first commit

server/internal/service/system_service.go

@@ -0,0 +1,53 @@
+package service
+
+import (
+	"context"
+	"path/filepath"
+	"syscall"
+	"time"
+
+	"backupx/server/internal/config"
+)
+
+type SystemInfo struct {
+	Version       string `json:"version"`
+	Mode          string `json:"mode"`
+	StartedAt     string `json:"startedAt"`
+	UptimeSeconds int64  `json:"uptimeSeconds"`
+	DatabasePath  string `json:"databasePath"`
+	DiskTotal     int64  `json:"diskTotal"`
+	DiskFree      int64  `json:"diskFree"`
+	DiskUsed      int64  `json:"diskUsed"`
+}
+
+type SystemService struct {
+	cfg       config.Config
+	version   string
+	startedAt time.Time
+}
+
+func NewSystemService(cfg config.Config, version string, startedAt time.Time) *SystemService {
+	return &SystemService{cfg: cfg, version: version, startedAt: startedAt}
+}
+
+func (s *SystemService) GetInfo(_ context.Context) *SystemInfo {
+	now := time.Now().UTC()
+	info := &SystemInfo{
+		Version:       s.version,
+		Mode:          s.cfg.Server.Mode,
+		StartedAt:     s.startedAt.Format(time.RFC3339),
+		UptimeSeconds: int64(now.Sub(s.startedAt).Seconds()),
+		DatabasePath:  s.cfg.Database.Path,
+	}
+	dir := filepath.Dir(s.cfg.Database.Path)
+	if dir == "" {
+		dir = "."
+	}
+	var stat syscall.Statfs_t
+	if err := syscall.Statfs(dir, &stat); err == nil {
+		info.DiskTotal = int64(stat.Blocks) * int64(stat.Bsize)
+		info.DiskFree = int64(stat.Bavail) * int64(stat.Bsize)
+		info.DiskUsed = info.DiskTotal - info.DiskFree
+	}
+	return info
+}