#include <bshell/command/alias.h>
#include <bshell/command/command.h>
#include <bshell/status.h>
#include <fx/reflection/function.h>
#include <fx/string.h>
#include <fx/vector.h>

struct bshell_alias_p {
};

static void init(fx_object *obj, void *priv)
{
}

enum bshell_status bshell_alias_get_callable_name(
	const bshell_alias *alias,
	fx_string *out)
{
	bshell_alias_class *c
		= fx_object_get_interface(alias, BSHELL_TYPE_ALIAS);
	if (!c) {
		return BSHELL_ERR_NOT_SUPPORTED;
	}

	const char *callable_name = c->a_callable_name;
	if (c->a_get_callable_name) {
		callable_name = c->a_get_callable_name(alias);
	}

	if (callable_name) {
		fx_string_append_cstr(out, callable_name);
	}

	return BSHELL_SUCCESS;
}

enum bshell_status bshell_alias_get_target_name(
	const bshell_alias *alias,
	fx_string *out)
{
	bshell_alias_class *c
		= fx_object_get_interface(alias, BSHELL_TYPE_ALIAS);
	if (!c) {
		return BSHELL_ERR_NOT_SUPPORTED;
	}

	const char *target_name = c->a_target_name;
	if (c->a_get_target_name) {
		target_name = c->a_get_target_name(alias);
	}

	if (target_name) {
		fx_string_append_cstr(out, target_name);
	}

	return BSHELL_SUCCESS;
}

static enum bshell_status get_callable_name_static(
	const fx_type *ty,
	fx_string *out)
{
	bshell_alias_class *c = fx_type_get_interface(ty, BSHELL_TYPE_ALIAS);
	if (!c) {
		return BSHELL_ERR_NOT_SUPPORTED;
	}

	if (c->a_callable_name) {
		fx_string_append_cstr(out, c->a_callable_name);
	}

	return BSHELL_SUCCESS;
}

static enum bshell_status get_description(
	const bshell_command *cmd,
	fx_string *out)
{
	bshell_alias_class *c = fx_object_get_interface(cmd, BSHELL_TYPE_ALIAS);
	if (!c) {
		return BSHELL_ERR_NOT_SUPPORTED;
	}

	const char *callable_name = c->a_callable_name;
	if (c->a_get_callable_name) {
		callable_name = c->a_get_callable_name(cmd);
	}

	const char *target_name = c->a_target_name;
	if (c->a_get_target_name) {
		target_name = c->a_get_target_name(cmd);
	}

	if (!callable_name || !target_name) {
		return BSHELL_ERR_NOT_SUPPORTED;
	}

	fx_string_append_cstr(out, callable_name);
	fx_string_append_cstr(out, " -> ");
	fx_string_append_cstr(out, target_name);
	return BSHELL_SUCCESS;
}

enum bshell_status get_description_static(const fx_type *ty, fx_string *out)
{
	return BSHELL_SUCCESS;
}

FX_TYPE_CLASS_BEGIN(bshell_alias)
	FX_TYPE_VTABLE_INTERFACE_BEGIN(fx_object, FX_TYPE_OBJECT)
		FX_INTERFACE_ENTRY(to_string) = NULL;
	FX_TYPE_VTABLE_INTERFACE_END(fx_object, FX_TYPE_OBJECT)

	FX_TYPE_VTABLE_INTERFACE_BEGIN(bshell_command, BSHELL_TYPE_COMMAND)
		FX_INTERFACE_ENTRY(c_command_type) = "Alias";
		FX_INTERFACE_ENTRY(c_get_callable_name)
			= bshell_alias_get_callable_name;
		FX_INTERFACE_ENTRY(c_get_callable_name_static)
			= get_callable_name_static;
		FX_INTERFACE_ENTRY(c_get_description) = get_description;
		FX_INTERFACE_ENTRY(c_get_description_static)
			= get_description_static;
	FX_TYPE_VTABLE_INTERFACE_END(bshell_command, BSHELL_TYPE_COMMAND)
FX_TYPE_CLASS_END(bshell_alias)

FX_TYPE_DEFINITION_BEGIN(bshell_alias)
	FX_TYPE_ID(0x1736c10e, 0xebe6, 0x4ba5, 0x83d9, 0x5da3b7dc706c);
	FX_TYPE_FLAGS(FX_TYPE_F_ABSTRACT);
	FX_TYPE_NAME("bshell.runtime.alias");
	FX_TYPE_EXTENDS(BSHELL_TYPE_COMMAND);
	FX_TYPE_CLASS(bshell_alias_class);
	FX_TYPE_INSTANCE_INIT(init);
	FX_TYPE_INSTANCE_PRIVATE(struct bshell_alias_p);
FX_TYPE_DEFINITION_END(bshell_alias)