Add document verification page

src/front/Components/Layouts/Folder/DocumentVerification/classes.module.scss

@@ -0,0 +1,171 @@
+@import "@Themes/constants.scss";
+
+.root {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-2xl, 40px);
+	max-width: 800px;
+	margin: 0 auto;
+	padding: var(--spacing-xl, 32px);
+
+	.header {
+		display: flex;
+		flex-direction: column;
+		gap: var(--spacing-md, 16px);
+		text-align: center;
+	}
+
+	.content {
+		display: flex;
+		flex-direction: column;
+		gap: var(--spacing-2xl, 40px);
+
+		.drag-drop-container {
+			display: flex;
+			flex-direction: column;
+			gap: var(--spacing-xl, 32px);
+
+			@media (min-width: $screen-m) {
+				flex-direction: row;
+				gap: var(--spacing-lg, 24px);
+			}
+
+			.drag-drop-box {
+				flex: 1;
+				min-height: 200px;
+				display: flex;
+				flex-direction: column;
+				gap: var(--spacing-sm, 8px);
+				
+				// Force the DragAndDrop component to take full width and height
+				> div {
+					width: 100% !important;
+					height: 100% !important;
+					min-height: 200px !important;
+					display: flex !important;
+					flex-direction: column !important;
+					
+					// Override the fit-content width from DragAndDrop
+					&.root {
+						width: 100% !important;
+						height: 100% !important;
+						min-height: 200px !important;
+					}
+				}
+
+				.file-info {
+					padding: var(--spacing-sm, 8px) var(--spacing-md, 16px);
+					background-color: var(--color-success-50, #f0f9ff);
+					border: 1px solid var(--color-success-200, #bae6fd);
+					border-radius: var(--radius-md, 8px);
+					margin-top: var(--spacing-sm, 8px);
+				}
+			}
+		}
+
+		.warning {
+			text-align: center;
+			padding: var(--spacing-md, 16px);
+			background-color: var(--color-warning-50, #fffbeb);
+			border: 1px solid var(--color-warning-200, #fde68a);
+			border-radius: var(--radius-md, 8px);
+		}
+
+		.verification-result {
+			text-align: center;
+			padding: var(--spacing-lg, 24px);
+			border-radius: var(--radius-md, 8px);
+			border: 2px solid;
+			display: flex;
+			flex-direction: column;
+			gap: var(--spacing-md, 16px);
+
+			&.success {
+				background-color: var(--color-success-50, #f0fdf4);
+				border-color: var(--color-success-200, #bbf7d0);
+			}
+
+			&.error {
+				background-color: var(--color-error-50, #fef2f2);
+				border-color: var(--color-error-200, #fecaca);
+			}
+
+			.verification-details {
+				background-color: rgba(0, 0, 0, 0.05);
+				padding: var(--spacing-md, 16px);
+				border-radius: var(--radius-sm, 4px);
+				font-family: monospace;
+				white-space: pre-line;
+				text-align: left;
+				max-width: 100%;
+				overflow-x: auto;
+			}
+
+			.merkle-proof-section {
+				display: flex;
+				flex-direction: column;
+				align-items: center;
+				gap: var(--spacing-md, 16px);
+				padding: var(--spacing-lg, 24px);
+				background-color: rgba(0, 0, 0, 0.02);
+				border-radius: var(--radius-md, 8px);
+				border: 1px solid rgba(0, 0, 0, 0.1);
+			}
+		}
+
+		.qr-container {
+			display: flex;
+			flex-direction: column;
+			align-items: center;
+			gap: var(--spacing-sm, 8px);
+
+			.qr-code {
+				width: 150px;
+				height: 150px;
+				border: 2px solid var(--color-neutral-200, #e5e7eb);
+				border-radius: var(--radius-sm, 4px);
+				padding: var(--spacing-sm, 8px);
+				background-color: white;
+			}
+
+			.qr-description {
+				text-align: center;
+				max-width: 200px;
+			}
+		}
+
+		.qr-loading {
+			display: flex;
+			justify-content: center;
+			align-items: center;
+			width: 150px;
+			height: 150px;
+			border: 2px dashed var(--color-neutral-300, #d1d5db);
+			border-radius: var(--radius-sm, 4px);
+			background-color: var(--color-neutral-50, #f9fafb);
+		}
+
+		.qr-error {
+			display: flex;
+			justify-content: center;
+			align-items: center;
+			width: 150px;
+			height: 150px;
+			border: 2px solid var(--color-error-200, #fecaca);
+			border-radius: var(--radius-sm, 4px);
+			background-color: var(--color-error-50, #fef2f2);
+		}
+
+		.actions {
+			display: flex;
+			justify-content: space-between;
+			align-items: center;
+			gap: var(--spacing-lg, 24px);
+
+			@media (max-width: $screen-s) {
+				flex-direction: column;
+				gap: var(--spacing-md, 16px);
+			}
+		}
+	}
+} 

