#include <iostream>

using namespace std;

#define NUMTEAMS 4
#define NUMMATCHES 6

void setMatch(int* matches, int team1, int team2);
bool isValidMachisValidMach(int* matches, int team1, int team2);

int main() {
  int favorite_team = 0;
  cout << "which is your favorite team? (1, 2, 3, or 4)" << endl;
  cin >> favorite_team;
  while(favorite_team < 1 || favorite_team > 4) {
    cout << "the number you gave is out of range" << endl;
    cout << " which is your favorite team? (1, 2, 3, or 4)" << endl;
    cin >> favorite_team;
  }

  int num_games_already_played = 0;
  cout << "how many games have already been played? (0-5)" << endl;
  cin >> num_games_already_played;
  while(num_games_already_played < 0 || num_games_already_played > 5) {
    cout << "the number you gave is out of range" << endl;
    cout << "how many games have already been played? (0-5)" << endl;
    cin >> num_games_already_played;
  }

  int team_points[NUMTEAMS];
  for(int i = 0; i < NUMTEAMS; i++) {
    team_points[i] = 0;
  }

  int matches[NUMMATCHES];
  for(int i = 0; i < NUMMATCHES; i++) {
    matches[i] = 0;
  }

  for(int i = 0; i < num_games_already_played; i++) {
    cout << "enter the game results for game " << i + 1 << endl;
    cout << "([first team] [second team] [first team score] [second team score])" << endl;
    int team1 = 0;
    int team2 = 0;
    int team1_score = 0;
    int team2_score = 0;

    cin >> team1;
    cin >> team2;
    cin >> team1_score;
    cin >> team2_score;

    bool valid_team_input = (team1 >= 1 && team1 <= 4 && team2 >= 1 && team2 <= 4 && team1 < team2);
    bool valid_team_score_input = (team1_score >= 0 && team2_score >= 0);
    bool valid_match = isValidMach(matches, team1, team2);

    while(!valid_team_input || !valid_team_score_input || !valid_match) {
      cout << "invalid input, please re-enter the game results for game " << i + 1 << endl;
      cout << "([first team] [second team] [first team score] [second team score])" << endl;

      cin >> team1;
      cin >> team2;
      cin >> team1_score;
      cin >> team2_score;

      valid_team_input = (team1 >= 1 && team1 <= 4 && team2 >= 1 && team2 <= 4 && team1 < team2);
      valid_team_score_input = (team1_score >= 0 && team2_score >= 0);
      valid_match = isValidMach(matches, team1, team2);
    }

    if(team1_score > team2_score) {
      team_points[team1] += 3;
      team_points[team2] += 0;
    }
    else if(team2_score > team1_score) {
      team_points[team1] += 0;
      team_points[team2] += 3;
    }
    else { //tie
      team_points[team1] += 1;
      team_points[team2] += 1;
    }

    setMatch(matches, team1, team2);
  }

  int num_games_left = 6 - num_games_already_played;

  //possible_outcomes == 3 to the power of num_games_left (3 possible outcomes per game for the number of games left)
  int possible_outcomes = 0;
  for(int i = 0; i < num_games_left; i++) {
    possible_outcomes *= 3;
  }

  //calculate outcomes in which x team wins


  return 0;
}

void setMatch(int* matches, int team1, int team2) {
  if(team1 == 1) {
    if(team2 == 2) {
      matches[0] = 1;
    }
    else if(team2 == 3) {
      matches[1] = 1;
    }
    else { //team2 == 4
      matches[2] = 1;
    }
  }
  else if(team1 == 2) {
    if(team2 == 3) {
      matches[3] = 1;
    }
    else { //team2 == 4
      matches[4] = 1;
    }
  }
  else { //team1 == 3
    matches[5] = 1;
}

bool isValidMach(int* matches, int team1, int team2) {
  if(team1 == 1) {
    if(team2 == 2) {
      return matches[0] == 0;
    }
    else if(team2 == 3) {
      return matches[1] == 0;
    }
    else { //team2 == 4
      return matches[2] == 0;
    }
  }
  else if(team1 == 2) {
    if(team2 == 3) {
      return matches[3] == 0;
    }
    else { //team2 == 4
      return matches[4] == 0;
    }
  }
  else { //team1 == 3
    return matches[5] == 0;
  }
}