ebeae34e01
- Created main application entry point in `main.go`. - Added configuration management in `config/config.go` and tests in `config/config_test.go`. - Implemented handlers for book and stationery uploads in `handlers/book.go` and `handlers/stationery.go`, including validation logic. - Established database connection and services in `services/database.go` and `services/book_service.go`. - Defined models for books and stationery in `models/book.go` and `models/stationery.go`. - Set up Firebase integration for image uploads in `services/firebase.go`. - Created migration scripts for database schema in `migrations/001_create_tables.sql` and subsequent updates. - Added CORS and error handling middleware. - Included comprehensive tests for handlers, services, and utilities. - Documented API endpoints and usage in `README.md` and migration instructions in `migrations/README.md`. - Introduced `.gitignore` to exclude unnecessary files and directories. - Added Go module support with `go.mod` and `go.sum` files. - Implemented utility functions for slug generation and validation in `utils/slug.go` and `utils/validation.go`.
108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
package config
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import (
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"fmt"
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"os"
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"github.com/joho/godotenv"
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)
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// Config holds all application configuration
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type Config struct {
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// Server
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Port string
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FrontendURL string
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// Database
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DBHost string
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DBPort string
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DBUser string
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DBPassword string
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DBName string
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// Firebase
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FirebaseProjectID string
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FirebaseStorageBucket string
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FirebaseCredentialsFile string
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}
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// LoadConfig loads configuration from environment variables
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// Loading order (later files override earlier ones):
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// 1. .env (base/default values)
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// 2. .env.local (local development overrides - takes precedence)
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// Note: OS environment variables take highest precedence (godotenv won't override them)
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func LoadConfig() (*Config, error) {
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// Load .env file if it exists (optional, won't error if missing)
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_ = godotenv.Load(".env")
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// Load .env.local if it exists (overrides .env values)
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// This allows local development overrides without modifying .env
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_ = godotenv.Load(".env.local")
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cfg := &Config{
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// Server
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Port: getEnv("PORT", "8080"),
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FrontendURL: getEnv("FRONTEND_URL", "http://localhost:5173"),
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// Database
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DBHost: getEnv("DB_HOST", "localhost"),
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DBPort: getEnv("DB_PORT", "5432"),
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DBUser: getEnv("DB_USER", ""),
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DBPassword: getEnv("DB_PASSWORD", ""),
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DBName: getEnv("DB_NAME", ""),
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// Firebase
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FirebaseProjectID: getEnv("FIREBASE_PROJECT_ID", ""),
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FirebaseStorageBucket: getEnv("FIREBASE_STORAGE_BUCKET", ""),
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FirebaseCredentialsFile: getEnv("FIREBASE_CREDENTIALS_FILE", ""),
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}
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// Validate required fields
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if err := cfg.Validate(); err != nil {
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return nil, fmt.Errorf("config validation failed: %w", err)
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}
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return cfg, nil
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}
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// Validate checks that all required configuration values are set
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func (c *Config) Validate() error {
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var missing []string
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if c.DBUser == "" {
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missing = append(missing, "DB_USER")
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}
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if c.DBPassword == "" {
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missing = append(missing, "DB_PASSWORD")
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}
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if c.DBName == "" {
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missing = append(missing, "DB_NAME")
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}
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if c.FirebaseProjectID == "" {
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missing = append(missing, "FIREBASE_PROJECT_ID")
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}
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if c.FirebaseStorageBucket == "" {
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missing = append(missing, "FIREBASE_STORAGE_BUCKET")
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}
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if c.FirebaseCredentialsFile == "" {
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// Check if GOOGLE_APPLICATION_CREDENTIALS is set as fallback
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if os.Getenv("GOOGLE_APPLICATION_CREDENTIALS") == "" {
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missing = append(missing, "FIREBASE_CREDENTIALS_FILE (or GOOGLE_APPLICATION_CREDENTIALS)")
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}
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}
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if len(missing) > 0 {
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return fmt.Errorf("missing required environment variables: %v", missing)
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}
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return nil
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}
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// getEnv gets an environment variable or returns a default value
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func getEnv(key, defaultValue string) string {
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if value := os.Getenv(key); value != "" {
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return value
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}
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return defaultValue
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}
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