#!/bin/sh
# PhotoCraft AppImage entry point (packaging/linux/AppRun; installed by package.sh).
#
# On Wayland the compositor resolves a window's dock icon by taking the window's
# app_id (ai.storyteller.photocraft) and looking up an installed .desktop file.
# An AppImage installs nothing, so every AppImage run would otherwise show the
# generic "Wayland" icon (#593). Best-effort desktop integration: on first run
# (and whenever the AppImage's path changes) install the .desktop entry and the
# hicolor icons into $XDG_DATA_HOME, then launch. Every failure here must leave
# the launch untouched. Opt out with PHOTOCRAFT_NO_DESKTOP_INTEGRATION=1.

set -u

APPDIR="$(dirname "$(readlink -f "$0")")"
DESK_ID=ai.storyteller.photocraft

integrate() {
  case "${PHOTOCRAFT_NO_DESKTOP_INTEGRATION:-}" in
    1 | true | yes) return 0 ;;
  esac
  # The AppImage runtime exports $APPIMAGE; without it (an extracted AppDir) there
  # is no path to register and nothing to do.
  appimage="${APPIMAGE:-}"
  [ -n "$appimage" ] && [ -f "$appimage" ] || return 0
  appimage="$(readlink -f "$appimage")" || return 0
  # Exec= is parsed by the desktop: a path holding a quote, backquote, dollar, backslash,
  # percent or a line break would need escaping (or could add lines), so skip integration.
  case "$appimage" in
    *[\"\`\$\\%]* | *'
'*) return 0 ;;
  esac
  home="${HOME:-}"
  [ -n "$home" ] || return 0
  data="${XDG_DATA_HOME:-$home/.local/share}"
  src_desktop="$APPDIR/usr/share/applications/$DESK_ID.desktop"
  [ -f "$src_desktop" ] || return 0

  # If another integrator already registered a .desktop whose Exec points at this
  # AppImage, do not write a second launcher (#3623); remove our own if one is left
  # over, and still install the hicolor icons below. $DESKTOPINTEGRATION is not that
  # signal: PhotoCraft sets X-AppImage-Integrate=false, so AppImageLauncher skips the
  # AppImage and still exports the variable on its binfmt bypass. Treating it as
  # "already integrated" left the menu with no entry (#5534).
  apps="$data/applications"
  mkdir -p "$apps" 2>/dev/null || return 0
  external=0
  for f in "$apps"/*.desktop; do
    if [ ! -f "$f" ] || [ "$f" = "$apps/$DESK_ID.desktop" ]; then
      continue
    fi
    if grep '^Exec=' "$f" 2>/dev/null | grep -Fq "$appimage"; then
      external=1
      break
    fi
  done
  # AM / AppMan (#6392) install their own launcher, whose Exec runs a command on
  # PATH rather than this AppImage, so the check above misses it. AM's author
  # names the only two places it writes one: system-wide for AM, per user for
  # AppMan and rootless installs.
  for f in /usr/local/share/applications/photocraft-AM.desktop "$apps/photocraft-AM.desktop"; do
    if [ -f "$f" ]; then
      external=1
      break
    fi
  done
  if [ "$external" = 1 ]; then
    if [ -f "$apps/$DESK_ID.desktop" ]; then
      rm -f "$apps/$DESK_ID.desktop" 2>/dev/null || true
      command -v update-desktop-database >/dev/null 2>&1 && update-desktop-database "$apps" >/dev/null 2>&1
    fi
  else
    # Rewrite Exec to this AppImage (the binary is not on the host PATH) and drop
    # TryExec, which would hide the entry; everything else is shipped as packaged.
    tmp="$apps/.$DESK_ID.tmp.$$"
    esc="$(printf '%s' "$appimage" | sed 's/[\\&|]/\\&/g')"
    if sed -e "s|^Exec=.*|Exec=\"$esc\" %F|" -e '/^TryExec=/d' "$src_desktop" 2>/dev/null >"$tmp"; then
      if cmp -s "$tmp" "$apps/$DESK_ID.desktop"; then
        rm -f "$tmp"
      else
        if mv -f "$tmp" "$apps/$DESK_ID.desktop" 2>/dev/null; then
          command -v update-desktop-database >/dev/null 2>&1 && update-desktop-database "$apps" >/dev/null 2>&1
        else
          rm -f "$tmp"
        fi
      fi
    else
      rm -f "$tmp"
      return 0
    fi
  fi

  # Icons: per-file compare so an unchanged install costs a handful of cmp calls.
  src_icons="$APPDIR/usr/share/icons/hicolor"
  [ -d "$src_icons" ] || return 0
  icons="$data/icons/hicolor"
  (cd "$src_icons" && find . -type f) | while IFS= read -r rel; do
    mkdir -p "$icons/$(dirname "$rel")" 2>/dev/null || continue
    if ! cmp -s "$src_icons/$rel" "$icons/$rel"; then
      cp "$src_icons/$rel" "$icons/$rel" 2>/dev/null || true
    fi
  done
}

integrate
exec "$APPDIR/usr/bin/photocraft" "$@"