var express = require('express');
const worldgen = require("./worldgen.js")
const data = require("./tileinfo.js")
const util = require("./util.js")
const perlinScale = 3;

class Player {
  constructor(id, color, name) {
    this.name = name
    this.id = id;
    this.color = color;
    this.buildings = [0,0,0,0,0,0,0,0,0,0,0,0,0]
    this.gold = 100
    this.power = 100 + util.randomNumber(2,50)
  }

  kill(client) {
    if(game.players.length < 2){
      for(let x = 0; x < game.gridSize[0]; x++) {
        for(let y = 0; y < game.gridSize[1]; y++) {
          if (game.world.map[x][y].owner == this.id) {
            game.world.map[x][y].owner = null
            game.world.map[x][y].color = null
          }
        }
      }
    } else {
      console.log("KILL")
      let playerList = game.players.filter(obj => obj.id != this.id);
      while (playerList > 1) {
      for (let i = 1; i < playerList.length-1; i++) {
        if (playerList[util.randomNumber(0,i)].gold < playerList[i].gold) {
          delete playerList[i];
        }
      }
      playerlist = playerList.filter(obj => obj != null)
    }
      var player2 = playerList[0]
      this.transfer(player2)
    }
    sendMap(client)
    game.removePlayer(this.id);
  }

  transfer(player2) {
    player2.gold += this.gold
    player2.power += this.power
    for(let x = 0; x < game.gridSize[0]; x++) {
      for(let y = 0; y < game.gridSize[1]; y++) {
        if (game.world.map[x][y].owner == this.id) {
          game.world.map[x][y].owner = player2.id
          game.world.map[x][y].color = player2.color
        }
      }
    }

    for (i = 0; i < this.buildings.length; i++) {
      player2.buildings[i] += this.buildings[i]
    }

  }



}
class World {
  constructor(gridSize, perlinScale) {
    console.log(gridSize)
    this.map = worldgen.generateWorld(gridSize, perlinScale)
  }

  // Determine what method of clicking is to be used by player
  click(structure, x, y, client){
    const player = game.getPlayerByID(client.id);
    //Build Mode
    if (this.map[x][y].owner == player.id) {
      this.placeStructure(structure, x, y, player, client)
    }
    //Claim Mode
    if (this.map[x][y].owner == null) {
      this.claimLand(x, y, player, client)
    }

    if (this.map[x][y].owner != null && this.map[x][y].owner != player.id) {
    //Attack Mode
    }
  }

  // Function for placing buildings on land
  placeStructure(structure, x, y, player, client) {
    // Get info for the structure desired to be built from databank
    const strucInfo = data.structureTypes[structure]
    // Get the tile object the structure is to be built upon
    const tileOfInterest = this.map[x][y];
    // get info for the tile the structure is to be built upon from databank
    const tileInfo = data.tileTypes[tileOfInterest.type]
    const cost = strucInfo.buildPrice + tileInfo.buildPrice;

    if (
      // Check if the structure is valid to be built
      strucInfo.buildable == true
      // Check if player is still under building limit for structure
      && player.buildings[structure] < strucInfo.maxQuantity
      // Ensure no other builings are already built in this tile
      && tileOfInterest.structure == 0
      // Check to see if the structure can be built on the type of tile
      && strucInfo.buildableOn.includes(tileOfInterest.type)
      // Check if player has enough gold to build this
      && player.gold > cost
    ) {
      // Update tile on map
      this.map[x][y].structure = structure

      // Increment building count for this structure
      player.buildings[structure] ++;

      // Charge player for cost of structure
      player.gold -= cost;

      sendMap(client)
    }
  }

  claimLand(x, y, player, client) {
    const tileOfInterest = this.map[x][y];

    if (data.structureTypes[tileOfInterest.structure].claimable == true) {
    this.map[x][y].owner = player.id
    this.map[x][y].color = player.color
    sendMap(client)
    }
  }


}

function sendMap(client) {
  client.broadcast.emit('sync',{world: game.world.map})
  client.emit('sync',{world: game.world.map})
}

class Game {
  constructor(gridSize) {
    this.players = [];
    this.world = new World(gridSize, perlinScale);
    this.gridSize = gridSize
  }

  addPlayer(id, name) {
    var color
    switch(util.randomNumber(1,4)) {
      case 1:
        color = "red";
      break;

      case 2:
        color = "aquamarine";
      break;

      case 3:
        color = "green";
      break;

      case 4:
        color = "yellow";
      break;
    }
    const player = new Player(id, color, name);
    this.players.push(player);
    console.log(player.name)
  }

  removePlayer(id) {
    this.players = this.players.filter(obj => obj.id != id);
    console.log("removed player - " + id)
  }

  getPlayerByID(id) {
    const player = this.players.filter(obj => obj.id == id)[0]
    return player
  }

}
var game = new Game([18, 18]);


var app = express() //Static resources server
app.use(express.static(__dirname + '/www/'));var server = app.listen(8082, function () {
    var port = server.address().port;
    console.log('Server running at port %s', port);
});

var io = require('socket.io')(server);/* Connection events */
io.on('connection', function(client) {
    console.log('User connected');
    client.emit('gameVars', {gridSize: game.gridSize, world: game.world.map})



    client.on('disconnect', function(){
      console.log(client.id + ' disconnected.')
      game.getPlayerByID(client.id).kill(client)
      // client.broadcast.emit('playerList', game.players)
    })

    client.on('joinGame', function(data){
        console.log(game.players)
        console.log(client.id + ' joined the game');
        game.addPlayer(client.id, data.name);
        // client.broadcast.emit('playerList', game.players)
        // client.emit('playerList', game.players)
    })
    client.on('leaveGame', function(tank){
      console.log(client.id + ' disconnected.')
      // game.getPlayerByID(cliend.id).kill()
      game.getPlayerByID(client.id).kill(client)
      // client.broadcast.emit('playerList', game.players)
    })

      client.on('clickCanvas', function(data){
        const xu = util.clamp(data.tilePosition[0], 0, game.gridSize[0])
        const yu = util.clamp(data.tilePosition[1], 0, game.gridSize[1])
        // game.world.map[xu][yu].structure = data.structure
          game.world.click(data.structure, xu, yu, client)
        // game.world.map[xu][yu].owner = game.getPlayerByID(client.id).color;
        // client.broadcast.emit('sync',{world: game.world.map})
        // client.emit('sync',{world: game.world.map})
      })


  });