feat: add books APIs

2026-05-09 23:19:19 +05:30
commit b055b8ba0c
43 changed files with 4307 additions and 0 deletions
@@ -0,0 +1,112 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+
+	"github.com/joho/godotenv"
+)
+
+// Config holds all configuration for the application.
+type Config struct {
+	// Server
+	Env  string // "development" | "production"
+	Port int
+
+	// MongoDB (content database)
+	MongoURI string
+	MongoDB  string
+
+	// PostgreSQL (users, relations, URL shortener)
+	PostgresURI string
+
+	// Meilisearch
+	MeilisearchHost   string
+	MeilisearchAPIKey string
+
+	// DragonflyDB / Redis
+	RedisURI string
+
+	// AWS S3
+	S3Region    string
+	S3Bucket    string
+	S3AccessKey string
+	S3SecretKey string
+	S3Endpoint  string // optional — for S3-compatible services (MinIO, etc.)
+
+	// Push Notifications
+	FCMCredentialsFile string // path to Firebase service account JSON
+	APNsKeyFile        string // path to APNs auth key
+	APNsKeyID          string
+	APNsTeamID         string
+	APNsBundleID       string
+
+	// JWT Auth
+	JWTSecret     string
+	JWTExpiration string // e.g., "24h"
+
+	// Frontend
+	FrontendURL string // for CORS
+}
+
+// Load reads configuration from environment variables (with .env fallback).
+func Load() (*Config, error) {
+	// Load .env file if present (ignored in production)
+	_ = godotenv.Load()
+
+	cfg := &Config{
+		Env:  getEnv("APP_ENV", "development"),
+		Port: getEnvInt("PORT", 8080),
+
+		MongoURI: getEnv("MONGO_URI", ""),
+		MongoDB:  getEnv("MONGO_DB", "spsays"),
+
+		PostgresURI: getEnv("POSTGRES_URI", ""),
+
+		MeilisearchHost:   getEnv("MEILISEARCH_HOST", "http://localhost:7700"),
+		MeilisearchAPIKey: getEnv("MEILISEARCH_API_KEY", ""),
+
+		RedisURI: getEnv("REDIS_URI", "redis://localhost:6379"),
+
+		S3Region:    getEnv("S3_REGION", ""),
+		S3Bucket:    getEnv("S3_BUCKET", ""),
+		S3AccessKey: getEnv("S3_ACCESS_KEY", ""),
+		S3SecretKey: getEnv("S3_SECRET_KEY", ""),
+		S3Endpoint:  getEnv("S3_ENDPOINT", ""),
+
+		FCMCredentialsFile: getEnv("FCM_CREDENTIALS_FILE", ""),
+		APNsKeyFile:        getEnv("APNS_KEY_FILE", ""),
+		APNsKeyID:          getEnv("APNS_KEY_ID", ""),
+		APNsTeamID:         getEnv("APNS_TEAM_ID", ""),
+		APNsBundleID:       getEnv("APNS_BUNDLE_ID", ""),
+
+		JWTSecret:     getEnv("JWT_SECRET", ""),
+		JWTExpiration: getEnv("JWT_EXPIRATION", "24h"),
+
+		FrontendURL: getEnv("FRONTEND_URL", "http://localhost:3000"),
+	}
+
+	// Validate required fields
+	if cfg.MongoURI == "" {
+		return nil, fmt.Errorf("MONGO_URI is required")
+	}
+
+	return cfg, nil
+}
+
+func getEnv(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}
+
+func getEnvInt(key string, fallback int) int {
+	if v := os.Getenv(key); v != "" {
+		if i, err := strconv.Atoi(v); err == nil {
+			return i
+		}
+	}
+	return fallback
+}