added twitch frontend components

server/twitch/monitor.go

@@ -83,6 +83,13 @@ func (m *Monitor) GetMonitoredUsers() iter.Seq[string] {
 	return maps.Keys(m.monitored)
 }
 
+func (m *Monitor) DeleteUser(user string) {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	delete(m.monitored, user)
+	delete(m.lastState, user)
+}
+
 func DEFAULT_DOWNLOAD_HANDLER(db *internal.MemoryDB, mq *internal.MessageQueue) func(url string) error {
 	return func(url string) error {
 		p := &internal.Process{

server/twitch/rest.go

@@ -4,6 +4,8 @@ import (
 	"encoding/json"
 	"net/http"
 	"slices"
+
+	"github.com/go-chi/chi/v5"
 )
 
 type addUserReq struct {
@@ -32,7 +34,30 @@ func GetMonitoredUsers(m *Monitor) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		it := m.GetMonitoredUsers()
 
-		if err := json.NewEncoder(w).Encode(slices.Collect(it)); err != nil {
+		users := slices.Collect(it)
+		if users == nil {
+			users = make([]string, 0)
+		}
+
+		if err := json.NewEncoder(w).Encode(users); err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+}
+
+func DeleteUser(m *Monitor) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		user := chi.URLParam(r, "user")
+
+		if user == "" {
+			http.Error(w, "empty user", http.StatusBadRequest)
+			return
+		}
+
+		m.DeleteUser(user)
+
+		if err := json.NewEncoder(w).Encode("ok"); err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}