command = true;
      } else if (c == ']') {
        command = false;
      }

      protons << c;
      if (command) {
        protons << CHEESE;
      }
    }

    std::string protons_string = protons.str();
    std::string replaced_string =
        ReplaceAllDictionaryWords(protons_string, dictionary);
    std::string final_string =
        absl::StrReplaceAll(replaced_string, {{CHEESE, ""}});

    return final_string;
  }

  void SetMessage(const std::string& message,
                  const std::vector<DictionaryEntry>& dictionary) {
    RawString = message;
    ContentsParsed = OptimizeMessageForDictionary(message, dictionary);
  }
};

struct TextElement {
  uint8_t ID;
  std::string Token;
  std::string GenericToken;
  std::string Pattern;
  std::string StrictPattern;
  std::string Description;
  bool HasArgument;

  TextElement() = default;
  TextElement(uint8_t id, const std::string& token, bool arg,
              const std::string& description) {
    ID = id;
    Token = token;
    if (arg) {
      GenericToken = absl::StrFormat("[%s:##]", Token);
    } else {
      GenericToken = absl::StrFormat("[%s]", Token);
    }
    HasArgument = arg;
    Description = description;
    if (arg) {
      Pattern = absl::StrFormat(
          "\\[%s(:[0-9A-F]{1,2})?\\]",
          absl::StrReplaceAll(Token, {{"[", "\\["}, {"]", "\\]"}}));
    } else {
      Pattern = absl::StrFormat(
          "\\[%s\\]", absl::StrReplaceAll(Token, {{"[", "\\["}, {"]", "\\]"}}));
    }
    StrictPattern = absl::StrFormat("^%s$", Pattern);
  }

  std::string GetParamToken(uint8_t value = 0) const {
    if (HasArgument) {
      return absl::StrFormat("[%s:%02X]", Token, value);
    } else {
      return absl::StrFormat("[%s]", Token);
    }
  }

  std::smatch MatchMe(std::string dfrag) const {
    std::regex pattern(StrictPattern);
    std::smatch match;
    std::regex_match(dfrag, match, pattern);
    return match;
  }

  bool Empty() const { return ID == 0; }

  // Comparison operator
  bool operator==(const TextElement& other) const { return ID == other.ID; }
};

const static std::string kWindowBorder = "Window border";
const static std::string kWindowPosition = "Window position";
const static std::string kScrollSpeed = "Scroll speed";
const static std::string kTextDrawSpeed = "Text draw speed";
const static std::string kTextColor = "Text color";
const static std::string kPlayerName = "Player name";
const static std::string kLine1Str = "Line 1";
const static std::string kLine2Str = "Line 2";
const static std::string kLine3Str = "Line 3";
const static std::string kWaitForKey = "Wait for key";
const static std::string kScrollText = "Scroll text";
const static std::string kDelayX = "Delay X";
const static std::string kBCDNumber = "BCD number";
const static std::string kSoundEffect = "Sound effect";
const static std::string kChoose3 = "Choose 3";
const static std::string kChoose2High = "Choose 2 high";
const static std::string kChoose2Low = "Choose 2 low";
const static std::string kChoose2Indented = "Choose 2 indented";
const static std::string kChooseItem = "Choose item";
const static std::string kNextAttractImage = "Next attract image";
const static std::string kBankMarker = "Bank marker (automatic)";
const static std::string kCrash = "Crash";

