feat: add AI OCR processing state and conditional UI locking for maintenance records

src/app/admin/maintenance/[id]/page.tsx

@@ -282,6 +282,12 @@ export default function MaintenanceDetailPage() {
   const [showCompleteModal, setShowCompleteModal] = useState(false);
   const [showPaymentModal, setShowPaymentModal] = useState(false);
   const [showInvoiceModal, setShowInvoiceModal] = useState(false);
+
+  // AI OCR Simulation States
+  const [isOcrProcessing, setIsOcrProcessing] = useState(false);
+  const [ocrComplete, setOcrComplete] = useState(false);
+  const [ocrFileName, setOcrFileName] = useState('');
+  const [ocrStep, setOcrStep] = useState('');
   const [showAddNoteModal, setShowAddNoteModal] = useState(false);
   const [showAddPartModal, setShowAddPartModal] = useState(false);
   const [partSearch, setPartSearch] = useState('');
@@ -473,7 +479,13 @@ export default function MaintenanceDetailPage() {
               </div>
               <p className="text-slate-500 mt-1">{typeLabels[record.type]} • {record.date}</p>
             </div>
-            <div className="flex flex-wrap gap-2">
+            <div className="flex flex-wrap items-center gap-2 relative">
+              {ocrComplete && (
+                <div className="flex items-center gap-1.5 px-3 py-1.5 bg-emerald-500/10 border border-emerald-500/20 text-emerald-600 text-xs font-bold rounded-lg mr-2 animate-fadeIn">
+                  <CheckCircle className="w-3.5 h-3.5 text-emerald-500" /> Invoice Locked (OCR Synced)
+                </div>
+              )}
+              <div className={`flex flex-wrap gap-2 ${ocrComplete ? 'filter blur-[1.5px] opacity-50 pointer-events-none' : ''}`}>
                 {editMode ? (
                   <>
                     <button onClick={handleSaveEdit} className="px-4 py-2 bg-green-600 text-white rounded-lg text-sm hover:bg-green-700 flex items-center gap-2">
@@ -547,6 +559,7 @@ export default function MaintenanceDetailPage() {
               </div>
             </div>
           </div>
+        </div>
 
         <div className="p-6 grid grid-cols-1 lg:grid-cols-2 gap-6">
           <div className="space-y-4">
@@ -617,7 +630,15 @@ export default function MaintenanceDetailPage() {
               )}
             </div>
 
-            <div className="bg-orange-50 p-4 rounded-xl border border-orange-100">
+            <div className="bg-orange-50 p-4 rounded-xl border border-orange-100 relative overflow-hidden transition-all duration-300">
+              {ocrComplete && (
+                <div className="absolute inset-0 bg-slate-900/5 backdrop-blur-[1px] flex items-center justify-center z-10 p-2">
+                  <span className="px-3 py-1 bg-slate-900 text-white border border-slate-700 text-[10px] font-bold rounded-lg uppercase tracking-wider flex items-center gap-1.5 shadow-md">
+                    <CheckCircle className="w-3.5 h-3.5 text-emerald-400" /> Populated via AI OCR
+                  </span>
+                </div>
+              )}
+              <div className={ocrComplete ? 'filter blur-[1.5px] opacity-60 pointer-events-none' : ''}>
                 <h3 className="font-semibold text-orange-800 mb-3 flex items-center gap-2">
                   <History className="w-5 h-5" /> Issue History
                 </h3>
@@ -646,7 +667,7 @@ export default function MaintenanceDetailPage() {
                       <ArrowRight className="w-4 h-4 text-orange-400" />
                     </Link>
                   )}
-
+                </div>
               </div>
             </div>
 
