Billing: fatture manuali, profilo obbligatorio e piani Stripe mensile/annuale.

Rimuove link al portale Stripe in area cliente, aggiunge flusso admin per PDF
fattura e email, blocca checkout senza dati di fatturazione, allinea prezzi
a €4,90/€39,90 e €9,90/€69,90, locale italiano e documentazione deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/billing/stripe/price_catalog.rb

@@ -0,0 +1,74 @@
+module Billing
+  module Stripe
+    class PriceCatalog
+      INTERVALS = %w[monthly yearly].freeze
+      DEFAULT_INTERVAL = "yearly"
+
+      PRICING = {
+        "premium_light" => { "yearly" => "€39,90/anno", "monthly" => "€4,90/mese" },
+        "premium_full" => { "yearly" => "€69,90/anno", "monthly" => "€9,90/mese" }
+      }.freeze
+
+      class << self
+        def normalize_interval(value)
+          interval = value.to_s.presence || DEFAULT_INTERVAL
+          raise ArgumentError, "Intervallo non valido" unless INTERVALS.include?(interval)
+
+          interval
+        end
+
+        def price_id(plan_slug:, interval:)
+          interval = normalize_interval(interval)
+          id = price_id_for(plan_slug.to_s, interval)
+          raise "Price ID Stripe mancante per #{plan_slug} (#{interval})" if id.blank?
+
+          id
+        end
+
+        def configured?(plan_slug:, interval:)
+          price_id_for(plan_slug.to_s, normalize_interval(interval)).present?
+        end
+
+        def label(plan_slug:, interval:)
+          PRICING.dig(plan_slug.to_s, normalize_interval(interval)) || normalize_interval(interval)
+        end
+
+        def available_intervals(plan_slug:)
+          INTERVALS.select { |interval| configured?(plan_slug: plan_slug, interval: interval) }
+        end
+
+        def infer_from_price_id(price_id)
+          return nil if price_id.blank?
+
+          {
+            MatchLiveTv.stripe_premium_light_monthly_price_id => %w[premium_light monthly],
+            MatchLiveTv.stripe_premium_light_yearly_price_id => %w[premium_light yearly],
+            MatchLiveTv.stripe_premium_full_monthly_price_id => %w[premium_full monthly],
+            MatchLiveTv.stripe_premium_full_yearly_price_id => %w[premium_full yearly]
+          }.each do |configured_id, pair|
+            return pair if configured_id.present? && configured_id == price_id
+          end
+
+          nil
+        end
+
+        private
+
+        def price_id_for(plan_slug, interval)
+          case [plan_slug, interval]
+          when %w[premium_light monthly]
+            MatchLiveTv.stripe_premium_light_monthly_price_id
+          when %w[premium_light yearly]
+            MatchLiveTv.stripe_premium_light_yearly_price_id
+          when %w[premium_full monthly]
+            MatchLiveTv.stripe_premium_full_monthly_price_id
+          when %w[premium_full yearly]
+            MatchLiveTv.stripe_premium_full_yearly_price_id
+          else
+            nil
+          end
+        end
+      end
+    end
+  end
+end