#include "esh_deinit.h"

void EShExit(int exit_code) {
	EShDeinit();
	exit(exit_code);
}

void EShDeinit() {
	EShSaveConfigFile();
	EShSaveHistoryFile();
	EShDeinitInfo();
	printf("\nESh: Goodbye!\n");
}

void EShDeinitInfo() {
	// TO BE IMPLEMENTED
}

void EShSaveConfigFile() {
	FILE* file = fopen(esh_info_global->config_file_path, "w");
	if (!file) {
		printf("\nESh: error, cannot open config file %s, settings may not be saved...\n", esh_info_global->config_file_path);
		return;
	}

	fprintf(file, "history_path=%s\n", esh_info_global->history_file_path);
	fprintf(file, "history_limit=%d\n", esh_info_global->history_limit);
	fprintf(file, "max_active_jobs=%d\n", esh_info_global->max_jobs_number);
	fprintf(file, "max_command_length=%d\n", esh_info_global->max_command_length);

	fclose(file);
}

void EShSaveHistoryFile() {
	FILE* file = fopen(esh_info_global->history_file_path, "w");
	if (!file) {
		printf("\nESh: error, cannot open history file %s, commands may not be saved...\n", esh_info_global->history_file_path);
		return;
	}

	for (int i = 0; i < esh_info_global->history_command_list_size; ++i) {
		fprintf(file, "%s\n", esh_info_global->history_command_list[i]);
	}

	fclose(file);
}

void EShDeinitJob(EShJob* job) {
	if (!job)
		return;

	if (job->stdin_fd != -1) {
		close(job->stdin_fd);
		job->stdin_fd = -1;
	}

	if (job->stdout_fd != -1) {
		close(job->stdout_fd);
		job->stdout_fd = -1;
	}
	
	if (job->stderr_fd != -1) {
		close(job->stderr_fd);
		job->stderr_fd = -1;
	}

	free(job->command);

	for (int i = 0; i < esh_info_global->max_command_tokens; ++i) {
		if (job->command_tokens[i]) {
			free(job->command_tokens[i]);
		}
	}
	free(job->command_tokens);
}

void EShFreeJobsList(EShJob* jobs_list) {
	for (int i = 0; i < esh_info_global->max_jobs_number; ++i) {
		EShDeinitJob(jobs_list + i);
	} 
	free(jobs_list);
}