Initial brief service

Gemfile

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+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+# gem "rails"
+
+gem "mechanize", "~> 2.8"
+
+gem "sinatra", "~> 2.1"

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    connection_pool (2.2.5)
+    domain_name (0.5.20190701)
+      unf (>= 0.0.5, < 1.0.0)
+    http-cookie (1.0.3)
+      domain_name (~> 0.5)
+    mechanize (2.8.1)
+      addressable (~> 2.7)
+      domain_name (~> 0.5, >= 0.5.20190701)
+      http-cookie (~> 1.0, >= 1.0.3)
+      mime-types (~> 3.0)
+      net-http-digest_auth (~> 1.4, >= 1.4.1)
+      net-http-persistent (>= 2.5.2, < 5.0.dev)
+      nokogiri (~> 1.11, >= 1.11.2)
+      rubyntlm (~> 0.6, >= 0.6.3)
+      webrick (~> 1.7)
+      webrobots (~> 0.1.2)
+    mime-types (3.3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2021.0225)
+    mini_portile2 (2.5.1)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
+    net-http-digest_auth (1.4.1)
+    net-http-persistent (4.0.1)
+      connection_pool (~> 2.2)
+    nokogiri (1.11.6)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    public_suffix (4.0.6)
+    racc (1.5.2)
+    rack (2.2.3)
+    rack-protection (2.1.0)
+      rack
+    ruby2_keywords (0.0.4)
+    rubyntlm (0.6.3)
+    sinatra (2.1.0)
+      mustermann (~> 1.0)
+      rack (~> 2.2)
+      rack-protection (= 2.1.0)
+      tilt (~> 2.0)
+    tilt (2.0.10)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.7.7)
+    webrick (1.7.0)
+    webrobots (0.1.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  mechanize (~> 2.8)
+  sinatra (~> 2.1)
+
+BUNDLED WITH
+   1.17.2

README.md

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+# brief
+
+Simple ruby service to obtain a title and description for a given url
+
+
+# Setup
+
+```
+bundle install
+```
+
+# Running
+
+```
+ruby app.rb
+```
+
+And visit the `/summary` route of `localhost:4567`
+
+```
+http://localhost:4567/summary?url=https://www.nytimes.com/article/best-movies-netflix.html
+```

app.rb

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+require 'sinatra'
+require 'mechanize'
+
+# Find a description from <meta> tags
+def meta_description(page)
+  description_meta_tag = 
+    page.search("meta[property='og:description']")[0] ||
+    page.search("meta[property='twitter:description']")[0] ||
+    page.search("meta[name='description']")[0]
+
+  description_meta_tag&.attribute("content")&.value
+end
+
+# Truncate the text of the first <article>
+def article_description(page)
+  article = page.search("article")[0]
+  article.text[0..500] if article
+end
+
+
+get '/summary' do
+  url = params[:url]
+  mech = Mechanize.new
+  page = mech.get(url)
+
+  title = page.title
+
+  description = meta_description(page) || article_description(page)
+
+  content_type :json
+  {url: url, title: title, description: description}.to_json
+end