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118 lines
2.3 KiB
118 lines
2.3 KiB
package post
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import (
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"context"
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"database/sql"
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models "blog/models"
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pRepo "blog/repository"
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)
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// NewSQLPostRepo ...
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func NewSQLPostRepo(Conn *sql.DB) pRepo.PostRepo {
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return &mysqlPostRepo{
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Conn: Conn,
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}
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}
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type mysqlPostRepo struct {
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Conn *sql.DB
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}
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// fetch ...
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func (m *mysqlPostRepo) fetch(ctx context.Context, query string, args ...interface{}) ([]*models.Post, error) {
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rows, err := m.Conn.QueryContext(ctx, query, args...)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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payload := make([]*models.Post, 0)
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for rows.Next() {
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data := new(models.Post)
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err := rows.Scan(
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&data.ID,
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&data.Title,
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&data.Content,
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)
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if err != nil {
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return nil, err
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}
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payload = append(payload, data)
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}
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return payload, nil
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}
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func (m *mysqlPostRepo) Fetch(ctx context.Context, num int64) ([]*models.Post, error) {
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query := "Select id, title, content From posts limit ?"
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return m.fetch(ctx, query, num)
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}
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func (m *mysqlPostRepo) GetByID(ctx context.Context, id int64) (*models.Post, error) {
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query := "Select id, title, content From posts where id=?"
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rows, err := m.fetch(ctx, query, id)
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if err != nil {
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return nil, err
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}
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payload := &models.Post{}
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if len(rows) > 0 {
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payload = rows[0]
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} else {
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return nil, models.ErrNotFound
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}
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return payload, nil
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}
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func (m *mysqlPostRepo) Create(ctx context.Context, p *models.Post) (int64, error) {
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query := "Insert posts SET title=?, content=?"
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stmt, err := m.Conn.PrepareContext(ctx, query)
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if err != nil {
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return -1, err
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}
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res, err := stmt.ExecContext(ctx, p.Title, p.Content)
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defer stmt.Close()
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if err != nil {
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return -1, err
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}
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return res.LastInsertId()
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}
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func (m *mysqlPostRepo) Update(ctx context.Context, p *models.Post) (*models.Post, error) {
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query := "Update posts set title=?, content=? where id=?"
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stmt, err := m.Conn.PrepareContext(ctx, query)
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if err != nil {
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return nil, err
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}
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_, err = stmt.ExecContext(
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ctx,
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p.Title,
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p.Content,
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p.ID,
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)
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if err != nil {
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return nil, err
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}
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defer stmt.Close()
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return p, nil
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}
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func (m *mysqlPostRepo) Delete(ctx context.Context, id int64) (bool, error) {
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query := "Delete From posts Where id=?"
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stmt, err := m.Conn.PrepareContext(ctx, query)
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if err != nil {
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return false, err
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}
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_, err = stmt.ExecContext(ctx, id)
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if err != nil {
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return false, err
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}
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defer stmt.Close()
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return true, nil
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}
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