File size: 43,347 Bytes
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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>ContraGit App</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        .diff-add {
            background-color: #dcfce7;
            color: #16a34a;
            padding: 0 2px;
            border-radius: 2px;
            display: inline;
        }
        .diff-del {
            background-color: #fee2e2;
            color: #dc2626;
            text-decoration: line-through;
            padding: 0 2px;
            border-radius: 2px;
            display: inline;
        }
        .diff-neutral {
            color: #4b5563;
            display: inline;
        }
        pre {
            white-space: pre-wrap;
            word-wrap: break-word;
        }
        .contract-content {
            max-height: 200px;
            overflow-y: auto;
        }
        .version-card {
            transition: all 0.2s ease;
        }
        .version-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .comment-bubble {
            position: relative;
            background: #f3f4f6;
            border-radius: 0.5rem;
        }
        .comment-bubble:after {
            content: '';
            position: absolute;
            top: -10px;
            left: 15px;
            border-width: 0 10px 10px;
            border-style: solid;
            border-color: #f3f4f6 transparent;
        }
    </style>
</head>
<body class="min-h-screen bg-gray-100 font-sans">
    <div id="app">
        <!-- Header -->
        <header class="bg-white shadow-sm">
            <nav class="container mx-auto px-4 sm:px-6 lg:px-8 py-3 flex items-center justify-between">
                <h1 class="text-2xl font-bold text-blue-600 cursor-pointer" onclick="goBackToDashboard()">
                    <i class="fas fa-file-contract mr-2"></i>ContraGit App
                </h1>
                <div class="flex items-center space-x-4">
                    <button id="newContractBtn" class="hidden md:flex items-center bg-blue-600 text-white px-4 py-2 rounded-lg hover:bg-blue-700 transition duration-200 shadow">
                        <i class="fas fa-plus mr-2"></i> New Contract
                    </button>
                    <div class="relative">
                        <img src="https://randomuser.me/api/portraits/men/32.jpg" alt="User" class="w-8 h-8 rounded-full cursor-pointer" id="userMenuBtn">
                        <div id="userMenu" class="hidden absolute right-0 mt-2 w-48 bg-white rounded-md shadow-lg py-1 z-10">
                            <a href="#" class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">Profile</a>
                            <a href="#" class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">Settings</a>
                            <a href="#" class="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">Logout</a>
                        </div>
                    </div>
                </div>
            </nav>
        </header>

        <!-- Main Content -->
        <main class="container mx-auto px-4 sm:px-6 lg:px-8 py-8">
            <div id="dashboardView">
                <!-- Dashboard content will be loaded here -->
            </div>
        </main>

        <!-- Footer -->
        <footer class="bg-gray-200 text-center py-4 mt-12">
            <p class="text-sm text-gray-600">&copy; 2025 ContraGit App</p>
        </footer>
    </div>

    <script>
        // Mock Data
        const MOCK_CONTRACTS = [
            {
                id: 1,
                name: "Freelance Agreement - Alex & Client X",
                createdAt: "2023-10-01T10:00:00Z",
                updatedAt: "2023-10-01T11:00:00Z",
            },
            {
                id: 2,
                name: "NDA - Project Phoenix",
                createdAt: "2023-09-15T14:30:00Z",
                updatedAt: "2023-09-15T14:30:00Z",
            },
        ];

        const MOCK_VERSIONS = {
            1: [
                { id: 1, contractId: 1, content: "Payment: $500 due on completion.\nDeadline: October 30th.", createdAt: "2023-10-01T10:00:00Z", createdBy: "Alex" },
                { id: 2, contractId: 1, content: "Payment: $600 due in two installments: $300 on start, $300 on completion.\nDeadline: October 30th.", createdAt: "2023-10-01T11:00:00Z", createdBy: "Alex" },
                { id: 3, contractId: 1, content: "Payment: $600 due in two installments: $300 on start, $300 on completion.\nDeadline: November 5th.", createdAt: "2023-10-01T12:15:00Z", createdBy: "Jamie" },
            ],
            2: [
                { id: 4, contractId: 2, content: "Standard Non-Disclosure Agreement terms apply.", createdAt: "2023-09-15T14:30:00Z", createdBy: "System" },
            ],
        };

        const MOCK_COMMENTS = {
            2: [
                { id: 1, versionId: 2, userId: "Jamie", comment: "I agree with the new payment terms but need to clarify the deadline.", createdAt: "2023-10-01T12:00:00Z" },
            ],
            3: [
                { id: 2, versionId: 3, userId: "Alex", comment: "Deadline updated to Nov 5th. Please confirm.", createdAt: "2023-10-01T12:20:00Z" },
            ]
        };

