Begin populating search index with API docs

With these changes, we populate the search index with all instance
methods present in the latest version of Atom. Next up, we'll need to
add classes, class methods, and instance properties to the search index.

Co-Authored-By: Antonio Scandurra <[email protected]>

content/search.json

@@ -13,6 +13,21 @@
         },
       <% end %>
     <% end %>
+
+    <% latest_atom_version_apis.each do |klass| %>
+      <% klass.fetch('instanceMethods', []).each do |instance_method| %>
+        <% body = compress(safe_embed(instance_method['description'])) %>
+        {
+          "title": "<%= klass['name'] %>::<%= instance_method['name'] %>",
+          "category": "",
+          "category_url": "",
+          "url": "/api/<%= latest_atom_version_number %>/<%= klass['name'] %>/#instance-<%= instance_method['name'] %>",
+          "body": "<%= body %>",
+          "excerpt": "<%= body[0..140] %>…"
+        },
+      <% end %>
+    <% end %>
+
     {}
   ]
 }

lib/helpers.rb

@@ -5,6 +5,7 @@
 require 'active_support/core_ext/string'
 
 require_relative 'chapters'
+require_relative 'search'
 require_relative 'sections'
 require_relative 'strings'
 

lib/search.rb

@@ -0,0 +1,19 @@
+require('json')
+
+def latest_atom_version_apis
+  items = @items.find_all("/api/v#{latest_atom_version_number}/*.json")
+  items.map { |item| JSON.parse(File.read(item.raw_filename)) }
+end
+
+def latest_atom_version_number
+  @latest_atom_version_number ||= begin
+    versions = @items.find_all('/api/*/*.json').map { |item| item.path.split('/')[2] }.uniq
+
+    exploded_version_numbers = versions.map { |version|
+      version_without_prefix = version[1..-1]
+      version_without_prefix.split('.')
+    }
+
+    exploded_version_numbers.sort.last.join('.')
+  end
+end