#include "cache.h"
#include "promisor-remote.h"
#include "config.h"

static struct promisor_remote *promisors;
static struct promisor_remote **promisors_tail = &promisors;

static struct promisor_remote *promisor_remote_new(const char *remote_name)
{
	struct promisor_remote *r;

	if (*remote_name == '/') {
		warning(_("promisor remote name cannot begin with '/': %s"),
			remote_name);
		return NULL;
	}

	FLEX_ALLOC_STR(r, name, remote_name);

	*promisors_tail = r;
	promisors_tail = &r->next;

	return r;
}

static struct promisor_remote *promisor_remote_lookup(const char *remote_name,
						      struct promisor_remote **previous)
{
	struct promisor_remote *r, *p;

	for (p = NULL, r = promisors; r; p = r, r = r->next)
		if (!strcmp(r->name, remote_name)) {
			if (previous)
				*previous = p;
			return r;
		}

	return NULL;
}

static int promisor_remote_config(const char *var, const char *value, void *data)
{
	const char *name;
	int namelen;
	const char *subkey;

	if (parse_config_key(var, "remote", &name, &namelen, &subkey) < 0)
		return 0;

	if (!strcmp(subkey, "promisor")) {
		char *remote_name;

		if (!git_config_bool(var, value))
			return 0;

		remote_name = xmemdupz(name, namelen);

		if (!promisor_remote_lookup(remote_name, NULL))
			promisor_remote_new(remote_name);

		free(remote_name);
		return 0;
	}

	return 0;
}

static void promisor_remote_init(void)
{
	static int initialized;

	if (initialized)
		return;
	initialized = 1;

	git_config(promisor_remote_config, NULL);
}

struct promisor_remote *promisor_remote_find(const char *remote_name)
{
	promisor_remote_init();

	if (!remote_name)
		return promisors;

	return promisor_remote_lookup(remote_name, NULL);
}

int has_promisor_remote(void)
{
	return !!promisor_remote_find(NULL);
}