const { Client, Message, MessageEmbed } = require("discord.js");
module.exports = {
  name: "connect4",
  aliases: ["c4"],
  usage: "(User)",
  description: "Play a connect 4 game with a user",
  category: "Fun",
  /**
   * @param {Client} client
   * @param {Message} message
   * @param {String[]} args
   */
  run: async (client, message, args) => {
    const challenger = message.member;
    const oppenent = message.mentions.members.first();

    if (!oppenent) return client.err(message, "Fun", "connect4", 1);

    const question = await message.channel.send(
      `${oppenent}, would you like to play connect 4 against ${challenger}?`
    );

    ["✅", "❌"].forEach(async el => await question.react(el));

    const filter = (reaction, user) =>
      ["✅", "❌"].includes(reaction.emoji.name) && user.id === oppenent.id;

    const response = await question.awaitReactions(filter, { max: 1 });

    const reaction = response.first();

    if (reaction.emoji.name === "❌")
      return question.edit("Looks like they didn't want to play");
    else {
      await message.delete();
      await question.delete();

      const board = [
        ["⚪", "⚪", "⚪", "⚪", "⚪", "⚪", "⚪"],
        ["⚪", "⚪", "⚪", "⚪", "⚪", "⚪", "⚪"],
        ["⚪", "⚪", "⚪", "⚪", "⚪", "⚪", "⚪"],
        ["⚪", "⚪", "⚪", "⚪", "⚪", "⚪", "⚪"],
        ["⚪", "⚪", "⚪", "⚪", "⚪", "⚪", "⚪"],
        ["⚪", "⚪", "⚪", "⚪", "⚪", "⚪", "⚪"],
      ];

      const renderBoard = board => {
        let tempString = "";
        for (const boardSection of board) {
          tempString += `${boardSection.join("")}\n`;
        }

        tempString = tempString.concat("1️⃣2️⃣3️⃣4️⃣5️⃣6️⃣7️⃣");

        return tempString;
      };

      const initialState = renderBoard(board);

      const initial = new MessageEmbed().setDescription(initialState);

      const gameMessage = await message.channel.send(initial);

      ["1️⃣", "2️⃣", "3️⃣", "4️⃣", "5️⃣", "6️⃣", "7️⃣"].forEach(async el =>
        gameMessage.react(el)
      );

      const gameFilter = (reaction, user) =>
        ["1️⃣", "2️⃣", "3️⃣", "4️⃣", "5️⃣", "6️⃣", "7️⃣"].includes(
          reaction.emoji.name
        ) &&
        (user.id === oppenent.id || user.id === challenger.id);

      const gameCollector = gameMessage.createReactionCollector(gameFilter);

      const gameData = [
        { member: challenger, playerColor: "🔴" },
        { member: oppenent, playerColor: "🟡" },
      ];

      let player = 0;

      const checkFour = (a, b, c, d) =>
        a === b && b === c && c === d && a !== "⚪";

      const horizontalCheck = () => {
        for (let i = 0; i < 6; i++) {
          for (let j = 0; j < 4; j++) {
            if (
              checkFour(
                board[i][j],
                board[i][j + 1],
                board[i][j + 2],
                board[i][j + 3]
              )
            )
              return [
                board[i][j],
                board[i][j + 1],
                board[i][j + 2],
                board[i][j + 3],
              ];
          }
        }
      };

      const verticalCheck = () => {
        for (let j = 0; j < 7; j++) {
          for (let i = 0; i < 3; i++) {
            if (
              checkFour(
                board[i][j],
                board[i + 1][j],
                board[i + 2][j],
                board[i + 3][j]
              )
            )
              return [
                board[i][j],
                board[i + 1][j],
                board[i + 2][j],
                board[i + 3][j],
              ];
          }
        }
      };

      const diagonal1 = () => {
        for (let col = 0; col < 4; col++) {
          for (let row = 0; row < 3; row++) {
            if (
              checkFour(
                board[row][col],
                board[row + 1][col + 1],
                board[row + 2][col + 2],
                board[row + 3][col + 3]
              )
            )
              return [
                board[row][col],
                board[row + 1][col + 1],
                board[row + 2],
                board[col + 2],
                board[row + 3][col + 3],
              ];
          }
        }
      };

      const diagonal2 = () => {
        for (let col = 0; col < 4; col++) {
          for (let row = 5; row > 2; row--) {
            if (
              checkFour(
                board[row][col],
                board[row - 1][col + 1],
                board[row - 2][col + 2],
                board[row - 3][col + 3]
              )
            )
              return [
                board[row][col],
                board[row - 1][col + 1],
                board[row - 2][col + 2],
                board[row - 3][col + 3],
              ];
          }
        }
      };

