package config

import (
	"os"
	"strings"

	"github.com/joho/godotenv"
	"go.uber.org/zap"
)

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

	GiteaOauthInstance      string
	GiteaOauthClientID      string
	GiteaOauthClientSecret  string
	GiteaOauthAllowedEmails []string
}

func Load(logger *zap.Logger) *Config {
	err := godotenv.Load()
	if err != nil {
		logger.Warn("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 == "" {
		logger.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 == "" {
		logger.Info("No jwt issuer provided, using default issuer 'CatsOfMastodonBotGo'")
		issuer = "CatsOfMastodonBotGo"
	}
	audience := os.Getenv("CAOM_JWT_AUDIENCE")
	if audience == "" {
		logger.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")

	giteaOauthInstance := os.Getenv("CAOM_GITEA_OAUTH_INSTANCE")
	giteaOauthClientID := os.Getenv("CAOM_GITEA_OAUTH_CLIENT_ID")
	giteaOauthClientSecret := os.Getenv("CAOM_GITEA_OAUTH_CLIENT_SECRET")

	giteaOauthAllowedEmails := os.Getenv("CAOM_GITEA_OAUTH_ALLOWED_EMAILS")
	var giteaOauthAllowedEmailsParsed []string
	if giteaOauthAllowedEmails != "" {
		giteaOauthAllowedEmailsParsed = strings.Split(giteaOauthAllowedEmails, ",")
	}

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

	imageKitId := os.Getenv("CAOM_IMAGEKIT_ID")
	if imageKitId == "" {
		logger.Info("No imagekit id provided, not using imagekit.io")
	}
	// Initialize AppContext
	return &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,

		GiteaOauthInstance:      giteaOauthInstance,
		GiteaOauthClientID:      giteaOauthClientID,
		GiteaOauthClientSecret:  giteaOauthClientSecret,
		GiteaOauthAllowedEmails: giteaOauthAllowedEmailsParsed,
	}
}