#include "miniwebcam.h"
#include "inmemorytar.h"
#include "inmemoryfile.h"

InMemoryTar::InMemoryTar() {
    struct archive *a;
    struct archive_entry *entry;
    size_t tar_size = _binary_assets_tar_end - _binary_assets_tar_start;
    int r;

    debug ("");

    a = archive_read_new();
    archive_read_support_format_tar(a);
    if (a == NULL) ErrorExit("error on archive new", -1);

    r = archive_read_open_memory(a, _binary_assets_tar_start, tar_size);
    if (r != ARCHIVE_OK) ErrorExit("bindary asset could not been found in memory", -1);

    while (archive_read_next_header(a, &entry) == ARCHIVE_OK) {
        debug ("found file %s\n", archive_entry_pathname(entry));
        InMemoryFile *imf = new InMemoryFile();
        size_t size = archive_entry_size(entry);
        imf->filename = archive_entry_pathname(entry);
        imf->Allocate(size);
        archive_read_data(a, imf->mem, size);
        files.push_back(imf);
    }
    archive_read_free(a);
};

InMemoryTar::~InMemoryTar() {
    std::list<InMemoryFile*>::iterator f;

    f = files.begin();
    while (f != files.end()) {
        InMemoryFile *imf = *f;
		files.remove(*f);
        delete imf;
        f = files.begin();
    }
};


/// @brief 
/// @param file 
/// @param imf - do not free the pointer!!!!
/// @return 
int InMemoryTar::FindFile(std::string file, InMemoryFile **imf) {
    std::list<InMemoryFile*>::iterator f;

    for (f = files.begin(); f != files.end(); f++) {
        if (file.compare ((*f)->filename) == 0) {
            *imf = *f;
            return 1;
        }
    }

    return 0;
}