1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
package database
import (
"database/sql"
"log"
"time"
_ "github.com/mattn/go-sqlite3"
)
type ChatMessage struct {
ID string `json:"id"`
UserID string `json:"user_id"`
Nick string `json:"nick"`
Body string `json:"body"`
CreatedAt time.Time `json:"created_at"`
}
func GetRecentChat(db *sql.DB, limit int) ([]ChatMessage, error) {
rows, err := db.Query(
`SELECT c.id, c.user_id, u.username, c.body, c.created_at
FROM chat c JOIN users u ON u.id = c.user_id
ORDER BY c.created_at DESC LIMIT ?`,
limit,
)
if err != nil {
return nil, err
}
defer rows.Close()
messages := []ChatMessage{}
for rows.Next() {
var msg ChatMessage
if err := rows.Scan(&msg.ID, &msg.UserID, &msg.Nick, &msg.Body, &msg.CreatedAt); err != nil {
return nil, err
}
messages = append([]ChatMessage{msg}, messages...)
}
return messages, rows.Err()
}
func SaveChatMessage(db *sql.DB, msg *ChatMessage) (*ChatMessage, error) {
log.Println("saving chat message", msg.ID)
msg.CreatedAt = time.Now()
_, err := db.Exec(
"INSERT INTO chat (id, user_id, body, created_at) VALUES (?, ?, ?, ?)",
msg.ID, msg.UserID, msg.Body, msg.CreatedAt,
)
if err != nil {
return nil, err
}
return msg, nil
}
|
