#pragma once

#include <cstdint>
#include <string>
#include <vector>

// Who the SSH App connects to, and which servers it has met (issue #2, N1 Q262 and Q263): kept
// in the device's settings as a few lines of text.
namespace roro::term {

struct SshTarget {
    std::string user, host;
    uint16_t port = 22;
    std::string text() const;      // user@host, with :port when it isn't 22
    std::string hostPort() const;  // host:port, always: what a host key is remembered under
};
// "user@host", "user@host:2222". "" or what is wrong with it.
std::string parseSshTarget(const std::string& text, SshTarget& out);

// Up to eight, the last used first; one a line.
class SshHosts {
   public:
    static constexpr size_t kMax = 8;
    explicit SshHosts(const std::string& stored = "");
    const std::vector<std::string>& list() const { return hosts_; }
    void used(const SshTarget& target);  // to the front, added if it's new
    void remove(size_t index);
    std::string stored() const;

   private:
    std::vector<std::string> hosts_;
};

// The fingerprint each server showed the first time: "host:port SHA256:...", one a line, sixteen
// at most (the oldest goes).
class SshKnownHosts {
   public:
    static constexpr size_t kMax = 16;
    explicit SshKnownHosts(const std::string& stored = "");
    std::string fingerprintOf(const std::string& hostPort) const;  // "" if never met
    void remember(const std::string& hostPort, const std::string& fingerprint);
    void forget(const std::string& hostPort);
    std::string stored() const;

   private:
    std::vector<std::pair<std::string, std::string>> known_;
};

}  // namespace roro::term