Create a new sales registry app with identity verification features

Initial commit of the React application with UI components, form, camera, and indexedDB integration for sale data management.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 91318273-c764-4fd4-be04-bdc12c38af32
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/02867739-9ff7-4441-aca2-12e0153376c5.jpg

client/src/hooks/useCamera.tsx

@@ -0,0 +1,102 @@
+import { useState, useRef, useCallback } from 'react';
+import { PhotoType } from '@/types/sale';
+
+export function useCamera() {
+  const [isOpen, setIsOpen] = useState(false);
+  const [currentPhotoType, setCurrentPhotoType] = useState<PhotoType | null>(null);
+  const [isCapturing, setIsCapturing] = useState(false);
+  
+  const videoRef = useRef<HTMLVideoElement>(null);
+  const canvasRef = useRef<HTMLCanvasElement>(null);
+  const streamRef = useRef<MediaStream | null>(null);
+
+  const startCamera = useCallback(async (photoType: PhotoType) => {
+    try {
+      const stream = await navigator.mediaDevices.getUserMedia({
+        video: { facingMode: 'environment' }
+      });
+      
+      streamRef.current = stream;
+      setCurrentPhotoType(photoType);
+      setIsOpen(true);
+      
+      if (videoRef.current) {
+        videoRef.current.srcObject = stream;
+      }
+      
+      return true;
+    } catch (error) {
+      console.error('Camera error:', error);
+      throw new Error('Impossible d\'accéder à la caméra');
+    }
+  }, []);
+
+  const capturePhoto = useCallback((): Promise<string> => {
+    return new Promise((resolve, reject) => {
+      if (!videoRef.current || !canvasRef.current) {
+        reject(new Error('Video or canvas not available'));
+        return;
+      }
+
+      setIsCapturing(true);
+      
+      const video = videoRef.current;
+      const canvas = canvasRef.current;
+      const context = canvas.getContext('2d');
+      
+      if (!context) {
+        reject(new Error('Canvas context not available'));
+        return;
+      }
+
+      canvas.width = video.videoWidth;
+      canvas.height = video.videoHeight;
+      
+      context.drawImage(video, 0, 0);
+      
+      canvas.toBlob(
+        (blob) => {
+          if (!blob) {
+            reject(new Error('Failed to create image blob'));
+            return;
+          }
+          
+          const reader = new FileReader();
+          reader.onload = (e) => {
+            setIsCapturing(false);
+            resolve(e.target?.result as string);
+          };
+          reader.onerror = () => {
+            setIsCapturing(false);
+            reject(new Error('Failed to read image'));
+          };
+          reader.readAsDataURL(blob);
+        },
+        'image/jpeg',
+        0.8
+      );
+    });
+  }, []);
+
+  const stopCamera = useCallback(() => {
+    if (streamRef.current) {
+      streamRef.current.getTracks().forEach(track => track.stop());
+      streamRef.current = null;
+    }
+    
+    setIsOpen(false);
+    setCurrentPhotoType(null);
+    setIsCapturing(false);
+  }, []);
+
+  return {
+    isOpen,
+    currentPhotoType,
+    isCapturing,
+    videoRef,
+    canvasRef,
+    startCamera,
+    capturePhoto,
+    stopCamera
+  };
+}