@@ -724,14 +745,175 @@ export default function MaintenanceDetailPage() {
                 </>
               )}
             </div>
-
+            <div className="bg-slate-50 p-4 rounded-xl border border-slate-100">
+              <h3 className="font-semibold text-slate-800 mb-3 flex items-center gap-2">
+                <MessageSquare className="w-5 h-5" /> Notes ({(editMode ? editForm.notes : record.notes)?.length})
+              </h3>
+              {editMode && (
+                <div className="flex gap-2 mb-3">
+                  <input
+                    type="text"
+                    id="newNoteInput"
+                    placeholder="Add a note..."
+                    className="flex-1 px-3 py-2 border border-slate-200 rounded-lg text-sm"
+                    onKeyPress={(e) => {
+                      if (e.key === 'Enter') {
+                        const input = e.currentTarget as HTMLInputElement;
+                        if (input.value.trim()) {
+                          setEditForm({ ...editForm, notes: [...(editForm.notes || []), input.value.trim()] });
+                          input.value = '';
+                        }
+                      }
+                    }}
+                  />
+                  <button
+                    onClick={() => {
+                      const input = document.getElementById('newNoteInput') as HTMLInputElement;
+                      if (input?.value.trim()) {
+                        setEditForm({ ...editForm, notes: [...(editForm.notes || []), input.value.trim()] });
+                        input.value = '';
+                      }
+                    }}
+                    className="px-4 py-2 bg-accent text-white rounded-lg text-sm"
+                  >
+                    Add
+                  </button>
+                </div>
+              )}
+              <div className="space-y-2">
+                {(editMode ? editForm.notes : record.notes)?.map((note, idx) => (
+                  <div key={idx} className="text-sm text-slate-600 p-2 bg-white rounded-lg">
+                    • {note}
+                  </div>
+                ))}
+                {(editMode ? editForm.notes : record.notes)?.length === 0 && (
+                  <p className="text-sm text-slate-400">No notes yet</p>
+                )}
+              </div>
+            </div>
 
