package main

import (
	"fmt"
	"os"
	"strings"

	logger "git.site.quack-lab.dev/dave/cylogger"
	"github.com/joho/godotenv"
)

var options Options

func init() {
	var err error
	options, err = LoadOptions()
	if err != nil {
		logger.Error("Failed to load options %v", err)
		return
	}
}

type Options struct {
	DBPath string
	Port   string

	ESIScopes      []string
	ESIRedirectURI string
	ESIClientID    string

	WebhookURL   string
	WebhookEmail string
	WebhookToken string
}

func LoadOptions() (Options, error) {
	// Load environment variables strictly from .env file (fail if there's an error loading)
	if err := godotenv.Load(); err != nil {
		return Options{}, fmt.Errorf("error loading .env file: %w", err)
	}

	dbPath := getOrDefault("DB_PATH", "eve-pi.db")
	port := getOrDefault("HTTP_SERVER_PORT", "3000")

	clientID := getOrFatal("ESI_CLIENT_ID")
	redirectURI := getOrFatal("ESI_REDIRECT_URI")
	rawScopes := getOrDefault("ESI_SCOPES", "esi-planets.manage_planets.v1")
	scopes := strings.Fields(rawScopes)

	webhookUrl := getOrFatal("WEBHOOK_URL")
	webhookEmail := getOrFatal("WEBHOOK_EMAIL")
	webhookToken := getOrFatal("WEBHOOK_TOKEN")

	return Options{
		DBPath: dbPath,
		Port:   port,

		ESIClientID:    clientID,
		ESIRedirectURI: redirectURI,
		ESIScopes:      scopes,

		WebhookURL:   webhookUrl,
		WebhookEmail: webhookEmail,
		WebhookToken: webhookToken,
	}, nil
}

func getOrFatal(key string) string {
	value := os.Getenv(key)
	if value == "" {
		logger.Error("Environment variable %s is required", key)
		os.Exit(1)
	}
	return value
}

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