Interface de recherche dynamique basée sur Elasticsearch avec génération de rapports automatisés

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              "fieldType": "number",
              "fieldLabel": "Minimum Amount ($)"
            },
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              "fieldOptions": {
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                    "option": "Last 1 Hour"
                  },
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                    "option": "Last 6 Hours"
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                    "option": "Last 24 Hours"
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                  {
                    "option": "Last 3 Days"
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              "fieldLabel": "Customer ID (Optional)"
            },
            {
              "fieldType": "dropdown",
              "fieldLabel": "Report Format",
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                  {
                    "option": "Text Report"
                  },
                  {
                    "option": "CSV Export"
                  }
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              "requiredField": true
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        "responseMode": "responseNode",
        "formDescription": "Search for suspicious transactions in your banking database"
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      "name": "Construire la requête de recherche",
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        "jsCode": "// Process form input and build Elasticsearch query\nconst formData = $input.first().json;\n\n// Extract form values\nconst minAmount = formData['Minimum Amount ($)'] || 1000;\nconst timeRange = formData['Time Range'] || 'Last 24 Hours';\nconst customerId = formData['Customer ID (Optional)']?.trim() || null;\nconst reportFormat = formData['Report Format'] || 'Text Report';\n\n// Convert time range to Elasticsearch format\nlet timeRangeES;\nswitch(timeRange) {\n  case 'Last 1 Hour':\n    timeRangeES = 'now-1h';\n    break;\n  case 'Last 6 Hours':\n    timeRangeES = 'now-6h';\n    break;\n  case 'Last 24 Hours':\n    timeRangeES = 'now-24h';\n    break;\n  case 'Last 3 Days':\n    timeRangeES = 'now-3d';\n    break;\n  default:\n    timeRangeES = 'now-24h';\n}\n\n// Build Elasticsearch query\nconst mustConditions = [\n  {\n    \"range\": {\n      \"timestamp\": {\n        \"gte\": timeRangeES\n      }\n    }\n  },\n  {\n    \"range\": {\n      \"amount\": {\n        \"gte\": minAmount\n      }\n    }\n  }\n];\n\n// Add customer filter if provided\nif (customerId) {\n  mustConditions.push({\n    \"term\": {\n      \"customer_id.keyword\": customerId\n    }\n  });\n}\n\nconst esQuery = {\n  \"query\": {\n    \"bool\": {\n      \"must\": mustConditions\n    }\n  },\n  \"sort\": [{ \"timestamp\": { \"order\": \"desc\" } }],\n  \"size\": 100\n};\n\nreturn {\n  elasticsearchQuery: esQuery,\n  searchParams: {\n    minAmount,\n    timeRange,\n    customerId,\n    reportFormat\n  }\n};"
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      "name": "Rechercher dans Elasticsearch",
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      "parameters": {
        "url": "https://localhost:9220/bank_transactions/_search",
        "options": {
          "allowUnauthorizedCerts": true
        },
        "jsonBody": "={{ $json.elasticsearchQuery }}",
        "sendBody": true,
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        "authentication": "genericCredentialType",
        "genericAuthType": "httpBasicAuth"
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      "typeVersion": 4.1
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    {
      "id": "4869c996-8a2e-40a1-aea3-384e0e379c14",
      "name": "Formater le rapport",
