;; Kanata configuration for MacBook Air M2 with advanced home row modifiers
;; Uses tap-hold-release-keys with bilateral combinations for better accuracy

(defcfg
  process-unmapped-keys yes
  ;; Adjust these paths based on your system
  ;; macOS typically uses something like this:
  ;; linux-dev /dev/input/by-path/your-keyboard-path
  ;; For macOS, you might need to specify the input device differently
)

(defsrc
  esc  f1   f2   f3   f4   f5   f6   f7   f8   f9   f10  f11  f12
  grv  1    2    3    4    5    6    7    8    9    0    -    =    bspc
  tab  q    w    e    r    t    y    u    i    o    p    [    ]    \
  caps a    s    d    f    g    h    j    k    l    ;    '    ret
  lsft z    x    c    v    b    n    m    ,    .    /    rsft
  fn   lctl lalt lmet           spc           rmet ralt left down up   rght
)

(defvar
  ;; Timing values - adjust based on your typing speed
  tap-time 200
  hold-time 150

  ;; Define which keys are on each hand for bilateral combinations
  left-hand-keys (q w e r t a s d f g z x c v b)
  right-hand-keys (y u i o p h j k l ; n m , . /)
)

;; Base layer with home row modifiers and proper media keys
(deflayer base
  esc  brdn brup mctl @spotlight f5 f6 prev pp   next mute vold volu
  grv  1    2    3    4    5    6    7    8    9    0    -    =    bspc
  tab  q    w    e    r    t    y    u    i    o    p    [    ]    \
  caps @a   @s   @d   @f   g    h    @j   @k   @l   @;   '    ret
  lsft z    x    c    v    b    n    m    ,    .    /    rsft
  fn   lctl lalt lmet           spc           rmet ralt left down up   rght
)

;; Layer without modifiers - used temporarily when tapping home row keys
(deflayer nomods
  esc  brdn brup mctl @spotlight f5 f6 prev pp   next mute vold volu
  grv  1    2    3    4    5    6    7    8    9    0    -    =    bspc
  tab  q    w    e    r    t    y    u    i    o    p    [    ]    \
  caps a    s    d    f    g    h    j    k    l    ;    '    ret
  lsft z    x    c    v    b    n    m    ,    .    /    rsft
  fn   lctl lalt lmet           spc           rmet ralt left down up   rght
)

(deffakekeys
  to-base (layer-switch base)
)

(defalias
  spotlight (multi lmet spc)  ;; Command + Space
  ;; Tap behavior: switch to nomods layer temporarily, then back to base
  tap (multi
    (layer-switch nomods)
    (on-idle-fakekey to-base tap 20)
  )

  ;; Home row modifiers with bilateral combinations
  ;; Left hand keys with LEFT-side modifiers
  a (tap-hold-release-keys $tap-time $hold-time (multi a @tap) lctl $right-hand-keys)
  s (tap-hold-release-keys $tap-time $hold-time (multi s @tap) lalt $right-hand-keys) 
  d (tap-hold-release-keys $tap-time $hold-time (multi d @tap) lmet $right-hand-keys)
  f (tap-hold-release-keys $tap-time $hold-time (multi f @tap) lsft $right-hand-keys)
  
  ;; Right hand keys with RIGHT-side modifiers
  j (tap-hold-release-keys $tap-time $hold-time (multi j @tap) rsft $left-hand-keys)
  k (tap-hold-release-keys $tap-time $hold-time (multi k @tap) rmet $left-hand-keys)
  l (tap-hold-release-keys $tap-time $hold-time (multi l @tap) ralt $left-hand-keys)
  ; (tap-hold-release-keys $tap-time $hold-time (multi ; @tap) rctl $left-hand-keys)
)