class SalesGoal < ApplicationRecord
  include Auditable

  belongs_to :project, optional: true

  validates :name, :metric, :target_value, :start_date, :end_date, presence: true
  validates :metric, inclusion: { in: Catalog::GOAL_METRICS.keys }
  validates :target_value, numericality: { greater_than: 0 }
  validate :end_date_after_start_date

  scope :active, -> { where(active: true) }
  scope :for_project, ->(project) {
    return none if project.nil?

    where(project_id: project.id)
  }
  scope :current, ->(project = nil) {
    today = Time.zone.today
    scope = active.where("start_date <= ? AND end_date >= ?", today, today)
    scope = scope.where(project_id: project.id) if project
    scope
  }

  def metric_label
    Catalog.label_for(Catalog::GOAL_METRICS, metric)
  end

  def current_value
    opps = project ? Opportunity.for_project(project) : Opportunity.all
    activities = if project
                   Activity.joins(:organization)
                           .joins("INNER JOIN organization_projects ON organization_projects.organization_id = activities.organization_id")
                           .where(organization_projects: { project_id: project.id })
                 else
                   Activity.all
                 end

    case metric
    when "customers_acquired"
      opps.won.where(won_at: start_date.beginning_of_day..end_date.end_of_day).count
    when "won_value"
      opps.won.where(won_at: start_date.beginning_of_day..end_date.end_of_day).sum(:estimated_value).to_f
    when "trials"
      activities.where(activity_type: "trial_started", happened_at: start_date.beginning_of_day..end_date.end_of_day).count
    when "first_uses"
      activities.where(activity_type: "first_use", happened_at: start_date.beginning_of_day..end_date.end_of_day).count
    else
      0
    end
  end

  def progress_percentage
    return 0 if target_value.to_f.zero?

    [[(current_value.to_f / target_value.to_f * 100).round, 0].max, 100].min
  end

  private

  def end_date_after_start_date
    return if start_date.blank? || end_date.blank?
    return if end_date >= start_date

    errors.add(:end_date, "deve essere successiva alla data di inizio")
  end
end