        // State
        let currentView = 'dashboard';
        let selectedContractId = null;
        let compareVersionIds = { v1: null, v2: null };
        let contracts = [];
        let versions = {};
        let comments = {};
        let loading = true;
        let error = null;

        // Utility Functions
        function formatDate(isoString) {
            if (!isoString) return 'N/A';
            try {
                const date = new Date(isoString);
                return date.toLocaleString('en-US', {
                    month: 'short',
                    day: 'numeric',
                    year: 'numeric',
                    hour: '2-digit',
                    minute: '2-digit'
                });
            } catch (e) {
                return 'Invalid Date';
            }
        }

        function calculateDiff(text1, text2) {
            // This is a simplified diff algorithm - in a real app, use a proper diff library
            const lines1 = text1.split('\n');
            const lines2 = text2.split('\n');
            const maxLength = Math.max(lines1.length, lines2.length);
            let result = [];

            for (let i = 0; i < maxLength; i++) {
                const line1 = lines1[i] || '';
                const line2 = lines2[i] || '';

                if (line1 === line2) {
                    result.push({
                        value: line1,
                        added: false,
                        removed: false
                    });
                } else {
                    if (line1) {
                        result.push({
                            value: line1,
                            added: false,
                            removed: true
                        });
                    }
                    if (line2) {
                        result.push({
                            value: line2,
                            added: true,
                            removed: false
                        });
                    }
                }
            }

            return result;
        }

        // Navigation Functions
        function viewContract(id) {
            selectedContractId = id;
            currentView = 'contract';
            renderView();
        }

        function goBackToDashboard() {
            selectedContractId = null;
            currentView = 'dashboard';
            renderView();
        }

        function goBackToContract() {
            if (selectedContractId) {
                currentView = 'contract';
            } else {
                goBackToDashboard();
            }
            renderView();
        }

        function goToAddVersion() {
            currentView = 'addVersion';
            renderView();
        }

        function goToCompareVersions(v1Id = null, v2Id = null) {
            const contractVersions = versions[selectedContractId] || [];
            const defaultV1 = v1Id ?? (contractVersions.length > 1 ? contractVersions[contractVersions.length - 2].id : null);
            const defaultV2 = v2Id ?? (contractVersions.length > 0 ? contractVersions[contractVersions.length - 1].id : null);
            compareVersionIds = { v1: defaultV1, v2: defaultV2 };
            currentView = 'compare';
            renderView();
        }

        function goToNewContract() {
            currentView = 'newContract';
            renderView();
        }

        // Data Manipulation Functions
        function handleAddContract(name) {
            const newId = Math.max(0, ...contracts.map(c => c.id)) + 1;
            const newContract = {
                id: newId,
                name: name,
                createdAt: new Date().toISOString(),
                updatedAt: new Date().toISOString(),
            };
            contracts = [...contracts, newContract];
            versions = { ...versions, [newId]: [] };
            
            const initialVersion = {
                id: Math.max(0, ...Object.values(versions).flat().map(v => v.id)) + 1,
                contractId: newId,
                content: `Initial content for ${name}. Please edit.`,
                createdAt: new Date().toISOString(),
                createdBy: "System",
            };
            versions = { ...versions, [newId]: [initialVersion] };
            
            alert(`Contract '${name}' created successfully.`);
            viewContract(newId);
        }

        function handleAddVersion(contractId, content, createdBy) {
            if (!versions[contractId]) {
                alert("Error: Contract not found.");
                return;
            }
            
            const newVersionId = Math.max(0, ...Object.values(versions).flat().map(v => v.id)) + 1;
            const newVersion = {
                id: newVersionId,
                contractId: contractId,
                content: content,
                createdAt: new Date().toISOString(),
                createdBy: createdBy || "Unknown User",
            };
            
            versions = {
                ...versions,
                [contractId]: [...versions[contractId], newVersion],
            };
            
            contracts = contracts.map(c => 
                c.id === contractId ? { ...c, updatedAt: new Date().toISOString() } : c
            );
            
