wip: order checkout

app/models/order.rb

@@ -0,0 +1,93 @@
+class Order < ApplicationRecord
+  # === Constants ===
+  DRAFT_EXPIRY_TIME = 30.minutes
+  MAX_PAYMENT_ATTEMPTS = 3
+
+  # === Associations ===
+  belongs_to :user
+  belongs_to :event
+  has_many :tickets, dependent: :destroy
+
+  # === Validations ===
+  validates :user_id, presence: true
+  validates :event_id, presence: true
+  validates :status, presence: true, inclusion: {
+    in: %w[draft pending_payment paid completed cancelled expired]
+  }
+  validates :total_amount_cents, presence: true,
+    numericality: { greater_than_or_equal_to: 0 }
+  validates :payment_attempts, presence: true,
+    numericality: { greater_than_or_equal_to: 0 }
+
+  # === Scopes ===
+  scope :draft, -> { where(status: "draft") }
+  scope :active, -> { where(status: %w[paid completed]) }
+  scope :expired_drafts, -> { draft.where("expires_at < ?", Time.current) }
+  scope :can_retry_payment, -> {
+    draft.where("payment_attempts < ? AND expires_at > ?",
+                MAX_PAYMENT_ATTEMPTS, Time.current)
+  }
+
+  before_validation :set_expiry, on: :create
+
+  # === Instance Methods ===
+
+  # Total amount in euros (formatted)
+  def total_amount_euros
+    total_amount_cents / 100.0
+  end
+
+  # Check if order can be retried for payment
+  def can_retry_payment?
+    draft? && payment_attempts < MAX_PAYMENT_ATTEMPTS && !expired?
+  end
+
+  # Check if order is expired
+  def expired?
+    expires_at.present? && expires_at < Time.current
+  end
+
+  # Mark order as expired if it's past expiry time
+  def expire_if_overdue!
+    return unless draft? && expired?
+    update!(status: "expired")
+  end
+
+  # Increment payment attempt counter
+  def increment_payment_attempt!
+    update!(
+      payment_attempts: payment_attempts + 1,
+      last_payment_attempt_at: Time.current
+    )
+  end
+
+  # Check if draft is about to expire (within 5 minutes)
+  def expiring_soon?
+    return false unless draft? && expires_at.present?
+    expires_at <= 5.minutes.from_now
+  end
+
+  # Mark order as paid and activate all tickets
+  def mark_as_paid!
+    transaction do
+      update!(status: "paid")
+      tickets.update_all(status: "active")
+    end
+  end
+
+  # Calculate total from tickets
+  def calculate_total!
+    update!(total_amount_cents: tickets.sum(:price_cents))
+  end
+
+  private
+
+  def set_expiry
+    return unless status == "draft"
+    self.expires_at = DRAFT_EXPIRY_TIME.from_now if expires_at.blank?
+  end
+
+  def draft?
+    status == "draft"
+  end
+end