more abstraction and simple dashboard for processes

mainPage/mainPage.go

@@ -0,0 +1,96 @@
+package mainPage
+
+import (
+	"embed"
+	"html/template"
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+	"processSupervisor/supervisor"
+	"time"
+)
+
+//go:embed templates
+var templatesFS embed.FS
+
+type MainPage struct {
+	Supervisor *supervisor.Supervisor
+}
+
+func NewMainPage(cfgDir string) (*MainPage, error) {
+	var sv supervisor.Supervisor
+	file := filepath.Join(cfgDir, "supervisorTemplate.json")
+	if _, err := os.Stat(file); err == nil {
+		sv, err = supervisor.ReadTemplate(file)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if err := sv.StartProcesses(); err != nil {
+		return nil, err
+	}
+	m := MainPage{
+		Supervisor: &sv,
+	}
+
+	return &m, nil
+}
+
+func (m *MainPage) LoadMainPage(w http.ResponseWriter, r *http.Request) {
+	tmpl := template.Must(
+		template.New("index.html").ParseFS(
+			templatesFS,
+			"templates/index.html",
+			"templates/processes.html",
+		),
+	)
+	tmpl.Execute(w, m)
+}
+
+func (m *MainPage) UpdateMainPage(w http.ResponseWriter, r *http.Request) {
+	tmpl := template.Must(
+		template.New("processes.html").ParseFS(
+			templatesFS,
+			"templates/processes.html",
+		),
+	)
+	tmpl.Execute(w, m)
+}
+
+func (m *MainPage) StartProcess(w http.ResponseWriter, r *http.Request) {
+	name := r.PostFormValue("name")
+
+	// This is where you trigger the .Start method
+	err := m.Supervisor.StartProcessByName(name)
+	if err != nil {
+		log.Println("Failed to start process", err)
+	}
+	m.UpdateMainPage(w, r)
+}
+
+func (m *MainPage) StopProcess(w http.ResponseWriter, r *http.Request) {
+	name := r.PostFormValue("name")
+
+	err := m.Supervisor.StopProcessByName(name)
+	if err != nil {
+		log.Println("Failed to stop process", err)
+	}
+	m.UpdateMainPage(w, r)
+}
+
+func (m *MainPage) RestartProcess(w http.ResponseWriter, r *http.Request) {
+	name := r.PostFormValue("name")
+
+	err := m.Supervisor.StopProcessByName(name)
+	if err != nil {
+		log.Println(err)
+	}
+	time.Sleep(time.Second)
+	err = m.Supervisor.StartProcessByName(name)
+	if err != nil {
+		log.Println(err)
+	}
+	m.UpdateMainPage(w, r)
+}