static const std::vector<TextElement> TextCommands = {
    TextElement(0x6B, "W", true, kWindowBorder),
    TextElement(0x6D, "P", true, kWindowPosition),
    TextElement(0x6E, "SPD", true, kScrollSpeed),
    TextElement(0x7A, "S", true, kTextDrawSpeed),
    TextElement(0x77, "C", true, kTextColor),
    TextElement(0x6A, "L", false, kPlayerName),
    TextElement(0x74, "1", false, kLine1Str),
    TextElement(0x75, "2", false, kLine2Str),
    TextElement(0x76, "3", false, kLine3Str),
    TextElement(0x7E, "K", false, kWaitForKey),
    TextElement(0x73, "V", false, kScrollText),
    TextElement(0x78, "WT", true, kDelayX),
    TextElement(0x6C, "N", true, kBCDNumber),
    TextElement(0x79, "SFX", true, kSoundEffect),
    TextElement(0x71, "CH3", false, kChoose3),
    TextElement(0x72, "CH2", false, kChoose2High),
    TextElement(0x6F, "CH2L", false, kChoose2Low),
    TextElement(0x68, "CH2I", false, kChoose2Indented),
    TextElement(0x69, "CHI", false, kChooseItem),
    TextElement(0x67, "IMG", false, kNextAttractImage),
    TextElement(0x80, kBankToken, false, kBankMarker),
    TextElement(0x70, "NONO", false, kCrash),
};

std::optional<TextElement> FindMatchingCommand(uint8_t b);

static const std::vector<TextElement> SpecialChars = {
    TextElement(0x43, "...", false, "Ellipsis …"),
    TextElement(0x4D, "UP", false, "Arrow ↑"),
    TextElement(0x4E, "DOWN", false, "Arrow ↓"),
    TextElement(0x4F, "LEFT", false, "Arrow ←"),
    TextElement(0x50, "RIGHT", false, "Arrow →"),
    TextElement(0x5B, "A", false, "Button Ⓐ"),
    TextElement(0x5C, "B", false, "Button Ⓑ"),
    TextElement(0x5D, "X", false, "Button ⓧ"),
    TextElement(0x5E, "Y", false, "Button ⓨ"),
    TextElement(0x52, "HP1L", false, "1 HP left"),
    TextElement(0x53, "HP1R", false, "1 HP right"),
    TextElement(0x54, "HP2L", false, "2 HP left"),
    TextElement(0x55, "HP3L", false, "3 HP left"),
    TextElement(0x56, "HP3R", false, "3 HP right"),
    TextElement(0x57, "HP4L", false, "4 HP left"),
    TextElement(0x58, "HP4R", false, "4 HP right"),
    TextElement(0x47, "HY0", false, "Hieroglyph ☥"),
    TextElement(0x48, "HY1", false, "Hieroglyph 𓈗"),
    TextElement(0x49, "HY2", false, "Hieroglyph Ƨ"),
    TextElement(0x4A, "LFL", false, "Link face left"),
    TextElement(0x4B, "LFR", false, "Link face right"),
};

std::optional<TextElement> FindMatchingSpecial(uint8_t b);

struct ParsedElement {
  TextElement Parent;
  uint8_t Value;
  bool Active = false;

  ParsedElement() = default;
  ParsedElement(const TextElement& textElement, uint8_t value)
      : Parent(textElement), Value(value), Active(true) {}
};

ParsedElement FindMatchingElement(const std::string& str);

std::string ParseTextDataByte(uint8_t value);

absl::StatusOr<MessageData> ParseSingleMessage(
    const std::vector<uint8_t>& rom_data, int* current_pos);

std::vector<std::string> ParseMessageData(
    std::vector<MessageData>& message_data,
    const std::vector<DictionaryEntry>& dictionary_entries);

constexpr int kTextData2 = 0x75F40;
constexpr int kTextData2End = 0x773FF;

// Reads all text data from the ROM and returns a vector of MessageData objects.
std::vector<MessageData> ReadAllTextData(uint8_t* rom, int pos = kTextData);

// Calls the file dialog and loads expanded messages from a BIN file.
absl::Status LoadExpandedMessages(std::string& expanded_message_path,
                                  std::vector<std::string>& parsed_messages,
                                  std::vector<MessageData>& expanded_messages,
                                  std::vector<DictionaryEntry>& dictionary);

}  // namespace editor
}  // namespace yaze

#endif  // YAZE_APP_EDITOR_MESSAGE_MESSAGE_DATA_H