From 1c75517bf1dcf6cef4a85b8d938eebf92d7b03d0 Mon Sep 17 00:00:00 2001
From: AlexanderPavlenko <AlexanderPavlenko@users.noreply.github.com>
Date: Tue, 10 Nov 2020 19:00:11 +0300
Subject: [PATCH] adds previews for GIF pages

---
 .gitignore   |   1 +
 build.rb     |  14 +++++++++++---
 gif-mark.png | Bin 0 -> 2150 bytes
 3 files changed, 12 insertions(+), 3 deletions(-)
 create mode 100644 gif-mark.png

diff --git a/.gitignore b/.gitignore
index a611614..7c0d896 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 *.gif
 *.png
 *.cbz
+!gif-mark.png
diff --git a/build.rb b/build.rb
index b68cee4..e079706 100755
--- a/build.rb
+++ b/build.rb
@@ -11,12 +11,20 @@
 File.open('index.txt') do |f|
   f.each_line.map(&:strip).reject { |url| url.empty? }.each_with_index do |url, i|
     filename = "#{i}_#{File.basename(url)}"
+    filename_cli = Shellwords.shellescape(filename)
+    format = File.extname(filename)
     puts filename
     unless File.exists?(filename)
-      puts "downloading #{filename}"
-      system %(curl #{Shellwords.shellescape(url)} --retry 5 -o #{Shellwords.shellescape(filename)})
+      system %(curl #{Shellwords.shellescape(url)} --retry 5 -o #{filename_cli})
+    end
+    system %(ln -f #{filename_cli} drugsandwires.fail/#{i.to_s.rjust(4, '0')}#{format})
+    if format.downcase == '.gif'
+      filename_preview = "#{filename_cli[0..-4]}jpg"
+      unless File.exists?(filename_preview)
+        system %(ffmpeg -i #{filename_cli} -i gif-mark.png -filter_complex "overlay=0:0" -frames:v 1 -qscale:v 3 -y #{filename_preview})
+      end
+      system %(ln -f #{filename_preview} drugsandwires.fail/#{i.to_s.rjust(4, '0')}.jpg)
     end
-    system %(ln -f #{Shellwords.shellescape(filename)} drugsandwires.fail/#{i.to_s.rjust(4, '0')}#{File.extname(filename)})
   end
 end
 
diff --git a/gif-mark.png b/gif-mark.png
new file mode 100644
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GIT binary patch
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