#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include "common.h"

// This part is not strictly libgit2-dependent, but you can use this

// as a starting point for a git-like tool

struct {

	char *name;

	git_cb fn;

} commands[] = {

	{"ls-remote", ls_remote},

	{"fetch", fetch},

	{"clone", do_clone},

	{"index-pack", index_pack},

	{ NULL, NULL}

};

static int run_command(git_cb fn, int argc, char **argv)

{

	int error;

	git_repository *repo;

	// Before running the actual command, create an instance of the local

	// repository and pass it to the function.

	error = git_repository_open(&repo, ".git");

	if (error < 0)

		repo = NULL;

	// Run the command. If something goes wrong, print the error message to stderr

	error = fn(repo, argc, argv);

	if (error < 0) {

		if (giterr_last() == NULL)

			fprintf(stderr, "Error without message");

		else

			fprintf(stderr, "Bad news:\n %s\n", giterr_last()->message);

	}

	if(repo)

		git_repository_free(repo);

	return !!error;

}

int main(int argc, char **argv)

{

	int i;

	int return_code = 1;

	if (argc < 2) {

		fprintf(stderr, "usage: %s <cmd> [repo]\n", argv[0]);

		exit(EXIT_FAILURE);

	}

	git_libgit2_init();

	for (i = 0; commands[i].name != NULL; ++i) {

		if (!strcmp(argv[1], commands[i].name)) {

			return_code = run_command(commands[i].fn, --argc, ++argv);

			goto shutdown;

		}

	}

	fprintf(stderr, "Command not found: %s\n", argv[1]);

shutdown:

	git_libgit2_shutdown();

	return return_code;

}