package config

import (
	"fmt"
	"os"
)

type Config struct {
	ListenAddr    string
	DatabaseURL   string
	TushareAPIURL string
}

func Load() (*Config, error) {
	cfg := &Config{
		ListenAddr:    getenv("LISTEN_ADDR", ":8080"),
		DatabaseURL:   os.Getenv("DATABASE_URL"),
		TushareAPIURL: getenv("TUSHARE_API_URL", "http://tushare:8000"),
	}
	if cfg.DatabaseURL == "" {
		return nil, fmt.Errorf("DATABASE_URL 环境变量未设置")
	}
	return cfg, nil
}

func getenv(key, fallback string) string {
	if v, ok := os.LookupEnv(key); ok && v != "" {
		return v
	}
	return fallback
}