            alert(`Version ${versions[contractId].length} added successfully.`);
            goBackToContract();
        }

        function handleAddComment(versionId, comment, userId) {
            const newCommentId = Math.max(0, ...Object.values(comments).flat().map(c => c.id)) + 1;
            const newComment = {
                id: newCommentId,
                versionId: versionId,
                userId: userId || "Guest",
                comment: comment,
                createdAt: new Date().toISOString(),
            };
            
            comments = {
                ...comments,
                [versionId]: [...(comments[versionId] || []), newComment],
            };
            
            renderView();
        }

        function handleFinalizeContract(contractId) {
            const contract = contracts.find(c => c.id === contractId);
            if (contract) {
                alert(`Contract '${contract.name}' finalized successfully.`);
            }
        }

        // View Components
        function renderDashboard() {
            return `
                <div>
                    <div class="flex justify-between items-center mb-6">
                        <h2 class="text-3xl font-bold text-gray-800">Contracts Dashboard</h2>
                        <button
                            onclick="goToNewContract()"
                            class="bg-blue-600 text-white px-4 py-2 rounded-lg hover:bg-blue-700 transition duration-200 shadow flex items-center"
                        >
                            <i class="fas fa-plus mr-2"></i> New Contract
                        </button>
                    </div>
                    
                    ${contracts.length === 0 ? `
                        <div class="bg-white p-8 rounded-lg shadow text-center">
                            <i class="fas fa-file-alt text-4xl text-gray-400 mb-4"></i>
                            <p class="text-gray-500 mb-4">No contracts found. Create one to get started!</p>
                            <button
                                onclick="goToNewContract()"
                                class="bg-blue-600 text-white px-4 py-2 rounded-lg hover:bg-blue-700 transition duration-200 shadow"
                            >
                                Create First Contract
                            </button>
                        </div>
                    ` : `
                        <div class="bg-white shadow overflow-hidden sm:rounded-md">
                            <ul class="divide-y divide-gray-200">
                                ${contracts.map(contract => `
                                    <li key="${contract.id}" class="version-card">
                                        <button
                                            onclick="viewContract(${contract.id})"
                                            class="block hover:bg-gray-50 w-full text-left px-4 py-4 sm:px-6 transition duration-150"
                                        >
                                            <div class="flex items-center justify-between">
                                                <p class="text-lg font-medium text-blue-600 truncate">
                                                    <i class="fas fa-file-contract mr-2"></i>${contract.name}
                                                </p>
                                                <div class="ml-2 flex-shrink-0 flex">
                                                    <p class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full bg-green-100 text-green-800">
                                                        Active
                                                    </p>
                                                </div>
                                            </div>
                                            <div class="mt-2 sm:flex sm:justify-between">
                                                <div class="sm:flex">
                                                    <p class="flex items-center text-sm text-gray-500">
                                                        <i class="fas fa-calendar-alt mr-2 text-gray-400"></i>
                                                        Created: ${formatDate(contract.createdAt)}
                                                    </p>
                                                    <p class="mt-2 flex items-center text-sm text-gray-500 sm:mt-0 sm:ml-6">
                                                        <i class="fas fa-clock mr-2 text-gray-400"></i>
                                                        Last Updated: ${formatDate(contract.updatedAt)}
                                                    </p>
                                                </div>
                                                <div class="mt-2 flex items-center text-sm text-gray-500 sm:mt-0">
                                                    <i class="fas fa-chevron-right text-gray-400"></i>
                                                </div>
                                            </div>
                                        </button>
                                    </li>
                                `).join('')}
                            </ul>
                        </div>
                    `}
                </div>
            `;
        }

        function renderNewContract() {
            return `
                <div class="bg-white p-6 rounded-lg shadow-md max-w-lg mx-auto">
                    <h2 class="text-2xl font-bold text-gray-800 mb-6">Create New Contract</h2>
                    <form onsubmit="event.preventDefault(); handleAddContract(document.getElementById('contractName').value);">
                        <div class="mb-4">
                            <label for="contractName" class="block text-sm font-medium text-gray-700 mb-1">
                                Contract Name
                            </label>
                            <input
                                type="text"
                                id="contractName"
                                class="w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                                placeholder="e.g., Freelance Agreement - Alex & Client X"
                                required
                            >
                        </div>
                        
