# Shared launcher for the floating terminal sheets (#139). Used by waybar.nix
# (nomarchy-calendar) and rofi.nix (the doctor sheet) — the classed Kitty
# windows hyprland.nix floats and centers.
#
# Why the size lives here and not in a window rule: Hyprland 0.55.4 silently
# ignores a *percentage* `size` rule.  Measured on hardware 2026-07-16, both
# rule orders, Kitty's own memory disabled so nothing could mask it:
# `size 60% 65%` → the window keeps its requested size (no rule applied);
# `size 1536 936` → lands exactly, in either order.  No `hyprctl configerrors`
# either way, which is how it survived the post-0.53 rule rewrite unnoticed.
#
# Absolute px is not a fix: "a fraction of the screen" is the whole intent, and
# one px pair cannot serve a 2560x1440 desk monitor and the 1366x768 Acer that
# is live QA (#131).  A rule cannot compute it — the monitor is unknown at
# eval time — so the sheet asks for its own size instead: read the focused
# monitor here, hand Kitty the px, and let it request them.  Those windows
# therefore carry float/center rules and deliberately no `size` rule.
{ pkgs }:

pkgs.writeShellScriptBin "nomarchy-term-sheet" ''
  set -u
  # usage: nomarchy-term-sheet <class> <width%> <height%> <cmd> [args...]
  [ "$#" -ge 4 ] || { echo "usage: nomarchy-term-sheet <class> <w%> <h%> <cmd> [args...]" >&2; exit 64; }
  cls="$1"; wpct="$2"; hpct="$3"; shift 3

  # Hyprland reports the monitor in physical px plus the scale it renders at;
  # Kitty sizes in logical px, so divide before taking the fraction.  A sheet
  # that opens at a clumsy size still beats no sheet, so every failure here
  # falls back rather than exits: no compositor (a TTY run), no jq answer, or
  # a nonsense answer all land on a size that fits the smallest panel we ship
  # on.
  dims=$(hyprctl monitors -j 2>/dev/null \
    | ${pkgs.jq}/bin/jq -r --argjson w "$wpct" --argjson h "$hpct" '
        [ .[] | select(.focused) ][0]
        | select(. != null)
        | (.scale // 1) as $s
        | select($s > 0)
        | "\((.width  / $s * $w / 100) | floor) \((.height / $s * $h / 100) | floor)"' 2>/dev/null) || dims=
  width=''${dims%% *}
  height=''${dims##* }
  case "$width$height" in
    *[!0-9]*|"") width=800; height=500 ;;
  esac
  [ "$width"  -ge 320 ] 2>/dev/null || width=800
  [ "$height" -ge 240 ] 2>/dev/null || height=500

  exec ${pkgs.kitty}/bin/kitty \
    -o remember_window_size=no \
    -o initial_window_width="$width" \
    -o initial_window_height="$height" \
    --class="$cls" -e "$@"
''