initial commit

3 files changed, 261 insertions, 0 deletions

diff --git a/src/guff.cr b/src/guff.cr
new file mode 100644
index 0000000..7e32bfc
--- /dev/null
+++ b/src/guff.cr
@@ -0,0 +1,160 @@
+require "sqlite3"
+require "http/server"
+require "./guff/*"
+
+module Guff
+  class Database < ::SQLite3::Database
+    # TODO (add table_exists?)
+  end
+
+  class Model
+    getter :db
+
+    def initialize(@config : Config)
+      # create site database
+      db_path = "%s/site.db" % [config["data"]]
+      @db = Database.new(db_path)
+    end
+  end
+
+  class Handler < ::HTTP::Handler
+    getter :model
+    getter :config
+
+    def initialize(@model : Model, @config : Config)
+    end
+
+    def call(context : HTTP::Server::Context)
+      # do nothing by default
+      call_next(context)
+    end
+  end
+
+
+  class BlogHandler < Handler
+    MATCHES = [%r{
+      ^/
+
+      # match YYYY/MM/DD/SLUG.html
+      (?<year>\d{4})
+      /
+      (?<month>\d{2})
+      /
+      (?<day>\d{2})
+      /
+      (?<slug>[a-z0-9._-]+)
+      \.html
+
+      $
+    }x, %r{
+      ^/
+
+      # match YYYY/MM/DD
+      (?<year>\d{4})
+      /
+      (?<month>\d{2})
+      /
+      (?<day>\d{2})
+      /?
+
+      $
+    }x, %r{
+      ^/
+
+      # match YYYY/MM
+      (?<year>\d{4})
+      /
+      (?<month>\d{2})
+      /?
+
+      $
+    }x, %r{
+      ^/
+
+      # match YYYY
+      (?<year>\d{4})
+      /?
+
+      $
+    }x, %r{
+      ^/
+
+      # match index
+      blog/?
+      |
+
+      $
+    }x]
+
+    def call(context : HTTP::Server::Context)
+      path = context.request.path || ""
+      if md = MATCHES.reduce(nil) { |r, m| r || m.match(path) }
+        context.response.puts "blog match: %s" % [md.to_s]
+      else
+        call_next(context)
+      end
+    end
+  end
+
+  class SlugHandler < Handler
+    MOCK_SLUGS = {
+      "foo": "test slug foo",
+      "bar": "test slug bar",
+      "baz": "test slug baz",
+    }
+
+    def call(context : HTTP::Server::Context)
+      puts "SlugHandler: path = %s" % [context.request.path]
+      call_next(context)
+    end
+  end
+
+  class Server
+    def self.run(model : Model, config : Config)
+      new(model, config).run
+    end
+
+    def initialize(@model : Model, @config : Config)
+      # create server
+      @server = HTTP::Server.new(
+        config["host"],
+        config["port"].to_i,
+        get_handlers(model, config)
+      ) do |context|
+        context.response.puts "asdf"
+      end
+    end
+
+    def run
+      puts "listening on %s:%s" % %w{host port}.map { |k| @config[k] }
+      @server.listen
+    end
+
+    private def get_handlers(
+      model : Model,
+      config : Config
+    ) : Array(HTTP::Handler)
+      @handlers ||= [
+        HTTP::ErrorHandler.new,
+        HTTP::LogHandler.new,
+        HTTP::DeflateHandler.new,
+        BlogHandler.new(model, config),
+        SlugHandler.new(model, config),
+        HTTP::StaticFileHandler.new(config["public"]),
+      ]
+    end
+  end
+
+  def self.run(app, args)
+    # parse env and cli options
+    config = Config.new(app, args)
+
+    # create model
+    model = Model.new(config)
+
+    # create server
+    Server.run(model, config)
+  end
+end
+
+Guff.run($0, ARGV)
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