added config file creation

src/kotatsu.cr

@@ -5,6 +5,23 @@ require "http/server"
 
 module Kotatsu
   VERSION = "0.1.0"
+  CONFIG_DIR = Path.new(Path.home, ".config", "kotatsu")
+  CONFIG_FILE = Path.new(CONFIG_DIR, "config.json")
+
+  def self.makeConfig(file, dir)
+    puts "Creating new config file in #{file}"
+    if Dir.exists?(dir) == false
+      Dir.mkdir(dir)
+      if Dir.exists?(dir) == false
+        STDERR.puts "ERROR! Could not create directory: #{dir}"
+      end
+    end
+    File.write(file, VERSION)
+    if File.exists?(file) == false
+      STDERR.puts "ERROR! Could not create file: #{file}"
+      exit(1)
+    end
+  end
 
   OptionParser.parse do |parser|
     parser.banner = "Kotatsu - Easy to configure server start page"
@@ -26,6 +43,11 @@ module Kotatsu
     end
   end
 
+  if File.exists?(CONFIG_FILE) == false
+    puts "Could not find config file"
+    makeConfig(CONFIG_FILE, CONFIG_DIR)
+  end
+
   webserv = HTTP::Server.new do |context|
     context.response.content_type = "text/plain"
     context.response.print "Running kotatsu #{VERSION}"