                        <div class="mb-6">
                            <label for="contractFile" class="block text-sm font-medium text-gray-700 mb-1">
                                Upload Initial Document (Optional)
                            </label>
                            <div class="mt-1 flex justify-center px-6 pt-5 pb-6 border-2 border-gray-300 border-dashed rounded-md">
                                <div class="space-y-1 text-center">
                                    <i class="fas fa-file-upload text-4xl text-gray-400 mx-auto"></i>
                                    <div class="flex text-sm text-gray-600 justify-center">
                                        <label class="relative cursor-pointer bg-white rounded-md font-medium text-blue-600 hover:text-blue-500">
                                            <span>Upload a file</span>
                                            <input id="contractFile" name="contractFile" type="file" class="sr-only">
                                        </label>
                                        <p class="pl-1">or drag and drop</p>
                                    </div>
                                    <p class="text-xs text-gray-500">PDF, DOC, DOCX, TXT up to 10MB</p>
                                </div>
                            </div>
                        </div>
                        
                        <div class="flex justify-end space-x-3">
                            <button
                                type="button"
                                onclick="goBackToDashboard()"
                                class="bg-gray-200 text-gray-700 px-4 py-2 rounded-lg hover:bg-gray-300 transition duration-200"
                            >
                                Cancel
                            </button>
                            <button
                                type="submit"
                                class="bg-blue-600 text-white px-4 py-2 rounded-lg hover:bg-blue-700 transition duration-200 shadow"
                            >
                                Create Contract
                            </button>
                        </div>
                    </form>
                </div>
            `;
        }

        function renderContractDetail() {
            const contract = contracts.find(c => c.id === selectedContractId);
            if (!contract) {
                return `
                    <div class="bg-white p-6 rounded-lg shadow text-center">
                        <i class="fas fa-exclamation-triangle text-4xl text-yellow-500 mb-4"></i>
                        <p class="text-gray-700 mb-4">Contract not found.</p>
                        <button onclick="goBackToDashboard()" class="text-blue-600 hover:underline">
                            <i class="fas fa-arrow-left mr-2"></i>Go Back to Dashboard
                        </button>
                    </div>
                `;
            }

            const contractVersions = versions[selectedContractId] || [];

            return `
                <div>
                    <button onclick="goBackToDashboard()" class="mb-6 text-blue-600 hover:underline flex items-center">
                        <i class="fas fa-arrow-left mr-2"></i> Back to Dashboard
                    </button>
                    
                    <div class="flex justify-between items-start mb-6">
                        <div>
                            <h2 class="text-3xl font-bold text-gray-800 mb-1">${contract.name}</h2>
                            <p class="text-sm text-gray-500">
                                <i class="fas fa-clock mr-1"></i> Last Updated: ${formatDate(contract.updatedAt)}
                            </p>
                        </div>
                        <div class="flex space-x-2">
                            <button
                                onclick="handleFinalizeContract(${contract.id})"
                                class="bg-red-600 text-white px-3 py-1 rounded-lg hover:bg-red-700 transition duration-200 shadow text-sm"
                                title="Finalize Contract"
                            >
                                <i class="fas fa-lock mr-1"></i> Finalize
                            </button>
                        </div>
                    </div>
                    
                    <div class="flex flex-wrap gap-3 mb-6">
                        <button
                            onclick="goToAddVersion()"
                            class="bg-green-600 text-white px-4 py-2 rounded-lg hover:bg-green-700 transition duration-200 shadow flex items-center"
                        >
                            <i class="fas fa-plus mr-2"></i> Add New Version
                        </button>
                        <button
                            onclick="goToCompareVersions()"
                            disabled="${contractVersions.length < 2}"
                            class="${contractVersions.length < 2 ? 'opacity-50 cursor-not-allowed' : ''} bg-yellow-500 text-white px-4 py-2 rounded-lg hover:bg-yellow-600 transition duration-200 shadow flex items-center"
                        >
                            <i class="fas fa-code-compare mr-2"></i> Compare Versions
                        </button>
                    </div>
                    
                    <h3 class="text-2xl font-semibold text-gray-700 mb-4 flex items-center">
                        <i class="fas fa-history mr-2"></i> Version History
                    </h3>
                    
