package main

import (
	"context"
	"errors"
	"gitea.pena/PenaSide/common/validate"
	dalBS "gitea.pena/SQuiz/answerer/internal/dal"
	"gitea.pena/SQuiz/answerer/internal/initialize"
	"gitea.pena/SQuiz/common/dal"
	"github.com/caarlos0/env/v8"
	"log"
)

func main() {
	cfg, err := loadConfig()
	if err != nil {
		log.Fatalf("error loading config: %v", err)
	}

	err = validateNotEmpty(cfg)
	if err != nil {
		log.Fatalf("error validating config: %v", err)
	}

	err = validate.ValidateEncryptKeys(&cfg.ExternalCfg.EncryptCommon)
	if err != nil {
		log.Fatalf("error validating EncryptKeys: %v", err)
	}

	err = validate.ValidateS3(validate.ValidateS3Deps{
		S3Endpoint:  cfg.S3Endpoint,
		S3SecretKey: cfg.S3SecretKey,
		S3AccessKey: cfg.S3AccessKey,
		IsProd:      cfg.IsProd,
		BucketName:  dalBS.Bucket,
	})
	if err != nil {
		log.Fatalf("error validating S3: %v", err)
	}

	_, err = dal.New(context.TODO(), cfg.PostgresURL, nil)
	if err != nil {
		log.Fatalf("error connecting to postgres: %v", err)
	}

	err = validate.ValidateRedis(cfg.RedisHost, cfg.RedisPassword, int(cfg.RedisDB))
	if err != nil {
		log.Fatalf("error validating Redis: %v", err)
	}

	return
}

func loadConfig() (initialize.Config, error) {
	var cfg initialize.Config

	if err := env.Parse(&cfg); err != nil {
		return cfg, err
	}
	return cfg, nil
}

func validateNotEmpty(cfg initialize.Config) error {
	if cfg.ClientHttpURL == "" {
		return errors.New("client http url cannot be empty")
	}

	if cfg.RedirectURL == "" {
		return errors.New("redirect url cannot be empty")
	}

	if cfg.TrashLogHost == "" {
		return errors.New("trash log host cannot be empty")
	}

	if cfg.ExternalCfg.EncryptCommon.PrivKey == "" {
		return errors.New("private key cannot be empty")
	}

	if cfg.ExternalCfg.EncryptCommon.PubKey == "" {
		return errors.New("public key cannot be empty")
	}

	return nil
}