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fab-manager/app/services/cart/find_or_create_service.rb

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# frozen_string_literal: true
# Provides methods for find or create a cart
class Cart::FindOrCreateService
def initialize(user)
@user = user
end
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def call(order_token)
@order = Order.find_by(token: order_token, state: 'cart')
check_order_authorization
set_last_cart_if_user_login if @order.nil?
if @order
if @order.order_items.count.zero? && @user && ((@user.member? && @order.statistic_profile_id.nil?) || (@user.privileged? && @order.operator_profile_id.nil?))
set_last_order_if_anonymous_order_s_items_is_empty_after_user_login
end
clean_old_cart if @user
@order.update(statistic_profile_id: @user.statistic_profile.id) if @order.statistic_profile_id.nil? && @user&.member?
@order.update(operator_profile_id: @user.invoicing_profile.id) if @order.operator_profile_id.nil? && @user&.privileged?
Cart::UpdateTotalService.new.call(@order)
return @order
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end
token = GenerateTokenService.new.call(Order)
order_param = {
token: token,
state: 'cart',
total: 0
}
if @user
order_param[:statistic_profile_id] = @user.statistic_profile.id if @user.member?
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order_param[:operator_profile_id] = @user.invoicing_profile.id if @user.privileged?
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end
Order.create!(order_param)
end
# This function check current order that
# 1. belongs current user
# 2. has belonged an user but this user dont login
# 3. created date > last paid order of user
# if not, set current order = nil
def check_order_authorization
if @order && @user && ((@user.member? && @order.statistic_profile_id.present? && @order.statistic_profile_id != @user.statistic_profile.id) ||
(@user.privileged? && @order.operator_profile_id.present? && @order.operator_profile_id != @user.invoicing_profile.id))
@order = nil
end
@order = nil if @order && !@user && (@order.statistic_profile_id.present? || @order.operator_profile_id.present?)
if @order && @order.statistic_profile_id.present? && Order.where(statistic_profile_id: @order.statistic_profile_id,
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state: 'paid').where('created_at > ?', @order.created_at).last.present?
@order = nil
end
if @order && @order.operator_profile_id.present? && Order.where(operator_profile_id: @order.operator_profile_id,
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state: 'paid').where('created_at > ?', @order.created_at).last.present?
@order = nil
end
end
# set user last cart of user when login
def set_last_cart_if_user_login
if @user&.member?
last_paid_order = Order.where(statistic_profile_id: @user.statistic_profile.id,
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state: 'paid').last
@order = if last_paid_order
Order.where(statistic_profile_id: @user.statistic_profile.id,
state: 'cart').where('created_at > ?', last_paid_order.created_at).last
else
Order.where(statistic_profile_id: @user.statistic_profile.id, state: 'cart').last
end
end
if @user&.privileged?
last_paid_order = Order.where(operator_profile_id: @user.invoicing_profile.id,
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state: 'paid').last
@order = if last_paid_order
Order.where(operator_profile_id: @user.invoicing_profile.id,
state: 'cart').where('created_at > ?', last_paid_order.created_at).last
else
Order.where(operator_profile_id: @user.invoicing_profile.id, state: 'cart').last
end
end
end
# set last order if current cart is anoymous and user is login
def set_last_order_if_anonymous_order_s_items_is_empty_after_user_login
last_unpaid_order = nil
if @user&.member?
last_paid_order = Order.where(statistic_profile_id: @user.statistic_profile.id,
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state: 'paid').last
last_unpaid_order = if last_paid_order
Order.where(statistic_profile_id: @user.statistic_profile.id,
state: 'cart').where('created_at > ?', last_paid_order.created_at).last
else
Order.where(statistic_profile_id: @user.statistic_profile.id, state: 'cart').last
end
end
if @user&.privileged?
last_paid_order = Order.where(operator_profile_id: @user.invoicing_profile.id,
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state: 'paid').last
last_unpaid_order = if last_paid_order
Order.where(operator_profile_id: @user.invoicing_profile.id,
state: 'cart').where('created_at > ?', last_paid_order.created_at).last
else
Order.where(operator_profile_id: @user.invoicing_profile.id, state: 'cart').last
end
end
if last_unpaid_order && last_unpaid_order.id != @order.id
@order.destroy
@order = last_unpaid_order
end
end
# delete all old cart if last cart of user isnt empty
# keep every user only one cart
def clean_old_cart
if @user&.member?
Order.where(statistic_profile_id: @user.statistic_profile.id, state: 'cart')
.where.not(id: @order.id)
.destroy_all
end
if @user&.privileged?
Order.where(operator_profile_id: @user.invoicing_profile.id, state: 'cart')
.where.not(id: @order.id)
.destroy_all
end
end
# delete all empty cart if last cart of user isnt empty
def clean_empty_cart
if @user&.member?
Order.where(statistic_profile_id: @user.statistic_profile.id, state: 'cart')
.where('(SELECT COUNT(*) FROM order_items WHERE order_items.order_id = orders.id) = 0')
.destroy_all
end
if @user&.privileged?
Order.where(operator_profile_id: @user.invoicing_profile.id, state: 'cart')
.where('(SELECT COUNT(*) FROM order_items WHERE order_items.order_id = orders.id) = 0')
.destroy_all
end
end
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end