#include "anketa.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>

int count_students(struct student* students){
	int i;    	
	for(i=0; i<MAXSTUDENTS; i++){
		if(students[i].votes<=0){
			break;
			}
	}
return i;
}

int search(struct student* students,const char* name){
	int a; 
	for(int i=0; i<count_students(students); i++){
		a=strcmp(students[i].name,name);
		if(a==0){
			return i;
		}else{
			continue;
		}  
	} 
	return -1;
}

int add_student(struct student* students, const char* name, int votes){
	int index=search(students,name),pocet=count_students(students);
		if(index==-1&&pocet<MAXSTUDENTS){
			strcpy(students[pocet].name,name);
			students[pocet].votes=votes;
			return pocet;
		}else if(pocet<MAXSTUDENTS){
			students[index].votes+=votes;
			return index;
		}
	
	

 return -1;
}

int compare(const void* s1,const void* s2){
      	struct student* stud1=(struct student*)s1;
      	struct student* stud2=(struct student*)s2;
	 if(stud1->votes==stud2->votes){
		return 0;
		}else if(stud1->votes<stud2->votes){
		return 1;
		}
	return -1;
}

void sort_students(struct student* students){
	qsort(students,count_students(students),sizeof(struct student),compare);
}

void print_students(struct student* students){
	for(int i=0;i<count_students(students);i++){
		if(students[i].name!=NULL){
			printf("%s\n %d\n", students[i].name, students[i].votes);
		}
	}
}

void read_students(FILE* file,struct student* students){
	char meno[100];
	int body,result;
	while(fscanf(file,"%s",&meno[0])!=EOF){
	fscanf(file,"%d",&body);
	result= add_student(students,meno,body);
	if(result==-1){
		break;
	}	
	}
}