phase002 complete

app/models/fuel_entry.rb

@@ -0,0 +1,18 @@
+class FuelEntry < ApplicationRecord
+  belongs_to :vehicle
+  belongs_to :updated_by_user, class_name: "User"
+
+  validates :odometer, presence: true, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
+  validates :gallons_pumped, presence: true, numericality: { greater_than: 0 }
+  validates :price_paid, presence: true, numericality: { greater_than: 0 }
+  validates :date, presence: true
+  validate :date_cannot_be_in_the_future
+
+  private
+
+  def date_cannot_be_in_the_future
+    return if date.blank? || date <= Date.current
+
+    errors.add(:date, "can't be in the future")
+  end
+end

app/models/maintenance_entry.rb

@@ -0,0 +1,30 @@
+class MaintenanceEntry < ApplicationRecord
+  belongs_to :vehicle
+  belongs_to :updated_by_user, class_name: "User"
+
+  validates :name, :notes, :date, presence: true
+  validates :odometer, presence: true, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
+  validates :cost, presence: true, numericality: { greater_than_or_equal_to: 0 }
+  validate :date_cannot_be_in_the_future
+  validate :name_matches_vehicle_schedule
+
+  private
+
+  def date_cannot_be_in_the_future
+    return if date.blank? || date <= Date.current
+
+    errors.add(:date, "can't be in the future")
+  end
+
+  def name_matches_vehicle_schedule
+    return if vehicle.blank? || name.blank?
+
+    scheduled = vehicle.maintenance_schedules.any? do |schedule|
+      schedule.maintenance_type.casecmp?(name)
+    end
+    scheduled ||= vehicle.maintenance_schedules.where("lower(maintenance_type) = ?", name.downcase).exists? if vehicle.persisted?
+    return if scheduled
+
+    errors.add(:name, "must match a maintenance schedule for the vehicle")
+  end
+end

app/models/maintenance_schedule.rb

@@ -0,0 +1,7 @@
+class MaintenanceSchedule < ApplicationRecord
+  belongs_to :vehicle
+
+  validates :maintenance_type, presence: true, uniqueness: { scope: :vehicle_id, case_sensitive: false }
+  validates :mileage_interval, presence: true, numericality: { only_integer: true, greater_than: 0 }
+  validates :time_interval, presence: true, numericality: { only_integer: true, greater_than: 0 }
+end

app/models/user.rb

@@ -0,0 +1,15 @@
+class User < ApplicationRecord
+  has_many :fuel_entries, foreign_key: :updated_by_user_id, dependent: :restrict_with_error, inverse_of: :updated_by_user
+  has_many :maintenance_entries, foreign_key: :updated_by_user_id, dependent: :restrict_with_error, inverse_of: :updated_by_user
+
+  before_validation :normalize_email
+
+  validates :name, presence: true
+  validates :email, presence: true, uniqueness: { case_sensitive: false }
+
+  private
+
+  def normalize_email
+    self.email = email.to_s.strip.downcase if email.present?
+  end
+end

app/models/vehicle.rb

@@ -0,0 +1,22 @@
+class Vehicle < ApplicationRecord
+  has_many :maintenance_schedules, dependent: :restrict_with_error
+  has_many :fuel_entries, dependent: :restrict_with_error
+  has_many :maintenance_entries, dependent: :restrict_with_error
+
+  before_validation :normalize_vin
+
+  validates :make, :model, :color, :vin, :licence_plate, presence: true
+  validates :vin, uniqueness: true
+  validates :licence_plate, uniqueness: { case_sensitive: false }
+  validates :year, presence: true,
+    numericality: { only_integer: true, greater_than_or_equal_to: 1980, less_than_or_equal_to: ->(_vehicle) { Date.current.year } }
+  validates :current_odometer, presence: true, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
+  validates :fuel_tank_size, presence: true, numericality: { greater_than: 0 }
+  validates :active, inclusion: { in: [ true, false ] }
+
+  private
+
+  def normalize_vin
+    self.vin = vin.to_s.strip.upcase if vin.present?
+  end
+end