NdoleStudio / httpsms

import (

	"context"

	"errors"

	"fmt"

	"time"

	"github.com/NdoleStudio/httpsms/pkg/entities"

	"github.com/NdoleStudio/httpsms/pkg/telemetry"

	"github.com/dgraph-io/ristretto/v2"

	"github.com/google/uuid"

	"github.com/palantir/stacktrace"

	"gorm.io/gorm"

)

// gormPhoneRepository is responsible for persisting entities.Phone

type gormPhoneRepository struct {

	logger telemetry.Logger

	tracer telemetry.Tracer

	cache  *ristretto.Cache[string, *entities.Phone]

	db     *gorm.DB

		logger: logger.WithService(fmt.Sprintf("%T", &gormPhoneRepository{})),

		tracer: tracer,

		db:     db,

		cache:  cache,

	}

}

func (repository *gormPhoneRepository) DeleteAllForUser(ctx context.Context, userID entities.UserID) error {

	ctx, span := repository.tracer.Start(ctx)

	defer span.End()

	if err := repository.db.WithContext(ctx).Where("user_id = ?", userID).Delete(&entities.Phone{}).Error; err != nil {

		msg := fmt.Sprintf("cannot delete all [%T] for user with ID [%s]", &entities.Phone{}, userID)

		return repository.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))

	}

	repository.cache.Clear()

	return nil

}

// LoadByID loads a phone by ID

func (repository *gormPhoneRepository) LoadByID(ctx context.Context, userID entities.UserID, phoneID uuid.UUID) (*entities.Phone, error) {

	ctx, span := repository.tracer.Start(ctx)

	defer span.End()

	phone := new(entities.Phone)

	err := repository.db.WithContext(ctx).

		Where("user_id = ?", userID).

		Where("id = ?", phoneID).

		First(&phone).Error

	if errors.Is(err, gorm.ErrRecordNotFound) {

		msg := fmt.Sprintf("phone with ID [%s] does not exist", phoneID)

		return nil, repository.tracer.WrapErrorSpan(span, stacktrace.PropagateWithCode(err, ErrCodeNotFound, msg))

	}

	if err != nil {

		msg := fmt.Sprintf("cannot load phone with ID [%s]", phoneID)

		return nil, repository.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))

	}

	return phone, nil

}

// Delete an entities.Phone

func (repository *gormPhoneRepository) Delete(ctx context.Context, userID entities.UserID, phoneID uuid.UUID) error {

	ctx, span := repository.tracer.Start(ctx)

	defer span.End()

	err := repository.db.WithContext(ctx).

		Where("user_id = ?", userID).

		Where("id = ?", phoneID).

		Delete(&entities.Phone{}).Error

	if err != nil {

		msg := fmt.Sprintf("cannot delete phone with ID [%s] and userID [%s]", phoneID, userID)

		return repository.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))

	}

	repository.cache.Clear()

	return nil

}

// Save a new entities.Phone

func (repository *gormPhoneRepository) Save(ctx context.Context, phone *entities.Phone) error {

	ctx, span, ctxLogger := repository.tracer.StartWithLogger(ctx, repository.logger)

	defer span.End()

	err := repository.db.WithContext(ctx).Save(phone).Error

	if errors.Is(err, gorm.ErrDuplicatedKey) {

		ctxLogger.Info(fmt.Sprintf("phone with user [%s] and number[%s] already exists", phone.UserID, phone.PhoneNumber))

		loadedPhone, err := repository.Load(ctx, phone.UserID, phone.PhoneNumber)

		if err != nil {

			msg := fmt.Sprintf("cannot load phone for user [%s] and number [%s]", phone.UserID, phone.PhoneNumber)

			return repository.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))

		}

		*phone = *loadedPhone

		return nil

	}

	if err != nil {

		msg := fmt.Sprintf("cannot save phone with ID [%s]", phone.ID)

		return repository.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))

	}

	repository.cache.Del(repository.getCacheKey(phone.UserID, phone.PhoneNumber))

	return nil

}

// Load a phone based on entities.UserID and phoneNumber

func (repository *gormPhoneRepository) Load(ctx context.Context, userID entities.UserID, phoneNumber string) (*entities.Phone, error) {

	ctx, span, ctxLogger := repository.tracer.StartWithLogger(ctx, repository.logger)

	defer span.End()

	if phone, found := repository.cache.Get(repository.getCacheKey(userID, phoneNumber)); found {

		ctxLogger.Info(fmt.Sprintf("cache hit for [%T] with ID [%s]", phone, userID))

		return phone, nil

	}

	phone := new(entities.Phone)

	err := repository.db.WithContext(ctx).Where("user_id = ?", userID).Where("phone_number = ?", phoneNumber).First(phone).Error

	if errors.Is(err, gorm.ErrRecordNotFound) {

		msg := fmt.Sprintf("phone with userID [%s] and phoneNumber [%s] does not exist", userID, phoneNumber)

		return nil, repository.tracer.WrapErrorSpan(span, stacktrace.PropagateWithCode(err, ErrCodeNotFound, msg))

	}

	if err != nil {

		msg := fmt.Sprintf("cannot load phone phone with userID [%s] and phoneNumber [%s]", userID, phoneNumber)

		return nil, repository.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))

	}

	if result := repository.cache.SetWithTTL(repository.getCacheKey(userID, phoneNumber), phone, 1, 30*time.Minute); !result {

		msg := fmt.Sprintf("cannot cache [%T] with ID [%s] and result [%t]", phone, phone.ID, result)

		ctxLogger.Error(repository.tracer.WrapErrorSpan(span, stacktrace.NewError(msg)))

	}

	return phone, nil

}

func (repository *gormPhoneRepository) Index(ctx context.Context, userID entities.UserID, params IndexParams) (*[]entities.Phone, error) {

	ctx, span := repository.tracer.Start(ctx)

	defer span.End()

	query := repository.db.WithContext(ctx).Where("user_id = ?", userID)

	if len(params.Query) > 0 {

		queryPattern := "%" + params.Query + "%"

		query.Where("phone_number ILIKE ?", queryPattern)

	}

	phones := new([]entities.Phone)

	if err := query.Order("created_at DESC").Limit(params.Limit).Offset(params.Skip).Find(&phones).Error; err != nil {

		msg := fmt.Sprintf("cannot fetch phones with userID [%s] and params [%+#v]", userID, params)

		return nil, repository.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, msg))

	}

	return phones, nil

}

func (repository *gormPhoneRepository) getCacheKey(userID entities.UserID, phoneNumber string) string {

	return fmt.Sprintf("user:%s:phone:%s", userID, phoneNumber)

}