Implement display logic

app/models/forms/export.rb

@@ -24,8 +24,9 @@ def to_csv
     # rubocop:disable Metrics/MethodLength, Metrics/BlockLength, Metrics/AbcSize, Metrics/PerceivedComplexity
     def to_xls
       # TODO
-      # Repeat groups with nested "begin/end repeat" and "begin/end group" lines
-      # skip logic with formatted info in "relevant" column using ${name} = ... syntax
+      # - Constraints
+      # - option set "levels"?
+      # - Make question types compatible with XLSForm, e.g., "long_text" should just be "text", "counter" does not exist, etc.
 
       book = Spreadsheet::Workbook.new
 
@@ -35,7 +36,7 @@ def to_xls
       settings = book.create_worksheet(name: "settings")
 
       # Write sheet headings at row index 0
-      questions.row(0).push("type", "name", "label", "required", "relevant")
+      questions.row(0).push("type", "name", "label", "required", "relevant", "constraint")
       choices.row(0).push("list_name", "name", "label")
       settings.row(0).push("form_title", "form_id", "version", "default_language")
 
@@ -95,7 +96,63 @@ def to_xls
           code_to_push = "#{q.full_dotted_rank}_#{q.code}"
 
           # Write the question row
-          questions.row(i + index_mod).push(type_to_push, code_to_push, q.name, q.required.to_s, "TODO")
+          questions.row(i + index_mod).push(type_to_push, code_to_push, q.name, q.required.to_s)
+        end
+
+        # if we have any relevant conditions, add them to the end of the row
+        if q.display_conditions.any?
+          # start building string of conditions to print
+          relevant_to_push = ""
+          concatenator = q.display_if == "all_met" ? "and" : "or"
+
+          # how many conditions?
+          dc_length = q.display_conditions.length
+
+          q.display_conditions.each_with_index do |dc, i|
+            # prep left side of expression
+            left_qing = Questioning.find(dc.left_qing_id)
+            left_to_push = "${#{left_qing.full_dotted_rank}_#{left_qing.code}}"
+
+            # prep right side of expression
+            if dc.right_side_is_qing?
+              right_qing = Questioning.find(dc.right_qing_id)
+              right_to_push = "${#{right_qing.full_dotted_rank}_#{right_qing.code}}"
+            else
+              # to respect XLSform rules, surround with single quotes unless it's a number
+              if Float(dc.value, exception: false).nil? # it's not a number
+                right_to_push = "'#{dc.value}'"
+              else
+                right_to_push = "#{dc.value}"
+              end
+            end
+
+            case dc.op
+            when "eq"
+              op = "="
+            when "neq"
+              op = "!="
+            when "lt"
+              op = "<"
+            when "leq"
+              op = "<="
+            when "gt"
+              op = ">"
+            when "geq"
+              op = ">="
+            end
+
+            # omit the concatenator on the last condition only
+            if i + 1 == dc_length
+              relevant_to_push = "#{relevant_to_push}#{left_to_push} #{op} #{right_to_push}"
+            else
+              relevant_to_push = "#{relevant_to_push}#{left_to_push} #{op} #{right_to_push} #{concatenator} "
+            end
+          end
+          questions.row(i + index_mod).push(relevant_to_push)
+        end
+
+        if q.constraints.any?
+          #TODO
         end
       end