feat(new): rss + batch

1 files changed, 62 insertions, 0 deletions

diff --git a/new/lib/crys/pages_db_manager.rb b/new/lib/crys/pages_db_manager.rb
new file mode 100644
index 0000000..6a5e71c
--- /dev/null
+++ b/new/lib/crys/pages_db_manager.rb
@@ -0,0 +1,62 @@
+module Crys
+  class PagesDbManager
+    PAGES_KEY = :pages
+    PAGE = Struct.new(:filename, :file_path, :last_update, :in_rss, keyword_init: true) 
+
+    def db_path
+    end
+
+    def add_page(processor)
+      @processor = processor
+      hash = Digest::MD5.hexdigest(processor.file_path)
+      known_page = known_page(hash)
+
+      upsert_db(hash, known_page)
+      save_db
+    end
+
+    def pages
+      db.fetch(:pages).map do | _, data|
+        PAGE.new(data)
+      end
+    end
+
+    private
+
+    attr_reader :hash, :processor
+
+
+    def db
+      @db ||= YAML.load_file(
+        db_path,
+        permitted_classes: [Time, Symbol]
+      )
+    end
+
+    def upsert_db(hash, known_page)
+      if known_page
+        record = PAGE.new(known_page)
+      else
+        record = PAGE.new(
+          filename: processor.filename,
+          file_path: processor.file_path,
+          in_rss: true
+        )
+      end
+
+      record.last_update = Time.now
+
+      @db[PAGES_KEY][hash] = record.to_h
+    end
+
+    def save_db
+      File.open(db_path, 'w') do |f|
+        f.write db.to_yaml
+      end
+    end
+
+    def known_page(hash)
+      db[PAGES_KEY][hash]
+    end
+  end
+end