'use strict';

const playerArrayContains = require('./util').playerArrayContains;

const parseWarLog = (lineArray, war) => {
  const nameToLongError = 'Error: ENAMETOOLONG: name too long, open \'';
  const stats = {
    war: war,
    clean: [],
    budget: [],
    points: [],
    kills: [],
    respawn: [],
    revive: [],
    flag: [],
    transport: [],
    players: []
  };

  const addPlayersIfNotExists = (inputPlayers) => {
    inputPlayers.forEach(player => {
      if (player && player.name && player.fraction && !playerArrayContains(stats.players, player)) {
        player['warId'] = war._id;
        stats.players.push(player);
      }
    })
  };

  lineArray.some(line => {
    /**
     * sanitize nameTooLongError coming up in first line
     */
    if (line.includes(nameToLongError)) {
      line = line.substring(line.indexOf(nameToLongError) + nameToLongError.length);
    }

    /**
     * KILLS
     */
    if (line.includes('Abschuss') && !line.includes('Fahrzeug')) {
      stats.clean.push(line);
      const shooterString = line.substring(line.lastIndexOf(' von: ') + 6, line.lastIndexOf('. :OPT LOG END'));
      const shooter = getPlayerAndFractionFromString(shooterString);
      const targetString = line.substring(line.lastIndexOf(' || ') + 4, line.lastIndexOf(' von:'));
      const target = getPlayerAndFractionFromString(targetString);

      stats.kills.push({
        war: war._id,
        time: getFullTimeDate(war.date, line.split(' ')[5]),
        shooter: shooter ? shooter.name : null,
        target: target.name,
        friendlyFire: shooter ? target.fraction === shooter.fraction : false,
        fraction: shooter ? shooter.fraction : 'NONE'
      });

      addPlayersIfNotExists([shooter, target]);
    }

    /**
     * BUDGET
     */
    if (line.includes('Budget')) {
      stats.clean.push(line);
      const budg = line.split(' ');
      if (line.includes('Endbudget')) {
        stats.war['endBudgetBlufor'] = transformMoneyString(budg[11]);
        stats.war['endBudgetOpfor'] = transformMoneyString(budg[14]);
        war.endDate = new Date(budg[0].substr(0, budg[0].length - 1).split('/').join('-') + 'T0' + budg[5]);
      } else if (line.includes('Startbudget')) {
        stats.war.date = new Date(budg[0].substr(0, budg[0].length - 1).split('/').join('-') + 'T22:00:00.000');
        stats.war['budgetBlufor'] = transformMoneyString(budg[11]);
        stats.war['budgetOpfor'] = transformMoneyString(budg[14]);
      } else {
        stats.budget.push(getBudgetEntry(budg, war._id, war.date));
      }
    }

    /**
     * FLAG
     */
    if (line.includes('Fahne')) {
      stats.clean.push(line);
      const playerName = line.substring(line.lastIndexOf('t von ') + 6, line.lastIndexOf(' :OPT LOG END'));
      const flagFraction = line.includes('NATO Flagge') ? 'BLUFOR' : 'OPFOR';
      const capture = !!line.includes('Flagge erobert');

      stats.flag.push({
        war: war._id,
        time: getFullTimeDate(war.date, line.split(' ')[5]),
        player: playerName,
        flagFraction: flagFraction,
        capture: capture
      });
    }

    /**
     * POINTS
     */
    if (line.includes('Punkte')) {
      stats.clean.push(line);
      const pt = line.split(' ');

      if (line.includes('Endpunktestand')) {
        stats.war['ptBlufor'] = parseInt(pt[11]);
        stats.war['ptOpfor'] = parseInt(pt[14].slice(0, -1));
        return true;
      } else {
        stats.points.push(getPointsEntry(pt, line, war._id, war.date))
      }
    }

    /**
     * RESPAWN
     */
    if (line.includes('Respawn')) {
      stats.clean.push(line);
      const resp = line.split(' ');
      const playerName = line.substring(line.lastIndexOf('Spieler:') + 9, line.lastIndexOf('-') - 1);
      stats.respawn.push(getRespawnEntry(resp, playerName, war._id, war.date));
    }

