#include "vxBoot/cli.h"
#include "vxBoot/builtin.h"
#include "vxBoot/terminal.h"

#include <string.h>

//TODO: better API for the command-line parser

/* internal builtin list */
struct {
	const char *name;
	int (*f)(int argc, char **argv);
} cmd_list[] = {
	{.name = "ls",    &ls_main},
	{.name = "ld",    &ld_main},
	{.name = "hw",    &hw_main},
	{.name = "help",  &help_main},
	{.name = "log",   &log_main},
	{.name = NULL, NULL}
};

/* try to find the appropriate command */
static int (*check_cmd(char *cmd))(int, char**)
{
	for (int i = 0; cmd_list[i].name != NULL; ++i) {
		if (strcmp(cmd, cmd_list[i].name) != 0)
			continue;
		if (cmd_list[i].f == NULL)
			terminal_write("command exist but not implemented\n");
		return (cmd_list[i].f);
	}
	return (NULL);
}

void cli_main(void)
{
	int (*builtin)(int, char**);
	const char *usrline;
	char buff[128];
	char **argv;
	int argc;
	int ret;

	/* CLI loop */
	ret = 0;
	while (1) {
		/* get user command */
		usrline = (ret != 0) ? "/[%d]>" : "/>";
		terminal_write(usrline, ret);
		ret = 0;
		if (terminal_read(buff, 128) <= 1)
			continue;

		/* parse and try to find the command */
		if (cli_parser_strtotab(&argc, &argv, buff) != 0) {
			terminal_write("error when processing \"%s\"", buff);
			ret = 255;
			continue;
		}
		builtin = check_cmd(argv[0]);
		if (builtin == NULL) {
			terminal_write("command \"%s\" not found\n", argv[0]);
			ret = 127;
			continue;
		}

		/* execute the command and free'd allocated memories */
		ret = builtin(argc, argv);
		cli_parser_strtotab_quit(&argc, &argv);
	}
}