;; Goku: 1 line
[:caps_lock :escape]

;; Karabiner JSON: ~30 lines

# Install Goku
brew install yqrashawn/goku/goku

# Start as service (watches ~/.config/karabiner.edn)
brew services start goku

# Or run once manually
goku

{:main [{:des "Rule description"
         :rules [[:from :to]
                 [:from2 :to2]]}]}

[:from :to]                           ;; Basic
[:from :to :condition]                ;; With condition
[:from :to :condition {:alone :x}]    ;; With options

;; Press sequence
[:a [:1 :2 :3]]           ;; a -> types 1, 2, 3

;; Simultaneous press (from)
[[:j :k] :escape]         ;; j+k together -> escape

[:!!1 "open -a Safari"]   ;; Hyper+1 runs shell command

{:applications {:chrome ["^com\\.google\\.Chrome$"]
                :code   ["com.microsoft.VSCode"]}
 :main [{:des "Chrome only"
         :rules [[:a :b :chrome]]}]}

{:devices {:hhkb [{:vendor_id 1278 :product_id 51966}]}
 :main [{:rules [[:a :b :hhkb]]}]}

{:input-sources {:us {:input_source_id "com.apple.keylayout.US"}}
 :main [{:rules [[:a :b :us]]}]}

[:a :b [:chrome :hhkb]]    ;; Both conditions
[:a :b [:!chrome]]         ;; NOT in Chrome

{:simlayers {:w-mode {:key :w}}        ;; Hold W activates layer
 :main [{:des "w-mode shortcuts"
         :rules [:w-mode                ;; Apply to this layer
                 [:e "open -a Finder"]  ;; W+E opens Finder
                 [:r "open -a Safari"]  ;; W+R opens Safari
                 ]}]}

{:simlayers {:w-mode {:key :w
                      :modi {:mandatory [:left_control]}}}}  ;; Ctrl+W activates

{:layers {:caps-mode {:key :caps_lock
                      :alone {:key :escape}}}}  ;; Tap=Esc, Hold=layer

;; Set variable on keydown, clear on keyup
[:w ["w-mode" 1] nil {:afterup ["w-mode" 0] :alone :w}]

;; Use the variable as condition
[:e :!Ce ["w-mode" 1]]  ;; W+E -> Cmd+E (only when w-mode=1)

{:templates {:open "open -a '%s'"
             :launch "/path/to/script.sh %s"
             :alfred "osascript -e 'tell application \"Alfred\" to run trigger \"%s\"'"}
 :main [{:rules [[:!!1 [:open "Safari"]]      ;; %s replaced with Safari
                 [:!!2 [:launch "arg1"]]]}]}

{:froms {:delete {:key :delete_or_backspace}
         :return {:key :return_or_enter}
         :mouse1 {:pkey :button1}}}

{:tos {:spotlight {:key :spacebar :modi :command}
       :paste {:key :v :modi :command}
       :shift-click {:pkey :button1 :modi :left_shift}}}

{:modifiers {:hyper [:command :shift :control :option]
             :meh   [:shift :control :option]}}

[:from :to :condition {
  :alone :key              ;; to_if_alone
  :held :key               ;; to_if_held_down
  :afterup :key            ;; to_after_key_up
  :delayed {:invoked :x :canceled :y}
  :params {:alone_timeout 200}
}]

{:profiles {:Default {:default true
                      :sim 250        ;; Simultaneous threshold (ms)
                      :delay 500      ;; Delayed action time (ms)
                      :alone 1000     ;; to_if_alone timeout (ms)
                      :held 500}}}    ;; Held threshold (ms)

{:main [{:des "Caps to Escape"
         :rules [[:caps_lock :escape]]}]}

{:applications {:chrome ["com.google.Chrome"]}
 :main [{:des "Chrome shortcuts"
         :rules [[:!Cl :!Ct :chrome]]}]}  ;; Cmd+L -> Cmd+T in Chrome

{:simlayers {:nav {:key :spacebar}}
 :main [{:des "Navigation layer"
         :rules [:nav
                 [:h :left_arrow]
                 [:j :down_arrow]
                 [:k :up_arrow]
                 [:l :right_arrow]]}]}

{:main [{:des "Caps Lock to Hyper"
         :rules [[:caps_lock :!CTOSleft_shift nil {:alone :escape}]]}]}

goku           # Compile karabiner.edn once
gokuw          # Watch mode (compile on change)
goku -h        # Help

# Service management
brew services start goku    # Start watch service
brew services stop goku     # Stop service
brew services restart goku  # Restart after changes

# Check logs
tail -f ~/Library/Logs/goku.log