package config

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

type Config struct {
	HTTPHost       string
	HTTPPort       int
	DatabaseURL    string
	MigrateOnStart bool

	LLMBaseURL  string
	LLMAPIKey   string
	LLMModel    string
	LLMTimeout  time.Duration
	WhisperXURL string
	OpenClawURL string
}

func Load() Config {
	return Config{
		HTTPHost:       envString("HTTP_HOST", "0.0.0.0"),
		HTTPPort:       envInt("HTTP_PORT", 8080),
		DatabaseURL:    envString("DATABASE_URL", ""),
		MigrateOnStart: envBool("MIGRATE_ON_START", true),

		LLMBaseURL:  envString("LLM_BASE_URL", ""),
		LLMAPIKey:   envString("LLM_API_KEY", ""),
		LLMModel:    envString("LLM_MODEL", "qwen2.5-14b"),
		LLMTimeout:  envDuration("LLM_TIMEOUT", 5*time.Minute),
		WhisperXURL: envString("WHISPERX_URL", ""),
		OpenClawURL: envString("OPENCLAW_URL", ""),
	}
}

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

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

func envBool(key string, fallback bool) bool {
	raw := os.Getenv(key)
	if raw == "" {
		return fallback
	}
	v, err := strconv.ParseBool(raw)
	if err != nil {
		return fallback
	}
	return v
}

func envDuration(key string, fallback time.Duration) time.Duration {
	raw := os.Getenv(key)
	if raw == "" {
		return fallback
	}
	v, err := time.ParseDuration(raw)
	if err != nil {
		return fallback
	}
	return v
}