Add dropdown filters to Missing Data view with unique values

src/components/MissingDataView.tsx

@@ -1,6 +1,6 @@
 import React, { useState, useMemo } from 'react';
 import { ExcelRow, COLUMNS } from '../types';
-import { Search, ChevronDown, ChevronUp, X, Edit2, Save, Filter, XCircle } from 'lucide-react';
+import { Search, ChevronDown, ChevronUp, X, Edit2, Save, Filter, XCircle, ChevronLeft, ChevronRight } from 'lucide-react';
 import { cn } from '../lib/utils';
 
 interface MissingDataViewProps {
@@ -54,6 +54,7 @@ export function MissingDataView({ data, headers, onSaveRow, onCaptureState }: Mi
   const [editing, setEditing] = useState<EditingState | null>(null);
   const [columnFilters, setColumnFilters] = useState<Record<number, string>>({});
   const [showFilterMenu, setShowFilterMenu] = useState<number | null>(null);
+  const [filterSearch, setFilterSearch] = useState<Record<number, string>>({});
   const pageSize = 100;
 
   const launchDateCol = useMemo(() =>
@@ -64,6 +65,33 @@ export function MissingDataView({ data, headers, onSaveRow, onCaptureState }: Mi
   const launchHeader = launchDateCol >= 0 ? headers[launchDateCol] : 'Launch Date';
   const readyHeader = readyToOrderCol >= 0 ? headers[readyToOrderCol] : 'Ready to Order';
 
+  const columnUniqueValues = useMemo(() => {
+    const cols = columns.map(c => c.col);
+    const result: Record<number, Set<string>> = {};
+    cols.forEach(col => result[col] = new Set());
+    
+    data.forEach(row => {
+      cols.forEach(col => {
+        let val: any = row[col];
+        if (col === launchDateCol || col === readyToOrderCol) {
+          val = formatDateValue(val) || String(val ?? '');
+        } else {
+          val = String(val ?? '');
+        }
+        if (val) result[col].add(val);
+      });
+    });
+    return result;
+  }, [data, launchDateCol, readyToOrderCol]);
+
+  const getDisplayValues = (col: number) => {
+    const values = columnUniqueValues[col];
+    if (!values) return [];
+    const searchVal = filterSearch[col]?.toLowerCase() || '';
+    const arr = Array.from(values).sort();
+    return searchVal ? arr.filter(v => v.toLowerCase().includes(searchVal)) : arr;
+  };
+
   const filteredData = useMemo(() => {
     let result = data.map((row, index) => ({ row, index }));
 
@@ -214,7 +242,11 @@ export function MissingDataView({ data, headers, onSaveRow, onCaptureState }: Mi
           <table className="w-full text-left text-xs">
             <thead className="bg-slate-900/80 text-slate-400 sticky top-0 z-10">
               <tr>
-                {columns.map(({ col, label, width }) => (
+                {columns.map(({ col, label, width }) => {
+                  const isOpen = showFilterMenu === col;
+                  const hasFilter = columnFilters[col];
+                  const displayValues = getDisplayValues(col);
+                  return (
                   <th
                     key={col}
                     style={{ width, minWidth: width }}
@@ -230,32 +262,56 @@ export function MissingDataView({ data, headers, onSaveRow, onCaptureState }: Mi
                       )}
                     </div>
                     <div className="mt-1 relative">
+                      <button
+                        onClick={(e) => { e.stopPropagation(); setShowFilterMenu(isOpen ? null : col); }}
+                        className={cn(
+                          "w-full flex items-center justify-between px-1.5 py-0.5 bg-slate-800 border rounded text-[10px] transition-colors",
+                          hasFilter ? "border-indigo-500 text-white" : "border-slate-600 text-slate-400 hover:border-slate-500"
+                        )}
+                      >
+                        <span className="truncate">{hasFilter || 'Filter...'}</span>
+                        <ChevronDown className={cn("w-3 h-3 transition-transform", isOpen && "rotate-180")} />
+                      </button>
+                      {isOpen && (
+                        <div className="absolute top-full left-0 right-0 mt-1 bg-slate-800 border border-slate-600 rounded-md shadow-lg z-50 max-h-64 flex flex-col">
+                          <div className="p-1.5 border-b border-slate-700">
                             <input
                               type="text"
-                        placeholder="Filter..."
-                        value={columnFilters[col] || ''}
-                        onChange={(e) => {
-                          setColumnFilters(prev => ({ ...prev, [col]: e.target.value }));
-                          setPage(1);
-                        }}
+                              placeholder="Search..."
+                              value={filterSearch[col] || ''}
+                              onChange={(e) => setFilterSearch(prev => ({ ...prev, [col]: e.target.value }))}
                               onClick={(e) => e.stopPropagation()}
-                        className="w-full px-1.5 py-0.5 bg-slate-800 border border-slate-600 rounded text-[10px] text-white placeholder-slate-500 focus:outline-none focus:border-indigo-500"
+                              className="w-full px-2 py-1 bg-slate-900 border border-slate-700 rounded text-xs text-white placeholder-slate-500 focus:outline-none focus:border-indigo-500"
                             />
-                      {columnFilters[col] && (
+                          </div>
+                          <div className="flex-1 overflow-auto">
                             <button
-                          onClick={(e) => {
-                            e.stopPropagation();
-                            setColumnFilters(prev => { const n = { ...prev }; delete n[col]; return n; });
-                            setPage(1);
-                          }}
-                          className="absolute right-1 top-1/2 -translate-y-1/2 text-slate-500 hover:text-white"
+                              onClick={(e) => { e.stopPropagation(); setColumnFilters(prev => { const n = { ...prev }; delete n[col]; return n; }); setPage(1); }}
+                              className="w-full px-2 py-1.5 text-left text-xs text-slate-300 hover:bg-slate-700 hover:text-white"
                             >
-                          <XCircle className="w-3 h-3" />
+                              (All)
                             </button>
+                            {displayValues.map((val) => (
+                              <button
+                                key={val}
+                                onClick={(e) => { e.stopPropagation(); setColumnFilters(prev => ({ ...prev, [col]: val })); setShowFilterMenu(null); setPage(1); }}
+                                className={cn(
+                                  "w-full px-2 py-1.5 text-left text-xs hover:bg-slate-700 hover:text-white",
+                                  columnFilters[col] === val ? "text-indigo-400 bg-indigo-500/10" : "text-slate-300"
+                                )}
+                              >
+                                {val}
+                              </button>
+                            ))}
+                            {displayValues.length === 0 && (
+                              <div className="px-2 py-2 text-xs text-slate-500 text-center">No values</div>
+                            )}
+                          </div>
+                        </div>
                       )}
                     </div>
                   </th>
-                ))}
+                );})}
                 <th className="px-2 py-2 font-medium text-right" style={{ width: 60 }}></th>
               </tr>
             </thead>