AzenKain
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298 lines
8.1 KiB
Go
298 lines
8.1 KiB
Go
package repositories
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import (
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"context"
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"crypto/md5"
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"encoding/json"
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"fmt"
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"history-api/internal/gen/sqlc"
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"history-api/internal/models"
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"history-api/pkg/cache"
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"history-api/pkg/constants"
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"history-api/pkg/convert"
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"github.com/jackc/pgx/v5/pgtype"
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)
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type MediaRepository interface {
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GetByID(ctx context.Context, id pgtype.UUID) (*models.MediaEntity, error)
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GetByIDs(ctx context.Context, ids []string) ([]*models.MediaEntity, error)
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GetByUserID(ctx context.Context, userId pgtype.UUID) ([]*models.MediaEntity, error)
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Search(ctx context.Context, params sqlc.SearchMediasParams) ([]*models.MediaEntity, error)
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Count(ctx context.Context, params sqlc.CountMediasParams) (int64, error)
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Delete(ctx context.Context, id pgtype.UUID) error
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BulkDelete(ctx context.Context, ids []pgtype.UUID) error
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Create(ctx context.Context, params sqlc.CreateMediaParams) (*models.MediaEntity, error)
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}
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type mediaRepository struct {
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q *sqlc.Queries
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c cache.Cache
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}
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func NewMediaRepository(db sqlc.DBTX, c cache.Cache) MediaRepository {
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return &mediaRepository{
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q: sqlc.New(db),
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c: c,
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}
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}
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func (r *mediaRepository) generateQueryKey(prefix string, params any) string {
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b, _ := json.Marshal(params)
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hash := fmt.Sprintf("%x", md5.Sum(b))
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return fmt.Sprintf("%s:%s", prefix, hash)
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}
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func (r *mediaRepository) getByIDsWithFallback(ctx context.Context, ids []string) ([]*models.MediaEntity, error) {
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if len(ids) == 0 {
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return []*models.MediaEntity{}, nil
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}
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keys := make([]string, len(ids))
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for i, id := range ids {
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keys[i] = fmt.Sprintf("media:id:%s", id)
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}
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raws := r.c.MGet(ctx, keys...)
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var medias []*models.MediaEntity
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missingMediasToCache := make(map[string]any)
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for i, b := range raws {
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if len(b) > 0 {
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var m models.MediaEntity
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if err := json.Unmarshal(b, &m); err == nil {
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medias = append(medias, &m)
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}
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} else {
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pgId := pgtype.UUID{}
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err := pgId.Scan(ids[i])
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if err != nil {
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continue
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}
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dbMedia, err := r.GetByID(ctx, pgId)
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if err == nil && dbMedia != nil {
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medias = append(medias, dbMedia)
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missingMediasToCache[keys[i]] = dbMedia
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}
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}
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}
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if len(missingMediasToCache) > 0 {
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_ = r.c.MSet(ctx, missingMediasToCache, constants.NormalCacheDuration)
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}
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return medias, nil
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}
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func (r *mediaRepository) GetByIDs(ctx context.Context, ids []string) ([]*models.MediaEntity, error) {
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return r.getByIDsWithFallback(ctx, ids)
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}
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func (r *mediaRepository) GetByID(ctx context.Context, id pgtype.UUID) (*models.MediaEntity, error) {
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cacheId := fmt.Sprintf("media:id:%s", convert.UUIDToString(id))
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var media models.MediaEntity
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err := r.c.Get(ctx, cacheId, &media)
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if err == nil {
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_ = r.c.Set(ctx, cacheId, media, constants.NormalCacheDuration)
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return &media, nil
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}
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row, err := r.q.GetMediaByID(ctx, id)
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if err != nil {
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return nil, err
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}
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media = models.MediaEntity{
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ID: convert.UUIDToString(row.ID),
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UserID: convert.UUIDToString(row.UserID),
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StorageKey: row.StorageKey,
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OriginalName: row.OriginalName,
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MimeType: row.MimeType,
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Size: row.Size,
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FileMetadata: row.FileMetadata,
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CreatedAt: convert.TimeToPtr(row.CreatedAt),
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UpdatedAt: convert.TimeToPtr(row.UpdatedAt),
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}
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_ = r.c.Set(ctx, cacheId, media, constants.NormalCacheDuration)
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return &media, nil
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}
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func (r *mediaRepository) Create(ctx context.Context, params sqlc.CreateMediaParams) (*models.MediaEntity, error) {
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row, err := r.q.CreateMedia(ctx, params)
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if err != nil {
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return nil, err
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}
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go func() {
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bgCtx := context.Background()
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_ = r.c.DelByPattern(bgCtx, "media:search*")
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_ = r.c.DelByPattern(bgCtx, "media:count*")
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}()
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media := models.MediaEntity{
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ID: convert.UUIDToString(row.ID),
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UserID: convert.UUIDToString(row.UserID),
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StorageKey: row.StorageKey,
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OriginalName: row.OriginalName,
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MimeType: row.MimeType,
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Size: row.Size,
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FileMetadata: row.FileMetadata,
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CreatedAt: convert.TimeToPtr(row.CreatedAt),
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UpdatedAt: convert.TimeToPtr(row.UpdatedAt),
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}
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cacheId := fmt.Sprintf("media:id:%s", media.ID)
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_ = r.c.Set(ctx, cacheId, media, constants.NormalCacheDuration)
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return &media, nil
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}
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func (r *mediaRepository) Delete(ctx context.Context, id pgtype.UUID) error {
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err := r.q.DeleteMedia(ctx, id)
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if err != nil {
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return err
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}
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cacheId := fmt.Sprintf("media:id:%s", convert.UUIDToString(id))
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_ = r.c.Del(ctx, cacheId)
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return nil
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}
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func (r *mediaRepository) BulkDelete(ctx context.Context, ids []pgtype.UUID) error {
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if len(ids) == 0 {
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return nil
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}
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err := r.q.DeleteMedias(ctx, ids)
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if err != nil {
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return err
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}
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keys := make([]string, len(ids))
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for i, id := range ids {
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keys[i] = fmt.Sprintf("media:id:%s", convert.UUIDToString(id))
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}
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_ = r.c.Del(ctx, keys...)
