package useCases

import (
	"RenewCMS/internal/domain/audit"
	"RenewCMS/internal/domain/hash"
	"RenewCMS/internal/domain/user"
	"context"
	"time"
)

type VerifyUserUseCase struct {
	userRepository user.Repository
	hasher         hash.Hasher
	recorder       audit.Recorder
}

func NewVerifyUserUseCase(userRepository user.Repository, hasher hash.Hasher, recorder audit.Recorder) *VerifyUserUseCase {
	return &VerifyUserUseCase{userRepository, hasher, recorder}
}

func (v *VerifyUserUseCase) Verify(ctx context.Context, userId uint32, code string) (user.User, error) {
	dbUser, err := v.userRepository.Get(userId)
	if err != nil {
		return user.User{}, err
	}

	event := audit.NewEvent(audit.ActionUserVerify, audit.CategoryUsers)
	event.Actor = audit.UserActor(dbUser)
	event.Target = audit.NewTarget(audit.TargetUser, dbUser.ID, dbUser.Username)
	verified, err := v.verify(dbUser, code)
	if err != nil {
		recordFailure(ctx, v.recorder, event, err)
		return user.User{}, err
	}
	v.recorder.Record(ctx, event)
	return verified, nil
}

func (v *VerifyUserUseCase) verify(dbUser user.User, code string) (user.User, error) {
	if dbUser.VerificationCode == "" || v.hasher.Compare(dbUser.VerificationCode, code) != nil {
		return user.User{}, user.ErrInvalidVerificationCode
	}

	if time.Now().After(dbUser.VerificationExpiration) {
		return user.User{}, user.ErrVerificationCodeExpired
	}

	return v.userRepository.ClearVerificationCode(dbUser.ID)
}