Combine Rules

1. • Combination Methods: Define how rules are combined.

     • Additive: Discounts are added together (e.g., 10% Early Bird + 20% Stay/Pay = 30% total discount).

     • Sequential: Discounts are applied one after the other (e.g., apply the 10% Early Bird discount first, then apply the 20% Stay/Pay discount to the already discounted price).

     • Best Value: The system selects the combination of rules that provides the customer with the greatest discount.

   • Exclusion Rules: Implement the ability to create rules that exclude each other. For example, a "Holiday Discount" might exclude an "Early Bird" discount.

Condition Matching and Rule Application:

1. • Comprehensive Condition Evaluation: The system must accurately evaluate all conditions associated with each rule. This includes date ranges, room types, booking durations, and advance booking windows.

   • Multiple Rule Triggering: When a booking meets the conditions of multiple rules, the system should identify all applicable rules.

   • Dynamic Calculation: The system must dynamically calculate the final booking price based on the selected combination method and the applicable rules.

2. Example Scenario (Stay 4 Pay 3 + Early Bird):

   • Booking Details: A customer books a 5-night stay 30 days in advance.

   • Rule Matching:

     • "Stay 4 Pay 3" rule: The booking meets the 4-night minimum stay requirement.

     • "Early Bird" rule: The booking is made 30 days in advance.

   • Rule Combination:

     • If the combination method is additive, the customer receives both the "Stay 4 Pay 3" discount and the "Early Bird" discount.

     • If sequential, the 4th night is removed, then the early bird discount is applied to the remaining 4 nights.

   • Final Price Calculation: The system calculates the final price based on the combined discounts.

3. Technical Implementation:
   
   

   • Rule Engine: The core of the combined rule logic is a robust rule engine that can efficiently evaluate conditions and apply rules.

   • Database Design: The database must be designed to store rule parameters, priority levels, combination methods, and exclusion rules.

   • API Integration: Provide an API that allows external systems to retrieve and validate combined rule settings.