refactor(TagInput): optimize dropdown position handling and improve tag loading logic

- Replaced the dropdown position update logic with a dedicated calculatePosition function for clarity.
- Introduced a new state to track if popular tags have been loaded, enhancing the suggestion display logic.
- Cleaned up unnecessary event listeners and streamlined the component's focus handling.

src/components/ui/TagInput.tsx

@@ -31,11 +31,9 @@ export function TagInput({
   const [inputValue, setInputValue] = useState('');
   const [showSuggestions, setShowSuggestions] = useState(false);
   const [selectedIndex, setSelectedIndex] = useState(-1);
-  const [dropdownPosition, setDropdownPosition] = useState({
-    top: 0,
-    left: 0,
-    width: 0,
-  });
+  const [hasLoadedPopularTags, setHasLoadedPopularTags] = useState(false);
+  const [dropdownPosition, setDropdownPosition] = useState({ top: 0, left: 0 });
+  const [positionCalculated, setPositionCalculated] = useState(false);
   const inputRef = useRef<HTMLInputElement>(null);
   const suggestionsRef = useRef<HTMLDivElement>(null);
   const containerRef = useRef<HTMLDivElement>(null);
@@ -49,6 +47,20 @@ export function TagInput({
   } = useTagsAutocomplete();
   const [allTags, setAllTags] = useState<Tag[]>([]);
 
+  // Calculer la position du dropdown (copié du composant Dropdown)
+  const calculatePosition = () => {
+    if (!containerRef.current) return;
+
+    const rect = containerRef.current.getBoundingClientRect();
+
+    // Placement bottom-start (comme dans Dropdown)
+    const top = rect.bottom + 4;
+    const left = rect.left;
+
+    setDropdownPosition({ top, left });
+    setPositionCalculated(true);
+  };
+
   // Charger tous les tags au début pour pouvoir identifier le tag prioritaire
   useEffect(() => {
     const loadTags = async () => {
@@ -63,17 +75,15 @@ export function TagInput({
     loadTags();
   }, []);
 
-  // Calculer la position du dropdown
-  const updateDropdownPosition = () => {
-    if (containerRef.current) {
-      const rect = containerRef.current.getBoundingClientRect();
-      setDropdownPosition({
-        top: rect.bottom + window.scrollY + 4,
-        left: rect.left + window.scrollX,
-        width: rect.width,
-      });
+  // Mettre à jour la position quand le dropdown s'ouvre (comme dans Dropdown)
+  useEffect(() => {
+    if (showSuggestions) {
+      setPositionCalculated(false);
+      calculatePosition();
+    } else {
+      setPositionCalculated(false);
     }
-  };
+  }, [showSuggestions]);
 
   // Rechercher des suggestions quand l'input change
   useEffect(() => {
@@ -81,29 +91,15 @@ export function TagInput({
       searchTags(inputValue);
       setShowSuggestions(true);
       setSelectedIndex(-1);
+      setHasLoadedPopularTags(false); // Reset flag when typing
     } else {
       clearSuggestions();
-      setShowSuggestions(false);
+      // Only hide suggestions if we haven't just loaded popular tags
+      if (!hasLoadedPopularTags) {
+        setShowSuggestions(false);
+      }
     }
-  }, [inputValue, searchTags, clearSuggestions]);
-
-  // Mettre à jour la position du dropdown quand nécessaire
-  useEffect(() => {
-    if (showSuggestions) {
-      updateDropdownPosition();
-
-      const handleResize = () => updateDropdownPosition();
-      const handleScroll = () => updateDropdownPosition();
-
-      window.addEventListener('resize', handleResize);
-      window.addEventListener('scroll', handleScroll, true);
-
-      return () => {
-        window.removeEventListener('resize', handleResize);
-        window.removeEventListener('scroll', handleScroll, true);
-      };
-    }
-  }, [showSuggestions]);
+  }, [inputValue, searchTags, clearSuggestions, hasLoadedPopularTags]);
 
   const addTag = (tagName: string) => {
     const trimmedTag = tagName.trim();
@@ -170,23 +166,13 @@ export function TagInput({
     addTag(tag.name);
   };
 
-  const handleBlur = (e: React.FocusEvent) => {
-    // Délai pour permettre le clic sur une suggestion
-    setTimeout(() => {
-      if (!suggestionsRef.current?.contains(e.relatedTarget as Node)) {
-        setShowSuggestions(false);
-        setSelectedIndex(-1);
-      }
-    }, 150);
-  };
-
   const handleFocus = () => {
-    updateDropdownPosition();
     if (inputValue.trim()) {
       // Si il y a du texte, afficher les suggestions existantes
       setShowSuggestions(true);
     } else {
       // Si l'input est vide, charger les tags populaires
+      setHasLoadedPopularTags(true);
       loadPopularTags(20);
       setShowSuggestions(true);
     }
@@ -252,7 +238,6 @@ export function TagInput({
               value={inputValue}
               onChange={(e) => setInputValue(e.target.value)}
               onKeyDown={handleKeyDown}
-              onBlur={handleBlur}
               onFocus={handleFocus}
               placeholder={tags.length === 0 ? placeholder : ''}
               className="flex-1 min-w-[120px] bg-transparent border-none outline-none text-[var(--foreground)] placeholder-[var(--muted-foreground)] text-sm"
@@ -261,64 +246,61 @@ export function TagInput({
         </div>
       </div>
 