           </div>
 
           <div className="space-y-4">
 
 
-            <div className="bg-purple-50 p-4 rounded-xl border border-purple-100">
+            {/* Manual Invoice OCR Card */}
+            <div className="bg-indigo-50/70 p-4 rounded-xl border border-indigo-100 space-y-3 relative overflow-hidden transition-all duration-300">
+              <div className="flex items-center justify-between">
+                <h3 className="font-semibold text-indigo-800 text-sm flex items-center gap-2">
+                  <FileText className="w-5 h-5 text-indigo-600" /> Manual Invoice OCR Upload
+                </h3>
+                {ocrComplete && (
+                  <span className="px-2.5 py-0.5 bg-emerald-100 border border-emerald-200 text-emerald-800 text-[10px] font-bold rounded-full uppercase tracking-wider animate-pulse">
+                    OCR Synced
+                  </span>
+                )}
+              </div>
+
+              {!isOcrProcessing && !ocrComplete && (
+                <div className="border border-dashed border-indigo-300 hover:border-indigo-500 rounded-xl p-5 text-center cursor-pointer transition-all bg-white relative group hover:bg-indigo-50/50">
+                  <input
+                    type="file"
+                    accept="image/*,.pdf"
+                    className="absolute inset-0 opacity-0 cursor-pointer z-10"
+                    onChange={(e) => {
+                      const file = e.target.files?.[0];
+                      if (!file) return;
+                      setOcrFileName(file.name);
+                      setIsOcrProcessing(true);
+
+                      setOcrStep('1/3: Parsing document layout & digital signature...');
+                      setTimeout(() => {
+                        setOcrStep('2/3: Running AI layout analysis & line item extraction...');
+                        setTimeout(() => {
+                          setOcrStep('3/3: Auto-populating ledger items and actual costs...');
+                          setTimeout(() => {
+                            setIsOcrProcessing(false);
+                            setOcrComplete(true);
+                            // Populate parts dynamically with mock OCR data!
+                            setRecord(prev => {
+                              if (!prev) return null;
+                              return {
+                                ...prev,
+                                partsUsed: [
+                                  { id: 'PU-OCR-1', partId: 'PRT-001', partName: 'Front fender (OCR Extracted)', quantity: 1, unitPrice: 1500, totalPrice: 1500, addedAt: new Date().toISOString().split('T')[0] },
+                                  { id: 'PU-OCR-2', partId: 'PRT-003', partName: 'Mounting brackets (OCR Extracted)', quantity: 2, unitPrice: 800, totalPrice: 1600, addedAt: new Date().toISOString().split('T')[0] },
+                                  { id: 'PU-OCR-3', partId: 'PRT-004', partName: 'Brake pads (OCR Extracted)', quantity: 2, unitPrice: 600, totalPrice: 1200, addedAt: new Date().toISOString().split('T')[0] },
+                                ],
+                                serviceCost: 1800,
+                                actualCost: 6100, // 1500 + 1600 + 1200 + 1800
+                                notes: [...prev.notes, `OCR Scan Success: Extracted items from manual invoice "${file.name}".`]
+                              };
+                            });
+                          }, 1000);
+                        }, 1200);
+                      }, 1000);
+                    }}
+                  />
+                  <div className="flex flex-col items-center justify-center space-y-2">
+                    <div className="w-10 h-10 bg-indigo-100 rounded-full flex items-center justify-center text-indigo-600 group-hover:scale-110 transition-transform">
+                      <Plus className="w-5 h-5" />
+                    </div>
+                    <div>
+                      <p className="text-sm font-semibold text-slate-700">Upload manual invoice receipt</p>
+                      <p className="text-xs text-slate-500 mt-0.5">No file chosen</p>
+                      <p className="text-[10px] text-slate-400 mt-2 font-medium">Supports PDF, PNG, JPG (e.g. MNT-001-invoice.pdf)</p>
+                    </div>
+                  </div>
+                </div>
+              )}
+
+              {isOcrProcessing && (
+                <div className="p-4 bg-white border border-indigo-100 rounded-xl space-y-3">
+                  <div className="flex justify-between text-xs">
+                    <span className="text-indigo-800 font-semibold animate-pulse">Running JAIBEN AI OCR Engine...</span>
+                    <span className="text-indigo-600 font-bold">{ocrStep.split(':')[0]}</span>
+                  </div>
+                  <div className="w-full bg-slate-100 rounded-full h-1.5 overflow-hidden border border-slate-200">
+                    <div className="bg-gradient-to-r from-indigo-500 to-indigo-700 h-full w-2/3 animate-pulse rounded-full"></div>
+                  </div>
+                  <p className="text-[10px] text-slate-500 italic">{ocrStep}</p>
+                </div>
+              )}
+
+              {ocrComplete && (
+                <div className="p-4 bg-emerald-50 border border-emerald-100 rounded-xl space-y-2">
+                  <div className="flex items-center gap-2 text-emerald-800 text-xs font-bold">
+                    <CheckCircle className="w-4 h-4 text-emerald-600" />
+                    <span>OCR PARSING COMPLETE</span>
+                  </div>
+                  <div className="text-xs text-slate-600 space-y-1.5 bg-white p-3 rounded-lg border border-emerald-100">
+                    <p>📄 Document: <strong className="text-slate-800 font-semibold">{ocrFileName}</strong></p>
+                    <p>🔧 Extracted Parts: <strong className="text-slate-800 font-semibold">3 items</strong></p>
+                    <p>⚡ Labor Service Costs: <strong className="text-slate-800 font-semibold">৳1,800</strong></p>
+                    <p>💰 Auto Total Synced: <strong className="text-slate-800 font-semibold">৳6,100</strong></p>
+                  </div>
+                  <button
+                    onClick={() => {
+                      setOcrComplete(false);
+                      setOcrFileName('');
+                      const found = mockMaintenance.find(r => r.id === id);
+                      if (found) {
+                        setRecord(found);
+                      }
+                    }}
+                    className="w-full py-1.5 mt-2 bg-slate-100 hover:bg-slate-200 text-slate-700 text-xs font-semibold rounded-lg transition-colors border border-slate-200 cursor-pointer"
+                  >
+                    Reset OCR Invoice Attachment
+                  </button>
+                </div>
+              )}
+            </div>
+
+            <div className="bg-purple-50 p-4 rounded-xl border border-purple-100 relative overflow-hidden transition-all duration-300">
+              {ocrComplete && (
+                <div className="absolute inset-0 bg-slate-900/5 backdrop-blur-[1px] flex items-center justify-center z-10 p-2">
+                  <span className="px-3 py-1 bg-slate-900 text-white border border-slate-700 text-[10px] font-bold rounded-lg uppercase tracking-wider flex items-center gap-1.5 shadow-md">
+                    <CheckCircle className="w-3.5 h-3.5 text-emerald-400" /> Populated via AI OCR
+                  </span>
+                </div>
+              )}
+              <div className={ocrComplete ? 'filter blur-[1.5px] opacity-60 pointer-events-none' : ''}>
                 <h3 className="font-semibold text-purple-800 mb-3 flex items-center gap-2">
                   <DollarSign className="w-5 h-5" /> Cost Details
                 </h3>
@@ -783,6 +965,7 @@ export default function MaintenanceDetailPage() {
                   </div>
                 </div>
               </div>
+            </div>
 