src/front/Components/Layouts/Folder/DocumentVerification/index.tsx

@@ -0,0 +1,260 @@
+import Button, { EButtonSize, EButtonstyletype, EButtonVariant } from "@Front/Components/DesignSystem/Button";
+import DragAndDrop from "@Front/Components/DesignSystem/DragAndDrop";
+import Typography, { ETypo, ETypoColor } from "@Front/Components/DesignSystem/Typography";
+import Module from "@Front/Config/Module";
+import PdfService from "@Front/Services/PdfService";
+import { FileBlob } from "@Front/Api/Entities/types";
+import { ShieldCheckIcon } from "@heroicons/react/24/outline";
+import { useRouter } from "next/router";
+import React, { useState } from "react";
+import MessageBus from "src/sdk/MessageBus";
+
+import classes from "./classes.module.scss";
+import DocumentService from "src/common/Api/LeCoffreApi/sdk/DocumentService";
+import FileService from "src/common/Api/LeCoffreApi/sdk/FileService";
+
+type IProps = {
+	folderUid: string;
+};
+
+/**
+ * Convert a File object to FileBlob
+ * @param file - The File object to convert
+ * @returns Promise<FileBlob> - The converted FileBlob
+ */
+const convertFileToFileBlob = async (file: File): Promise<FileBlob> => {
+	return new Promise((resolve, reject) => {
+		const reader = new FileReader();
+		reader.onload = () => {
+			const arrayBuffer = reader.result as ArrayBuffer;
+			const uint8Array = new Uint8Array(arrayBuffer);
+			resolve({
+				type: file.type,
+				data: uint8Array
+			});
+		};
+		reader.onerror = () => reject(new Error('Failed to read file'));
+		reader.readAsArrayBuffer(file);
+	});
+};
+
+
+
+export default function DocumentVerification(props: IProps) {
+	const { folderUid } = props;
+	const router = useRouter();
+	
+	const [documentToVerify, setDocumentToVerify] = useState<File | null>(null);
+	const [validationCertificate, setValidationCertificate] = useState<File | null>(null);
+	const [isVerifying, setIsVerifying] = useState(false);
+	const [verificationResult, setVerificationResult] = useState<{
+		success: boolean;
+		message: string;
+		details?: string;
+		merkleProof?: string;
+	} | null>(null);
+
+	const handleDocumentToVerifyChange = (files: File[]) => {
+		if (files.length > 0 && files[0]) {
+			setDocumentToVerify(files[0]);
+		} else {
+			setDocumentToVerify(null);
+		}
+	};
+
+	const handleValidationCertificateChange = (files: File[]) => {
+		if (files.length > 0 && files[0]) {
+			setValidationCertificate(files[0]);
+		} else {
+			setValidationCertificate(null);
+		}
+	};
+
+	const handleVerifyDocuments = async () => {
+		if (!documentToVerify || !validationCertificate) {
+			console.error("Both documents are required for verification");
+			return;
+		}
+
+		setIsVerifying(true);
+		setVerificationResult(null);
+
+		const messageBus = MessageBus.getInstance();
+		
+		try {
+			// Here the things we need to verify:
+			// - we can produce the same hash from the document provided than what is in the validation certificate
+			// - the merkle proof is valid with that hash
+			// - the root of the merkle tree is a state id from a commited state in the process
+			// - that process is a file process linked to the right folder
+			// Step 1: Parse the validation certificate
+			const validationData = await PdfService.getInstance().parseCertificate(validationCertificate);
+
+			// Step 2: Convert File to FileBlob and hash the document using MessageBus
+			const fileBlob = await convertFileToFileBlob(documentToVerify);
+
+			await messageBus.isReady();
+			const documentHash = await messageBus.hashDocument(fileBlob, validationData.commitmentId);	
+			
+			// Step 3: Compare hashes
+			const hashesMatch = documentHash.toLowerCase() === validationData.documentHash.toLowerCase();
+
+			if (!hashesMatch) {
+				throw new Error('Hash du document invalide, le document fourni n\'est pas celui qui a été certifié');
+			}
+
+			// Step 4: Verify the merkle proof
+			const merkleProof = validationData.merkleProof;
+			const merkleProofValid = await messageBus.verifyMerkleProof(merkleProof, documentHash);
+
+			if (!merkleProofValid) {
+				throw new Error('Preuve de Merkle invalide, le document n\'a pas été certifié là où le certificat le prétend');
+			}
+
+			// Step 5: Verify that this file process depends on the right folder process
+			// First pin all the validated documents related to the folder
+			const documentProcesses = await DocumentService.getDocuments();
+
+			const documents = documentProcesses.filter((process: any) => 
+				process.processData.document_status === "VALIDATED" && 
+				process.processData.folder.uid === folderUid
+			);
+
