# frozen_string_literal: true

# License: AGPL-3.0-or-later WITH Web-Template-Output-Additional-Permission-3.0-or-later
require 'qexpr'

module QueryCampaigns
  def self.featured(limit, gross_more_than)
    expr = Qexpr.new.select(
      'campaigns.name',
      'campaigns.summary',
      'campaigns.gross',
      Image._url('campaigns', 'main_image', 'normal') + 'AS main_image_url',
      "concat('/nonprofits/', campaigns.nonprofit_id, '/campaigns/', campaigns.id) AS url"
    ).from(
      Qexpr.new.select('campaigns.*', 'SUM(donations.amount) AS gross')
      .from('campaigns')
      .join('donations', 'donations.campaign_id=campaigns.id')
      .group_by('campaigns.id'),
      'campaigns'
    ).where("campaigns.gross > $amount AND campaigns.published='t' AND campaigns.nonprofit_id!=$id", amount: gross_more_than, id: 4182)
                .order_by('campaigns.updated_at ASC')
                .limit(limit)

    Psql.execute(expr.parse)
  end

  def self.timeline(campaign_id)
    ex = QueryCampaigns.payments_expression(campaign_id, true)
    ex.group_by('DATE(payments.date)')
      .order_by('DATE(payments.date)')
      .execute
  end

  def self.payments_expression(campaign_id, for_timeline)
    selects = [
      'coalesce(SUM(payments.gross_amount), 0) AS total_cents',
      'coalesce(SUM(recurring.gross_amount), 0) AS recurring_cents',
      'coalesce(SUM(offsite.gross_amount), 0) AS offsite_cents',
      'coalesce(SUM(onetime.gross_amount), 0) AS onetime_cents'
    ]

    for_timeline ?
      selects.push('MAX(DATE(payments.date)) AS date') :
      selects.push('coalesce(count(supporters.id), 0) AS supporters_count')

    Qx.select(*selects)
      .from('payments')
      .left_join(
        ['donations', 'payments.donation_id=donations.id'],
        ['payments AS onetime', "onetime.id=payments.id AND onetime.kind='Donation'"],
        ['payments AS offsite', "offsite.id=payments.id AND offsite.kind='OffsitePayment'"],
        ['payments AS recurring', "recurring.id=payments.id AND recurring.kind='RecurringDonation'"]
      )
      .where("donations.campaign_id IN (#{QueryCampaigns.get_campaign_and_children(campaign_id).parse})")
  end

  def self.totals(campaign_id)
    ex = QueryCampaigns.payments_expression(campaign_id, false)
    ex.add_left_join(['supporters', 'donations.supporter_id=supporters.id'])
      .execute.first
  end

  def self.name_and_id(npo_id)
    np = Nonprofit.find(npo_id)
    campaigns = np.campaigns.not_deleted.includes(:profile).order('campaigns.name ASC')
    output = campaigns.map do |i|
      {
        'name' => i.name,
        'id' => i.id,
        'isChildCampaign' => i.child_campaign?,
        'creator' => i.profile&.name || "user ##{i.profile.id}"
      }
    end
    output
  end

  def self.get_campaign_and_children(campaign_id)
    Qx.select('id')
      .from('campaigns')
      .where('campaigns.id = $id OR campaigns.parent_campaign_id=$id',
             id: campaign_id)
  end
end