Move everything to backend

backend/noteService.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"time"
+)
+
+type NoteService struct {
+	db *DB
+}
+type NoteServiceQuery struct {
+	Timestamp *string `db:"timestamp"`
+	PlayerID  *int64  `db:"player"`
+	ID        *int64  `db:"id"`
+}
+
+func (ns *NoteService) Query(query NoteServiceQuery) ([]Note, error) {
+	res := []Note{}
+	sqlQuery := "SELECT id, content, timestamp, player FROM note"
+	whereQuery := BuildWhereQuery(query)
+	if whereQuery != "" {
+		sqlQuery += " " + whereQuery
+	}
+
+	rows, err := ns.db.readConn.Query(sqlQuery)
+	if err != nil {
+		return res, fmt.Errorf("failed getting notes for query %q: %v", sqlQuery, err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		note := Note{}
+		var ts string
+		err := rows.Scan(&note.ID, &note.Content, &ts, &note.Player.ID)
+		if err != nil {
+			return res, fmt.Errorf("failed scanning note: %v", err)
+		}
+		note.Timestamp, err = time.Parse(time.RFC3339, ts)
+		if err != nil {
+			return res, fmt.Errorf("failed parsing timestamp: %v", err)
+		}
+		res = append(res, note)
+	}
+
+	return res, nil
+}
+
+func (ns *NoteService) Create(content string, timestamp time.Time, player Player) (Note, error) {
+	log.Printf("Creating note %q with timestamp %s and player %d", content, timestamp, player.ID)
+	note := Note{}
+	res, err := ns.db.writeConn.Exec("insert into note (content, timestamp, player) values (?, ?, ?)", content, timestamp.Format(time.RFC3339), player.ID)
+	if err != nil {
+		return note, fmt.Errorf("failed to insert note: %v", err)
+	}
+
+	id, err := res.LastInsertId()
+	if err != nil {
+		return note, fmt.Errorf("failed to get last insert id: %v", err)
+	}
+	log.Printf("Created note %q with timestamp %s and player %d with id %d", content, timestamp, player.ID, id)
+
+	qres, err := ns.Query(NoteServiceQuery{ID: &id})
+	if err != nil {
+		return note, fmt.Errorf("failed getting note for id %d: %v", id, err)
+	}
+	if len(qres) > 1 {
+		return note, fmt.Errorf("more than one note found for id %d", id)
+	}
+
+	return qres[0], nil
+}