+			if (!documents || documents.length === 0) {
+				throw new Error(`Aucune demande de document trouvé pour le dossier ${folderUid}`);
+			}
+
+			// Step 6: verify that the merkle proof match the last commited state for the file process
+			const stateId = JSON.parse(validationData.merkleProof)['root'];
+
+			let stateIdExists = false;
+			for (const doc of documents) {
+				const processData = doc.processData;
+
+				for (const file of processData.files) {
+					const fileUid = file.uid;
+					const fileProcess = await FileService.getFileByUid(fileUid);	
+					const lastUpdatedStateId = fileProcess.lastUpdatedFileState.state_id;
+
+					stateIdExists = lastUpdatedStateId === stateId; // we assume that last state is the validated document, that seems reasonable
+					if (stateIdExists) break;
+				}
+
+				if (stateIdExists) break;
+			}
+
+			if (!stateIdExists) {
+				throw new Error('La preuve fournie ne correspond à aucun document demandé pour ce dossier.');
+			}	
+
+			setVerificationResult({
+				success: true,
+				message: "✅ Vérification réussie ! Le document est authentique et intègre.",
+			});	
+		} catch (error) {
+			console.error("Verification failed:", error);
+			setVerificationResult({
+				success: false,
+				message: `❌ Erreur lors de la vérification: ${error}`,
+			});
+		} finally {
+			setIsVerifying(false);
+		}
+	};
+
+	const handleBackToFolder = () => {
+		const folderPath = Module.getInstance()
+			.get()
+			.modules.pages.Folder.pages.FolderInformation.props.path.replace("[folderUid]", folderUid);
+		router.push(folderPath);
+	};
+
+	const bothDocumentsPresent = documentToVerify && validationCertificate;
+
+	return (
+		<div className={classes["root"]}>
+			<div className={classes["header"]}>
+				<Typography typo={ETypo.TITLE_H2} color={ETypoColor.TEXT_PRIMARY}>
+					Vérification de Documents
+				</Typography>
+				<Typography typo={ETypo.TEXT_LG_REGULAR} color={ETypoColor.TEXT_SECONDARY}>
+					Vérifiez l'intégrité et l'authenticité de vos documents
+				</Typography>
+			</div>
+
+			<div className={classes["content"]}>
+				<div className={classes["drag-drop-container"]}>
+					<div className={classes["drag-drop-box"]}>
+						<DragAndDrop
+							title="Document à valider"
+							description="Glissez-déposez ou cliquez pour sélectionner le document que vous souhaitez vérifier"
+							onChange={handleDocumentToVerifyChange}
+						/>
+						{documentToVerify && (
+							<div className={classes["file-info"]}>
+								<Typography typo={ETypo.TEXT_SM_REGULAR} color={ETypoColor.COLOR_SUCCESS_500}>
+									✓ {documentToVerify.name}
+								</Typography>
+							</div>
+						)}
+					</div>
+
+					<div className={classes["drag-drop-box"]}>
+						<DragAndDrop
+							title="Certificat de validation"
+							description="Glissez-déposez ou cliquez pour sélectionner le certificat de validation correspondant"
+							onChange={handleValidationCertificateChange}
+						/>
+						{validationCertificate && (
+							<div className={classes["file-info"]}>
+								<Typography typo={ETypo.TEXT_SM_REGULAR} color={ETypoColor.COLOR_SUCCESS_500}>
+									✓ {validationCertificate.name}
+								</Typography>
+							</div>
+						)}
+					</div>
+				</div>
+
+				{!bothDocumentsPresent && (
+					<div className={classes["warning"]}>
+						<Typography typo={ETypo.TEXT_MD_REGULAR} color={ETypoColor.COLOR_WARNING_500}>
+							⚠️ Veuillez sélectionner les deux documents pour procéder à la vérification
+						</Typography>
+					</div>
+				)}
+
+				{verificationResult && (
+					<div className={`${classes["verification-result"]} ${classes[verificationResult.success ? "success" : "error"]}`}>
+						<Typography typo={ETypo.TEXT_LG_REGULAR} color={verificationResult.success ? ETypoColor.COLOR_SUCCESS_500 : ETypoColor.COLOR_ERROR_500}>
+							{verificationResult.message}
+						</Typography>
+					</div>
+				)}
+
+				<div className={classes["actions"]}>
+					<Button
+						variant={EButtonVariant.SECONDARY}
+						styletype={EButtonstyletype.TEXT}
+						size={EButtonSize.LG}
+						onClick={handleBackToFolder}
+						disabled={isVerifying}
+					>
+						Retour au dossier
+					</Button>
+					
+					<Button
+						variant={EButtonVariant.PRIMARY}
+						styletype={EButtonstyletype.CONTAINED}
+						size={EButtonSize.LG}
+						onClick={handleVerifyDocuments}
+						rightIcon={<ShieldCheckIcon />}
+						disabled={!bothDocumentsPresent || isVerifying}
+						isLoading={isVerifying}
+					>
+						{isVerifying ? "Vérification en cours..." : "Vérifier les documents"}
+					</Button>
+				</div>
+			</div>
+		</div>
+	);
+} 

