#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include "unity/unity.h"
#include "fuse.h"
#include "fsactions.h"
#include "fsinterface.h"
#include "fusestructs.h"

FileSystem* fakefs;
fuseArgStruct dummyFuse;
int argc = 5;
char* argv[5];

void setUp(void)
{
    FuseStructInit(&dummyFuse);
    GetArguments(argc, argv, &dummyFuse);
    OpenFS(&dummyFuse, argv[0]);
    fakefs = SetupFS(&dummyFuse);
}

void tearDown(void)
{
    TearDownFS();
}

void Test_FuseGetArgs_Should_SetDummyArgs(void)
{
    GetArguments(argc, argv, &dummyFuse);
    TEST_ASSERT_EQUAL(1, dummyFuse.list);
    argv[1] = "-a";
    GetArguments(argc, argv, &dummyFuse);
    TEST_ASSERT_EQUAL(1, dummyFuse.add);
    argv[1] = "-r";
    GetArguments(argc, argv, &dummyFuse);
    TEST_ASSERT_EQUAL(1, dummyFuse.remove);
    argv[1] = "-e";
    GetArguments(argc, argv, &dummyFuse);
    TEST_ASSERT_EQUAL(1, dummyFuse.extract);
}

void Test_FindEmptyBitPosition_Should_ReturnPosition(void)
{
    TEST_ASSERT_EQUAL(3, FindEmptyBitPosition(7));
    TEST_ASSERT_EQUAL(1, FindEmptyBitPosition(29));
    TEST_ASSERT_EQUAL(5, FindEmptyBitPosition(95));
    TEST_ASSERT_EQUAL(31, FindEmptyBitPosition(2147483647));
    TEST_ASSERT_EQUAL(-1, FindEmptyBitPosition(4294967295));
}

void Test_FileSystem_Should_SuccessfullyOpen(void)
{
    GetArguments(argc, argv, &dummyFuse);
    OpenFS(&dummyFuse, argv[0]);
    fakefs = SetupFS(&dummyFuse);
}

void Test_FileSystem_Should_AddFirstFile(void)
{
    RunFuse(fakefs, &dummyFuse);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[0].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test", fakefs->inodes[0].blocks[0].name, 4);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[1].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("files", fakefs->inodes[1].blocks[0].name, 5);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[2].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test1.txt", fakefs->inodes[2].blocks[0].name, 9);
    ino_t inodeLocation = fakefs->inodes[2].blocks[0].inode;
    TEST_ASSERT_NOT_EMPTY(fakefs->dataBlocks[inodeLocation].byte);
}

void Test_FileSystem_Should_AddSecondFile(void)
{
    RunFuse(fakefs, &dummyFuse);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[0].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test", fakefs->inodes[0].blocks[0].name, 4);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[1].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("files", fakefs->inodes[1].blocks[0].name, 5);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[2].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test2.txt", fakefs->inodes[2].blocks[1].name, 9);
    ino_t inodeLocation = fakefs->inodes[2].blocks[1].inode;
    TEST_ASSERT_NOT_EMPTY(fakefs->dataBlocks[inodeLocation].byte);
}

void Test_FileSystem_Should_AddThirdFile(void)
{
    RunFuse(fakefs, &dummyFuse);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[0].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test", fakefs->inodes[0].blocks[0].name, 4);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[1].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("files", fakefs->inodes[1].blocks[0].name, 5);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[2].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test3.txt", fakefs->inodes[2].blocks[2].name, 9);
    ino_t inodeLocation = fakefs->inodes[2].blocks[2].inode;
    TEST_ASSERT_NOT_EMPTY(fakefs->dataBlocks[inodeLocation].byte);
}

void Test_FileSystem_Should_ListContents(void)
{
    RunFuse(fakefs, &dummyFuse);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[0].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test", fakefs->inodes[0].blocks[0].name, 4);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[1].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("files", fakefs->inodes[1].blocks[0].name, 5);
    TEST_ASSERT_EQUAL(1, fakefs->inodes[2].isValid);
    TEST_ASSERT_EQUAL_CHAR_ARRAY("test1.txt", fakefs->inodes[2].blocks[0].name, 9);
    TEST_MESSAGE("This only runs the list operation. Check info yourself.");
}
void Test_FileSystem_Should_RemoveFirstFile(void)
{
    RunFuse(fakefs, &dummyFuse); 
    TEST_ASSERT_EQUAL(0, fakefs->inodes[2].blocks[0].isValid);
}

void Test_FileSystem_Should_RemoveSecondFile(void)
{
    RunFuse(fakefs, &dummyFuse); 
    TEST_ASSERT_EQUAL(0, fakefs->inodes[2].blocks[1].isValid);
}

void Test_FileSystem_Should_RemoveThirdFile(void)
{
    RunFuse(fakefs, &dummyFuse); 
    TEST_ASSERT_EQUAL(0, fakefs->inodes[2].blocks[2].isValid);
}

void Test_FileSystem_Should_RemoveEmptyDirectories(void)
{
    TEST_ASSERT_EQUAL(0, fakefs->inodes[2].isValid);
    TEST_ASSERT_EQUAL(0, fakefs->inodes[1].blocks[0].isValid);
    TEST_ASSERT_EQUAL(0, fakefs->inodes[1].isValid);
    TEST_ASSERT_EQUAL(0, fakefs->inodes[0].blocks[0].isValid);
}

int main(void)
{
    remove("test/fakefs.test");
    argv[0] = "bin/fuse.out";
    argv[1] = "-l";
    argv[2] = "test/files/test1.txt";
    argv[3] = "-f";
    argv[4] = "test/fakefs.test";
    UNITY_BEGIN();
    RUN_TEST(Test_FuseGetArgs_Should_SetDummyArgs);
    RUN_TEST(Test_FindEmptyBitPosition_Should_ReturnPosition);
    RUN_TEST(Test_FileSystem_Should_SuccessfullyOpen);
    argv[1] = "-a";
    RUN_TEST(Test_FileSystem_Should_AddFirstFile);
    argv[2] = "test/files/test2.txt";
    RUN_TEST(Test_FileSystem_Should_AddSecondFile);
    argv[2] = "test/files/test3.txt";
    RUN_TEST(Test_FileSystem_Should_AddThirdFile);
    argv[1] = "-l";
    RUN_TEST(Test_FileSystem_Should_ListContents);
    argv[1] = "-r";
    argv[2] = "test/files/test1.txt";
    RUN_TEST(Test_FileSystem_Should_RemoveFirstFile);
    argv[2] = "test/files/test2.txt";
    RUN_TEST(Test_FileSystem_Should_RemoveSecondFile);
    argv[2] = "test/files/test3.txt";
    RUN_TEST(Test_FileSystem_Should_RemoveThirdFile);
    RUN_TEST(Test_FileSystem_Should_RemoveEmptyDirectories);
    return UNITY_END();
}