refactor: Adjust URL construction logic in integration

README.md

@@ -22,6 +22,40 @@ This HTTP client is intended to be used with targetted SDK's and terraform provi
 
 TBC
 
+## Getting Started
+'
+{
+	"Integration": {
+		"FQDN": "https://api.example.com",
+		"AuthMethodDescriptor": "Bearer"
+		// other necessary fields for integration
+	},
+	"HideSensitiveData": true,
+	"CustomCookies": [
+		{
+			"Name": "sessionid",
+			"Value": "abc123",
+			"Path": "/",
+			"Domain": "example.com",
+			"Expires": "2025-01-02T15:04:05Z",
+			"MaxAge": 86400,
+			"Secure": true,
+			"HttpOnly": true,
+			"SameSite": 1
+		}
+	],
+	"MaxRetryAttempts": 5,
+	"MaxConcurrentRequests": 10,
+	"EnableDynamicRateLimiting": true,
+	"CustomTimeout": "10s",
+	"TokenRefreshBufferPeriod": "2m",
+	"TotalRetryDuration": "10m",
+	"FollowRedirects": true,
+	"MaxRedirects": 3,
+	"ConcurrencyManagementEnabled": true
+}
+'
+
 
 ## Reporting Issues and Feedback
 
@@ -53,13 +87,4 @@ If you would like to become an active contributor to this repository or project,
 [GitHubDocs]: <https://docs.github.com/>
 [AzureDevOpsDocs]: <https://docs.microsoft.com/en-us/azure/devops/?view=azure-devops>
 [GitHubIssues]: <https://github.com/segraef/Template/issues>
-[Contributing]: CONTRIBUTING.md
-
-<!-- External -->
-[Az]: <https://img.shields.io/powershellgallery/v/Az.svg?style=flat-square&label=Az>
-[AzGallery]: <https://www.powershellgallery.com/packages/Az/>
-[PowerShellCore]: <https://github.com/PowerShell/PowerShell/releases/latest>
-
-<!-- Docs -->
-[MicrosoftAzureDocs]: <https://docs.microsoft.com/en-us/azure/>
-[PowerShellDocs]: <https://docs.microsoft.com/en-us/powershell/>
+[Contributing]: CONTRIBUTING.md

httpclient/config_validation.go

@@ -3,7 +3,11 @@
 package httpclient
 
 import (
+	"encoding/json"
 	"errors"
+	"fmt"
+	"io"
+	"os"
 	"time"
 )
 
@@ -24,16 +28,51 @@ const (
 	DefaultMaxRedirects              = 5
 )
 
-// TODO migrate all the loose strings
-
-// TODO LoadConfigFromFile Func
+// LoadConfigFromFile loads http client configuration settings from a JSON file.
 func LoadConfigFromFile(filepath string) (*ClientConfig, error) {
-	return nil, nil
+	absPath, err := validateFilePath(filepath)
+	if err != nil {
+		return nil, fmt.Errorf("invalid file path: %v", err)
+	}
+
+	file, err := os.Open(absPath)
+	if err != nil {
+		return nil, fmt.Errorf("could not open file: %v", err)
+	}
+	defer file.Close()
+
+	byteValue, err := io.ReadAll(file)
+	if err != nil {
+		return nil, fmt.Errorf("could not read file: %v", err)
+	}
+
+	var config ClientConfig
+	err = json.Unmarshal(byteValue, &config)
+	if err != nil {
+		return nil, fmt.Errorf("could not unmarshal JSON: %v", err)
+	}
+
+	// Set default values for missing fields.
+	SetDefaultValuesClientConfig(&config)
+
+	return &config, nil
 }
 
-// TODO LoadConfigFromEnv Func
+// LoadConfigFromEnv loads configuration settings from environment variables.
 func LoadConfigFromEnv() (*ClientConfig, error) {
-	return nil, nil
+	config := &ClientConfig{
+		HideSensitiveData:         getEnvAsBool("HIDE_SENSITIVE_DATA", DefaultHideSensitiveData),
+		MaxRetryAttempts:          getEnvAsInt("MAX_RETRY_ATTEMPTS", DefaultMaxRetryAttempts),
+		MaxConcurrentRequests:     getEnvAsInt("MAX_CONCURRENT_REQUESTS", DefaultMaxConcurrentRequests),
+		EnableDynamicRateLimiting: getEnvAsBool("ENABLE_DYNAMIC_RATE_LIMITING", DefaultEnableDynamicRateLimiting),
+		CustomTimeout:             getEnvAsDuration("CUSTOM_TIMEOUT", DefaultCustomTimeout),
+		TokenRefreshBufferPeriod:  getEnvAsDuration("TOKEN_REFRESH_BUFFER_PERIOD", DefaultTokenRefreshBufferPeriod),
+		TotalRetryDuration:        getEnvAsDuration("TOTAL_RETRY_DURATION", DefaultTotalRetryDuration),
+		FollowRedirects:           getEnvAsBool("FOLLOW_REDIRECTS", DefaultFollowRedirects),
+		MaxRedirects:              getEnvAsInt("MAX_REDIRECTS", DefaultMaxRedirects),
+	}
+
+	return config, nil
 }
 
 // TODO Review validateClientConfig

httpclient/integration.go

@@ -1,11 +1,12 @@
-// apiintegrations/apihandler/apihandler.go
+// httpclient/integration.go
 package httpclient
 
 import (
 	"net/http"
 )
 
-// TODO comment
+// APIIntegration is an interface that defines the methods required for an API integration. These are obtained from go-api-http-client-integrations.
+// The methods defined in this interface are used by the HTTP client to authenticate and prepare requests for the API.
 type APIIntegration interface {
 	GetFQDN() string
 	ConstructURL(endpoint string) string

httpclient/utility.go

@@ -1,11 +1,15 @@
+// httpclient/utility.go
 package httpclient
 
 import (
 	"errors"
 	"fmt"
+	"os"
 	"path/filepath"
 	"regexp"
+	"strconv"
 	"strings"
+	"time"
 )
 
 // TODO all func comments in here
@@ -74,3 +78,44 @@ func validatePassword(password string) error {
 	}
 	return nil
 }
+
+// getEnvAsString reads an environment variable as a string, with a fallback default value.
+func getEnvAsString(name string, defaultVal string) string {
+	if value, exists := os.LookupEnv(name); exists {
+		return value
+	}
+	return defaultVal
+}
+
+// getEnvAsBool reads an environment variable as a boolean, with a fallback default value.
+func getEnvAsBool(name string, defaultVal bool) bool {
+	if value, exists := os.LookupEnv(name); exists {
+		boolValue, err := strconv.ParseBool(value)
+		if err == nil {
+			return boolValue
+		}
+	}
+	return defaultVal
+}
+
+// getEnvAsInt reads an environment variable as an integer, with a fallback default value.
+func getEnvAsInt(name string, defaultVal int) int {
+	if value, exists := os.LookupEnv(name); exists {
+		intValue, err := strconv.Atoi(value)
+		if err == nil {
+			return intValue
+		}
+	}
+	return defaultVal
+}
+
+// getEnvAsDuration reads an environment variable as a duration, with a fallback default value.
+func getEnvAsDuration(name string, defaultVal time.Duration) time.Duration {
+	if value, exists := os.LookupEnv(name); exists {
+		durationValue, err := time.ParseDuration(value)
+		if err == nil {
+			return durationValue
+		}
+	}
+	return defaultVal
+}