331 lines
8.0 KiB
Go
331 lines
8.0 KiB
Go
package repository
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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"tailly_clips/internal/domain"
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"time"
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)
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var (
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ErrClipNotFound = errors.New("clip not found")
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)
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type ClipRepository interface {
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Create(ctx context.Context, clip *domain.Clip) error
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GetByID(ctx context.Context, id int) (*domain.Clip, error)
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GetByAuthorID(ctx context.Context, authorID, limit, offset int) ([]*domain.Clip, int, error)
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GetAll(ctx context.Context, limit, offset int) ([]*domain.Clip, int, error)
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Delete(ctx context.Context, id int) error
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IncrementLikesCount(ctx context.Context, clipID int) error
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DecrementLikesCount(ctx context.Context, clipID int) error
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IncrementCommentsCount(ctx context.Context, clipID int) error
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DecrementCommentsCount(ctx context.Context, clipID int) error
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GetClipURLs(ctx context.Context, clipID int) (string, string, error)
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GetClipWithURLs(ctx context.Context, clipID int) (*domain.Clip, error)
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}
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type clipRepository struct {
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db *sql.DB
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}
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func NewClipRepository(db *sql.DB) ClipRepository {
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return &clipRepository{db: db}
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}
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func (r *clipRepository) Create(ctx context.Context, clip *domain.Clip) error {
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query := `
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INSERT INTO clips (title, video_url, thumbnail_url, author_id, likes_count, comments_count, created_at, updated_at)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
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RETURNING id
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`
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err := r.db.QueryRowContext(ctx, query,
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clip.Title,
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clip.VideoURL,
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clip.ThumbnailURL,
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clip.AuthorID,
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clip.LikesCount,
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clip.CommentsCount,
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clip.CreatedAt,
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clip.UpdatedAt,
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).Scan(&clip.ID)
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if err != nil {
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return fmt.Errorf("failed to create clip: %w", err)
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}
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return nil
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}
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func (r *clipRepository) GetByID(ctx context.Context, id int) (*domain.Clip, error) {
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query := `
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SELECT id, title, video_url, thumbnail_url, author_id,
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likes_count, comments_count, created_at, updated_at
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FROM clips
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WHERE id = $1 AND deleted_at IS NULL
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`
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clip := &domain.Clip{}
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err := r.db.QueryRowContext(ctx, query, id).Scan(
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&clip.ID,
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&clip.Title,
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&clip.VideoURL,
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&clip.ThumbnailURL,
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&clip.AuthorID,
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&clip.LikesCount,
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&clip.CommentsCount,
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&clip.CreatedAt,
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&clip.UpdatedAt,
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)
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if err == sql.ErrNoRows {
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return nil, ErrClipNotFound
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}
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if err != nil {
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return nil, fmt.Errorf("failed to get clip: %w", err)
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}
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return clip, nil
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}
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func (r *clipRepository) GetByAuthorID(ctx context.Context, authorID, limit, offset int) ([]*domain.Clip, int, error) {
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// Получаем общее количество
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countQuery := `SELECT COUNT(*) FROM clips WHERE author_id = $1 AND deleted_at IS NULL`
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var totalCount int
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err := r.db.QueryRowContext(ctx, countQuery, authorID).Scan(&totalCount)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to get total count: %w", err)
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}
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// Получаем клипы
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query := `
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SELECT id, title, video_url, thumbnail_url, author_id,
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likes_count, comments_count, created_at, updated_at
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FROM clips
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WHERE author_id = $1 AND deleted_at IS NULL
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ORDER BY created_at DESC
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LIMIT $2 OFFSET $3
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`
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rows, err := r.db.QueryContext(ctx, query, authorID, limit, offset)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to get clips: %w", err)
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}
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defer rows.Close()
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var clips []*domain.Clip
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for rows.Next() {
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clip := &domain.Clip{}
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err := rows.Scan(
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&clip.ID,
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&clip.Title,
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&clip.VideoURL,
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&clip.ThumbnailURL,
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&clip.AuthorID,
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&clip.LikesCount,
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&clip.CommentsCount,
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&clip.CreatedAt,
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&clip.UpdatedAt,
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)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to scan clip: %w", err)
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}
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clips = append(clips, clip)
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}
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if err = rows.Err(); err != nil {
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return nil, 0, fmt.Errorf("rows error: %w", err)
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}
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return clips, totalCount, nil
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}
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func (r *clipRepository) GetAll(ctx context.Context, limit, offset int) ([]*domain.Clip, int, error) {
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// Получаем общее количество
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countQuery := `SELECT COUNT(*) FROM clips WHERE deleted_at IS NULL`
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var totalCount int
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err := r.db.QueryRowContext(ctx, countQuery).Scan(&totalCount)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to get total count: %w", err)
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}
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// Получаем клипы
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query := `
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SELECT id, title, video_url, thumbnail_url, author_id,
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likes_count, comments_count, created_at, updated_at
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FROM clips
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WHERE deleted_at IS NULL
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ORDER BY created_at DESC
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LIMIT $1 OFFSET $2
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`