-      {/* Suggestions dropdown rendu via portail pour éviter les problèmes de z-index */}
+      {/* Suggestions dropdown */}
       {showSuggestions &&
         (suggestions.length > 0 || loading) &&
+        positionCalculated &&
         typeof window !== 'undefined' &&
         createPortal(
           <div
             ref={suggestionsRef}
-            className="fixed z-[9999] max-h-64 overflow-y-auto rounded-xl border border-[var(--border)]/60 bg-[var(--card)]/80 backdrop-blur-xl shadow-2xl shadow-[var(--card-shadow-medium)] relative"
+            className="fixed z-[99999] max-h-64 overflow-y-auto rounded-xl border border-[var(--border)]/60 bg-[var(--card)]/80 backdrop-blur-xl shadow-2xl shadow-[var(--card-shadow-medium)]"
             style={{
-              top: dropdownPosition.top,
-              left: dropdownPosition.left,
-              width: dropdownPosition.width,
+              top: `${dropdownPosition.top}px`,
+              left: `${dropdownPosition.left}px`,
             }}
           >
-            <div className="absolute inset-0 rounded-xl bg-gradient-to-br from-[color-mix(in_srgb,var(--primary)_12%,transparent)] via-[color-mix(in_srgb,var(--primary)_6%,transparent)] to-transparent opacity-90 pointer-events-none" />
-            <div className="relative z-10">
-              {loading ? (
-                <div className="p-3 text-center text-[var(--muted-foreground)] text-sm">
-                  Recherche...
-                </div>
-              ) : (
-                <div
-                  className={`gap-2 p-3 ${compactSuggestions ? 'grid grid-cols-1' : 'grid grid-cols-2 sm:grid-cols-3 lg:grid-cols-4'}`}
-                >
-                  {suggestions.map((tag, index) => (
-                    <button
-                      key={tag.id}
-                      type="button"
-                      onClick={() => handleSuggestionClick(tag)}
-                      className={`flex items-center gap-2 px-2 py-1.5 text-xs rounded-md transition-colors border ${
-                        index === selectedIndex
-                          ? 'bg-[var(--primary)]/15 text-[var(--primary)] ring-1 ring-[var(--primary)]/40 border-[var(--primary)]/40 backdrop-blur-sm'
-                          : 'text-[var(--foreground)] border-transparent hover:bg-[var(--card)]/40 hover:border-[var(--border)]/40 backdrop-blur-sm'
-                      } ${tags.includes(tag.name) ? 'opacity-50 cursor-not-allowed' : ''}`}
-                      disabled={tags.includes(tag.name)}
-                      title={
-                        tags.includes(tag.name)
-                          ? 'Déjà ajouté'
-                          : `Ajouter ${tag.name}`
-                      }
-                    >
-                      <div
-                        className="w-2 h-2 rounded-full flex-shrink-0"
-                        style={{ backgroundColor: tag.color }}
-                      />
-                      <span className="truncate text-[var(--foreground)]">
-                        {tag.name}
+            {loading ? (
+              <div className="p-3 text-center text-[var(--muted-foreground)] text-sm">
+                Recherche...
+              </div>
+            ) : (
+              <div
+                className={`gap-2 p-3 ${compactSuggestions ? 'grid grid-cols-1' : 'grid grid-cols-2 sm:grid-cols-3 lg:grid-cols-4'}`}
+              >
+                {suggestions.map((tag, index) => (
+                  <button
+                    key={tag.id}
+                    type="button"
+                    onClick={() => handleSuggestionClick(tag)}
+                    className={`flex items-center gap-2 px-2 py-1.5 text-xs rounded-md transition-colors border ${
+                      index === selectedIndex
+                        ? 'bg-[var(--primary)]/15 text-[var(--primary)] ring-1 ring-[var(--primary)]/40 border-[var(--primary)]/40 backdrop-blur-sm'
+                        : 'text-[var(--foreground)] border-transparent hover:bg-[var(--card)]/40 hover:border-[var(--border)]/40 backdrop-blur-sm'
+                    } ${tags.includes(tag.name) ? 'opacity-50 cursor-not-allowed' : ''}`}
+                    disabled={tags.includes(tag.name)}
+                    title={
+                      tags.includes(tag.name)
+                        ? 'Déjà ajouté'
+                        : `Ajouter ${tag.name}`
+                    }
+                  >
+                    <div
+                      className="w-2 h-2 rounded-full flex-shrink-0"
+                      style={{ backgroundColor: tag.color }}
+                    />
+                    <span className="truncate text-[var(--foreground)]">
+                      {tag.name}
+                    </span>
+                    {tags.includes(tag.name) && (
+                      <span className="text-[var(--muted-foreground)] ml-auto">
+                        ✓
                       </span>
-                      {tags.includes(tag.name) && (
-                        <span className="text-[var(--muted-foreground)] ml-auto">
-                          ✓
-                        </span>
-                      )}
-                    </button>
-                  ))}
-                </div>
-              )}
-            </div>
+                    )}
+                  </button>
+                ))}
+              </div>
+            )}
           </div>,
           document.body
         )}