- implement reader

src/mango.cr

@@ -32,6 +32,42 @@ get "/book/:title" do |env|
 	layout "title"
 end
 
+get "/reader/:title/:entry" do |env|
+	# We should save the reading progress, and ask the user if she wants to
+	# start over or resume. For now we just start from page 0
+	begin
+		title = library.get_title env.params.url["title"]
+		raise "" if title.nil?
+		entry = title.get_entry env.params.url["entry"]
+		raise "" if entry.nil?
+		env.redirect "/reader/#{title.title}/#{entry.title}/0"
+	rescue
+		env.response.status_code = 404
+	end
+end
+
+get "/reader/:title/:entry/:page" do |env|
+	imgs_each_page = 5
+	# here each :page contains `imgs_each_page` images
+	begin
+		title = library.get_title env.params.url["title"]
+		raise "" if title.nil?
+		entry = title.get_entry env.params.url["entry"]
+		raise "" if entry.nil?
+		page = env.params.url["page"].to_i
+		raise "" if page * imgs_each_page >= entry.pages
+
+		urls = ((page * imgs_each_page)...\
+			[entry.pages, (page + 1) * imgs_each_page].min) \
+			.map { |idx| "/api/page/#{title.title}/#{entry.title}/#{idx}" }
+		next_url = "/reader/#{title.title}/#{entry.title}/#{page + 1}"
+		next_url = nil if (page + 1) * imgs_each_page >= entry.pages
+		render "src/views/reader.ecr"
+	rescue
+		env.response.status_code = 404
+	end
+end
+
 get "/login" do |env|
 	render "src/views/login.ecr"
 end