Added some monitoring widgets and scripts

monitor/service.go

@@ -0,0 +1,58 @@
+package monitor
+
+import (
+	"bytes"
+	"os"
+	"os/exec"
+	"path"
+	"strings"
+)
+
+type Config struct {
+	ScriptsDir string `json:"scriptsDir"`
+}
+
+type Service struct {
+	Config *Config
+
+	scriptPaths map[string]string
+}
+
+func NewService(config *Config) *Service {
+	return &Service{
+		Config: config,
+	}
+}
+
+func (s *Service) LoadScripts() error {
+	entries, err := os.ReadDir(s.Config.ScriptsDir)
+	if err != nil {
+		return err
+	}
+
+	s.scriptPaths = map[string]string{}
+
+	for _, entry := range entries {
+		newScriptPath := path.Join(s.Config.ScriptsDir, entry.Name())
+		s.scriptPaths[entry.Name()] = newScriptPath
+	}
+
+	return nil
+}
+
+// TODO: Add caching
+func (s *Service) GetLastOutput(command string) (string, error) {
+	args := strings.Fields(command)
+
+	scriptPath := s.scriptPaths[args[0]]
+
+	cmd := exec.Command(scriptPath, args[1:]...)
+	var b bytes.Buffer
+	cmd.Stdout = &b
+
+	if err := cmd.Run(); err != nil {
+		return "", err
+	}
+
+	return b.String(), nil
+}