Improve Owls value presentation in Item Getting Guide

app/assets/stylesheets/items/sources.sass

@@ -85,10 +85,11 @@
 			color: inherit
 
 	.owls-info-link
+		cursor: help
+
 		.owls-info-label
 			text-decoration-line: underline
 			text-decoration-style: dotted
-			cursor: help
 
 	/* For wearable items that belong to a specific set that all come together,
 	 * like a Paint Brush. */

app/helpers/items_helper.rb

@@ -156,6 +156,39 @@ module ItemsHelper
     "Last updated: #{date_str} (#{time_ago_str} ago)"
   end
 
+  NC_TRADE_VALUE_ESTIMATE_PATTERN = %r{
+    ^\s*
+    (?:
+      # Case 1: A single number
+      (?<single>[0-9]+)
+      |
+      # Case 2: A range from low to high
+      (?<low>[0-9]+)
+      \p{Dash_Punctuation}
+      (?<high>[0-9]+)
+    )
+    \s*$
+  }x
+  def nc_trade_value_is_estimate(nc_trade_value)
+    nc_trade_value.value_text.match?(NC_TRADE_VALUE_ESTIMATE_PATTERN)
+  end
+
+  # Try to parse the NC trade value's text into something styled a bit more
+  # nicely for our use case.
+  def nc_trade_value_estimate_text(nc_trade_value)
+    match = nc_trade_value.value_text.match(NC_TRADE_VALUE_ESTIMATE_PATTERN)
+    return nc_trade_value if match.nil?
+
+    match => {single:, low:, high:}
+    if single.present?
+      pluralize single.to_i, "capsule"
+    elsif low.present? && high.present?
+      "#{low}–#{high} capsules"
+    else
+      nc_trade_value
+    end
+  end
+
   def nc_total_for(items)
     items.map(&:current_nc_price).sum
   end

app/views/items/sources.html.haml

@@ -156,14 +156,21 @@
 - if @other_nc_items.present?
 	%h2 Neocash items (Capsules, events, retired, etc.)
 	:markdown
-		These items are part of the Neocash economy and can't be purchased with
-		Neopoints. We don't track all the details of how to get these items
-		right now! Sometimes they're available via packs or capsules or events
-		in the [NC Mall][mall]. Sometimes they're retired and can't be
-		purchased at all anymore, and can only be obtained via gifts or trades.
+		These items are part of the Neocash economy, but not directly for sale.
+		Sometimes they're available in the [NC Mall][mall], via special
+		bundles or events. Sometimes they're retired, and can only be obtained via
+		gifts or trades.
 
 		[mall]: https://ncmall.neopets.com/
 		
+	- if @other_nc_items.any?(&:nc_trade_value)
+		:markdown
+			The [Owls Value Guide][owls] often has more details about how to get
+			these items, and how much they're usually worth in the NC Trading
+			community. We've loaded their info here for you, too! Thanks, Owls team!
+
+			[owls]: https://www.neopets.com/~owls
+
 	%table.item-list
 		%thead
 			%td
@@ -174,11 +181,20 @@
 				= render "item_list_row", item: do
 					- content_for :subtitle, flush: true do
 						- if item.nc_trade_value.present?
-							= link_to "https://www.neopets.com/~owls",
-								class: "owls-info-link", target: "_blank",
-								title: 'Owls keeps track of approximate "capsule" values of NC items for trading. Items with similar values can often be traded for one another. This is an estimate, not a rule!' do
-								%span.owls-info-label Owls listing:
-								#{item.nc_trade_value.value_text}
+							- if nc_trade_value_is_estimate(item.nc_trade_value)
+								= link_to "https://www.neopets.com/~owls",
+									class: "owls-info-link", target: "_blank",
+									title: 'Owls keeps track of approximate "capsule" values of NC items for trading. Items with similar values can often be traded for one another. This is an estimate, not a rule!' do
+									%span.owls-info-label [Owls]
+									Estimated value:
+									= nc_trade_value_estimate_text(item.nc_trade_value)
+							- else
+								= link_to "https://www.neopets.com/~owls",
+									class: "owls-info-link", target: "_blank",
+									title: "Owls keeps track of how to get certain special items, even when there isn't a clear NC trade estimate." do
+									%span.owls-info-label [Owls]
+									Trade info:
+									#{item.nc_trade_value.value_text}
 
 					= button_link_to "NC Trades",
 						item_trades_path(item, type: "offering"),