config

Overview ¶

Package config provides utility functions for accessing environment variables in a structured and consistent manner across the API application. This uses the `github.com/joho/godotenv` package to load environment variables from a `.env` file

This package acts as a centralized interface for reading from the runtime environment (e.g., from `.env` files, containerized environments, or CI/CD systems), and ensures defaults and key presence are handled gracefully

Core Functions:

• GetEnv() map[string]string Returns all available environment variables as a map for inspection or iteration

• GetEnvValue(key string) string Retrieves the value of a specific environment variable. Returns an empty string if not set

• GetEnvWithDefault(key, defaultValue string) string Returns the value of the specified environment variable, or a provided default if the variable is not set

• KeyExists(key string) bool Checks whether a specific environment variable is present in the runtime environment

Usage Example:

dbHost := config.GetEnvWithDefault("DB_HOST", "localhost")

if !config.KeyExists("JWT_SECRET") {
    log.Fatal("JWT_SECRET is required but not set")
}

Design Intent:

• Keep all environment access logic isolated to a single, testable package
• Reduce boilerplate in service-level configuration code
• Provide safe access patterns that avoid panics or misconfiguration

This package is meant to be minimal and dependency-free, giving API templates a predictable and consistent way to interact with system-level configuration at runtime