water_reduction.h

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#pragma once
#include <vector>
 
namespace water_reduction {
 
struct MeteredFlowMethodData {
    double meter_reading = 0.0; 
};
 
struct VolumeMeterMethodData {
    double final_meter_reading   = 0.0; 
    double initial_meter_reading = 0.0; 
    double elapsed_time          = 0.0; 
};
 
struct BucketMethodData {
    double bucket_volume    = 0.0; 
    double bucket_fill_time = 0.0; 
};
 
struct WaterOtherMethodData {
    double consumption = 0.0; 
};
 
enum class WaterReductionMeasurementMethod {
    Metered = 0, 
    Volume  = 1, 
    Bucket  = 2, 
    Other   = 3  
};
 
struct WaterReductionInput {
    int    operating_hours     = 0;                                          
    double water_cost          = 0.0;                                        
    WaterReductionMeasurementMethod measurement_method = WaterReductionMeasurementMethod::Metered; 
    MeteredFlowMethodData metered_flow_method_data;                          
    VolumeMeterMethodData volume_meter_method_data;                          
    BucketMethodData      bucket_method_data;                                
    WaterOtherMethodData  other_method_data;                                 
};
 
struct WaterReductionOutput {
    double water_use  = 0.0; 
    double water_cost = 0.0; 
};
 
WaterReductionOutput waterReduction(const std::vector<WaterReductionInput>& input_vec);
 
WaterReductionOutput meteredFlowReduction(const MeteredFlowMethodData& data, int operating_hours, double water_cost);
 
WaterReductionOutput volumeMeterReduction(const VolumeMeterMethodData& data, int operating_hours, double water_cost);
 
WaterReductionOutput bucketReduction(const BucketMethodData& data, int operating_hours, double water_cost);
 
WaterReductionOutput otherReduction(const WaterOtherMethodData& data, double water_cost);
 
} // namespace water_reduction