guestbook/internal/models/guestbookcomment.go

package models

import (
	"database/sql"
	"time"
)

type GuestbookComment struct {
    ID int64
    ShortId uint64
    GuestbookId int64
    ParentId int64
    AuthorName string
    AuthorEmail string
    AuthorSite string
    CommentText string
    PageUrl string
    Created time.Time
    IsPublished bool
    IsDeleted bool
}

type GuestbookCommentModel struct {
    DB *sql.DB
}

func (m *GuestbookCommentModel) Insert(shortId uint64, guestbookId, parentId int64, authorName,
    authorEmail, authorSite, commentText, pageUrl string, isPublished bool) (int64, error) {
    stmt := `INSERT INTO guestbook_comments (ShortId, GuestbookId, ParentId, AuthorName,
    AuthorEmail, AuthorSite, CommentText, PageUrl, Created, IsPublished, IsDeleted)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, FALSE)`
    result, err := m.DB.Exec(stmt, shortId, guestbookId, parentId, authorName, authorEmail,
	authorSite, commentText, pageUrl, time.Now().UTC(), isPublished)
    if err != nil {
	return -1, err
    }
    id, err := result.LastInsertId()
    if err != nil {
	return -1, err
    }
    return id, nil
}

func (m *GuestbookCommentModel) Get(shortId uint64) (GuestbookComment, error) {
    stmt := `SELECT Id, ShortId, GuestbookId, ParentId, AuthorName, AuthorEmail, AuthorSite,
    CommentText, PageUrl, Created, IsPublished, IsDeleted FROM guestbook_comments WHERE ShortId = ?`
    row := m.DB.QueryRow(stmt, shortId)
    var c GuestbookComment
    err := row.Scan(&c.ID, &c.ShortId, &c.GuestbookId, &c.ParentId, &c.AuthorName, &c.AuthorEmail, &c.AuthorSite, &c.CommentText, &c.PageUrl, &c.Created, &c.IsPublished, &c.IsDeleted)
    if err != nil {
	return GuestbookComment{}, err
    }
    return c, nil
}

func (m *GuestbookCommentModel) GetAll(guestbookId int64) ([]GuestbookComment, error) {
    stmt := `SELECT Id, ShortId, GuestbookId, ParentId, AuthorName, AuthorEmail, AuthorSite,
    CommentText, PageUrl, Created, IsPublished, IsDeleted FROM guestbook_comments WHERE GuestbookId = ? AND IsDeleted = FALSE ORDER BY Created DESC`
    rows, err := m.DB.Query(stmt, guestbookId)
    if err != nil {
	return nil, err
    }
    var comments []GuestbookComment
    for rows.Next() {
	var c GuestbookComment
	err = rows.Scan(&c.ID, &c.ShortId, &c.GuestbookId, &c.ParentId, &c.AuthorName, &c.AuthorEmail, &c.AuthorSite, &c.CommentText, &c.PageUrl, &c.Created, &c.IsPublished, &c.IsDeleted)
	if err != nil {
	    return nil, err
	}
	comments = append(comments, c)
    }
    if err = rows.Err(); err != nil {
	return nil, err
    }
    return comments, nil
}