// gKeyMapper - keyboard layout lookups (xkbcommon), shared by GUI and daemon.
//
// The active layout is read from /etc/default/keyboard (XKBLAYOUT). Without it,
// names fall back to the layout-independent US key positions in shared/keys.
#ifndef GKEYMAPPER_KEYMAP_H
#define GKEYMAPPER_KEYMAP_H

#include <string>

struct xkb_keymap;
struct xkb_state;

namespace gkeymapper {

// Two-way lookup on the active keyboard layout:
//   - daemon: canonical key name -> Linux input (evdev) code
//   - GUI:    pressed X keycode  -> canonical base key name (level 0)
class Keymap {
public:
    Keymap() = default;
    ~Keymap();

    Keymap(const Keymap&) = delete;
    Keymap& operator=(const Keymap&) = delete;

    // Builds the keymap from /etc/default/keyboard. Returns false if it cannot
    // be built; the lookups then use the US fallback.
    bool init();

    bool is_ready() const { return state_ != nullptr; }
    const std::string& layout_name() const { return layoutName_; }

    // Canonical key name -> Linux input (evdev) code, e.g. "z" -> 21 on a German
    // layout. Falls back to linux_key_code() for names that are not part of the
    // layout.
    int key_code(const std::string& name) const;

    // X keycode (same value GDK reports) -> level-0 keysym name, lowercased
    // ("ssharp", "a", "f4"). Empty if it cannot be resolved. Used by the capture
    // dialog so "shift+ssharf" is recorded instead of the shifted symbol.
    std::string base_key_name(unsigned int keycode) const;

private:
    xkb_keymap* keymap_ = nullptr;
    xkb_state* state_ = nullptr;
    std::string layoutName_;
};

} // namespace gkeymapper

#endif // GKEYMAPPER_KEYMAP_H