degoogle: Add the script

This script will convert WebP to PNG and WebM to MP4. Added custom
action for Thunar as well.

.config/Thunar/uca.xml

@@ -12,4 +12,16 @@
 	<startup-notify/>
 	<directories/>
 </action>
+<action>
+	<icon>gtk-convert</icon>
+	<name>Degoogle</name>
+	<submenu></submenu>
+	<unique-id>1685216951025684-1</unique-id>
+	<command>~/.scripts/degoogle %F</command>
+	<description>Convert WebP and WebM to PNG and MP4 respectively</description>
+	<range>*</range>
+	<patterns>*.webp;*.webm</patterns>
+	<image-files/>
+	<video-files/>
+</action>
 </actions>

.scripts/degoogle

@@ -0,0 +1,31 @@
+#!/usr/bin/env fish
+
+for filename in $argv
+    switch $filename
+        case '*.webp'
+            set -l basename (basename $filename)
+            set -l dirname (dirname $filename)
+            set -l rootname (echo $basename | string split -f 1 -m 1 -r .)
+            set targetname "$dirname/$rootname.png"
+    
+            set attempt 0
+            while test $attempt -le 200
+                if test -f $targetname
+                    set attempt (math $attempt + 1)
+                    set targetname "$dirname/$rootname-$attempt.png"
+                    continue
+                end
+                convert "$filename" "$targetname"
+                break
+            end
+        case '*.webm'
+            set -l basename (basename $filename)
+            set -l dirname (dirname $filename)
+            set -l rootname (echo $basename | string split -f 1 -m 1 -r .)
+            set -l targetname "$dirname/$rootname.mp4"
+    
+            ffmpeg -i $filename -c:v libx264 -crf 24 $targetname
+        case '*'
+            echo "Neither webp nor webm, skipping."
+    end
+end