2 files changed, 101 insertions, 0 deletions
diff --git a/src/guff/config.cr b/src/guff/config.cr
new file mode 100644
index 0000000..6021c63
--- /dev/null
+++ b/src/guff/config.cr
@@ -0,0 +1,98 @@
+require "option_parser"
+
+module Guff
+  class Config
+    DEFAULTS = {
+      "host":         "localhost",
+      "port":         "8989",
+      "data":         "./data",
+      "public":       "./public",
+      "environment":  "development",
+    }
+
+    DIRS = %w{
+      data
+      public
+    }
+
+    def initialize(app, args)
+      @data = defaults
+      parse_args(app, args)
+    end
+
+    def [](key : String) : String
+      @data[key]
+    end
+
+    def []=(key : String, val : String | Nil) : String
+      @data[key] = val
+    end
+
+    private def defaults : Hash(String, String)
+      DEFAULTS.merge(DEFAULTS.keys.reduce({} of String => String) do |r, key|
+        env_key = "GUFF_" + key.upcase
+        r[key] = ENV[env_key] if ENV.has_key?(env_key)
+        r
+      end)
+    end
+
+    private def parse_args(app, args)
+      OptionParser.parse(args) do |p|
+        p.on(
+          "-h HOST",
+          "--host HOST",
+          "Host (defaults to \"localhost\")."
+        ) do |host|
+          self["host"] = host
+        end
+
+        p.on(
+          "-p PORT",
+          "--port PORT",
+          "Port (defaults to 8989)."
+        ) do |port|
+          self["port"] = port
+        end
+
+        p.on(
+          "-d PATH",
+          "--data-dir PATH",
+          "Path to data directory (defaults to \"./data\")."
+        ) do |path|
+          self["data"] = path
+        end
+        
+        p.on(
+          "-u PATH",
+          "--public-dir PATH",
+          "Path to public directory (defaults to \"./public\")."
+        ) do |path|
+          self["public"] = path
+        end
+
+        p.on(
+          "-e ENV",
+          "--environment ENV",
+          "Environment (defaults to \"development\")."
+        ) do |path|
+          self["public"] = path
+        end
+
+
+        p.on(
+          "--help",
+          "Print usage"
+        ) do 
+          puts p.to_s
+        end
+      end
+
+      # expand output directory paths and create them
+      %w{data public}.each do |key|
+        self[key] = File.expand_path(File.join(File.dirname(app), self[key]))
+        # puts "DEBUG: %s: %s" % [key, self[key]]
+        Dir.mkdir(self[key], 0o770) unless File.directory?(self[key])
+      end
+    end
+  end
+end
diff --git a/src/guff/version.cr b/src/guff/version.cr
new file mode 100644
index 0000000..898a0d6
--- /dev/null
+++ b/src/guff/version.cr
@@ -0,0 +1,3 @@
+module Guff
+  VERSION = "0.1.0"
+end