#include "platform/libssh_util.h"

#include <libssh_esp32.h>

namespace roro::sshutil {

std::string fingerprintOf(ssh_session s) {
    ssh_key key = nullptr;
    unsigned char* hash = nullptr;
    size_t len = 0;
    std::string out;
    if (ssh_get_server_publickey(s, &key) == SSH_OK && ssh_get_publickey_hash(key, SSH_PUBLICKEY_HASH_SHA256, &hash, &len) == SSH_OK) {
        if (char* text = ssh_get_fingerprint_hash(SSH_PUBLICKEY_HASH_SHA256, hash, len)) {
            out = text;  // "SHA256:..."
            ssh_string_free_char(text);
        }
        ssh_clean_pubkey_hash(&hash);
    }
    if (key) ssh_key_free(key);
    return out;
}

void startLibrary() {
    static bool started = false;
    if (!started) libssh_begin();
    started = true;
}

}  // namespace roro::sshutil