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rows, err := r.db.QueryContext(ctx, query, limit, offset)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to get clips: %w", err)
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}
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defer rows.Close()
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var clips []*domain.Clip
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for rows.Next() {
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clip := &domain.Clip{}
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err := rows.Scan(
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&clip.ID,
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&clip.Title,
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&clip.VideoURL,
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&clip.ThumbnailURL,
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&clip.AuthorID,
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&clip.LikesCount,
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&clip.CommentsCount,
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&clip.CreatedAt,
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&clip.UpdatedAt,
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)
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if err != nil {
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return nil, 0, fmt.Errorf("failed to scan clip: %w", err)
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}
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clips = append(clips, clip)
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}
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if err = rows.Err(); err != nil {
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return nil, 0, fmt.Errorf("rows error: %w", err)
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}
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return clips, totalCount, nil
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}
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func (r *clipRepository) Delete(ctx context.Context, id int) error {
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query := `
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UPDATE clips
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SET deleted_at = $1
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WHERE id = $2 AND deleted_at IS NULL
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`
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result, err := r.db.ExecContext(ctx, query, time.Now(), id)
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if err != nil {
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return fmt.Errorf("failed to delete clip: %w", err)
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}
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rowsAffected, err := result.RowsAffected()
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if err != nil {
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return fmt.Errorf("failed to get rows affected: %w", err)
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}
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if rowsAffected == 0 {
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return ErrClipNotFound
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}
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return nil
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}
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func (r *clipRepository) IncrementLikesCount(ctx context.Context, clipID int) error {
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query := `
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UPDATE clips
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SET likes_count = likes_count + 1, updated_at = $1
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WHERE id = $2 AND deleted_at IS NULL
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`
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_, err := r.db.ExecContext(ctx, query, time.Now(), clipID)
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if err != nil {
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return fmt.Errorf("failed to increment likes count: %w", err)
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}
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return nil
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}
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func (r *clipRepository) DecrementLikesCount(ctx context.Context, clipID int) error {
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query := `
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UPDATE clips
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SET likes_count = GREATEST(likes_count - 1, 0), updated_at = $1
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WHERE id = $2 AND deleted_at IS NULL
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`
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_, err := r.db.ExecContext(ctx, query, time.Now(), clipID)
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if err != nil {
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return fmt.Errorf("failed to decrement likes count: %w", err)
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}
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return nil
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}
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func (r *clipRepository) IncrementCommentsCount(ctx context.Context, clipID int) error {
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query := `
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UPDATE clips
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SET comments_count = comments_count + 1, updated_at = $1
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WHERE id = $2 AND deleted_at IS NULL
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`
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_, err := r.db.ExecContext(ctx, query, time.Now(), clipID)
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if err != nil {
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return fmt.Errorf("failed to increment comments count: %w", err)
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}
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return nil
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}
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func (r *clipRepository) DecrementCommentsCount(ctx context.Context, clipID int) error {
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query := `
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UPDATE clips
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SET comments_count = GREATEST(comments_count - 1, 0), updated_at = $1
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WHERE id = $2 AND deleted_at IS NULL
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`
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_, err := r.db.ExecContext(ctx, query, time.Now(), clipID)
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if err != nil {
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return fmt.Errorf("failed to decrement comments count: %w", err)
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}
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return nil
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}
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func (r *clipRepository) GetClipURLs(ctx context.Context, clipID int) (string, string, error) {
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query := `
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SELECT video_url, thumbnail_url
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FROM clips
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WHERE id = $1 AND deleted_at IS NULL
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`
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var videoURL, thumbnailURL string
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err := r.db.QueryRowContext(ctx, query, clipID).Scan(&videoURL, &thumbnailURL)
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if err == sql.ErrNoRows {
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return "", "", ErrClipNotFound
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}
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if err != nil {
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return "", "", fmt.Errorf("failed to get clip URLs: %w", err)
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}
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return videoURL, thumbnailURL, nil
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}
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func (r *clipRepository) GetClipWithURLs(ctx context.Context, clipID int) (*domain.Clip, error) {
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query := `
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SELECT id, title, video_url, thumbnail_url, author_id,
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likes_count, comments_count, created_at, updated_at
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FROM clips
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WHERE id = $1 AND deleted_at IS NULL
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`
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clip := &domain.Clip{}
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err := r.db.QueryRowContext(ctx, query, clipID).Scan(
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&clip.ID,
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&clip.Title,
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&clip.VideoURL,
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&clip.ThumbnailURL,
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&clip.AuthorID,
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&clip.LikesCount,
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&clip.CommentsCount,
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&clip.CreatedAt,
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&clip.UpdatedAt,
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)
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if err == sql.ErrNoRows {
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return nil, ErrClipNotFound
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}
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if err != nil {
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return nil, fmt.Errorf("failed to get clip: %w", err)
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}
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return clip, nil
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}
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