package config

import (
	"os"
	"strconv"
	"time"
)

type Config struct {
	ServerPort         string
	DatabaseURL        string
	RedisURL           string
	QdrantHost         string
	QdrantPort         int
	SecretKey          string
	JWTExpiration      time.Duration
	TranslationURL     string
	OllamaURL          string
	SpacyURL           string
	DefaultLang        string
	NewsPerPage        int
	RateLimitPerMinute int
}

func Load() *Config {
	return &Config{
		ServerPort:         getEnv("SERVER_PORT", "8080"),
		DatabaseURL:        getEnv("DATABASE_URL", "postgres://rss:rss@localhost:5432/rss"),
		RedisURL:           getEnv("REDIS_URL", "redis://localhost:6379"),
		QdrantHost:         getEnv("QDRANT_HOST", "localhost"),
		QdrantPort:         getEnvInt("QDRANT_PORT", 6333),
		SecretKey:          getEnv("SECRET_KEY", "change-this-secret-key"),
		JWTExpiration:      getEnvDuration("JWT_EXPIRATION", 24*time.Hour),
		TranslationURL:     getEnv("TRANSLATION_URL", "http://libretranslate:7790"),
		OllamaURL:          getEnv("OLLAMA_URL", "http://ollama:11434"),
		SpacyURL:           getEnv("SPACY_URL", "http://spacy:8000"),
		DefaultLang:        getEnv("DEFAULT_LANG", "es"),
		NewsPerPage:        getEnvInt("NEWS_PER_PAGE", 30),
		RateLimitPerMinute: getEnvInt("RATE_LIMIT_PER_MINUTE", 60),
	}
}

func getEnv(key, defaultValue string) string {
	if value := os.Getenv(key); value != "" {
		return value
	}
	return defaultValue
}

func getEnvInt(key string, defaultValue int) int {
	if value := os.Getenv(key); value != "" {
		if intVal, err := strconv.Atoi(value); err == nil {
			return intVal
		}
	}
	return defaultValue
}

func getEnvDuration(key string, defaultValue time.Duration) time.Duration {
	if value := os.Getenv(key); value != "" {
		if duration, err := time.ParseDuration(value); err == nil {
			return duration
		}
	}
	return defaultValue
}