src/front/Components/Layouts/Folder/FolderInformation/InformationSection/index.tsx

@@ -5,11 +5,12 @@ import { IItem } from "@Front/Components/DesignSystem/Menu/MenuItem";
 import Tag, { ETagColor } from "@Front/Components/DesignSystem/Tag";
 import Typography, { ETypo, ETypoColor } from "@Front/Components/DesignSystem/Typography";
 import Module from "@Front/Config/Module";
-import { ArchiveBoxIcon, EllipsisHorizontalIcon, PaperAirplaneIcon, PencilSquareIcon, UsersIcon } from "@heroicons/react/24/outline";
+import { ArchiveBoxIcon, EllipsisHorizontalIcon, PaperAirplaneIcon, PencilSquareIcon, ShieldCheckIcon, UsersIcon } from "@heroicons/react/24/outline";
 import classNames from "classnames";
 import { OfficeFolder } from "le-coffre-resources/dist/Notary";
 import Link from "next/link";
 import { useMemo } from "react";
+import { useRouter } from "next/router";
 
 import { AnchorStatus } from "..";
 import classes from "./classes.module.scss";
@@ -24,6 +25,7 @@ type IProps = {
 
 export default function InformationSection(props: IProps) {
 	const { folder, progress, onArchive, anchorStatus, isArchived } = props;
+	const router = useRouter();
 
 	const menuItemsDekstop = useMemo(() => {
 		let elements: IItem[] = [];
@@ -43,6 +45,17 @@ export default function InformationSection(props: IProps) {
 			link: Module.getInstance()
 				.get()
 				.modules.pages.Folder.pages.EditInformations.props.path.replace("[folderUid]", folder?.uid ?? ""),
+			hasSeparator: true,
+		};
+		const verifyDocumentElement = {
+			icon: <ShieldCheckIcon />,
+			text: "Vérifier le document",
+			onClick: () => {
+				const verifyPath = Module.getInstance()
+					.get()
+					.modules.pages.Folder.pages.VerifyDocuments.props.path.replace("[folderUid]", folder?.uid ?? "");
+				router.push(verifyPath);
+			},
 			hasSeparator: false,
 		};
 
