can upload file to datagouv

app/lib/api_datagouv/api.rb

@@ -0,0 +1,47 @@
+class APIDatagouv::API
+  class RequestFailed < StandardError
+    def initialize(url, response)
+      msg = <<-TEXT
+        HTTP error code: #{response.code}
+        #{response.body}
+      TEXT
+
+      super(msg)
+    end
+  end
+
+  class << self
+    def upload(path)
+      io = File.new(path, 'r')
+      response = Typhoeus.post(
+        datagouv_upload_url,
+        body: {
+          file: io
+        },
+        headers: { "X-Api-Key" => datagouv_secret[:api_key] }
+      )
+      io.close
+
+      if response.success?
+        response.body
+      else
+        raise RequestFailed.new(datagouv_upload_url, response)
+      end
+    end
+
+    private
+
+    def datagouv_upload_url
+      [
+        datagouv_secret[:api_url],
+        "/datasets/", datagouv_secret[:ds_demarches_publiques_dataset],
+        "/resources/", datagouv_secret[:ds_demarches_publiques_resource],
+        "/upload/"
+      ].join
+    end
+
+    def datagouv_secret
+      Rails.application.secrets.datagouv
+    end
+  end
+end

spec/lib/api_datagouv/api_spec.rb

@@ -0,0 +1,28 @@
+describe APIDatagouv::API do
+  describe '#upload' do
+    let(:subject) { APIDatagouv::API.upload(Tempfile.new.path) }
+
+    before do
+      stub_request(:post, /https:\/\/www.data.gouv.fr\/api/)
+        .to_return(body: body, status: status)
+    end
+
+    context "when response ok" do
+      let(:status) { 200 }
+      let(:body) { "ok" }
+
+      it 'returns body response' do
+        expect(subject).to eq body
+      end
+    end
+
+    context "when responds with error" do
+      let(:status) { 400 }
+      let(:body) { "oops ! There is a problem..." }
+
+      it 'raise error' do
+        expect { subject }.to raise_error(APIDatagouv::API::RequestFailed)
+      end
+    end
+  end
+end