#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>

#include "fat12.h"
#include "io.h"

static int make_image(const char *name, uint32_t size)
{

    struct pang_io *io = pang_open(name);
    if (!io)
    {
        fprintf(stderr, "couldn't open %s: %s\n", name, strerror(errno));
        return 1;
    }

    if (-1 == fat12_mkfs(io, size))
    {
        fprintf(stderr, "couldn't make fat12 on %s: %s\n", name, strerror(errno));
        pang_close(&io);
        return 1;
    }
    pang_close(&io);
    return 0;
}

static int list_directory(void *data, const struct fat12_dirent *dirent)
{
    printf("%d  %d  %x  %d  %d  %s\n", dirent->ctime, dirent->mtime, dirent->file_attributes, dirent->size, dirent->first_cluster, dirent->filename);
}

static int run_command(const char *cmd)
{
    int ret = system(cmd);
    if (ret)
    {
        exit(1);
    }
    return 0;
}

static void memset_str(uint8_t *bfr, uint8_t *val, size_t count)
{
    int i;
    for (i = 0; i < count; i++)
    {
        bfr[i] = val[i & 0x7];
    }
}

int main(int argc, char **argv)
{
    uint8_t tmp_bfr[32768];
    const char *img_name = "build/fat12-fragmented.img";
    int ret = 0;
    int fd;
    struct fat12_partition *part = fat12_alloc();

    ret = make_image(img_name, 9 * 1024 * 1024);
    if (ret == -1)
    {
        return 1;
    }

    if (-1 == fat12_open(part, img_name))
    {
        fprintf(stderr, "couldn't open fat12 on %s: %s\n", img_name, strerror(errno));
        return 1;
    }

    memset_str(tmp_bfr, "baz.qux\x0a", 16384);
    fat12_write_file(part, "baz.qux", tmp_bfr, 16384);
    // run_command("yes baz.qux | dd bs=16384 count=1 | fattool build/fat12-fragmented.img writefile baz.qux");

    memset_str(tmp_bfr, "foo.bar\x0a", 16384);
    fat12_write_file(part, "foo.bar", tmp_bfr, 16384);
    // run_command("yes foo.bar | dd bs=16384 count=1 | fattool build/fat12-fragmented.img writefile foo.bar");

    fat12_delete_file(part, "baz.qux");
    // fat12_flush(part);
    // run_command("fattool build/fat12-fragmented.img deletefile baz.qux");
    // fat12_sync(part);

    memset_str(tmp_bfr, "baz.qux\x0a", 32768);
    fat12_write_file(part, "baz.qux", tmp_bfr, 32768);
    // run_command("yes baz.qux | dd bs=16384 count=2 | fattool build/fat12-fragmented.img writefile baz.qux");

    fat12_ls_foreach(part, 0, NULL, list_directory);

    fat12_close(part);
    fat12_free(&part);

    return 0;
}