working the get statement

snippetbox/internal/models/errors.go

@@ -0,0 +1,7 @@
+package models
+
+import (
+	"errors"
+)
+
+var ErrNoRecord = errors.New("models: no matchin record found")

snippetbox/internal/models/snippets.go

@@ -2,6 +2,7 @@ package models
 
 import (
 	"database/sql"
+	"errors"
 	"time"
 )
 
@@ -18,11 +19,31 @@ type SnippetModel struct {
 }
 
 func (m *SnippetModel) Insert(title string, content string, expires int) (int, error) {
-	return 0, nil
+	stmt := `INSERT INTO snippets (title, content,created,expires) VALUES( ?,?, UTC_TIMESTAMP(), DATE_ADD(UTC_TIMESTAMP(), INTERVAL ? DAY))`
+	result, err := m.DB.Exec(stmt, title, content, expires)
+	if err != nil {
+		return 0, err
+	}
+	id, err := result.LastInsertId()
+	if err != nil {
+		return 0, err
+	}
+	return int(id), nil
 }
 
 func (m *SnippetModel) Get(id int) (*Snippet, error) {
-	return nil, nil
+	stmt := `SELECT id, title, content, created, expires FROM snippets WHERE expires > UTC_TIMESTAMP() and id = ?`
+	row := m.DB.QueryRow(stmt, id)
+	s := &Snippet{}
+	err := row.Scan(&s.ID, &s.Title, &s.Content, &s.Created, &s.Expires)
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			return nil, ErrNoRecord
+		} else {
+			return nil, err
+		}
+	}
+	return s, nil
 }
 
 func (m *SnippetModel) Latest() ([]*Snippet, error) {