#pragma once

#include <dirent.h>
#include <string>
#include <vector>

namespace tt::app::files {

    /** File types for `dirent`'s `d_type`. */
enum {
    TT_DT_UNKNOWN = 0,
#define TT_DT_UNKNOWN TT_DT_UNKNOWN // Unknown type
    TT_DT_FIFO = 1,
#define TT_DT_FIFO TT_DT_FIFO // Named pipe or FIFO
    TT_DT_CHR = 2,
#define TT_DT_CHR TT_DT_CHR // Character device
    TT_DT_DIR = 4,
#define TT_DT_DIR TT_DT_DIR // Directory
    TT_DT_BLK = 6,
#define TT_DT_BLK TT_DT_BLK // Block device
    TT_DT_REG = 8,
#define TT_DT_REG TT_DT_REG // Regular file
    TT_DT_LNK = 10,
#define TT_DT_LNK TT_DT_LNK // Symbolic link
    TT_DT_SOCK = 12,
#define TT_DT_SOCK TT_DT_SOCK // Local-domain socket
    TT_DT_WHT = 14
#define TT_DT_WHT TT_DT_WHT // Whiteout inodes
};

std::string getChildPath(const std::string& basePath, const std::string& childPath);

typedef int (*ScandirFilter)(const struct dirent*);

typedef bool (*ScandirSort)(const struct dirent&, const struct dirent&);

bool dirent_sort_alpha_and_type(const struct dirent& left, const struct dirent& right);

int dirent_filter_dot_entries(const struct dirent* entry);

/**
 * A scandir()-like implementation that works on ESP32.
 * It does not return "." and ".." items but otherwise functions the same.
 * It returns an allocated output array with allocated dirent instances.
 * The caller is responsible for free-ing the memory of these.
 *
 * @param[in] path path the scan for files and directories
 * @param[out] outList a pointer to vector of dirent
 * @param[in] filter an optional filter to filter out specific items
 * @param[in] sort an optional sorting function
 * @return the amount of items that were stored in "output" or -1 when an error occurred
 */
int scandir(
    const std::string& path,
    std::vector<dirent>& outList,
    ScandirFilter _Nullable filter,
    ScandirSort _Nullable sort
);

bool isSupportedExecutableFile(const std::string& filename);
bool isSupportedImageFile(const std::string& filename);
bool isSupportedTextFile(const std::string& filename);

} // namespace