Add get_or_create_index method (#69)

Author: curquiza

README.md

@@ -125,6 +125,9 @@ You can check out [the API documentation](https://docs.meilisearch.com/reference
 client.create_index('books')
 # Create an index and give the primary-key
 client.create_index('books', primaryKey: 'book_id')
+# Create an index or get the already existing one
+client.create_index('books')
+client.get_or_create_index('books', primaryKey: 'book_id')
 ```
 
 #### List all indexes <!-- omit in toc -->

lib/meilisearch/client.rb

@@ -23,6 +23,15 @@ def create_index(index_uid, options = {})
       index_object(res['uid'])
     end
 
+    def get_or_create_index(index_uid, options = {})
+      begin
+        create_index(index_uid, options)
+      rescue ApiError => e
+        raise e unless e.code == 'index_already_exists'
+      end
+      index_object(index_uid)
+    end
+
     def delete_index(index_uid)
       index_object(index_uid).delete
     end

spec/meilisearch/client/indexes_spec.rb

@@ -7,6 +7,8 @@
     @uid1 = 'uid1'
     @uid2 = 'uid2'
     @uid3 = 'uid3'
+    @uid4 = 'uid4'
+    @uid5 = 'uid5'
     @primary_key = 'objectId'
   end
 
@@ -31,6 +33,31 @@
     expect(index.primary_key).to eq(@primary_key)
   end
 
+  it 'creates an new index with get_or_create_index method' do
+    index = @client.get_or_create_index(@uid4)
+    expect(@client.indexes.count).to eq(4)
+    expect(@client.index(@uid4).uid).to eq(index.uid)
+    expect(@client.index(@uid4).uid).to eq(@uid4)
+    expect(@client.index(@uid4).primary_key).to be_nil
+  end
+
+  it 'creates an new index with get_or_create_index method and a primary-key' do
+    index = @client.get_or_create_index(@uid5, primaryKey: 'title')
+    expect(@client.indexes.count).to eq(5)
+    expect(@client.index(@uid5).uid).to eq(index.uid)
+    expect(@client.index(@uid5).uid).to eq(@uid5)
+    expect(@client.index(@uid5).primary_key).to eq(index.primary_key)
+    expect(@client.index(@uid5).primary_key).to eq('title')
+  end
+
+  it 'get an already existing index with get_or_create_index method' do
+    index = @client.get_or_create_index(@uid5)
+    expect(@client.indexes.count).to eq(5)
+    expect(@client.index(@uid5).uid).to eq(index.uid)
+    expect(@client.index(@uid5).uid).to eq(@uid5)
+    expect(@client.index(@uid5).primary_key).to eq('title')
+  end
+
   it 'fails to create an index with an uid already taken' do
     expect do
       @client.create_index(@uid1)
@@ -46,9 +73,9 @@
   it 'gets list of indexes' do
     response = @client.indexes
     expect(response).to be_a(Array)
-    expect(response.count).to eq(3)
+    expect(response.count).to eq(5)
     uids = response.map { |elem| elem['uid'] }
-    expect(uids).to contain_exactly(@uid1, @uid2, @uid3)
+    expect(uids).to contain_exactly(@uid1, @uid2, @uid3, @uid4, @uid5)
   end
 
   it 'shows a specific index' do
@@ -72,6 +99,10 @@
     expect { @client.show_index(@uid2) }.to raise_index_not_found_meilisearch_api_error
     expect(@client.delete_index(@uid3)).to be_nil
     expect { @client.show_index(@uid3) }.to raise_index_not_found_meilisearch_api_error
+    expect(@client.delete_index(@uid4)).to be_nil
+    expect { @client.show_index(@uid4) }.to raise_index_not_found_meilisearch_api_error
+    expect(@client.delete_index(@uid5)).to be_nil
+    expect { @client.show_index(@uid5) }.to raise_index_not_found_meilisearch_api_error
     expect(@client.indexes.count).to eq(0)
   end