      const tieCheck = () => {
        let count = 0;
        for (const el of board) {
          for (const string of el) {
            if (string !== "⚪") count++;
          }
        }
        if (count === 42) return true;
        else return false;
      };

      const checks = [horizontalCheck, verticalCheck, diagonal1, diagonal2];

      gameCollector.on("collect", (reaction, user) => {
        if (user.id === gameData[player].member.id) {
          const openSpaces = [];

          switch (reaction.emoji.name) {
            case "1️⃣":
              for (let i = 5; i > -1; i--) {
                if (board[i][0] === "⚪") openSpaces.push({ i, j: 0 });
              }
              if (openSpaces.length === 0)
                return message.channel.send(
                  `${gameData[player].member}, that column is already full. Choose a differnt one.`
                );
              else
                board[openSpaces[0].i][openSpaces[0].j] =
                  gameData[player].playerColor;

              break;
            case "2️⃣":
              for (let i = 5; i > -1; i--) {
                if (board[i][1] === "⚪") openSpaces.push({ i, j: 1 });
              }
              if (openSpaces.length === 0)
                return message.channel.send(
                  `${gameData[player].member}, that column is already full. Choose a differnt one.`
                );
              else
                board[openSpaces[0].i][openSpaces[0].j] =
                  gameData[player].playerColor;

              break;
            case "3️⃣":
              for (let i = 5; i > -1; i--) {
                if (board[i][2] === "⚪") openSpaces.push({ i, j: 2 });
              }
              if (openSpaces.length === 0)
                return message.channel.send(
                  `${gameData[player].member}, that column is already full. Choose a differnt one.`
                );
              else
                board[openSpaces[0].i][openSpaces[0].j] =
                  gameData[player].playerColor;
              break;
            case "4️⃣":
              for (let i = 5; i > -1; i--) {
                if (board[i][3] === "⚪") openSpaces.push({ i, j: 3 });
              }
              if (openSpaces.length === 0)
                return message.channel.send(
                  `${gameData[player].member}, that column is already full. Choose a differnt one.`
                );
              else
                board[openSpaces[0].i][openSpaces[0].j] =
                  gameData[player].playerColor;
              break;
            case "5️⃣":
              for (let i = 5; i > -1; i--) {
                if (board[i][4] === "⚪") openSpaces.push({ i, j: 4 });
              }
              if (openSpaces.length === 0)
                return message.channel.send(
                  `${gameData[player].member}, that column is already full. Choose a differnt one.`
                );
              else
                board[openSpaces[0].i][openSpaces[0].j] =
                  gameData[player].playerColor;
              break;
            case "6️⃣":
              for (let i = 5; i > -1; i--) {
                if (board[i][5] === "⚪") openSpaces.push({ i, j: 5 });
              }
              if (openSpaces.length === 0)
                return message.channel.send(
                  `${gameData[player].member}, that column is already full. Choose a differnt one.`
                );
              else
                board[openSpaces[0].i][openSpaces[0].j] =
                  gameData[player].playerColor;
              break;
            case "7️⃣":
              for (let i = 5; i > -1; i--) {
                if (board[i][6] === "⚪") openSpaces.push({ i, j: 6 });
              }
              if (openSpaces.length === 0)
                return message.channel.send(
                  `${gameData[player].member}, that column is already full. Choose a differnt one.`
                );
              else
                board[openSpaces[0].i][openSpaces[0].j] =
                  gameData[player].playerColor;
              break;
          }

          if (tieCheck()) {
            const TieEmbed = new MessageEmbed().setDescription(
              renderBoard(board)
            );
            gameCollector.stop("Tie Game");
            return gameMessage.edit(`It was a tie game!`, { embed: TieEmbed });
          }

          for (const func of checks) {
            const data = func();
            if (data) {
              const WinEmbed = new MessageEmbed().setDescription(
                renderBoard(board)
              );
              gameCollector.stop(`${gameData[player].member.id} won`);
              return gameMessage.edit(
                `${gameData[player].member} has won the game!`,
                { embed: WinEmbed }
              );
            }
          }

          player = (player + 1) % 2;

          const newEmbed = new MessageEmbed().setDescription(
            renderBoard(board)
          );
          gameMessage.edit("", { embed: newEmbed });
        }
      });
    }
  },
};