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        "jsCode": "// Get data from previous nodes\nconst esResponse = $input.first().json;\nconst searchParams = $('Build Search Query').first().json.searchParams;\n\n// Extract results\nconst hits = esResponse.hits?.hits || [];\nconst totalFound = esResponse.hits?.total?.value || 0;\n\n// Generate filename\nconst timestamp = new Date().toISOString().split('T')[0];\nconst isCSV = searchParams.reportFormat === 'CSV Export';\nconst filename = `report_${timestamp}.${isCSV ? 'csv' : 'txt'}`;\nconst mimeType = isCSV ? 'text/csv' : 'text/plain';\n\n// Generate report content\nlet reportContent = '';\n\nif (isCSV) {\n  // CSV format\n  reportContent = 'Transaction_ID,Customer_ID,Amount,Merchant_Category,Timestamp\\n';\n  hits.forEach(hit => {\n    const t = hit._source || {};\n    reportContent += `\"${t.transaction_id || ''}\",\"${t.customer_id || ''}\",${t.amount || 0},\"${t.merchant_category || ''}\",\"${t.timestamp || ''}\"\\n`;\n  });\n} else {\n  // Text format\n  reportContent = `DYNAMIC SEARCH REPORT\\n`;\n  reportContent += `======================\\n\\n`;\n  reportContent += `Search Criteria:\\n`;\n  reportContent += `- Minimum Amount: $${searchParams.minAmount}\\n`;\n  reportContent += `- Time Range: ${searchParams.timeRange}\\n`;\n  reportContent += `- Customer: ${searchParams.customerId || 'All'}\\n\\n`;\n  reportContent += `Results: ${totalFound} transactions found\\n\\n`;\n  \n  if (hits.length > 0) {\n    reportContent += `TRANSACTIONS:\\n`;\n    reportContent += `=============\\n\\n`;\n    hits.forEach((hit, index) => {\n      const t = hit._source || {};\n      reportContent += `${index + 1}. Transaction ID: ${t.transaction_id}\\n`;\n      reportContent += `   Customer: ${t.customer_id}\\n`;\n      reportContent += `   Amount: $${t.amount}\\n`;\n      reportContent += `   Merchant: ${t.merchant_category}\\n`;\n      reportContent += `   Time: ${t.timestamp}\\n\\n`;\n    });\n  } else {\n    reportContent += `No suspicious transactions found matching your criteria.\\n`;\n  }\n}\n\n// Convert content to binary data\nconst binaryData = Buffer.from(reportContent, 'utf8');\n\nreturn {\n  json: {\n    filename: filename,\n    mimeType: mimeType,\n    content: reportContent\n  },\n  binary: {\n    data: binaryData\n  }\n};"
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        "content": "## 🎯 ENTRY POINT\nUser fills out dynamic search form with:\n- Minimum transaction amount\n- Time range (1hr to 3 days)\n- Optional customer ID filter\n- Output format (Text/CSV)\n\n💡 TIP: Form auto-validates required fields!"
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        "content": "## 🔧 QUERY BUILDER\nTransforms user input into Elasticsearch query:\n\n✅ Converts time ranges:\n   \"Last 24 Hours\" → \"now-24h\"\n   \"Last 3 Days\" → \"now-3d\"\n\n✅ Builds filters:\n   • Amount >= minimum\n   • Timestamp within range\n   • Customer ID (if provided)\n\n📊 Output: Ready-to-use ES query + metadata"
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      "parameters": {
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        "width": 320,
        "height": 260,
        "content": "## 🎯 DATA HUNTER\nSearches bank_transactions index for suspicious activity\n\n🔧 Configuration:\n   • POST to localhost:9220\n   • Uses HTTP Basic Auth\n   • Sends JSON query from previous node\n   • Returns max 100 results, newest first\n\n⚠️ Note: Requires valid ES credentials!"
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      "parameters": {
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        "width": 340,
        "height": 340,
        "content": "## 📝 REPORT GENERATOR\nTransforms raw ES data into user-friendly reports\n\n🎨 Creates two formats:\n   📄 TEXT: Human-readable summary\n   📊 CSV: Spreadsheet-ready data export\n\n✨ Features:\n   • Auto-generates timestamped filename\n   • Converts text to binary for file writing\n   • Includes search criteria summary\n   • Lists all suspicious transactions\n\n🔄 Output: Content + Binary data ready for file save"
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      "parameters": {
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        "content": "## 📁 FILE SAVER\nWrites the report to server disk\n\n📍 Location: /tmp/report_YYYY-MM-DD.{txt|csv}\n🔧 Uses binary data from Format Report node\n✅ File ready for download or further processing\n\n🎯 Perfect for:\n   • Audit trails\n   • Batch processing\n   • Compliance reporting"
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      "parameters": {
        "color": 6,
        "width": 720,
        "height": 200,
        "content": "## 🎯 DYNAMIC SEARCH PIPELINE\n\nUser Form → Query Builder → ES Search → Report Format → File Save\n\n⏱️ Typical execution: 2-5 seconds\n📊 Handles up to 100 suspicious transactions\n🔒 Secure: Uses authenticated ES connection\n📁 Output: Timestamped report files in /tmp/"
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