FLOW LOGICS:

1. Approve Combo (Calculate Combo Price)
   • Cal Total Price $combo->total_price = ($combo->variant->price * $combo->amount) / $combo->variant->service->combo_ratio;
   • Add the expiry date to combo: 3 months from approve date
   • Calculate Sale Commission $combo->sale_commission = $combo->total_price * $combo->variant->service->combo_commission;
2. Approve intake
   • Loop all orders of intake
     • If order uses combo:
       • Minus combo
     • If order pays money
       • Calculate price and store to order
   • Calculate Final Price
     • If has discount: $final_price = $total_price - $discount_price, minus $customer->points
     • If has additional_discount_price, discount_note: $final_price = $final_price - $additional_discount_price
     • Else: $final_price = $total_price
   • Add point to customer base on total price of intake (formula will be provided)
   • Update status for intake to "is_valid = 1"
3. Review
   • Note: just review for valid intake and intakes which hasn't been reviewed before : Review Form: facility, customer_satisfy, note : Review for each order: skill, attitude

DEFINE

• Pay 50k VND -> 1 points
• 50 point -> discount 200k VND
• Money: smallest unit = 1000 VND (price = 1 means 1k VND)
• Commission: integer value corresponding percent (commission = 50 -> 50%)