/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   exec.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: marde-vr <marde-vr@42angouleme.fr>         +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/02/07 14:12:49 by tomoron           #+#    #+#             */
/*   Updated: 2024/03/25 19:01:25 by tomoron          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minishell.h"
#include <sys/wait.h>

int	exec(t_msh *msh, char **cmd_args, int i, int cmd_count)
{
	pid_t	pid;

	if (i != cmd_count - 1)
	{
		if (pipe(msh->fds[i]) == -1)
		{
			perror("pipe");
			ft_exit(msh, 1);
		}
	}
	pid = fork();
	if (pid == -1)
	{
		perror("fork");
		ft_exit(msh, 1);
	}
	if (pid == 0)
		child(msh, cmd_args, i);
	else
	{
		parent(msh, i, cmd_count);
		msh->pids[i] = pid;
		free(cmd_args);
	}
	return (0);
}

void	exec_command(t_msh *msh, int i, int cmd_count)
{
	g_return_code = 0;
	msh->fds[i] = ft_calloc(2, sizeof(int *));
	if (!msh->fds[i])
		ft_exit(msh, 1);
	if (first_is_in_type(msh))
	{
		get_in_type(msh, msh->cmds);
		if (!g_return_code)
			get_out_type(msh, msh->cmds);
	}
	else
	{
		get_out_type(msh, msh->cmds);
		if (!g_return_code)
			get_in_type(msh, msh->cmds);
	}
	if (!cmd_is_builtin(msh, msh->cmds->token))
		get_cmd_path(msh);
	//if(!g_return_code)
	exec(msh, get_cmd_args(msh), i, cmd_count);
	remove_command_from_msh(msh);
}

void	exec_commands(t_msh *msh)
{
	int	cmd_count;
	int	i;
	int	status;

	i = -1;
	if (!msh->cmds)
		return ;
	cmd_count = get_cmd_count(msh->cmds);
	msh->fds = ft_calloc(cmd_count, sizeof(int **));
	msh->pids = ft_calloc(cmd_count, sizeof(int *));
	if (!msh->pids || !msh->fds)
		ft_exit(msh, 1);
	while (++i < cmd_count)
		exec_command(msh, i, cmd_count);
	i = 0;
	while (i < cmd_count)
	{
		waitpid(msh->pids[i], &status, 0);
		i++;
	}
	if(!g_return_code && WIFEXITED(status))
		g_return_code = WEXITSTATUS(status);
	i = 0;
	while (i < cmd_count)
	{
		free(msh->fds[i]);
		msh->fds[i] = 0;
		i++;
	}
	free(msh->fds);
	msh->fds = 0;
	free(msh->pids);
	msh->pids = 0;
	signal(SIGINT, signal_handler_interactive);
	signal(SIGQUIT, signal_handler_interactive);
}