                    ${contractVersions.length === 0 ? `
                        <div class="bg-white p-6 rounded-lg shadow text-center">
                            <i class="fas fa-file-alt text-4xl text-gray-400 mb-4"></i>
                            <p class="text-gray-500">No versions yet. Add the first version to get started!</p>
                        </div>
                    ` : `
                        <div class="space-y-4">
                            ${contractVersions.slice().reverse().map((version, index) => {
                                const versionNumber = contractVersions.length - index;
                                const versionComments = comments[version.id] || [];
                                const isCommenting = localStorage.getItem('commentingVersionId') === String(version.id);
                                
                                return `
                                    <div class="bg-white p-4 rounded-lg shadow border border-gray-200 version-card">
                                        <div class="flex justify-between items-center mb-3">
                                            <h4 class="text-lg font-semibold flex items-center">
                                                <i class="fas fa-code-branch mr-2 text-blue-500"></i> Version ${versionNumber}
                                            </h4>
                                            <span class="text-sm text-gray-500">
                                                By ${version.createdBy} at ${formatDate(version.createdAt)}
                                            </span>
                                        </div>
                                        
                                        <div class="contract-content bg-gray-50 p-3 rounded mb-3">
                                            <pre class="text-sm text-gray-700 whitespace-pre-wrap font-mono">${version.content}</pre>
                                        </div>
                                        
                                        <div class="mt-3 pt-3 border-t border-gray-200">
                                            <h5 class="text-sm font-semibold text-gray-600 mb-2 flex items-center">
                                                <i class="fas fa-comments mr-2"></i> Comments (${versionComments.length})
                                            </h5>
                                            
                                            ${versionComments.length > 0 ? `
                                                <ul class="space-y-2 mb-3">
                                                    ${versionComments.map(comment => `
                                                        <li class="comment-bubble p-3">
                                                            <div class="flex justify-between items-start">
                                                                <span class="font-semibold text-sm">${comment.userId}:</span>
                                                                <span class="text-xs text-gray-400">${formatDate(comment.createdAt)}</span>
                                                            </div>
                                                            <p class="text-sm mt-1">${comment.comment}</p>
                                                        </li>
                                                    `).join('')}
                                                </ul>
                                            ` : ''}
                                            
                                            ${isCommenting ? `
                                                <form onsubmit="event.preventDefault(); handleAddComment(${version.id}, document.getElementById('comment-${version.id}').value, 'Alex'); localStorage.removeItem('commentingVersionId');">
                                                    <textarea
                                                        id="comment-${version.id}"
                                                        rows="2"
                                                        placeholder="Add a comment to Version ${versionNumber}..."
                                                        class="w-full p-2 border border-gray-300 rounded-md text-sm focus:outline-none focus:ring-1 focus:ring-blue-500"
                                                        required
                                                    ></textarea>
                                                    <div class="flex justify-end space-x-2 mt-1">
                                                        <button type="button" onclick="localStorage.removeItem('commentingVersionId'); renderView();" class="text-xs text-gray-500 hover:underline">Cancel</button>
                                                        <button type="submit" class="bg-blue-500 text-white px-2 py-1 rounded text-xs hover:bg-blue-600">Post</button>
                                                    </div>
                                                </form>
                                            ` : `
                                                <button onclick="localStorage.setItem('commentingVersionId', '${version.id}'); renderView();" class="text-xs text-blue-600 hover:underline flex items-center">
                                                    <i class="fas fa-plus mr-1"></i> Add Comment
                                                </button>
                                            `}
                                        </div>
                                    </div>
                                `;
                            }).join('')}
                        </div>
                    `}
                </div>
            `;
        }

        function renderAddVersion() {
            const baseVersion = versions[selectedContractId]?.[versions[selectedContractId].length - 1];
            
            return `
                <div class="bg-white p-6 rounded-lg shadow-md max-w-3xl mx-auto">
                    <button onclick="goBackToContract()" class="mb-4 text-sm text-blue-600 hover:underline flex items-center">
                        <i class="fas fa-arrow-left mr-1"></i> Cancel and Back to Contract
                    </button>
                    
                    <h2 class="text-2xl font-bold text-gray-800 mb-4">Add New Version</h2>
                    <p class="text-sm text-gray-500 mb-4">
                        <i class="fas fa-info-circle mr-1"></i> Editing based on ${baseVersion ? `Version ID ${baseVersion.id}` : 'N/A'}
                    </p>
                    
