save prices duration in db

app/frontend/src/javascript/models/price.ts

@@ -11,7 +11,8 @@ export interface Price {
   plan_id: number,
   priceable_type: string,
   priceable_id: number,
-  amount: number
+  amount: number,
+  duration: number // in minutes
 }
 
 export interface ComputePriceResult {

app/models/cart_item/reservation.rb

@@ -16,7 +16,7 @@ class CartItem::Reservation < CartItem::BaseItem
   end
 
   def price
-    base_amount = @reservable.prices.find_by(group_id: @customer.group_id, plan_id: @plan.try(:id)).amount
+    base_amount = @reservable.prices.find_by(group_id: @customer.group_id, plan_id: @plan.try(:id), duration: 60).amount
     is_privileged = @operator.privileged? && @operator.id != @customer.id
     prepaid = { minutes: PrepaidPackService.minutes_available(@customer, @reservable) }
 

app/views/api/prices/_price.json.jbuilder

@@ -1,2 +1,4 @@
-json.extract! price, :id, :group_id, :plan_id, :priceable_type, :priceable_id
+# frozen_string_literal: true
+
+json.extract! price, :id, :group_id, :plan_id, :priceable_type, :priceable_id, :duration
 json.amount price.amount / 100.0

app/views/api/prices/compute.json.jbuilder

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 json.price @amount[:total] / 100.00
 json.price_without_coupon @amount[:before_coupon] / 100.00
 if @amount[:elements]

app/views/api/prices/index.json.jbuilder

@@ -1 +1,3 @@
+# frozen_string_literal: true
+
 json.partial! 'api/prices/price', collection: @prices, as: :price

db/migrate/20211220143400_add_duration_to_price.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+# From this migration, we allow Prices to be configured by duration.
+# For example, a Price for a 30-minute session could be configured to be twice the price of a 60-minute session.
+# This is useful for things like "half-day" sessions, or full-day session when the price is different than the default hour-based price.
+class AddDurationToPrice < ActiveRecord::Migration[5.2]
+  def change
+    add_column :prices, :duration, :integer, default: 60
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_10_18_121822) do
+ActiveRecord::Schema.define(version: 2021_12_20_143400) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "fuzzystrmatch"
@@ -492,6 +492,7 @@ ActiveRecord::Schema.define(version: 2021_10_18_121822) do
     t.integer "weight"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.text "description"
   end
 
   create_table "plans", id: :serial, force: :cascade do |t|
@@ -554,6 +555,7 @@ ActiveRecord::Schema.define(version: 2021_10_18_121822) do
     t.integer "amount"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.integer "duration", default: 60
     t.index ["group_id"], name: "index_prices_on_group_id"
     t.index ["plan_id"], name: "index_prices_on_plan_id"
     t.index ["priceable_type", "priceable_id"], name: "index_prices_on_priceable_type_and_priceable_id"