feat(servers): implement saervers monitoring

internal/database/server_repository.go

@@ -0,0 +1,68 @@
+package database
+
+import (
+	"context"
+	"database/sql"
+
+	"gitea.mrixs.me/minecraft-platform/backend/internal/models"
+)
+
+type ServerRepository struct {
+	DB *sql.DB
+}
+
+// GetAllEnabledServers возвращает все активные серверы для опроса.
+func (r *ServerRepository) GetAllEnabledServers(ctx context.Context) ([]*models.GameServer, error) {
+	rows, err := r.DB.QueryContext(ctx, "SELECT id, name, address FROM game_servers WHERE is_enabled = TRUE")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var servers []*models.GameServer
+	for rows.Next() {
+		s := &models.GameServer{}
+		if err := rows.Scan(&s.ID, &s.Name, &s.Address); err != nil {
+			return nil, err
+		}
+		servers = append(servers, s)
+	}
+	return servers, nil
+}
+
+// UpdateServerStatus обновляет данные о статусе сервера.
+func (r *ServerRepository) UpdateServerStatus(ctx context.Context, id int, status *models.ServerStatus) error {
+	query := `
+		UPDATE game_servers SET
+		status_json = $1, last_polled_at = NOW(), motd = $2, player_count = $3,
+		max_players = $4, version_name = $5, ping_backend_server = $6
+		WHERE id = $7`
+	_, err := r.DB.ExecContext(ctx, query,
+		status.StatusJSON, status.Motd, status.PlayerCount, status.MaxPlayers,
+		status.VersionName, status.Ping, id)
+	return err
+}
+
+// GetAllWithStatus возвращает все активные серверы с их текущим статусом.
+func (r *ServerRepository) GetAllWithStatus(ctx context.Context) ([]*models.GameServer, error) {
+	query := `
+		SELECT id, name, address, is_enabled, last_polled_at, motd,
+		player_count, max_players, version_name, ping_backend_server
+		FROM game_servers WHERE is_enabled = TRUE ORDER BY name`
+	rows, err := r.DB.QueryContext(ctx, query)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var servers []*models.GameServer
+	for rows.Next() {
+		s := &models.GameServer{}
+		if err := rows.Scan(&s.ID, &s.Name, &s.Address, &s.IsEnabled, &s.LastPolledAt,
+			&s.Motd, &s.PlayerCount, &s.MaxPlayers, &s.VersionName, &s.PingBackendServer); err != nil {
+			return nil, err
+		}
+		servers = append(servers, s)
+	}
+	return servers, nil
+}