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return nil
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}
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func (r *mediaRepository) Search(ctx context.Context, params sqlc.SearchMediasParams) ([]*models.MediaEntity, error) {
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queryKey := r.generateQueryKey("media:search", params)
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var cachedIDs []string
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if err := r.c.Get(ctx, queryKey, &cachedIDs); err == nil && len(cachedIDs) > 0 {
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listItem, err := r.getByIDsWithFallback(ctx, cachedIDs)
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if err != nil {
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return nil, err
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}
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newCachedIDs := make([]string, len(listItem))
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for i, media := range listItem {
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newCachedIDs[i] = media.ID
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}
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_ = r.c.Set(ctx, queryKey, newCachedIDs, constants.ListCacheDuration)
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return listItem, err
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}
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rows, err := r.q.SearchMedias(ctx, params)
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if err != nil {
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return nil, err
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}
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var medias []*models.MediaEntity
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var ids []string
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mediasToCache := make(map[string]any)
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for _, row := range rows {
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media := &models.MediaEntity{
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ID: convert.UUIDToString(row.ID),
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UserID: convert.UUIDToString(row.UserID),
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StorageKey: row.StorageKey,
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OriginalName: row.OriginalName,
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MimeType: row.MimeType,
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Size: row.Size,
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FileMetadata: row.FileMetadata,
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CreatedAt: convert.TimeToPtr(row.CreatedAt),
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UpdatedAt: convert.TimeToPtr(row.UpdatedAt),
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}
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ids = append(ids, media.ID)
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medias = append(medias, media)
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mediasToCache[fmt.Sprintf("media:id:%s", media.ID)] = media
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}
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if len(mediasToCache) > 0 {
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_ = r.c.MSet(ctx, mediasToCache, constants.NormalCacheDuration)
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}
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if len(ids) > 0 {
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_ = r.c.Set(ctx, queryKey, ids, constants.ListCacheDuration)
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}
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return medias, nil
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}
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func (r *mediaRepository) Count(ctx context.Context, params sqlc.CountMediasParams) (int64, error) {
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queryKey := r.generateQueryKey("media:count", params)
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var count int64
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if err := r.c.Get(ctx, queryKey, &count); err == nil {
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_ = r.c.Set(ctx, queryKey, count, constants.ListCacheDuration)
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return count, nil
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}
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count, err := r.q.CountMedias(ctx, params)
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if err != nil {
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return 0, err
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}
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_ = r.c.Set(ctx, queryKey, count, constants.ListCacheDuration)
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return count, nil
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}
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func (r *mediaRepository) GetByUserID(ctx context.Context, userId pgtype.UUID) ([]*models.MediaEntity, error) {
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queryKey := fmt.Sprintf("media:userId:%s", convert.UUIDToString(userId))
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var cachedIDs []string
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if err := r.c.Get(ctx, queryKey, &cachedIDs); err == nil && len(cachedIDs) > 0 {
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listItem, err := r.getByIDsWithFallback(ctx, cachedIDs)
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if err != nil {
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return nil, err
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}
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newCachedIDs := make([]string, len(listItem))
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for i, media := range listItem {
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newCachedIDs[i] = media.ID
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}
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_ = r.c.Set(ctx, queryKey, newCachedIDs, constants.ListCacheDuration)
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return listItem, nil
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}
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rows, err := r.q.GetMediasByUserID(ctx, userId)
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if err != nil {
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return nil, err
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}
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var medias []*models.MediaEntity
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var ids []string
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mediasToCache := make(map[string]any)
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for _, row := range rows {
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media := &models.MediaEntity{
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ID: convert.UUIDToString(row.ID),
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UserID: convert.UUIDToString(row.UserID),
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StorageKey: row.StorageKey,
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OriginalName: row.OriginalName,
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MimeType: row.MimeType,
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Size: row.Size,
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FileMetadata: row.FileMetadata,
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CreatedAt: convert.TimeToPtr(row.CreatedAt),
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UpdatedAt: convert.TimeToPtr(row.UpdatedAt),
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}
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ids = append(ids, media.ID)
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medias = append(medias, media)
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mediasToCache[fmt.Sprintf("media:id:%s", media.ID)] = media
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}
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if len(mediasToCache) > 0 {
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_ = r.c.MSet(ctx, mediasToCache, constants.NormalCacheDuration)
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}
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if len(ids) > 0 {
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_ = r.c.Set(ctx, queryKey, ids, constants.ListCacheDuration)
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}
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return medias, nil
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}
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