package config

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

type Config struct {
	DatabaseURL       string
	FlareSolverrURL   string
	FlareSolverrProxy bool
	Addr              string
	MangaListTTL      time.Duration
	MangaDetailTTL    time.Duration
	ChapterListTTL   time.Duration
	DBMaxConns        int
	DBMinConns        int
}

func Load() Config {
	return Config{
		DatabaseURL:       os.Getenv("DATABASE_URL"),
		FlareSolverrURL:   os.Getenv("FLARESOLVERR_URL"),
		FlareSolverrProxy: envBool("FLARESOLVERR_PROXY", false),
		Addr:              envStr("ADDR", ":8080"),
		MangaListTTL:      time.Duration(envInt("MANGA_LIST_TTL_SECONDS", 600)) * time.Second,
		MangaDetailTTL:    time.Duration(envInt("MANGA_DETAIL_TTL_SECONDS", 3600)) * time.Second,
		ChapterListTTL:    time.Duration(envInt("CHAPTER_LIST_TTL_SECONDS", 600)) * time.Second,
		DBMaxConns:        envInt("DB_MAX_CONNS", 10),
		DBMinConns:        envInt("DB_MIN_CONNS", 2),
	}
}

func envStr(key, def string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return def
}

func envInt(key string, def int) int {
	if v := os.Getenv(key); v != "" {
		if n, err := strconv.Atoi(v); err == nil {
			return n
		}
	}
	return def
}

func envBool(key string, def bool) bool {
	if v := os.Getenv(key); v != "" {
		return v == "1" || v == "true" || v == "yes"
	}
	return def
}