/*
Universidade de Brasilia
Instituto de Ciencias Exatas
Departamento de Ciencia da Computacao
Algoritmos e Programação de Computadores – 1/2016
Aluno(a): João Antonio da Rosa Marques
Matricula: 16/0031699
Turma: A
Versão do compilador: Apple LLVM Version 7.0.2 (clang-700.1.81)
Descricao: Menu e Opções do jogo Eliminaletras
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#define CLEAR "cls"
#else
#define CLEAR "clear"
#endif

int gamelines,gamecolunms;
char gameletters[11];
float basescore;

void play(){}

void ranking(){}

void Welcome(){
	printf("==================================\n=== Bem-vindo a Eleminaletras! ===\n==================================\n\n");
	return;
}

void Statement(){
	printf("Pressione <ENTER> para prosseguir...\n");
	return;
}

void Menu(){
	printf("====================================\n=== Eliminaletras MENU PRINCIPAL ===\n====================================\n\n");
	return;
}

void Options(){
	printf("1 - Jogar\n2 - Ranking\n3 - Configuracoes\n4 - Sair\n\nEscolha uma opcao: ");
	return;
}

void SettingsHeader(){
	printf("===========================================\n=== Eliminaletras MENU DE CONFIGURACOES ===\n===========================================\n\n");
	return;
}

void Settings(){
	printf("1 - Mudar caracteres: %s\n2 - Mudar linhas: %d\n3 - Mudar colunas: %d\n4 - Mudar pontuação base: %f\n5 - Menu Principal\n\nEscolha uma opcao: ",gameletters,gamelines,gamecolunms,basescore);
	return;
}

void Goodbye(){
	printf("=========================================\n=== Obrigado por jogar Eliminaletras! ===\n=========================================\n\n");
	return;
}

void ERRORSTATE(){
	printf("\nERROR\n\nPressione <ENTER> para retornar");
	return;
}

void writeSettings(){

	FILE *fp;
	char nomeEliminaLetras_settings[] = "EliminaLetras_settings.txt";

	fp=fopen(nomeEliminaLetras_settings, "w");

	fprintf(fp,"%s\n%d\n%d\n%f",gameletters,gamelines,gamecolunms,basescore);
	fclose(fp);

	return;
}

void readSettings(){

	int i=0,templetteramount=0;

	FILE *fp;
	char nomeEliminaLetras_settings[] = "EliminaLetras_settings.txt";

	fp=fopen(nomeEliminaLetras_settings, "r");

	fscanf(fp,"%s\n%d\n%d\n%f",gameletters,&gamelines,&gamecolunms,&basescore);

	while(gameletters[i]!='\0'){
		templetteramount++;
		i++;
	}

	if(templetteramount < 3 || templetteramount > 10){
		strcpy(gameletters,"OZXM");
	}

	if(gamelines < 3 || gamelines > 9 ){
		gamelines=6;
	}

	if(gamecolunms < 3 || gamecolunms > 9){
		gamecolunms=9;
	}

	if(basescore < 1 || basescore > 2){
		basescore=1.5;
	}

	if (fp==NULL){
		fclose(fp);
		fp=fopen(nomeEliminaLetras_settings,"w");
		fprintf(fp,"OZXM\n6\n9\n1.5");
	}

	fclose(fp);
	writeSettings();

	return;
 }


void changechars(){
	int i=0,letteramount=0;
	char setconf;

	printf("\nInsira os novos caracteres (min. 3, max. 10):");
	scanf("%s",gameletters);
	printf("\nConfirmar acao? (S/N) ");
	scanf("%c",&setconf);


		switch (setconf){

	 	case 'S':

			while(gameletters[i]!='\0'){
				letteramount++;
				i++;
			}

			letteramount=0;

			if(letteramount < 3 || letteramount > 10){
				system(CLEAR);
				SettingsHeader();
				ERRORSTATE();
				getchar();
				system(CLEAR);
				SettingsHeader();
				Settings();
				i=0;
				system(CLEAR);
				changechars();
			}

			else{
				writeSettings();
			}
		break;

		default:
			readSettings();
		}
		system(CLEAR);
	 	SettingsHeader();
		Settings();
	return;
}

void changelines(){
	char setconf;

