From 1f494c5a6335e895e9baf20274ca898ab8f1f665 Mon Sep 17 00:00:00 2001
From: Anton Vakhrushev <a.vakhrushev@elama.ru>
Date: Thu, 3 Oct 2019 17:48:59 +0300
Subject: [PATCH] Add naive cli command router

---
 spec/command_router_spec.cr | 14 ++++++++++++++
 spec/resources_spec.cr      |  1 +
 src/cli/command_router.cr   | 17 +++++++++++++++++
 3 files changed, 32 insertions(+)
 create mode 100644 spec/command_router_spec.cr
 create mode 100644 spec/resources_spec.cr
 create mode 100644 src/cli/command_router.cr

diff --git a/spec/command_router_spec.cr b/spec/command_router_spec.cr
new file mode 100644
index 0000000..dfd2154
--- /dev/null
+++ b/spec/command_router_spec.cr
@@ -0,0 +1,14 @@
+require "./spec_helper"
+require "../src/cli/*"
+
+describe CLI::CommandRouter do
+  it "should handle simple command" do
+    router = CLI::CommandRouter.new
+    x = 10
+    router.add "plus" do
+      x += 5
+    end
+    router.handle "plus"
+    x.should eq 15
+  end
+end
diff --git a/spec/resources_spec.cr b/spec/resources_spec.cr
new file mode 100644
index 0000000..0ccaf75
--- /dev/null
+++ b/spec/resources_spec.cr
@@ -0,0 +1 @@
+require "./spec_helper"
diff --git a/src/cli/command_router.cr b/src/cli/command_router.cr
new file mode 100644
index 0000000..dc84da8
--- /dev/null
+++ b/src/cli/command_router.cr
@@ -0,0 +1,17 @@
+class CLI::CommandRouter
+  def initialize
+    @mappings = [] of {String, Proc(Nil)}
+  end
+
+  def add(route, &block)
+    @mappings.push({route, block})
+  end
+
+  def handle(command)
+    @mappings.each do |i|
+      if i[0] == command
+        i[1].call
+      end
+    end
+  end
+end