{ "id": "[CENSORED]", "meta": { "instanceId": "workflow-06e6d19b", "versionId": "1.0.0", "createdAt": "2025-09-29T07:07:43.642905", "updatedAt": "2025-09-29T07:07:43.642919", "owner": "n8n-user", "license": "MIT", "category": "automation", "status": "active", "priority": "high", "environment": "production" }, "name": "(G) LineChatBot + Google Sheets (as a memory)", "tags": [ "automation", "n8n", "production-ready", "excellent", "optimized" ], "nodes": [ { "id": "[CENSORED]", "name": "Webhook", "type": "n8n-nodes-base.webhook", "position": [ 560, -500 ], "webhookId": "[CENSORED]", "parameters": { "path": "guitarpa", "options": {}, "httpMethod": "POST" }, "typeVersion": 2, "notes": "This webhook node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-1", "name": "AI Agent", "type": "n8n-nodes-base.noOp", "position": [ 460, -220 ], "parameters": { "text": "={{ $json.Prompt }}", "options": { "systemMessage": "=You are a helpful assistant. Your name is \"ลลิตา\". You will help me in everything I need. You will answer based on user language. You are an AI Agent operating in the Thailand time zone (Asia/Bangkok, UTC+7). Today is {{ $now }}." }, "promptType": "define", "hasOutputParser": true }, "typeVersion": 1.8, "notes": "This agent node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-2", "name": "Google Gemini Chat Model", "type": "n8n-nodes-base.noOp", "position": [ 460, -20 ], "parameters": { "options": {}, "modelName": "models/gemini-2.0-flash-001" }, "credentials": { "googlePalmApi": { "id": "[CENSORED]", "name": "Guitar's Gemini ([CENSORED_EMAIL])" } }, "typeVersion": 1, "notes": "This lmChatGoogleGemini node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-3", "name": "Edit Fields", "type": "n8n-nodes-base.set", "position": [ 780, -500 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "[CENSORED]", "name": "body.events[0].message.text", "type": "string", "value": "={{ $('Webhook').item.json.body.events[0].message.text }}" }, { "id": "[CENSORED]", "name": "body.events[0].replyToken", "type": "string", "value": "={{ $('Webhook').item.json.body.events[0].replyToken }}" }, { "id": "[CENSORED]", "name": "body.events[0].source.userId", "type": "string", "value": "={{ $json.body.events[0].source.userId }}" } ] } }, "typeVersion": 3.4, "notes": "This set node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-4", "name": "HTTP Request", "type": "n8n-nodes-base.httpRequest", "position": [ 1276, -220 ], "parameters": { "url": "{{ $env.API_BASE_URL }}", "method": "POST", "options": {}, "jsonBody": "={\n \"replyToken\": \"{{ $('Edit Fields').item.json.body.events[0].replyToken }}\",\n \"messages\": [\n {\n \"type\": \"text\",\n \"text\": \"{{ $('AI Agent').item.json.output.replaceAll('\\t', ' ').replaceAll('\\\"', '\\\\\\\"').replaceAll('\\n', '\\\\n').trim() || 'No response available.' }}\"\n }\n ]\n}", "sendBody": true, "sendHeaders": true, "specifyBody": "json", "headerParameters": { "parameters": [ { "name": "Authorization", "value": "Bearer [CENSORED]" }, { "name": "Content-Type", "value": "application/json" } ] } }, "typeVersion": 4.2, "notes": "This httpRequest node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-5", "name": "Get History", "type": "n8n-nodes-base.googleSheets", "position": [ 1000, -500 ], "parameters": { "options": { "outputFormatting": { "values": { "date": "FORMATTED_STRING", "general": "UNFORMATTED_VALUE" } }, "returnFirstMatch": true, "dataLocationOnSheet": { "values": { "rangeDefinition": "detectAutomatically" } } }, "filtersUI": { "values": [ { "lookupValue": "={{ $('Webhook').item.json.body.events[0].source.userId }}", "lookupColumn": "UserID " } ] }, "sheetName": { "__rl": true, "mode": "list", "value": "gid=0", "cachedResultUrl": "{{ $env.BASE_URL }}", "cachedResultName": "Sheet1" }, "documentId": { "__rl": true, "mode": "id", "value": "[CENSORED]" } }, "credentials": { "googleSheetsOAuth2Api": { "id": "[CENSORED]", "name": "[Guitar] Google Sheets ([CENSORED_EMAIL])" } }, "notesInFlow": false, "typeVersion": 4.5, "alwaysOutputData": true, "notes": "This googleSheets node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-6", "name": "Prepare Prompt", "type": "n8n-nodes-base.set", "position": [ 1220, -500 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "[CENSORED]", "name": "Prompt", "type": "string", "value": "={{\n \"คุณคือลลิตา แชทบอทภาษาไทยที่สุภาพและเป็นมิตร ตอบตามบริบทของการสนทนา:\\n\" +\n\n ($('Get History').item.json.History_Archive_1 || \"\") +\n (($('Get History').item.json.History_Archive_1) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History_Archive_2 || \"\") +\n (($('Get History').item.json.History_Archive_2) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History_Archive_3 || \"\") +\n (($('Get History').item.json.History_Archive_3) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History_Archive_4 || \"\") +\n (($('Get History').item.json.History_Archive_4) ? \"\\n\" : \"\") +\n\n ($('Get History').item.json.History || \"\") +\n (($('Get History').item.json.History) ? \"\\n\" : \"\") +\n\n \"ผู้ใช้: \" + $('Edit Fields').item.json.body.events[0].message.text + \"\\nลลิตา: \"\n}}\n" } ] } }, "typeVersion": 3.4, "notes": "This set node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-7", "name": "Save History", "type": "n8n-nodes-base.googleSheets", "position": [ 1056, -220 ], "parameters": { "columns": { "value": { "History": "={{ $('Split History').item.json.historyToSave }}", "UserID ": "={{ $('Edit Fields').item.json.body.events[0].source.userId }}", "LastUpdated": "={{ new Date().toISOString() }}", "History_Archive_1": "={{ $('Split History').item.json.historyArchive1 }}", "History_Archive_2": "={{ $('Split History').item.json.historyArchive2 }}", "History_Archive_3": "={{ $('Split History').item.json.historyArchive3 }}", "History_Archive_4": "={{ $('Split History').item.json.historyArchive4 }}" }, "schema": [ { "id": "UserID ", "type": "string", "display": true, "removed": false, "required": false, "displayName": "UserID ", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "History", "type": "string", "display": true, "required": false, "displayName": "History", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "LastUpdated", "type": "string", "display": true, "required": false, "displayName": "LastUpdated", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "History_Archive_1", "type": "string", "display": true, "removed": false, "required": false, "displayName": "History_Archive_1", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "History_Archive_2", "type": "string", "display": true, "removed": false, "required": false, "displayName": "History_Archive_2", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "History_Archive_3", "type": "string", "display": true, "removed": false, "required": false, "displayName": "History_Archive_3", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "History_Archive_4", "type": "string", "display": true, "removed": false, "required": false, "displayName": "History_Archive_4", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "row_number", "type": "string", "display": true, "removed": true, "readOnly": true, "required": false, "displayName": "row_number", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [ "UserID " ], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "appendOrUpdate", "sheetName": { "__rl": true, "mode": "list", "value": "gid=0", "cachedResultUrl": "{{ $env.BASE_URL }}", "cachedResultName": "Sheet1" }, "documentId": { "__rl": true, "mode": "id", "value": "[CENSORED]" } }, "credentials": { "googleSheetsOAuth2Api": { "id": "[CENSORED]", "name": "[Guitar] Google Sheets ([CENSORED_EMAIL])" } }, "typeVersion": 4.5, "notes": "This googleSheets node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-8", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ 460, -560 ], "parameters": { "content": "### Connect to Line Official Account's API" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-9", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ 740, -560 ], "parameters": { "width": 180, "content": "Prepare the data" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-10", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ 960, -560 ], "parameters": { "width": 180, "content": "Retrieve chat history" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-11", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ 1180, -560 ], "parameters": { "width": 180, "content": "Give our AI previous chat history" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-12", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 460, -280 ], "parameters": { "content": "Get input with this command. \"{{ $json.Prompt }}\"" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-13", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [ 780, -280 ], "parameters": { "width": 180, "content": "Split history into small chunks (data cleaning)" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-14", "name": "Split History", "type": "n8n-nodes-base.code", "position": [ 840, -220 ], "parameters": { "jsCode": "// Get the current history, new message, and response\nlet history = $('Get History').item.json.History || '';\nlet message = $('Edit Fields').item.json.body.events[0].message.text;\nlet response = $json.output;\nlet newExchange = `ผู้ใช้: ${message}\\nลลิตา: ${response}`;\nlet updatedHistory = history + (history ? '\\n' : '') + newExchange;\n\n// Threshold: 70% of Google Sheets cell limit (50,000 characters * 0.7 = 35,000)\nconst threshold = 35000;\nlet historyToSave = updatedHistory;\nlet archive1 = $('Get History').item.json.History_Archive_1 || '';\nlet archive2 = $('Get History').item.json.History_Archive_2 || '';\nlet archive3 = $('Get History').item.json.History_Archive_3 || '';\nlet archive4 = $('Get History').item.json.History_Archive_4 || '';\n\n// If history exceeds threshold, split it\nif (updatedHistory.length > threshold) {\n // Keep the last 17,500 characters in History (half of threshold for balance)\n const keepLength = 17500;\n const archiveChunk = updatedHistory.substring(0, updatedHistory.length - keepLength);\n historyToSave = updatedHistory.substring(updatedHistory.length - keepLength);\n\n // Distribute to archive cells, ensuring none exceed 35,000 characters\n if (archive1.length < threshold) {\n archive1 = (archive1 ? archive1 + '\\n' : '') + archiveChunk;\n if (archive1.length > threshold) {\n const excess = archive1.substring(threshold);\n archive1 = archive1.substring(0, threshold);\n if (archive2.length < threshold) {\n archive2 = (archive2 ? archive2 + '\\n' : '') + excess;\n }\n }\n }\n if (archive2.length < threshold && archive1.length >= threshold) {\n archive2 = (archive2 ? archive2 + '\\n' : '') + archiveChunk;\n if (archive2.length > threshold) {\n const excess = archive2.substring(threshold);\n archive2 = archive2.substring(0, threshold);\n if (archive3.length < threshold) {\n archive3 = (archive3 ? archive3 + '\\n' : '') + excess;\n }\n }\n }\n if (archive3.length < threshold && archive2.length >= threshold) {\n archive3 = (archive3 ? archive3 + '\\n' : '') + archiveChunk;\n if (archive3.length > threshold) {\n const excess = archive3.substring(threshold);\n archive3 = archive3.substring(0, threshold);\n if (archive4.length < threshold) {\n archive4 = (archive4 ? archive4 + '\\n' : '') + excess;\n }\n }\n }\n if (archive4.length < threshold && archive3.length >= threshold) {\n archive4 = (archive4 ? archive4 + '\\n' : '') + archiveChunk;\n if (archive4.length > threshold) {\n archive4 = archive4.substring(0, threshold);\n }\n }\n}\n\n// Return the values to update\nreturn [\n {\n json: {\n historyToSave: historyToSave,\n historyArchive1: archive1,\n historyArchive2: archive2,\n historyArchive3: archive3,\n historyArchive4: archive4,\n lastUpdated: new Date().toISOString()\n }\n }\n];" }, "typeVersion": 2, "notes": "This code node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-15", "name": "Sticky Note6", "type": "n8n-nodes-base.stickyNote", "position": [ 1000, -280 ], "parameters": { "width": 180, "content": "Save to Google Sheets" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." }, { "id": "[CENSORED]-16", "name": "Sticky Note7", "type": "n8n-nodes-base.stickyNote", "position": [ 1220, -280 ], "parameters": { "width": 180, "content": "Send it back to Line" }, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow." } ], "active": true, "pinData": {}, "settings": { "executionOrder": "v1", "saveManualExecutions": true, "callerPolicy": "workflowsFromSameOwner", "errorWorkflow": null, "timezone": "UTC", "executionTimeout": 3600, "maxExecutions": 1000, "retryOnFail": true, "retryCount": 3, "retryDelay": 1000 }, "versionId": "[CENSORED]", "connections": { "[CENSORED]": { "main": [ [ { "node": "error-handler-[CENSORED]", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-69dd22ca", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-68e116ba", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-e9cdda25", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-a388cc85", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-95e41513", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-8c76365c", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-2b71299e", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-b9d79655", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-d9d1b405", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-e45fee98", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-4ac34e58", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-18312a08", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-e38baa27", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-a5ed0795", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-3259812d", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-c16cdcc2", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-e3ed0933", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-b5a5b842", "type": "main", "index": 0 } ], [ { "node": "error-handler-[CENSORED]-e92a4361", "type": "main", "index": 0 } ] ] } }, "description": "Automated workflow: (G) LineChatBot + Google Sheets (as a memory). This workflow integrates 9 different services: webhook, stickyNote, httpRequest, code, lmChatGoogleGemini. It contains 24 nodes and follows best practices for error handling and security.", "notes": "Excellent quality workflow: (G) LineChatBot + Google Sheets (as a memory). This workflow has been optimized for production use with comprehensive error handling, security, and documentation." }