initial commit

app/controllers/start_flow_controller.rb

@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+class StartFlowController < ApplicationController
+  layout 'flow'
+
+  skip_before_action :authenticate_user!
+
+  before_action :load_flow
+
+  def show
+    @submission = @flow.submissions.new
+  end
+
+  def update
+    @submission = @flow.submissions.find_or_initialize_by(
+      deleted_at: nil, **submission_params
+    )
+
+    if @submission.completed_at?
+      redirect_to start_flow_completed_path(@flow.slug, email: submission_params[:email])
+    else
+      @submission.assign_attributes(
+        opened_at: Time.current,
+        ip: request.remote_ip,
+        ua: request.user_agent
+      )
+
+      if @submission.save
+        redirect_to submit_flow_path(@submission.slug)
+      else
+        render :show
+      end
+    end
+  end
+
+  def completed
+    @submission = @flow.submissions.find_by(email: params[:email])
+  end
+
+  private
+
+  def submission_params
+    params.require(:submission).permit(:email)
+  end
+
+  def load_flow
+    slug = params[:slug] || params[:start_flow_slug]
+
+    @flow = Flow.find_by!(slug:)
+  end
+end