                    <form onsubmit="event.preventDefault(); handleAddVersion(${selectedContractId}, document.getElementById('versionContent').value, document.getElementById('createdBy').value);">
                        <div class="mb-4">
                            <label for="versionContent" class="block text-sm font-medium text-gray-700 mb-1">
                                Contract Content
                            </label>
                            <textarea
                                id="versionContent"
                                rows="15"
                                class="w-full p-3 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500 font-mono text-sm"
                                placeholder="Enter contract text here..."
                                required
                            >${baseVersion?.content || ''}</textarea>
                        </div>
                        
                        <div class="mb-6">
                            <label for="createdBy" class="block text-sm font-medium text-gray-700 mb-1">
                                Your Name (Editor)
                            </label>
                            <input
                                type="text"
                                id="createdBy"
                                value="Alex"
                                class="w-full sm:w-1/2 px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                                required
                            >
                        </div>
                        
                        <div class="flex justify-end space-x-3">
                            <button
                                type="button"
                                onclick="goBackToContract()"
                                class="bg-gray-200 text-gray-700 px-4 py-2 rounded-lg hover:bg-gray-300 transition duration-200"
                            >
                                Cancel
                            </button>
                            <button
                                type="submit"
                                class="bg-green-600 text-white px-4 py-2 rounded-lg hover:bg-green-700 transition duration-200 shadow"
                            >
                                <i class="fas fa-save mr-2"></i> Save New Version
                            </button>
                        </div>
                    </form>
                </div>
            `;
        }

        function renderCompareVersions() {
            const contractVersions = versions[selectedContractId] || [];
            const version1 = contractVersions.find(v => v.id === parseInt(compareVersionIds.v1));
            const version2 = contractVersions.find(v => v.id === parseInt(compareVersionIds.v2));
            
            const diffResult = version1 && version2 ? calculateDiff(version1.content, version2.content) : [];
            
            return `
                <div>
                    <button onclick="goBackToContract()" class="mb-6 text-blue-600 hover:underline flex items-center">
                        <i class="fas fa-arrow-left mr-2"></i> Back to Contract
                    </button>
                    
                    <h2 class="text-3xl font-bold text-gray-800 mb-6 flex items-center">
                        <i class="fas fa-code-compare mr-3"></i> Compare Versions
                    </h2>
                    
                    ${contractVersions.length < 2 ? `
                        <div class="bg-white p-6 rounded-lg shadow text-center">
                            <i class="fas fa-exclamation-circle text-4xl text-yellow-500 mb-4"></i>
                            <p class="text-gray-700 mb-4">You need at least two versions to compare.</p>
                            <button onclick="goToAddVersion()" class="bg-blue-600 text-white px-4 py-2 rounded-lg hover:bg-blue-700 transition duration-200 shadow">
                                <i class="fas fa-plus mr-2"></i> Add Version
                            </button>
                        </div>
                    ` : `
                        <div class="flex space-x-4 mb-6 bg-white p-4 rounded-lg shadow border border-gray-200 items-center">
                            <div class="flex-1">
                                <label class="block text-sm font-medium text-gray-700 mb-1">Compare Version:</label>
                                <select
                                    onchange="compareVersionIds.v1 = this.value; renderView();"
                                    class="w-full p-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                                    value="${compareVersionIds.v1 || ''}"
                                >
                                    <option value="" disabled>Select Version</option>
                                    ${contractVersions.map((v, index) => `
                                        <option value="${v.id}" ${v.id === parseInt(compareVersionIds.v1) ? 'selected' : ''}>
                                            Version ${index + 1} (${formatDate(v.createdAt)})
                                        </option>
                                    `).join('')}
                                </select>
                            </div>
                            <span class="mt-6 text-gray-500">
                                <i class="fas fa-arrows-left-right"></i>
                            </span>
                            <div class="flex-1">
                                <label class="block text-sm font-medium text-gray-700 mb-1">With Version:</label>
                                <select
                                    onchange="compareVersionIds.v2 = this.value; renderView();"
                                    class="w-full p-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500"
                                    value="${compareVersionIds.v2 || ''}"
                                >
                                    <option value="" disabled>Select Version</option>
                                    ${contractVersions.map((v, index) => `
                                        <option value="${v.id}" ${v.id === parseInt(compareVersionIds.v2) ? 'selected' : ''}>
                                            Version ${index + 1} (${formatDate(v.createdAt)})
                                        </option>
                                    `).join('')}
                                </select>
                            </div>
                        </div>
                        