@@ -52,8 +65,11 @@ export default function InformationSection(props: IProps) {
 			elements.push(modifyInformationsElement);
 		}
 
+		// Add verify document option
+		elements.push(verifyDocumentElement);
+
 		return elements;
-	}, [anchorStatus, folder?.uid]);
+	}, [anchorStatus, folder?.uid, router]);
 
 	const menuItemsMobile = useMemo(() => {
 		let elements: IItem[] = [];
@@ -75,6 +91,17 @@ export default function InformationSection(props: IProps) {
 				.modules.pages.Folder.pages.EditInformations.props.path.replace("[folderUid]", folder?.uid ?? ""),
 			hasSeparator: true,
 		};
+		const verifyDocumentElement = {
+			icon: <ShieldCheckIcon />,
+			text: "Vérifier le document",
+			onClick: () => {
+				const verifyPath = Module.getInstance()
+					.get()
+					.modules.pages.Folder.pages.VerifyDocuments.props.path.replace("[folderUid]", folder?.uid ?? "");
+				router.push(verifyPath);
+			},
+			hasSeparator: true,
+		};
 
 		// If the folder is not anchored, we can modify the collaborators and the informations
 		if (anchorStatus === AnchorStatus.NOT_ANCHORED) {
@@ -82,6 +109,9 @@ export default function InformationSection(props: IProps) {
 			elements.push(modifyInformationsElement);
 		}
 
+		// Add verify document option
+		elements.push(verifyDocumentElement);
+
 		elements.push({
 			icon: <PaperAirplaneIcon />,
 			text: "Envoyer des documents",
@@ -101,7 +131,7 @@ export default function InformationSection(props: IProps) {
 		}
 
 		return elements;
-	}, [anchorStatus, folder?.uid, isArchived, onArchive]);
+	}, [anchorStatus, folder?.uid, isArchived, onArchive, router]);
 	return (
 		<section className={classes["root"]}>
 			<div className={classes["info-box1"]}>

src/front/Config/Module/development.json

@@ -160,6 +160,13 @@
 							"path": "/folders/select",
 							"labelKey": "select_folder"
 						}
+					},
+					"VerifyDocuments": {
+						"enabled": true,
+						"props": {
+							"path": "/folders/[folderUid]/verify-documents",
+							"labelKey": "verify_documents"
+						}
 					}
 				}
 			},

src/front/Config/Module/preprod.json

@@ -160,6 +160,13 @@
 							"path": "/folders/select",
 							"labelKey": "select_folder"
 						}
+					},
+					"VerifyDocuments": {
+						"enabled": true,
+						"props": {
+							"path": "/folders/[folderUid]/verify-documents",
+							"labelKey": "verify_documents"
+						}
 					}
 				}
 			},

src/front/Config/Module/production.json

@@ -160,6 +160,13 @@
 							"path": "/folders/select",
 							"labelKey": "select_folder"
 						}
+					},
+					"VerifyDocuments": {
+						"enabled": true,
+						"props": {
+							"path": "/folders/[folderUid]/verify-documents",
+							"labelKey": "verify_documents"
+						}
 					}
 				}
 			},

src/front/Config/Module/staging.json

@@ -160,6 +160,13 @@
 							"path": "/folders/select",
 							"labelKey": "select_folder"
 						}
+					},
+					"VerifyDocuments": {
+						"enabled": true,
+						"props": {
+							"path": "/folders/[folderUid]/verify-documents",
+							"labelKey": "verify_documents"
+						}
 					}
 				}
 			},

src/pages/folders/[folderUid]/verify-documents.tsx

@@ -0,0 +1,20 @@
+import { useRouter } from "next/router";
+import React from "react";
+
+import DefaultNotaryDashboard from "@Front/Components/LayoutTemplates/DefaultNotaryDashboard";
+import DocumentVerification from "@Front/Components/Layouts/Folder/DocumentVerification";
+
+export default function VerifyDocuments() {
+	const router = useRouter();
+	const { folderUid } = router.query;
+
+	if (!folderUid || Array.isArray(folderUid)) {
+		return null;
+	}
+
+	return (
+		<DefaultNotaryDashboard>
+			<DocumentVerification folderUid={folderUid} />
+		</DefaultNotaryDashboard>
+	);
+}