require 'qexpr'
require 'psql'

module QueryNonprofits

  def self.all_that_need_payouts
    Psql.execute_vectors(
      Qexpr.new.select(
        "nonprofits.id",
        "nonprofits.stripe_account_id",
        "'support@commitchange.com' AS email",
        "'192.168.0.1' AS user_ip",
        "bank_accounts.name"
      ).from(:nonprofits)
      .where("nonprofits.verification_status='verified'")
      .join(:bank_accounts, "bank_accounts.nonprofit_id=nonprofits.id")
      .where("bank_accounts.pending_verification='f'")
      .join(
        Qexpr.new.select("nonprofit_id")
        .from(:charges).group_by("nonprofit_id")
        .where("status='available'").as("charges"),
          "charges.nonprofit_id=nonprofits.id"
      )
    )[1..-1]
  end

  def self.by_search_string(string)
    results = Psql.execute_vectors(
      Qexpr.new.select(
        "nonprofits.id",
        "nonprofits.name"
      ).from(:nonprofits)
      .where("lower(nonprofits.name) LIKE lower($search)", search: "%#{string}%")
      .where("nonprofits.published='t'")
      .order_by("nonprofits.name ASC")
      .limit(10)
    )[1..-1]
    if results
      results = results.map {|id, name| {id: id, name: name}}
    end
    return results
  end

  def self.for_admin(params)
    expr = Qx.select(
      'nonprofits.id',
      'nonprofits.name',
      'nonprofits.email',
      'nonprofits.state_code',
      'nonprofits.created_at::date::text AS created_at',
      'nonprofits.verification_status',
      'nonprofits.vetted',
      'nonprofits.stripe_account_id',
      'coalesce(events.count, 0) AS events_count', 
      'coalesce(campaigns.count, 0) AS campaigns_count', 
      'billing_plans.percentage_fee',
      'cards.stripe_customer_id',
      'charges.total_processed',
      'charges.total_fees'
    ).from(:nonprofits)
     .add_left_join(:cards, "cards.holder_id=nonprofits.id AND cards.holder_type='Nonprofit'")
     .add_left_join(:billing_subscriptions, "billing_subscriptions.nonprofit_id=nonprofits.id")
     .add_left_join(:billing_plans, "billing_subscriptions.billing_plan_id=billing_plans.id")
     .add_left_join(
       Qx.select(
            "((SUM(coalesce(fee, 0)) * .978) / 100)::money::text AS total_fees", 
            "(SUM(coalesce(amount, 0)) / 100)::money::text AS total_processed", 
            "nonprofit_id")
         .from(:charges)
         .where("status != 'failed'")
         .and_where("created_at::date >= '2017-03-15'")
         .group_by("nonprofit_id")
         .as("charges"),
         "charges.nonprofit_id=nonprofits.id"
     )
     .add_left_join(
       Qx.select("COUNT(id)", "nonprofit_id")
         .from(:events)
         .group_by("nonprofit_id")
         .as("events"),
         "events.nonprofit_id=nonprofits.id"
     )
     .add_left_join(
       Qx.select("COUNT(id)", "nonprofit_id")
         .from(:campaigns)
         .group_by("nonprofit_id")
         .as("campaigns"),
         "campaigns.nonprofit_id=nonprofits.id"
     )
     .paginate(params[:page].to_i, params[:page_length].to_i)
     .order_by('nonprofits.created_at DESC')

     if params[:search].present?
      expr = expr.where(%Q(
        nonprofits.name ILIKE $search
        OR nonprofits.email ILIKE $search
        OR nonprofits.city ILIKE $search
      ), search: '%' + params[:search] + '%')
     end

     return expr.execute
  end
end