#!/usr/bin/env bash
# Type a chat command into Minecraft on a QWERTZ keyboard.
#
# ydotool speaks evdev keycodes, which are *positional* and named for a US
# layout, so `ydotool type` writes whatever the user's layout has at those
# positions. On QWERTZ that swaps y and z, and '/' is shift+7 rather than a key
# of its own. Sending the wrong thing does not fail loudly - it posts as chat,
# which is how "/reload" once went out as "-reload" and "day" as "daz".
#
#   mc-type.sh "time set day"     types /<command> and presses enter
set -uo pipefail
export YDOTOOL_SOCKET=${YDOTOOL_SOCKET:-/run/user/1000/.ydotool_socket}

declare -A K=(
  [a]=30 [b]=48 [c]=46 [d]=32 [e]=18 [f]=33 [g]=34 [h]=35 [i]=23
  [j]=36 [k]=37 [l]=38 [m]=50 [n]=49 [o]=24 [p]=25 [q]=16 [r]=19
  [s]=31 [t]=20 [u]=22 [v]=47 [w]=17 [x]=45
  [y]=44 [z]=21                      # QWERTZ: y and z sit on each other's keys
  [0]=11 [1]=2 [2]=3 [3]=4 [4]=5 [5]=6 [6]=7 [7]=8 [8]=9 [9]=10
  [' ']=57 [.]=52 [_]=12
)

ydotool key 42:0 54:0                     # make sure no shift is stuck
sleep 0.2
ydotool key 20:1 20:0                     # T -> open chat
sleep 0.9
ydotool key 42:1 8:1 8:0 42:0             # shift+7 -> '/'
sleep 0.3
ydotool key 42:0 54:0                     # release shift again, explicitly
sleep 0.2
cmd="$1"
for (( i=0; i<${#cmd}; i++ )); do
    ch="${cmd:$i:1}"
    code="${K[$ch]:-}"
    if [ -n "$code" ]; then ydotool key "$code:1" "$code:0"; sleep 0.04; fi
done
sleep 0.4
ydotool key 28:1 28:0                     # enter