//---------------------------------------------------------------------------
//
// SCSI Target Emulator RaSCSI Reloaded
// for Raspberry Pi
//
// Copyright (C) 2022 Uwe Seimet
//
//---------------------------------------------------------------------------

#include "mocks.h"
#include "shared/rascsi_exceptions.h"
#include <filesystem>
#include <fstream>

using namespace std;
using namespace filesystem;

void ScsiCdTest_SetUpModePages(map<int, vector<byte>>& pages)
{
	EXPECT_EQ(7, pages.size()) << "Unexpected number of mode pages";
	EXPECT_EQ(12, pages[1].size());
	EXPECT_EQ(24, pages[3].size());
	EXPECT_EQ(24, pages[4].size());
	EXPECT_EQ(12, pages[8].size());
	EXPECT_EQ(8, pages[13].size());
	EXPECT_EQ(16, pages[14].size());
	EXPECT_EQ(30, pages[48].size());
}

TEST(ScsiCdTest, Inquiry)
{
	TestInquiry(SCCD, device_type::CD_ROM, scsi_level::SCSI_2, "RaSCSI  SCSI CD-ROM     ", 0x1f, true);
}

TEST(ScsiCdTest, SetUpModePages)
{
	map<int, vector<byte>> pages;
	const unordered_set<uint32_t> sector_sizes;
	MockSCSICD cd(0, sector_sizes);

	// Non changeable
	cd.SetUpModePages(pages, 0x3f, false);
	ScsiCdTest_SetUpModePages(pages);

	// Changeable
	pages.clear();
	cd.SetUpModePages(pages, 0x3f, true);
	ScsiCdTest_SetUpModePages(pages);
}

TEST(ScsiCdTest, Open)
{
	const unordered_set<uint32_t> sector_sizes;
	MockSCSICD cd_iso(0, sector_sizes);
	MockSCSICD cd_cue(0, sector_sizes);
	MockSCSICD cd_raw(0, sector_sizes);
	MockSCSICD cd_physical(0, sector_sizes);

	EXPECT_THROW(cd_iso.Open(), io_exception) << "Missing filename";

	path filename = CreateTempFile(2047);
	cd_iso.SetFilename(string(filename));
	EXPECT_THROW(cd_iso.Open(), io_exception) << "ISO CD-ROM image file size too small";
	remove(filename);

	filename = CreateTempFile(2* 2048);
	cd_iso.SetFilename(string(filename));
	cd_iso.Open();
	EXPECT_EQ(2, cd_iso.GetBlockCount());
	remove(filename);

	filename = CreateTempFile(0);
	ofstream out;
	out.open(filename);
	array<char, 4> cue = { 'F', 'I', 'L', 'E' };
	out.write(cue.data(), cue.size());
	out.close();
	resize_file(filename, 2 * 2048);
	cd_cue.SetFilename(string(filename));
	EXPECT_THROW(cd_cue.Open(), io_exception) << "CUE CD-ROM files are not supported";

	filename = CreateTempFile(0);
	out.open(filename);
	array<char, 16> header;
	header.fill(0xff);
	header[0] = 0;
	header[11] = 0;
	out.write(header.data(), header.size());
	out.close();
	resize_file(filename, 2 * 2535);
	cd_raw.SetFilename(string(filename));
	EXPECT_THROW(cd_raw.Open(), io_exception) << "Illegal raw ISO CD-ROM header";
	header[15] = 0x01;
	filename = CreateTempFile(0);
	out.open(filename);
	out.write(header.data(), header.size());
	out.close();
	resize_file(filename, 2 * 2535);
	cd_raw.SetFilename(string(filename));
	EXPECT_THROW(cd_raw.Open(), io_exception) << "Raw ISO CD-ROM image file size must be a multiple of 2536";
	resize_file(filename, 2 * 2536);
	cd_raw.Open();
	EXPECT_EQ(2, cd_raw.GetBlockCount());
	remove(filename);

	filename = CreateTempFile(2* 2048);
	cd_physical.SetFilename("\\" + string(filename));
	// The respective code in SCSICD appears to be broken, see https://github.com/akuker/RASCSI/issues/919
	EXPECT_THROW(cd_physical.Open(), io_exception) << "Invalid physical CD-ROM file";
	remove(filename);
}

TEST(ScsiCdTest, ReadToc)
{
	auto bus = make_shared<MockBus>();
	auto controller_manager = make_shared<ControllerManager>(*bus);
	auto controller = make_shared<MockAbstractController>(controller_manager, 0);
	const unordered_set<uint32_t> sector_sizes;
	auto cd = make_shared<MockSCSICD>(0, sector_sizes);
	const unordered_map<string, string> params;
	cd->Init(params);

	controller->AddDevice(cd);

	EXPECT_THAT([&] { cd->Dispatch(scsi_command::eCmdReadToc); }, Throws<scsi_exception>(AllOf(
			Property(&scsi_exception::get_sense_key, sense_key::NOT_READY),
			Property(&scsi_exception::get_asc, asc::MEDIUM_NOT_PRESENT))));

	// Further testing requires filesystem access
}