verbleiber 0.10.0

Log organizer whereabouts on events via RFID tags and buttons
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/*
 * Copyright 2022-2026 Jochen Kupperschmidt
 * License: MIT
 */

use anyhow::{Result, anyhow};
use bimap::BiMap;
use evdev::KeyCode;

pub(crate) type KeyName = String;

pub(crate) struct KeyCodeNameMapping {
    names_to_codes: BiMap<KeyName, KeyCode>,
}

impl KeyCodeNameMapping {
    pub(crate) fn new() -> Result<Self> {
        let mut names_to_codes: BiMap<KeyName, KeyCode> = BiMap::new();

        let mut insert = |name: &str, code: KeyCode| -> Result<()> {
            names_to_codes
                .insert_no_overwrite(name.to_owned(), code)
                .map_err(|(name, code)| {
                    anyhow!(
                        "Inserting ({:?}, {:?}) without overwrite failed",
                        name,
                        code
                    )
                })
        };

        // See file `/usr/include/linux/input-event-codes.h` (or
        // https://github.com/torvalds/linux/blob/master/include/uapi/linux/input-event-codes.h
        // on the web) for details.

        // mouse
        insert("left", KeyCode::BTN_LEFT)?;
        insert("right", KeyCode::BTN_RIGHT)?;
        insert("middle", KeyCode::BTN_MIDDLE)?;
        insert("side", KeyCode::BTN_SIDE)?;
        insert("extra", KeyCode::BTN_EXTRA)?;
        insert("forward", KeyCode::BTN_FORWARD)?;
        insert("back", KeyCode::BTN_BACK)?;
        insert("task", KeyCode::BTN_TASK)?;

        // joystick
        insert("trigger", KeyCode::BTN_TRIGGER)?;
        insert("thumb", KeyCode::BTN_THUMB)?;
        insert("thumb2", KeyCode::BTN_THUMB2)?;
        insert("top", KeyCode::BTN_TOP)?;
        insert("top2", KeyCode::BTN_TOP2)?;
        insert("pinkie", KeyCode::BTN_PINKIE)?;
        insert("base", KeyCode::BTN_BASE)?;
        insert("base2", KeyCode::BTN_BASE2)?;
        insert("base3", KeyCode::BTN_BASE3)?;
        insert("base4", KeyCode::BTN_BASE4)?;
        insert("base5", KeyCode::BTN_BASE5)?;
        insert("base6", KeyCode::BTN_BASE6)?;
        insert("dead", KeyCode::BTN_DEAD)?;

        // gamepad
        insert("a", KeyCode::BTN_SOUTH)?;
        insert("b", KeyCode::BTN_EAST)?;
        insert("c", KeyCode::BTN_C)?;
        insert("x", KeyCode::BTN_NORTH)?;
        insert("y", KeyCode::BTN_WEST)?;
        insert("z", KeyCode::BTN_Z)?;
        insert("tl", KeyCode::BTN_TL)?;
        insert("tr", KeyCode::BTN_TR)?;
        insert("tl2", KeyCode::BTN_TL2)?;
        insert("tr2", KeyCode::BTN_TR2)?;
        insert("select", KeyCode::BTN_SELECT)?;
        insert("start", KeyCode::BTN_START)?;
        insert("mode", KeyCode::BTN_MODE)?;
        insert("thumbl", KeyCode::BTN_THUMBL)?;
        insert("thumbr", KeyCode::BTN_THUMBR)?;

        // directional pad
        insert("dpad_up", KeyCode::BTN_DPAD_UP)?;
        insert("dpad_down", KeyCode::BTN_DPAD_DOWN)?;
        insert("dpad_left", KeyCode::BTN_DPAD_LEFT)?;
        insert("dpad_right", KeyCode::BTN_DPAD_RIGHT)?;

        insert("trigger_happy1", KeyCode::BTN_TRIGGER_HAPPY1)?;
        insert("trigger_happy2", KeyCode::BTN_TRIGGER_HAPPY2)?;
        insert("trigger_happy3", KeyCode::BTN_TRIGGER_HAPPY3)?;
        insert("trigger_happy4", KeyCode::BTN_TRIGGER_HAPPY4)?;
        insert("trigger_happy5", KeyCode::BTN_TRIGGER_HAPPY5)?;
        insert("trigger_happy6", KeyCode::BTN_TRIGGER_HAPPY6)?;
        insert("trigger_happy7", KeyCode::BTN_TRIGGER_HAPPY7)?;
        insert("trigger_happy8", KeyCode::BTN_TRIGGER_HAPPY8)?;

        Ok(Self { names_to_codes })
    }

    pub(crate) fn find_code_for_name(&self, name: KeyName) -> Option<&KeyCode> {
        self.names_to_codes.get_by_left(&name)
    }

    pub(crate) fn find_name_for_code(&self, code: KeyCode) -> Option<&KeyName> {
        self.names_to_codes.get_by_right(&code)
    }
}