lock-notifications

#!/usr/bin/bash

set -Eeuo pipefail

state_file="${XDG_STATE_HOME:-$HOME/.local/state}/dotfiles/notifications.conf"
source_file="$HOME/.cache/dotfiles/lock-notifications.svg"
cache_file="$HOME/.cache/dotfiles/lock-notifications.png"
theme_file="${XDG_STATE_HOME:-$HOME/.local/state}/dotfiles/color-scheme"

mkdir -p "${source_file%/*}"

theme="dark"
if [[ -r "$theme_file" ]]; then
  theme=$(tr -d '[:space:]' < "$theme_file") || true
fi

encoded=""
if [[ -r "$state_file" ]]; then
  encoded=$(sed -n 's/^historyJson="\(.*\)"$/\1/p' "$state_file")
fi

history='[]'
if [[ -n "$encoded" ]]; then
  history=$(printf '"%s"' "$encoded" | jq -er 'fromjson | if type == "array" then . else error("history is not an array") end' 2> /dev/null) || history='[]'
fi

privacy="show"
if [[ -r "$state_file" ]]; then
  privacy=$(sed -n 's/^lockScreenPrivacy=//p' "$state_file" | tr -d '"\r')
  case "$privacy" in
    "") privacy="show" ;;
    show|redact|hide) ;;
    *) privacy="hide" ;;
  esac
fi

preferences_file="${DOTFILES_PREFERENCES:-$HOME/dotfiles/linux/config/system-settings/preferences.json}"
if [[ -r "$preferences_file" ]]; then
  privacy=$(jq -er '.notifications.lockScreenPrivacy' "$preferences_file") || privacy=hide
  case "$privacy" in show|redact|hide) ;; *) privacy=hide ;; esac
fi

temporary_source=$(mktemp "${source_file}.XXXXXX")
temporary_png=$(mktemp "${cache_file}.XXXXXX")
trap 'rm -f "$temporary_source" "$temporary_png"' EXIT

printf '%s\n' "$history" | jq -r --arg theme "$theme" --arg privacy "$privacy" '
  def clean:
    tostring
    | gsub("[[:space:]]+"; " ")
    | sub("^ +"; "")
    | sub(" +$"; "");

  def clip($limit):
    if length > $limit then .[0:($limit - 3)] + "..." else . end;

  def age($time):
    ((now | floor) - (($time // 0) | tonumber? // 0)) as $seconds
    | (if $seconds < 0 then 0 else $seconds end) as $value
    | if $value < 60 then "now"
      elif $value < 3600 then (($value / 60 | floor) | tostring) + "m"
      elif $value < 86400 then (($value / 3600 | floor) | tostring) + "h"
      elif $value < 604800 then (($value / 86400 | floor) | tostring) + "d"
      else (($value / 604800 | floor) | tostring) + "w"
      end;

   def cardHeight($record): 64;

  def icon($record; $x; $y; $primary):
    if (($record.app | ascii_downcase) | contains("microsoft teams")) then
      "<g transform=\"translate(" + ($x | tostring) + " " + ($y | tostring) + ") scale(0.3125)\">"
        + "<circle cx=\"49\" cy=\"19\" r=\"10\" fill=\"#7b83eb\"/>"
        + "<circle cx=\"51\" cy=\"46\" r=\"13\" fill=\"#5059c9\"/>"
        + "<path fill=\"#7b83eb\" d=\"M19 18h26a7 7 0 0 1 7 7v21a7 7 0 0 1-7 7H19z\"/>"
        + "<rect x=\"7\" y=\"20\" width=\"34\" height=\"32\" rx=\"6\" fill=\"#5059c9\"/>"
        + "<path fill=\"#fff\" d=\"M14 27h20v5h-7v14h-6V32h-7z\"/></g>"
    else
      "<path d=\"M10.268 21a2 2 0 0 0 3.464 0M3.262 15.326A1 1 0 0 0 4 17h16a1 1 0 0 0 .74-1.673C19.41 13.956 18 12.499 18 8A6 6 0 0 0 6 8c0 4.499-1.411 5.956-2.738 7.326\""
        + " transform=\"translate(" + ($x | tostring) + " " + ($y | tostring) + ") scale(0.833333)\""
        + " fill=\"none\" stroke=\"" + $primary + "\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"/>"
    end;

