#include <cs50.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>

// Max number of candidates
#define MAX 9

// Candidates have name and vote count
typedef struct
{
    string name;
    int votes;
}
candidate;

// Array of candidates
candidate candidates[MAX];


// Number of candidates
int candidate_count;

// Function prototypes
bool vote(string name);
void print_winner(void);

int main(int argc, string argv[])
{
    // Check for invalid usage
    if (argc < 2)
    {
        printf("Usage: plurality [candidate ...]\n");
        return 1;
    }

    // Populate array of candidates
    candidate_count = argc - 1;
    if (candidate_count > MAX)
    {
        printf("Maximum number of candidates is %i\n", MAX);
        return 2;
    }
    for (int i = 0; i < candidate_count; i++)
    {
        candidates[i].name = argv[i + 1];
        candidates[i].votes = 0;
    }

    int voter_count = get_int("Number of voters: ");

    // Loop over all voters
    for (int i = 0; i < voter_count; i++)
    {
        string name = get_string("Vote: ");

        // Check for invalid vote
        if (!vote(name))
        {
            printf("Invalid vote.\n");
        }
    }

    // Display winner of election
    print_winner();
}

// Update vote totals given a new vote
bool vote(string name)
{
    int y;
    bool exist = false;
    for (y = 0; y < candidate_count; y++)
    {
        if (strcmp(name, candidates[y].name) == 0)
        {
            exist = true;
            candidates[y].votes += 1;
            return true;

        }


    }
    return false;



}

// Print the winner (or winners) of the election
void print_winner(void)
{

    int swap_counter = -1;

    string winning_candidate = "";

    int winning_votes;

    if (swap_counter != 0)

    {

        for (int i = candidate_count; i > 0; i--)

        {

            if (candidates[i].votes < candidates[i - 1].votes)

            {

                swap_counter = 0;

                candidates[i] = candidates[i - 1];

                candidates[i - 1] = candidates[i];

                winning_votes = candidates[i].votes;

                swap_counter++;

            }

        }

    }

    for (int i = 0; i < candidate_count; i++)

    {

        if (winning_votes == candidates[i].votes)

        {

            winning_candidate = candidates[i].name;

            printf("%s\n", winning_candidate);

        }

    }

    return;

}