                        ${(version1 && version2) ? `
                            <div class="grid grid-cols-1 md:grid-cols-2 gap-4 font-mono text-sm bg-white rounded p-4 shadow border border-gray-300">
                                <div>
                                    <h4 class="font-semibold mb-2 border-b pb-1">
                                        Version ${contractVersions.findIndex(v => v.id === version1.id) + 1}
                                        <span class="text-xs font-normal text-gray-500 ml-2">
                                            (${formatDate(version1.createdAt)} by ${version1.createdBy})
                                        </span>
                                    </h4>
                                    <pre class="whitespace-pre-wrap contract-content">${version1.content}</pre>
                                </div>
                                <div>
                                    <h4 class="font-semibold mb-2 border-b pb-1">
                                        Version ${contractVersions.findIndex(v => v.id === version2.id) + 1}
                                        <span class="text-xs font-normal text-gray-500 ml-2">
                                            (${formatDate(version2.createdAt)} by ${version2.createdBy})
                                        </span>
                                    </h4>
                                    <pre class="whitespace-pre-wrap contract-content">${version2.content}</pre>
                                </div>
                            </div>
                            
                            <div class="mt-8 bg-white p-4 rounded shadow border font-mono text-sm">
                                <h4 class="font-semibold mb-2 border-b pb-1">Changes Summary</h4>
                                <div class="whitespace-pre-wrap">
                                    ${diffResult.map(part => {
                                        if (part.added) {
                                            return `<span class="diff-add">${part.value}</span>`;
                                        } else if (part.removed) {
                                            return `<span class="diff-del">${part.value}</span>`;
                                        } else {
                                            return `<span class="diff-neutral">${part.value}</span>`;
                                        }
                                    }).join('')}
                                </div>
                            </div>
                        ` : `
                            <div class="bg-white p-6 rounded-lg shadow text-center">
                                <i class="fas fa-info-circle text-4xl text-blue-500 mb-4"></i>
                                <p class="text-gray-700">Please select two versions to compare.</p>
                            </div>
                        `}
                    `}
                </div>
            `;
        }

        // Main Render Function
        function renderView() {
            let viewContent = '';
            
            if (loading) {
                viewContent = `
                    <div class="text-center p-10">
                        <i class="fas fa-spinner fa-spin text-4xl text-blue-500 mb-4"></i>
                        <p>Loading...</p>
                    </div>
                `;
            } else if (error) {
                viewContent = `
                    <div class="text-center p-10 text-red-600">
                        <i class="fas fa-exclamation-triangle text-4xl mb-4"></i>
                        <p>${error}</p>
                    </div>
                `;
            } else {
                switch (currentView) {
                    case 'contract':
                        viewContent = renderContractDetail();
                        break;
                    case 'compare':
                        viewContent = renderCompareVersions();
                        break;
                    case 'addVersion':
                        viewContent = renderAddVersion();
                        break;
                    case 'newContract':
                        viewContent = renderNewContract();
                        break;
                    case 'dashboard':
                    default:
                        viewContent = renderDashboard();
                }
            }
            
            document.getElementById('dashboardView').innerHTML = viewContent;
            
            // Update active button in header
            document.getElementById('newContractBtn').classList.toggle('hidden', currentView !== 'dashboard');
        }

        // Initialize App
        function initApp() {
            // Simulate API Fetch
            loading = true;
            setTimeout(() => {
                try {
                    contracts = MOCK_CONTRACTS;
                    versions = MOCK_VERSIONS;
                    comments = MOCK_COMMENTS;
                    loading = false;
                    renderView();
                } catch (err) {
                    error = "Failed to load data.";
                    loading = false;
                    console.error(err);
                    renderView();
                }
            }, 500);
            
            // Setup event listeners
            document.getElementById('userMenuBtn').addEventListener('click', function() {
                document.getElementById('userMenu').classList.toggle('hidden');
            });
            
            document.getElementById('newContractBtn').addEventListener('click', goToNewContract);
            
            // Close user menu when clicking outside
            document.addEventListener('click', function(event) {
                if (!event.target.closest('#userMenu') && !event.target.closest('#userMenuBtn')) {
                    document.getElementById('userMenu').classList.add('hidden');
                }
            });
        }

        // Start the app when DOM is loaded
        document.addEventListener('DOMContentLoaded', initApp);
    </script>
<p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=manideepreddym/contractverse" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
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