#include <gtest/gtest.h>

#include "Helper.h"

#include "../AccessHelper.h"
#include "../fat32/FS.h"

// dd if=/dev/zero of=/tmp/ram/orig.fat32 bs=8192 count=4096
// mkfs.vfat -F 32 -R 32 -s 8 orig.fat32
// hexdump -v -C -n 512 orig.fat32



TEST(TestCreate, structure) {

	FAT32::FSHeader header;

	ASSERT_EQ(0x0B, (uint8_t*)&header.bytesPerSector - (uint8_t*)&header);
	ASSERT_EQ(0x0D, (uint8_t*)&header.sectorsPerCluster - (uint8_t*)&header);
	ASSERT_EQ(0x0E, (uint8_t*)&header.numReservedSectors - (uint8_t*)&header);
	ASSERT_EQ(0x10, (uint8_t*)&header.numberOfFATs - (uint8_t*)&header);
	ASSERT_EQ(0x15, (uint8_t*)&header.mediaDescriptor - (uint8_t*)&header);
	ASSERT_EQ(0x20, (uint8_t*)&header.sectorsInPartition - (uint8_t*)&header);
	ASSERT_EQ(0x24, (uint8_t*)&header.sectorsPerFAT - (uint8_t*)&header);
	ASSERT_EQ(0x2C, (uint8_t*)&header.rootDirFirstCluster - (uint8_t*)&header);

}

TEST (TestCreate, write) {

	using BlockDev = AccessHelper<TestDevice>;

	size_t size = 32*1024*1024;
	TestDevice dev(size);
	BlockDev bDev(dev);
	FAT32::FS<BlockDev> fs(bDev, 0);
	fs.setup(size);

	const char* test = "This is a test";
	FAT32::FS<BlockDev>::File2 f1 = fs.create2("test1.txt");
	f1.write(strlen(test), (const uint8_t*)test, [](int percent) {});

	FAT32::FS<BlockDev>::File2 f2 = fs.create2("test2.txt");
	f2.write(strlen(test), (const uint8_t*)test, [](int percent) {});

	dev.toFile("/tmp/ram/1.fat32");

	// mount -t vfat 1.fat32 /mnt/fat/ && ls -l /mnt/fat/ && cat /mnt/fat/test1.txt && umount /mnt/fat

}