   def card($record; $y; $colors):
    (if $record.critical then $colors.urgent else $colors.active end) as $iconColor
    | (cardHeight($record)) as $height
     | "<rect x=\"24\" y=\"" + ($y | tostring) + "\" width=\"552\" height=\"" + ($height | tostring)
      + "\" rx=\"18\" fill=\"" + $colors.surface + "\"/>"
    + (if $record.critical then
        "<rect x=\"25\" y=\"" + (($y + 1) | tostring) + "\" width=\"550\" height=\"" + (($height - 2) | tostring)
          + "\" rx=\"17\" fill=\"" + $colors.urgent + "\" fill-opacity=\"0.12\"/>"
       else "" end)
     + "<rect x=\"36\" y=\"" + (($y + 12) | tostring) + "\" width=\"40\" height=\"40\" rx=\"12\" fill=\"" + $iconColor + "\"/>"
     + icon($record; 46; ($y + 22); $colors.primary)
     + "<text x=\"88\" y=\"" + (($y + 27) | tostring) + "\" fill=\"" + $colors.secondary + "\" font-size=\"10\">"
      + ($record.app | @html) + "</text>"
     + "<text x=\"562\" y=\"" + (($y + 27) | tostring) + "\" text-anchor=\"end\" fill=\"" + $colors.secondary + "\" font-size=\"10\">"
      + ($record.time | @html) + "</text>"
    + (if $record.summary == "" then "" else
         "<text x=\"88\" y=\"" + (($y + 48) | tostring) + "\" fill=\"" + $colors.primary + "\" font-size=\"12\">"
          + ($record.summary | @html) + "</text>"
       end)
      + "<rect x=\"24\" y=\"" + ($y | tostring) + "\" width=\"552\" height=\"" + ($height | tostring)
      + "\" rx=\"18\" fill=\"none\" stroke=\"" + $colors.border + "\" stroke-width=\"1\"/>";

  (if $theme == "light" then
     {surface: "#E8EBEF", border: "#D7DCE3", active: "#C9E1F7", primary: "#20242A", secondary: "#59616D", urgent: "#DA4939"}
   else
     {surface: "#2B303A", border: "#33404D", active: "#3E5978", primary: "#F8F9FB", secondary: "#B7BEC9", urgent: "#DA4939"}
   end) as $colors
  | (if type == "array" then . else [] end)
  | map(select(type == "object" and ((.summary // "") | type == "string")))
   | .[0:4]
  | map(
       {
           app: ((.appName // "Notification") | tostring | clean | clip(32)),
            summary: (if $privacy == "redact" then "Content hidden" else ((.summary // "") | clean | clip(58)) end),
           critical: ((.urgency // "") == "critical"),
          time: age(.time)
        }
    ) as $records
   | length as $total
   | ($records | map(cardHeight(.)) | add // 0) as $recordHeight
  | ($records | length) as $count
  | ($recordHeight + (if $count > 0 then ($count - 1) * 10 else 0 end)) as $listHeight
   | 64 as $startY
  | (reduce $records[] as $record
      ({svg: "", y: $startY};
        .svg += card($record; .y; $colors)
        | .y += cardHeight($record) + 10
      )) as $rendered
  | "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"600\" height=\"600\" viewBox=\"0 0 600 600\" font-family=\"Hack Nerd Font Mono, Hack, monospace\">"
     + "<text x=\"24\" y=\"28\" fill=\"" + $colors.primary + "\" font-size=\"16\" font-weight=\"bold\">Notifications</text>"
     + "<text x=\"576\" y=\"28\" text-anchor=\"end\" fill=\"" + $colors.secondary + "\" font-size=\"12\">"
     + ($total | tostring) + (if $total == 1 then " message" else " messages" end) + "</text>"
     + $rendered.svg
     + (if $total > $count then
          "<text x=\"24\" y=\"" + (($startY + $listHeight + 24) | tostring) + "\" fill=\"" + $colors.secondary + "\" font-size=\"11\">+" + (($total - $count) | tostring) + " more in history</text>"
        else "" end)
    + "</svg>"
    | if $privacy == "hide" then
        "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"600\" height=\"600\"></svg>"
      else . end
 ' > "$temporary_source"

if [[ -s "$source_file" && -s "$cache_file" ]] && cmp -s "$temporary_source" "$source_file"; then
  rm -f "$temporary_source" "$temporary_png"
  trap - EXIT
  printf '%s\n' "$cache_file"
  exit 0
fi

if command -v magick > /dev/null 2>&1; then
  magick -background none "$temporary_source" "PNG32:$temporary_png"
else
  convert -background none "$temporary_source" "PNG32:$temporary_png"
fi

if [[ ! -s "$source_file" ]] || ! cmp -s "$temporary_source" "$source_file"; then
  mv -f "$temporary_source" "$source_file"
else
  rm -f "$temporary_source"
fi

if [[ ! -s "$cache_file" ]] || ! cmp -s "$temporary_png" "$cache_file"; then
  mv -f "$temporary_png" "$cache_file"
else
  rm -f "$temporary_png"
fi

trap - EXIT
printf '%s\n' "$cache_file"