#include <magenta/debug/host.h>
#include <magenta/debug/packet.h>
#include <magenta/debug/util.h>

static enum mxdbg_status identify_kernel(
	struct mxdbg_host *host,
	const struct mxdbg_packet *req)
{
	struct mxdbg_packet_identify_kernel id = {0};
	mxdbg_packet_init(
		&id.id_base,
		sizeof id,
		MXDBG_PACKET_IDENTIFY_KERNEL,
		MXDBG_PACKET_F_RESPONSE);

	mxdbg_host_identify(
		host,
		MXDBG_IDENTITY_KERNEL_NAME,
		id.id_kernel_name,
		sizeof id.id_kernel_name);
	mxdbg_host_identify(
		host,
		MXDBG_IDENTITY_KERNEL_VERSION,
		id.id_kernel_version,
		sizeof id.id_kernel_version);
	mxdbg_host_identify(
		host,
		MXDBG_IDENTITY_KERNEL_ARCH,
		id.id_kernel_arch,
		sizeof id.id_kernel_arch);

	mxdbg_host_send(host, &id.id_base);

	return MXDBG_SUCCESS;
}

static enum mxdbg_status identify_task(
	struct mxdbg_host *host,
	const struct mxdbg_packet *packet)
{
	struct mxdbg_packet_identify_task *req
		= (struct mxdbg_packet_identify_task *)packet;
	struct mxdbg_packet_identify_task id = {0};
	id.id_base = *packet;
	mxdbg_host_recv_packet_data(host, &id.id_base);
	unsigned int tid = id.id_task;

	mxdbg_packet_init(
		&id.id_base,
		sizeof id,
		MXDBG_PACKET_IDENTIFY_TASK,
		MXDBG_PACKET_F_RESPONSE);

	mxdbg_host_identify_task(
		host,
		tid,
		MXDBG_IDENTITY_TASK_NAME,
		id.id_task_name,
		sizeof id.id_task_name);
	mxdbg_host_identify_task(
		host,
		tid,
		MXDBG_IDENTITY_TASK_PARENT,
		&id.id_parent,
		sizeof id.id_parent);
	mxdbg_host_identify_task(
		host,
		tid,
		MXDBG_IDENTITY_TASK_NR_THREADS,
		&id.id_thread_count,
		sizeof id.id_thread_count);

	size_t w;
	mxdbg_host_send(host, &id.id_base);
	debug_printf("debug: identify_task response sent");

	return MXDBG_SUCCESS;
}

static enum mxdbg_status resume(
	struct mxdbg_host *host,
	const struct mxdbg_packet *req)
{
	return mxdbg_host_resume(host);
}

enum mxdbg_status mxdbg_handle_request(
	struct mxdbg_host *host,
	const struct mxdbg_packet *req)
{
	switch (req->pkt_type) {
	case MXDBG_PACKET_IDENTIFY_KERNEL:
		return identify_kernel(host, req);
	case MXDBG_PACKET_IDENTIFY_TASK:
		return identify_task(host, req);
	case MXDBG_PACKET_RESUME:
		return resume(host, req);
	default:
		debug_printf(
			"debug: unrecognised packet 0x%02x",
			req->pkt_type);
		return MXDBG_ERR_NOT_SUPPORTED;
	}

	return MXDBG_SUCCESS;
}