Move everything to backend

backend/playerService.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"fmt"
+	"log"
+)
+
+type PlayerService struct {
+	db *DB
+}
+type PlayerServiceQuery struct {
+	Name *string `db:"name"`
+	ID   *int64  `db:"id"`
+}
+
+func (ps *PlayerService) Query(query PlayerServiceQuery) ([]Player, error) {
+	res := []Player{}
+	sqlQuery := "SELECT id, name, guild FROM player"
+	whereQuery := BuildWhereQuery(query)
+	if whereQuery != "" {
+		sqlQuery += " " + whereQuery
+	}
+
+	rows, err := ps.db.readConn.Query(sqlQuery)
+	if err != nil {
+		return res, fmt.Errorf("failed getting players for query %q: %v", sqlQuery, err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		player := Player{}
+		err := rows.Scan(&player.ID, &player.Name, &player.Guild.ID)
+		if err != nil {
+			return res, fmt.Errorf("failed scanning player: %v", err)
+		}
+		res = append(res, player)
+	}
+
+	return res, nil
+}
+
+func (ps *PlayerService) Create(name string, guild Guild) (Player, error) {
+	log.Printf("Creating player %s in guild %s", name, guild.Name)
+	player := Player{}
+	res, err := ps.db.writeConn.Exec("insert into player (name, guild) values (?, ?)", name, guild.ID)
+	if err != nil {
+		return player, fmt.Errorf("failed to insert player: %v", err)
+	}
+
+	id, err := res.LastInsertId()
+	if err != nil {
+		return player, fmt.Errorf("failed to get last insert id: %v", err)
+	}
+	log.Printf("Created player %s in guild %s with id %d", name, guild.Name, id)
+
+	qres, err := ps.Query(PlayerServiceQuery{ID: &id})
+	if err != nil {
+		return player, fmt.Errorf("failed getting player for id %d: %v", id, err)
+	}
+	if len(qres) > 1 {
+		return player, fmt.Errorf("more than one player found for id %d", id)
+	}
+
+	return qres[0], nil
+}
+
+func (ps *PlayerService) GetOrCreate(name string, guild Guild) (Player, error) {
+	player := Player{}
+	players, err := ps.Query(PlayerServiceQuery{Name: &name})
+	if len(players) > 1 {
+		return player, fmt.Errorf("more than one player found for name %s", name)
+	}
+	if err != nil || len(players) == 0 {
+		player, err = ps.Create(name, guild)
+		if err != nil {
+			return player, fmt.Errorf("failed creating player: %v", err)
+		}
+	}
+	if len(players) == 1 {
+		player = players[0]
+	}
+	return player, nil
+}