	printf("\nInsira o número para a quantidade de linhas(min. 3, max. 9):");
	scanf("%d",&gamelines);
	printf("\nConfirmar acao? (S/N) ");

	scanf("%c",&setconf);

	switch (setconf){

	 	case 'S':

	 		if(gamelines < 3 || gamelines > 9){
				system(CLEAR);
				SettingsHeader();
				ERRORSTATE();
				getchar();
				system(CLEAR);
				SettingsHeader();
				Settings();
				changelines();
			}

			else{
				writeSettings();
			}
	 	break;

	 	default:
	 		readSettings();
	 	}
	 	system(CLEAR);
	 	SettingsHeader();
		Settings();
	 return;
}

void changecolunms(){
	char setconf;

	printf("\nInsira o número para a quantidade de colunas(min. 3, max. 9):");
	scanf("%d",&gamecolunms);
	printf("\nConfirmar acao? (S/N) ");

	scanf("%c",&setconf);


	switch (setconf){

	 	case 'S':

	 		if(gamecolunms < 3 || gamecolunms > 9){
				system(CLEAR);
				SettingsHeader();
				ERRORSTATE();
				getchar();
				system(CLEAR);
				SettingsHeader();
				Settings();
				changecolunms();
			}

			else{
				writeSettings();
			}
	 	break;

	 	default:
	 		readSettings();
	 	}
	 	system(CLEAR);
	 	SettingsHeader();
		Settings();
	 return;
}

void changebasescore(){
	char setconf;

	printf("\nInsira o número real para a pontuação base(min. 1, max. 2):");
	scanf("%f",&basescore);
	printf("\nConfirmar acao? (S/N) ");

	scanf("%c",&setconf);

	switch (setconf){

	 	case 'S':

	 		if(basescore > 1 || basescore < 2){
	 			writeSettings();
	 		}
			else{
				system(CLEAR);
				SettingsHeader();
				ERRORSTATE();
				getchar();
				system(CLEAR);
				SettingsHeader();
				Settings();
				changebasescore();
	 		}
	 	break;

	 	default:
	 		readSettings();
	 	}
	 	system(CLEAR);
	 	SettingsHeader();
		Settings();
	 return;
}

int main () {
	int letteramount,menuchoice,settingschoice;


	readSettings();
	writeSettings();

while(menuchoice!=5){

	Welcome();
	Statement();
	getchar();
	system(CLEAR);
	Menu();
	Options();

	scanf("%d",&menuchoice);
	getchar();

	switch (menuchoice){



		case 1 :
			system(CLEAR);
			Menu();
			printf("Em construcao!\n");
			getchar();
			system(CLEAR);
			Menu();
			Options();
			scanf("%d",&menuchoice);

		break;

		case 2 :
			system(CLEAR);
			Menu();
			printf("Em construcao!\n");
			getchar();
			system(CLEAR);
			Menu();
			Options();
			scanf("%d",&menuchoice);
		break;

		case 3 :
			system(CLEAR);
			SettingsHeader();
			Settings();
			scanf("%d",&settingschoice);

			switch (settingschoice) {


				case 1 :
					changechars();
					scanf("%d",&settingschoice);
				break;

				case 2 :
					changelines();
					scanf("%d",&settingschoice);
				break;

				case 3 :
					changecolunms();
					scanf("%d",&settingschoice);
				break;

				case 4 :
					changebasescore();
					scanf("%d",&settingschoice);
				break;

				case 5 :
					system(CLEAR);
					Menu();
					Options();
					scanf("%d",&menuchoice);
				break;

				default:
					system(CLEAR);
					SettingsHeader();
					ERRORSTATE();
					getchar();
					system(CLEAR);
					SettingsHeader();
					Settings();
					scanf("%d",&settingschoice);
			}

		case 4 :
			system(CLEAR);
			Goodbye();
			printf("Pressione <ENTER> para continuar...\n");
			getchar();
			system(CLEAR);
			return 0;
		break;

		default:
			system(CLEAR);
			Menu();
			ERRORSTATE();
			getchar();
			system(CLEAR);
			Menu();
			Options();
			scanf("%d",&menuchoice);
		}
	}


	system(CLEAR);
	Goodbye();
	printf("Pressione <ENTER> para continuar...\n");
	getchar();
	system(CLEAR);
	return 0;

}