/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   shell_loop.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/10/04 05:59:26 by lperrey           #+#    #+#             */
/*   Updated: 2021/11/02 13:48:36 by hulamy           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"

//static char	**tokens_list_to_argv(t_token *t); // temp test
void	sigint_handler(int signum); //tmp
void	sigquit_aka_eof_handler(int signum); //tmp

void	close_fd(t_cmd *cmd)
{
	if (cmd->fd_in != 0)
		close(cmd->fd_in);
	if (cmd->fd_out != 1)
		close(cmd->fd_out);
}

void	execute_cmd(char **envp, t_cmd **cmd_arr)
{
	pid_t	pid;
	pid_t	wpid;
	int		status;
	int		i;

	i = 0;
	while(cmd_arr[i])
	{
		pid = fork();
		if (pid == 0)
		{
			if (cmd_arr[i]->fd_in != 0)
				dup2(cmd_arr[i]->fd_in, STDIN_FILENO);
			if (cmd_arr[i]->fd_out != 1)
				dup2(cmd_arr[i]->fd_out, STDOUT_FILENO);
			close_fd(cmd_arr[i]);
			execve(cmd_arr[i]->argv[0], cmd_arr[i]->argv, envp);
		}
		else
			close_fd(cmd_arr[i]);
		i++;
	}
	// waitpid pour la derniere commande (pour '$?')
	while ((wpid = wait(&status)) > 0);
}

void	shell_loop(t_all *c)
{
	char	*line_input;

	line_input = NULL;
	while (1)
	{
		if (line_input)
			free(line_input);
		line_input = readline(c->prompt);
		if (line_input && *line_input)
		{
			add_history(line_input);
			c->token_list = input_to_tokens(line_input);

			// TEMP
			// A faire aprés être sortie du mode interactif
			// - Ignorer tout les signaux
			// - Remettre ori_termios
			c->signal_behaviour.sa_handler = SIG_IGN;
			sigaction(SIGINT, &c->signal_behaviour, NULL);
			sigaction(SIGQUIT, &c->signal_behaviour, NULL);
			tcsetattr(STDIN_FILENO, TCSANOW, &c->ori_termios);
			if (!fork())
			{
				char	*arg_test[3];

				arg_test[0] = ft_strdup("sleep");
				arg_test[1] = ft_strdup("3");
				arg_test[2] = NULL;
				sigaction(SIGQUIT, &c->ori_signal_behaviour, NULL);
				sigaction(SIGINT, &c->ori_signal_behaviour, NULL);
				execve("/bin/sleep", arg_test, c->envp);
			}
			else
			{
				int	wait_test;
				wait(&wait_test);
				c->signal_behaviour.sa_handler = sigint_handler;
				sigaction(SIGINT, &c->signal_behaviour, NULL);
				c->signal_behaviour.sa_handler = SIG_IGN;
				sigaction(SIGQUIT, &c->signal_behaviour, NULL);
				tcsetattr(STDIN_FILENO, TCSANOW, &c->interactive_termios);
			}


			
			// EXEC_PIPES_AND_CO()

			// temp placeholder
/* 			if (ft_strncmp(c->token_list->content, "env", 4) == 0)
				builtin_env(0, NULL, c);
			else if (ft_strncmp(c->token_list->content, "exit", 5) == 0)
				builtin_exit(0, NULL, c);
			else if (ft_strncmp(c->token_list->content, "echo", 5) == 0)
				builtin_echo(ft_lstsize((t_list *)c->token_list) + 1, tokens_list_to_argv(c->token_list), c);
			else
			{
				c->cmd_arr = parsing(c->token_list, c->envp);
				if (c->cmd_arr == NULL)
					ft_putstr_fd("Syntax KO:\n-----------\n", 1);
	//			else
	//				ft_putstr_fd("Syntax OK:\n-----------\n", 1);
	//			ft_putstr_fd("TOKENS LIST :\n-----------\n", 1);
	//			ft_lstprint((t_list *)c->token_list, 1);
				execute_cmd(c->envp, c->cmd_arr);
				ft_lstclear((t_list **)&c->token_list, free);
			} */
		}
		else if (!line_input)
			write(1, "\n", 1);
	}
}

/* static char	**tokens_list_to_argv(t_token *t) // temp test
{
	size_t	i;
	char	**argv;

	i = ft_lstsize((t_list *)t);
	argv = ft_calloc(i + 1, sizeof(char*));
	i = 0;
	while (t)
	{
		argv[i] = t->content;
		i++;
		t = t->next;
	}
	return (argv);
} */