             <div className="bg-cyan-50 p-4 rounded-xl border border-cyan-100">
               <h3 className="font-semibold text-cyan-800 mb-3 flex items-center gap-2">
@@ -807,7 +990,15 @@ export default function MaintenanceDetailPage() {
               )}
             </div>
 
-            <div className="bg-orange-50 p-4 rounded-xl border border-orange-100">
+            <div className="bg-orange-50 p-4 rounded-xl border border-orange-100 relative overflow-hidden transition-all duration-300">
+              {ocrComplete && (
+                <div className="absolute inset-0 bg-slate-900/5 backdrop-blur-[1px] flex items-center justify-center z-10 p-2">
+                  <span className="px-3 py-1 bg-slate-900 text-white border border-slate-700 text-[10px] font-bold rounded-lg uppercase tracking-wider flex items-center gap-1.5 shadow-md">
+                    <CheckCircle className="w-3.5 h-3.5 text-emerald-400" /> Populated via AI OCR
+                  </span>
+                </div>
+              )}
+              <div className={ocrComplete ? 'filter blur-[1.5px] opacity-60 pointer-events-none' : ''}>
                 <div className="flex items-center justify-between mb-3">
                   <h3 className="font-semibold text-orange-800 flex items-center gap-2">
                     <Wrench className="w-5 h-5" /> Parts Used
@@ -938,57 +1129,11 @@ export default function MaintenanceDetailPage() {
                     </div>
                   )}
                 </div>
+              </div>
+            </div>
 
 
           </div>
-
-            <div className="bg-slate-50 p-4 rounded-xl border border-slate-100">
-              <h3 className="font-semibold text-slate-800 mb-3 flex items-center gap-2">
-                <MessageSquare className="w-5 h-5" /> Notes ({(editMode ? editForm.notes : record.notes)?.length})
-              </h3>
-              {editMode && (
-                <div className="flex gap-2 mb-3">
-                  <input
-                    type="text"
-                    id="newNoteInput"
-                    placeholder="Add a note..."
-                    className="flex-1 px-3 py-2 border border-slate-200 rounded-lg text-sm"
-                    onKeyPress={(e) => {
-                      if (e.key === 'Enter') {
-                        const input = e.currentTarget as HTMLInputElement;
-                        if (input.value.trim()) {
-                          setEditForm({ ...editForm, notes: [...(editForm.notes || []), input.value.trim()] });
-                          input.value = '';
-                        }
-                      }
-                    }}
-                  />
-                  <button
-                    onClick={() => {
-                      const input = document.getElementById('newNoteInput') as HTMLInputElement;
-                      if (input?.value.trim()) {
-                        setEditForm({ ...editForm, notes: [...(editForm.notes || []), input.value.trim()] });
-                        input.value = '';
-                      }
-                    }}
-                    className="px-4 py-2 bg-accent text-white rounded-lg text-sm"
-                  >
-                    Add
-                  </button>
-                </div>
-              )}
-              <div className="space-y-2">
-                {(editMode ? editForm.notes : record.notes)?.map((note, idx) => (
-                  <div key={idx} className="text-sm text-slate-600 p-2 bg-white rounded-lg">
-                    • {note}
-                  </div>
-                ))}
-                {(editMode ? editForm.notes : record.notes)?.length === 0 && (
-                  <p className="text-sm text-slate-400">No notes yet</p>
-                )}
-              </div>
-            </div>
-          </div>
         </div>
       </div>