From 7b20d076fbc5e09ba82c8040517b3c57ed592efe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Arist=C3=B3teles?= <aristotelesbr@gmail.com>
Date: Sat, 23 Mar 2024 20:40:34 -0300
Subject: [PATCH] add examples

---
 .DS_Store                     | Bin 0 -> 6148 bytes
 app.rb                        |   1 -
 examples/001.ru               |  19 ++++++++++++++
 examples/002.ru               |  28 ++++++++++++++++++++
 examples/003.ru               |  46 ++++++++++++++++++++++++++++++++
 examples/004.ru               |  48 ++++++++++++++++++++++++++++++++++
 examples/gurupi_middleware.rb |  15 +++++++++++
 7 files changed, 156 insertions(+), 1 deletion(-)
 create mode 100644 .DS_Store
 create mode 100644 examples/001.ru
 create mode 100644 examples/002.ru
 create mode 100644 examples/003.ru
 create mode 100644 examples/004.ru
 create mode 100644 examples/gurupi_middleware.rb

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
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diff --git a/app.rb b/app.rb
index 3cf48fa..93fb1d2 100644
--- a/app.rb
+++ b/app.rb
@@ -1,7 +1,6 @@
 require 'rack'
 require 'sqlite3'
 require 'erb'
-require 'json'
 
 # Rack application
 #
diff --git a/examples/001.ru b/examples/001.ru
new file mode 100644
index 0000000..a90cd25
--- /dev/null
+++ b/examples/001.ru
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require 'bundler/inline'
+
+gemfile do
+  source 'https://rubygems.org'
+  gem 'rack'
+end
+
+require 'rack'
+
+app =
+  proc do |_env|
+    [200, { 'content-type' => 'text/html' }, ['Hello, World!']]
+  end
+
+run app
+
+# curl -i "http://localhost:9292"
diff --git a/examples/002.ru b/examples/002.ru
new file mode 100644
index 0000000..d90d5fa
--- /dev/null
+++ b/examples/002.ru
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require 'bundler/inline'
+
+gemfile do
+  source 'https://rubygems.org'
+  gem 'rack'
+end
+
+require 'rack'
+
+class MyApp
+  def call(env)
+    request = Rack::Request.new(env)
+
+    case [request.request_method, request.path]
+    in ['GET', '/']
+      [200, { 'content-type' => 'text/plain' }, ['Home page']]
+    in ['POST', '/books']
+      [201, { 'content-type' => 'text/plain' }, ['The book was created']]
+    else [404, { 'content-type' => 'text/html' }, ['Not Found']]
+    end
+  end
+end
+
+run MyApp.new
+
+# curl -i -X POST http://localhost:9292/books
diff --git a/examples/003.ru b/examples/003.ru
new file mode 100644
index 0000000..11302d2
--- /dev/null
+++ b/examples/003.ru
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require 'bundler/inline'
+
+gemfile do
+  source 'https://rubygems.org'
+  gem 'rack'
+end
+
+require 'rack'
+
+class MyApp
+  def call(env)
+    request   = Rack::Request.new(env)
+    @response = Rack::Response.new
+
+    case [request.request_method, request.path]
+    in ['GET', '/']
+      @response.status = 200
+      @response['content-type'] = 'text/plain'
+      @response.write('Home page')
+
+      response.finish
+    in ['POST', '/books']
+      @response.status = 201
+      @response['content-type'] = 'text/plain'
+      @response.write('The book was created')
+
+      @response.finish
+    else not_found
+    end
+  end
+
+  def not_found
+    @response.status = 404
+    @response['content-type'] = 'text/plain'
+    @response.write('Not Found')
+
+    @response.finish
+  end
+end
+
+run MyApp.new
+
+# curl -i http://localhost:9292/
+# curl -i -X POST http://localhost:9292/books
diff --git a/examples/004.ru b/examples/004.ru
new file mode 100644
index 0000000..cff8e18
--- /dev/null
+++ b/examples/004.ru
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+require 'bundler/inline'
+
+gemfile do
+  source 'https://rubygems.org'
+  gem 'rack'
+end
+
+require 'rack'
+require_relative 'gurupi_middleware'
+
+class MyApp
+  def call(env)
+    request   = Rack::Request.new(env)
+    @response = Rack::Response.new
+
+    case [request.request_method, request.path]
+    in ['GET', '/']
+      @response.status = 200
+      @response['content-type'] = 'text/plain'
+      @response.write('Home page')
+
+      response.finish
+    in ['POST', '/books']
+      @response.status = 201
+      @response['content-type'] = 'text/plain'
+      @response.write('The book was created')
+
+      @response.finish
+    else not_found
+    end
+  end
+
+  def not_found
+    @response.status = 404
+    @response['content-type'] = 'text/plain'
+    @response.write('Not Found')
+
+    @response.finish
+  end
+end
+
+use GurupiMiddleware
+
+run MyApp.new
+
+
diff --git a/examples/gurupi_middleware.rb b/examples/gurupi_middleware.rb
new file mode 100644
index 0000000..94d984f
--- /dev/null
+++ b/examples/gurupi_middleware.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class GurupiMiddleware
+  def initialize(app)
+    @app = app
+  end
+
+  def call(env)
+    status, headers, body = @app.call(env)
+
+    headers['x-gurupi'] = 'Gurupi'
+
+    [status, headers, body]
+  end
+end