#!/usr/bin/env bash
# page.sh 1‒10 – Waybar “page” indicator
# deps: socat, awk, sed, grep

page=$1
icons=( "" "" "" "" "" "" "" "" "" "" "󰝚" )

to_page() {
  (( $1 <=  3 )) && echo 1 && return
  (( $1 <=  6 )) && echo 2 && return
  (( $1 <=  9 )) && echo 3 && return
  (( $1 <= 12 )) && echo 4 && return
  (( $1 <= 15 )) && echo 5 && return
  (( $1 <= 18 )) && echo 6 && return
  (( $1 <= 21 )) && echo 7 && return
  (( $1 <= 24 )) && echo 8 && return
  (( $1 <= 27 )) && echo 9 && return
  echo 10
}

# Return 0 if THIS page has at least one window, else 1
is_occupied() {
  # Get workspace id + windows count pairs from JSON
  # Example snippets: {"id":1,"windows":3, ...}
  while read -r id windows; do
    (( $(to_page "$id") == page )) && (( windows > 0 )) && return 0
  done < <(
    hyprctl -j workspaces \
      | grep -o '"id":[0-9]\+|"windows":[0-9]\+' \
      | sed -n 'N;s/"id":\([0-9]\+\)\n"windows":\([0-9]\+\)/\1 \2/p'
  )
  return 1
}

emit() {
  local classes=()
  if (( $1 == page )); then
    classes+=(active)
  else
    is_occupied && classes+=(occupied)
  fi

  if ((${#classes[@]})); then
    printf '{"text":"%s","class":"%s"}\n' \
           "${icons[page]}" "$(IFS=' '; echo "${classes[*]}")"
  else
    printf '{"text":"%s"}\n' "${icons[page]}"
  fi
}

# Initial state
active_ws=$(hyprctl activeworkspace | awk '/^ID /{print $2}')
current_page=$(to_page "${active_ws:-1}")
emit "$current_page"
current_occ=$(is_occupied && echo 1 || echo 0)

# Live updates
socket="$XDG_RUNTIME_DIR/hypr/$HYPRLAND_INSTANCE_SIGNATURE/.socket2.sock"
socat -U - UNIX-CONNECT:"$socket" | while read -r line; do
  [[ $line =~ ^(workspace|openwindow|closewindow|movewindow) ]] || continue
  if [[ $line == workspace* ]]; then
    ws=${line#*>>}; ws=${ws%% *}
    new_page=$(to_page "$ws")
  else
    new_page=$current_page
  fi
  new_occ=$(is_occupied && echo 1 || echo 0)
  if (( new_page != current_page || new_occ != current_occ )); then
    emit "$new_page"
    current_page=$new_page
    current_occ=$new_occ
  fi
done


# # page.sh 1‒10 – Waybar “page” indicator
# # deps: socat, awk • (still no jq)
#
# page=$1                               # this script instance’s page (1‒10)
#
# # ── icon lookup table ────────────────────────────────────────────
# icons=( "" "" "" "" "" "" "" "" "" "" "󰝚" )
#
# # map numeric workspace → page (1‒10)
# to_page() {
#   (( $1 <=  3 )) && echo 1 && return
#   (( $1 <=  6 )) && echo 2 && return
#   (( $1 <=  9 )) && echo 3 && return
#   (( $1 <= 12 )) && echo 4 && return
#   (( $1 <= 15 )) && echo 5 && return
#   (( $1 <= 18 )) && echo 6 && return
#   (( $1 <= 21 )) && echo 7 && return
#   (( $1 <= 24 )) && echo 8 && return
#   (( $1 <= 27 )) && echo 9 && return
#   echo 10
# }
#
# # does THIS page contain at least one window?
# is_occupied() {
#   while read -r ws_id; do
#     (( $(to_page "$ws_id") == page )) && return 0
#   done < <(hyprctl clients | awk '/workspace:/ {print $2}')
#   return 1
# }
#
# emit() {
#   local classes=()
#
#   if (( $1 == page )); then        # ← is THIS instance the active page?
#     classes+=(active)              #    yes → mark it only “active”
#   else
#     is_occupied && classes+=(occupied)   #    no  → maybe “occupied”
#   fi
#
#   if ((${#classes[@]})); then
#     printf '{"text":"%s","class":"%s"}\n' \
#            "${icons[page]}" "$(IFS=' '; echo "${classes[*]}")"
#   else
#     printf '{"text":"%s"}\n' "${icons[page]}"
#   fi
# }
#
# # ── initial state ────────────────────────────────────────────────
# active_ws=$(hyprctl activeworkspace | awk '/^ID /{print $2}')
# current_page=$(to_page "${active_ws:-1}")
# emit "$current_page"
# current_occ=$(is_occupied && echo 1 || echo 0)
#
# # ── live updates via Hyprland socket2 ───────────────────────────
# socket="$XDG_RUNTIME_DIR/hypr/$HYPRLAND_INSTANCE_SIGNATURE/.socket2.sock"
# socat -U - UNIX-CONNECT:"$socket" | while read -r line; do
#   [[ $line =~ ^(workspace|openwindow|closewindow) ]] || continue
#
#   # recompute state if anything relevant changed
#   if [[ $line == workspace* ]]; then
#     ws=${line#*>>}; ws=${ws%% *}
#     new_page=$(to_page "$ws")
#   else
#     new_page=$current_page
#   fi
#   new_occ=$(is_occupied && echo 1 || echo 0)
#
#   # update Waybar only when something actually changed
#   if (( new_page != current_page || new_occ != current_occ )); then
#     emit "$new_page"
#     current_page=$new_page
#     current_occ=$new_occ
#   fi
# done
#