Add csv export for Pressensor import

Resolves #102

Author: miharekar

app/controllers/api/shots_controller.rb

@@ -30,7 +30,9 @@ def show
 
     def profile
       with_shot do |shot|
-        if params[:format] == "json" && shot.information&.json_profile_fields.present?
+        if params[:format] == "csv"
+          send_data shot.information&.csv_profile, filename: "#{shot.profile_title} from Visualizer.csv", type: "text/csv", disposition: "attachment"
+        elsif params[:format] == "json" && shot.information&.json_profile_fields.present?
           render json: shot.information&.json_profile
         elsif shot.information&.tcl_profile_fields.present?
           send_data shot.information.tcl_profile, filename: "#{shot.profile_title} from Visualizer.tcl", type: "application/x-tcl", disposition: "attachment"

app/models/shot_information/profile.rb

@@ -1,5 +1,6 @@
 module ShotInformation::Profile
   JSON_PROFILE_KEYS = %w[title author notes beverage_type steps tank_temperature target_weight target_volume target_volume_count_start legacy_profile_type type lang hidden reference_file changes_since_last_espresso version].freeze
+  CSV_PROFILE_HEADERS = %w[information_type elapsed pressure current_total_shot_weight flow_in flow_out water_temperature_boiler water_temperature_in water_temperature_basket metatype metadata comment].freeze
 
   def tcl_profile_fields
     @tcl_profile_fields ||= profile_fields.except("json")
@@ -35,4 +36,30 @@ def json_profile
 
     JSON.pretty_generate(json)
   end
+
+  def csv_profile
+    CSV.generate do |csv|
+      csv << CSV_PROFILE_HEADERS
+
+      csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, "Name", shot.profile_title, "text"]
+      csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, "Date", shot.start_time.iso8601, "ISO8601 formatted date"]
+      csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, "Roasting Date", Date.parse(shot.roast_date)&.iso8601, "ISO8601 formatted date"] if shot.roast_date.present?
+
+      Parsers::SepCsv::MAPPING.each do |key, value|
+        metadata_value = extra[value]
+        next if metadata_value.blank?
+
+        csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, key, metadata_value, "text"]
+      end
+
+      csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, "Attribution", "Visualizer", nil]
+      csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, "Software", "Visualizer", nil]
+      csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, "Url", "https://visualizer.coffee/shots/#{shot.id}", nil]
+      csv << ["meta", nil, nil, nil, nil, nil, nil, nil, nil, "Export version", "1.0.0", nil]
+
+      timeframe.each.with_index do |time, i|
+        csv << ["moment", time, data.dig("espresso_pressure", i), data.dig("espresso_weight", i), data.dig("espresso_flow", i), data.dig("espresso_flow_weight", i), nil, data.dig("espresso_temperature_mix", i), data.dig("espresso_temperature_basket", i), nil, nil, "Visualizer"]
+      end
+    end
+  end
 end

app/views/shots/_share.html.erb

@@ -1,3 +1,10 @@
+<div class="mr-3">
+  <a class="inline-flex px-4 py-2 text-sm bg-white border rounded-md shadow-sm cursor-pointer border-neutral-300 dark:border-neutral-600 dark:bg-neutral-800 hover:bg-neutral-50 dark:hover:bg-neutral-900" href="<%= api_shot_profile_path(@shot, format: :csv) %>" title="Download CSV profile" target="_blank">
+    <svg class="w-4 h-4 -ml-1 -mr-1 text-neutral-500 dark:text-neutral-300" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16" fill="currentColor">
+      <path fill-rule="evenodd" d="M15 11a2 2 0 0 1-2 2H3a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2v6ZM7.25 7.5a.5.5 0 0 0-.5-.5H3a.5.5 0 0 0-.5.5V8a.5.5 0 0 0 .5.5h3.75a.5.5 0 0 0 .5-.5v-.5Zm1.5 3a.5.5 0 0 1 .5-.5H13a.5.5 0 0 1 .5.5v.5a.5.5 0 0 1-.5.5H9.25a.5.5 0 0 1-.5-.5v-.5ZM13.5 8v-.5A.5.5 0 0 0 13 7H9.25a.5.5 0 0 0-.5.5V8a.5.5 0 0 0 .5.5H13a.5.5 0 0 0 .5-.5Zm-6.75 3.5a.5.5 0 0 0 .5-.5v-.5a.5.5 0 0 0-.5-.5H3a.5.5 0 0 0-.5.5v.5a.5.5 0 0 0 .5.5h3.75Z" clip-rule="evenodd" />
+    </svg>
+  </a>
+</div>
 <% if @shot.information&.tcl_profile_fields.present? %>
   <div class="mr-3">
     <a class="inline-flex px-4 py-2 text-sm bg-white border rounded-md shadow-sm cursor-pointer border-neutral-300 dark:border-neutral-600 dark:bg-neutral-800 hover:bg-neutral-50 dark:hover:bg-neutral-900" href="<%= api_shot_profile_path(@shot) %>" title="Download this profile" target="_blank">