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Source file src/github.com/growthbook/growthbook-golang/feature_api_response.go

Documentation: github.com/growthbook/growthbook-golang

     1  package growthbook
     2  
     3  import (
     4  	"encoding/json"
     5  	"errors"
     6  	"time"
     7  )
     8  
     9  const dateLayout = "2006-01-02T15:04:05.000Z"
    10  
    11  type FeatureAPIResponse struct {
    12  	Status            int                 `json:"status"`
    13  	Features          map[string]*Feature `json:"features"`
    14  	DateUpdated       time.Time           `json:"dateUpdated"`
    15  	EncryptedFeatures string              `json:"encryptedFeatures"`
    16  }
    17  
    18  // Implement normal JSON marshalling interfaces for convenience.
    19  
    20  func (r *FeatureAPIResponse) MarshalJSON() ([]byte, error) {
    21  	type Alias FeatureAPIResponse
    22  	return json.Marshal(&struct {
    23  		*Alias
    24  		DateUpdated string `json:"dateUpdated"`
    25  	}{
    26  		Alias:       (*Alias)(r),
    27  		DateUpdated: r.DateUpdated.Format(dateLayout),
    28  	})
    29  }
    30  
    31  func (r *FeatureAPIResponse) UnmarshalJSON(data []byte) error {
    32  	parsed := ParseFeatureAPIResponse(data)
    33  	if parsed == nil {
    34  		return errors.New("failed to parse feature API response")
    35  	}
    36  	r.Features = parsed.Features
    37  	r.DateUpdated = parsed.DateUpdated
    38  	r.EncryptedFeatures = parsed.EncryptedFeatures
    39  	return nil
    40  }
    41  
    42  // ParseFeature creates a single Feature value from raw JSON input.
    43  func ParseFeatureAPIResponse(data []byte) *FeatureAPIResponse {
    44  	dict := make(map[string]interface{})
    45  	err := json.Unmarshal(data, &dict)
    46  	if err != nil {
    47  		logError("Failed parsing JSON input", "FeatureAPIResponse")
    48  		return nil
    49  	}
    50  	return BuildFeatureAPIResponse(dict)
    51  }
    52  
    53  // BuildFeatureAPIResponse creates a FeatureAPIResponse value from a
    54  // generic JSON value.
    55  func BuildFeatureAPIResponse(dict map[string]interface{}) *FeatureAPIResponse {
    56  	apiResponse := FeatureAPIResponse{}
    57  	for k, v := range dict {
    58  		switch k {
    59  		case "status":
    60  			status, ok := jsonInt(v, "FeatureAPIResponse", "status")
    61  			if !ok {
    62  				return nil
    63  			}
    64  			apiResponse.Status = status
    65  		case "features":
    66  			apiResponse.Features = BuildFeatures(v)
    67  		case "dateUpdated":
    68  			dateUpdated, ok := jsonString(v, "FeatureAPIResponse", "dateUpdated")
    69  			if !ok {
    70  				return nil
    71  			}
    72  			var err error
    73  			apiResponse.DateUpdated, err = time.Parse(dateLayout, dateUpdated)
    74  			if err != nil {
    75  				return nil
    76  			}
    77  		case "encryptedFeatures":
    78  			encryptedFeatures, ok := jsonString(v, "FeatureAPIResponse", "encryptedFeatures")
    79  			if !ok {
    80  				return nil
    81  			}
    82  			apiResponse.EncryptedFeatures = encryptedFeatures
    83  		default:
    84  			logWarn("Unknown key in JSON data", "FeatureAPIResponse", k)
    85  		}
    86  	}
    87  	return &apiResponse
    88  }
    89  

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