package config

import (
	"log/slog"
	"os"

	"github.com/joho/godotenv"
)

type config struct {
	AdminPassword string
	Instance      string
	Tag           string

	JwtSecret   string
	JwtIssuer   string
	JwtAudience string

	DBEngine   string
	DBHost     string
	DBPort     string
	DBUser     string
	DBPassword string
	DBName     string

	ImageKitId string
}

var Config *config

func Load() *config {
	err := godotenv.Load()
	if err != nil {
		slog.Error("Error loading .env file - Using environment variables instead")
	}

	// Get mastodon instance
	instance := os.Getenv("CAOM_INSTANCE")
	if instance == "" {
		instance = "https://mstdn.party"
	}
	// Get mastodon tag
	tag := os.Getenv("CAOM_TAG")
	if tag == "" {
		tag = "catsofmastodon"
	}
	// Get admin password (Its a single user/admin app so its just fine)
	adminPassword := os.Getenv("CAOM_ADMIN_PASSWORD")
	if adminPassword == "" {
		slog.Warn("No admin password provided, using default password 'catsaregood'")
		adminPassword = "catsaregood"
	}

	// Jwt params
	secret := os.Getenv("CAOM_JWT_SECRET")
	if secret == "" {
		panic("No jwt secret provided")
	}
	issuer := os.Getenv("CAOM_JWT_ISSUER")
	if issuer == "" {
		slog.Info("No jwt issuer provided, using default issuer 'CatsOfMastodonBotGo'")
		issuer = "CatsOfMastodonBotGo"
	}
	audience := os.Getenv("CAOM_JWT_AUDIENCE")
	if audience == "" {
		slog.Info("No jwt audience provided, using default audience 'CatsOfMastodonBotGo'")
		audience = "CatsOfMastodonBotGo"
	}

	dbEngine := os.Getenv("CAOM_DB_ENGINE")
	dbHost := os.Getenv("CAOM_DB_HOST")
	dbPort := os.Getenv("CAOM_DB_PORT")
	dbUser := os.Getenv("CAOM_DB_USER")
	dbPassword := os.Getenv("CAOM_DB_PASSWORD")
	dbName := os.Getenv("CAOM_DB_NAME")

	if dbEngine == "" || dbHost == "" || dbPort == "" || dbUser == "" || dbPassword == "" || dbName == "" {
		slog.Info("No database connection provided, using sqlite")
		dbEngine = "sqlite"
		dbHost = ""
		dbPort = ""
		dbUser = ""
		dbPassword = ""
		dbName = "caom.db"
	}

	imageKitId := os.Getenv("CAOM_IMAGEKIT_ID")
	if imageKitId == "" {
		slog.Info("No imagekit id provided, not using imagekit")
	}
	// Inititlize AppContext
	var appContext = &config{
		AdminPassword: adminPassword,
		Instance:      instance,
		Tag:           tag,

		JwtSecret:   secret,
		JwtIssuer:   issuer,
		JwtAudience: audience,

		DBEngine:   dbEngine,
		DBHost:     dbHost,
		DBPort:     dbPort,
		DBUser:     dbUser,
		DBPassword: dbPassword,
		DBName:     dbName,

		ImageKitId: imageKitId,
	}
	return appContext

}

func Init() {
	Config = Load()
}