    /**
     * REVIVE
     */
    if (line.includes('Revive')) {
      stats.clean.push(line);
      const stabilized = !!line.includes('stabilisiert');
      const medicName = line.substring(line.lastIndexOf('wurde von ') + 10,
        line.lastIndexOf(stabilized ? ' stabilisiert' : ' wiederbelebt'));
      const medic = getPlayerAndFractionFromString(medicName);
      const patientName = line.substring(line.lastIndexOf('|| ') + 3, line.lastIndexOf(' wurde von'));
      const patient = getPlayerAndFractionFromString(patientName);

      stats.revive.push({
        war: war._id,
        time: getFullTimeDate(war.date, line.split(' ')[5]),
        stabilized: stabilized,
        medic: medic.name,
        patient: patient.name,
        fraction: medic.fraction
      });

      addPlayersIfNotExists([medic, patient]);
    }

    /**
     * TRANSPORT
     */
    if (line.includes('Transport ||')) {
      stats.clean.push(line);
      const driverString = line.substring(line.lastIndexOf('wurde von ') + 10, line.lastIndexOf(' eingeflogen'));
      const driver = getPlayerAndFractionFromString(driverString);
      const passengerString = line.substring(line.lastIndexOf('|| ') + 3, line.lastIndexOf(' wurde von'));
      const passenger = getPlayerAndFractionFromString(passengerString);
      const distance = parseInt(line.substring(line.lastIndexOf('eingeflogen (') + 13, line.lastIndexOf('m)') - 1));

      stats.transport.push({
        war: war._id,
        time: getFullTimeDate(war.date, line.split(' ')[5]),
        driver: driver.name,
        passenger: passenger ? passenger.name : null,
        fraction: driver.fraction,
        distance: distance
      });

      addPlayersIfNotExists([driver, passenger]);
    }
  });

  for (let i = 0; i < stats.players.length; i++) {
    const playerName = stats.players[i].name;
    stats.players[i]['respawn'] = stats.respawn.filter(res => res.player === playerName).length;
    stats.players[i]['kill'] = stats.kills.filter(kill => kill.shooter === playerName && !kill.friendlyFire).length;
    stats.players[i]['friendlyFire'] = stats.kills.filter(kill => kill.shooter === playerName && kill.friendlyFire).length;
    stats.players[i]['death'] = stats.kills.filter(kill => kill.target === playerName).length;
    stats.players[i]['revive'] = stats.revive.filter(rev => rev.medic === playerName && !rev.stabilized).length;
    stats.players[i]['flagTouch'] = stats.flag.filter(flag => flag.player === playerName).length;
    stats.players[i]['sort'] = stats.players[i]['kill'] + stats.players[i]['revive'] + stats.players[i]['flagTouch']
      - stats.players[i]['friendlyFire'] - stats.players[i]['death'] - stats.players[i]['respawn']
  }

  stats.war.playersBlufor = stats.players.filter(player => player.fraction === 'BLUFOR').length;
  stats.war.playersOpfor = stats.players.filter(player => player.fraction === 'OPFOR').length;

  return stats;
};

const getRespawnEntry = (respawn, playerName, warId, warDate) => {
  return {
    war: warId,
    time: getFullTimeDate(warDate, respawn[5]),
    player: playerName
  }
};

const getPointsEntry = (pt, line, warId, warDate) => {
  return {
    war: warId,
    time: getFullTimeDate(warDate, pt[5]),
    ptBlufor: parseInt(pt[12]),
    ptOpfor: parseInt(pt[15].slice(0, -1)),
    fraction: line.includes('no Domination') ? 'NONE' : line.includes('NATO +1') ? 'BLUFOR' : 'OPFOR'
  }
};

const getBudgetEntry = (budg, warId, warDate) => {
  return {
    war: warId,
    time: getFullTimeDate(warDate, budg[5]),
    fraction: budg[9] === 'NATO' ? 'BLUFOR' : 'OPFOR',
    oldBudget: transformMoneyString(budg[11]),
    newBudget: transformMoneyString(budg[14])
  }
};

const getPlayerAndFractionFromString = (nameAndFractionString) => {
  const nameArray = nameAndFractionString.split(' ');
  const fraction = nameArray[nameArray.length - 1] !== '(ENEMY)' ? nameArray[nameArray.length - 1] === '(WEST)' ? 'BLUFOR' : 'OPFOR' : undefined;
  const name = nameAndFractionString.substring(0, nameAndFractionString.indexOf(nameArray[nameArray.length - 1]) - 1);
  // do not return player for 'Selbstverschulden' or 'Error: No unit'
  if (name && name !== 'Error: No unit') {
    return {name: name, fraction: fraction};
  }
};

const transformMoneyString = (budgetString) => {
  if (!budgetString.includes('e+')) {
    return parseInt(budgetString);
  }
  const budget = budgetString.split('e+');
  return Math.round(parseFloat(budget[0]) * Math.pow(10, parseInt(budget[1])));
};

const getFullTimeDate = (date, timeString) => {
  const returnDate = new Date(date);
  const time = timeString.split(':');
  returnDate.setHours(time[0]);
  returnDate.setMinutes(time[1]);
  return returnDate;
};

module.exports = parseWarLog;