feat: implement auto-save functionality for schedule config changes and enhance UI with loading indicator

src/components/config/ConfigTabs.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useState } from 'react';
+import { useEffect, useState, useCallback, useRef } from 'react';
 import { GitHubConfigForm } from './GitHubConfigForm';
 import { GiteaConfigForm } from './GiteaConfigForm';
 import { ScheduleConfigForm } from './ScheduleConfigForm';
@@ -52,6 +52,8 @@ export function ConfigTabs() {
   const [isLoading, setIsLoading] = useState(true);
   const [isSyncing, setIsSyncing] = useState<boolean>(false);
   const [isConfigSaved, setIsConfigSaved] = useState<boolean>(false);
+  const [isAutoSaving, setIsAutoSaving] = useState<boolean>(false);
+  const autoSaveTimeoutRef = useRef<NodeJS.Timeout | null>(null);
 
   const isConfigFormValid = (): boolean => {
     const { githubConfig, giteaConfig } = config;
@@ -150,6 +152,65 @@ export function ConfigTabs() {
     }
   };
 
+  // Auto-save function specifically for schedule config changes
+  const autoSaveScheduleConfig = useCallback(async (scheduleConfig: ScheduleConfig) => {
+    if (!user?.id || !isConfigSaved) return; // Only auto-save if config was previously saved
+
+    // Clear any existing timeout
+    if (autoSaveTimeoutRef.current) {
+      clearTimeout(autoSaveTimeoutRef.current);
+    }
+
+    // Debounce the auto-save to prevent excessive API calls
+    autoSaveTimeoutRef.current = setTimeout(async () => {
+      setIsAutoSaving(true);
+
+      const reqPayload: SaveConfigApiRequest = {
+        userId: user.id!,
+        githubConfig: config.githubConfig,
+        giteaConfig: config.giteaConfig,
+        scheduleConfig: scheduleConfig,
+      };
+
+      try {
+        const response = await fetch('/api/config', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(reqPayload),
+        });
+        const result: SaveConfigApiResponse = await response.json();
+
+        if (result.success) {
+          // Silent success - no toast for auto-save
+          await refreshUser();
+        } else {
+          toast.error(
+            `Auto-save failed: ${result.message || 'Unknown error'}`,
+            { duration: 3000 }
+          );
+        }
+      } catch (error) {
+        toast.error(
+          `Auto-save error: ${
+            error instanceof Error ? error.message : String(error)
+          }`,
+          { duration: 3000 }
+        );
+      } finally {
+        setIsAutoSaving(false);
+      }
+    }, 500); // 500ms debounce
+  }, [user?.id, isConfigSaved, config.githubConfig, config.giteaConfig, refreshUser]);
+
+  // Cleanup timeout on unmount
+  useEffect(() => {
+    return () => {
+      if (autoSaveTimeoutRef.current) {
+        clearTimeout(autoSaveTimeoutRef.current);
+      }
+    };
+  }, []);
+
   useEffect(() => {
     if (!user) return;
 
@@ -331,6 +392,8 @@ export function ConfigTabs() {
                   : update,
             }))
           }
+          onAutoSave={autoSaveScheduleConfig}
+          isAutoSaving={isAutoSaving}
         />
       </div>
     </div>

src/components/config/ScheduleConfigForm.tsx

@@ -9,33 +9,36 @@ import {
   SelectTrigger,
   SelectValue,
 } from "../ui/select";
+import { RefreshCw } from "lucide-react";
 
 interface ScheduleConfigFormProps {
   config: ScheduleConfig;
   setConfig: React.Dispatch<React.SetStateAction<ScheduleConfig>>;
+  onAutoSave?: (config: ScheduleConfig) => void;
+  isAutoSaving?: boolean;
 }
 
 export function ScheduleConfigForm({
   config,
   setConfig,
+  onAutoSave,
+  isAutoSaving = false,
 }: ScheduleConfigFormProps) {
   const handleChange = (
     e: React.ChangeEvent<HTMLInputElement | HTMLSelectElement>
   ) => {
     const { name, value, type } = e.target;
-    setConfig({
+    const newConfig = {
       ...config,
       [name]:
         type === "checkbox" ? (e.target as HTMLInputElement).checked : value,
-    });
-  };
+    };
+    setConfig(newConfig);
 
-  // Convert seconds to human-readable format
-  const formatInterval = (seconds: number): string => {
-    if (seconds < 60) return `${seconds} seconds`;
-    if (seconds < 3600) return `${Math.floor(seconds / 60)} minutes`;
-    if (seconds < 86400) return `${Math.floor(seconds / 3600)} hours`;
-    return `${Math.floor(seconds / 86400)} days`;
+    // Trigger auto-save for schedule config changes
+    if (onAutoSave) {
+      onAutoSave(newConfig);
+    }
   };
 
   // Predefined intervals
@@ -55,7 +58,13 @@ export function ScheduleConfigForm({
 
   return (
     <Card>
-      <CardContent className="pt-6">
+      <CardContent className="pt-6 relative">
+        {isAutoSaving && (
+          <div className="absolute top-4 right-4 flex items-center text-sm text-muted-foreground">
+            <RefreshCw className="h-3 w-3 animate-spin mr-1" />
+            <span className="text-xs">Auto-saving...</span>
+          </div>
+        )}
         <div className="flex flex-col gap-y-4">
           <div className="flex items-center">
             <Checkbox