{ "id": "P7Tc134xq0XZFjz7", "meta": { "templateCredsSetupCompleted": true }, "name": "AI Multimodal Expense Tracker_Final_v2.2", "tags": [], "nodes": [ { "id": "789a3e35-547d-47ff-9fce-4287f1a51ee0", "name": "Google Sheets: Get Rows (Dedup lookup)", "type": "n8n-nodes-base.googleSheets", "maxTries": 2, "position": [ 560, -64 ], "parameters": { "options": {}, "filtersUI": { "values": [ { "lookupValue": "={{ $json.update_id }}", "lookupColumn": "Update_ID" } ] }, "sheetName": { "__rl": true, "mode": "id", "value": "={{ $('CONFIG - User Settings').item.json.sheet_gid_log }}" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('CONFIG - User Settings').item.json.spreadsheet_id }}" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "executeOnce": false, "retryOnFail": false, "typeVersion": 4.7, "alwaysOutputData": true }, { "id": "81ffc0d2-926c-4ac4-ba23-04c81652b99e", "name": "IF (Is Duplicate?)", "type": "n8n-nodes-base.if", "position": [ 736, -64 ], "parameters": { "options": {}, "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "loose" }, "combinator": "and", "conditions": [ { "id": "2707e1b7-5a59-47e0-9bf5-a24868021e3f", "operator": { "type": "string", "operation": "notEmpty", "singleValue": true }, "leftValue": "={{ $json.Message_ID }}", "rightValue": "=" } ] }, "looseTypeValidation": true }, "typeVersion": 2.3 }, { "id": "e0461045-0fc1-4a8f-a8f2-81189e44917f", "name": "Switch (Voice/Photo/Text)", "type": "n8n-nodes-base.switch", "position": [ 1104, -288 ], "parameters": { "rules": { "values": [ { "outputKey": "Voice", "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "loose" }, "combinator": "and", "conditions": [ { "id": "8505ca3e-24b9-4ce6-b803-3f844f5e07f5", "operator": { "type": "string", "operation": "notEmpty", "singleValue": true }, "leftValue": "={{$node[\"Telegram Trigger\"].json.message.voice}}", "rightValue": "true" } ] }, "renameOutput": true }, { "outputKey": "Photo", "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "loose" }, "combinator": "and", "conditions": [ { "id": "dfefc516-d1e3-4932-a4b4-d2f3dd2c84ae", "operator": { "type": "string", "operation": "notEmpty", "singleValue": true }, "leftValue": "={{$node[\"Telegram Trigger\"].json.message.photo}}", "rightValue": "true" } ] }, "renameOutput": true }, { "outputKey": "Text", "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "loose" }, "combinator": "and", "conditions": [ { "id": "3e137d35-f896-4ecf-bc4e-a481240c7acd", "operator": { "type": "string", "operation": "notEmpty", "singleValue": true }, "leftValue": "={{$node[\"Telegram Trigger\"].json.message.text}}", "rightValue": "true" } ] }, "renameOutput": true } ] }, "options": {}, "looseTypeValidation": true }, "typeVersion": 3.4 }, { "id": "2881f5cc-61ba-4204-acaa-f0cfb7615a1b", "name": "Code (Restore Telegram Payload)", "type": "n8n-nodes-base.code", "position": [ 944, -48 ], "parameters": { "jsCode": "return [{ json: $node[\"Telegram Trigger\"].json }];" }, "typeVersion": 2 }, { "id": "6408da1b-ca88-48ad-a351-ea89b565d527", "name": "Set (Text Context)", "type": "n8n-nodes-base.set", "position": [ 1408, 336 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "d5fe1c74-66db-4a76-ae1e-f8c8043f8309", "name": "raw_input", "type": "string", "value": "={{$json.message.text}}" }, { "id": "45bc27fc-b351-4429-a7cb-45c6138a7f7c", "name": "message_id", "type": "string", "value": "={{$json.message.message_id}}" }, { "id": "06f119fc-1fb7-4033-a1f3-68f292f294e4", "name": "chat_id", "type": "string", "value": "={{$json.message.chat.id}}" }, { "id": "98509cc8-b1b5-4384-899e-19d7a2ffe14d", "name": "source_type", "type": "string", "value": "text" }, { "id": "c25b1e8b-91e8-45ab-b0c5-189c8184223f", "name": "now", "type": "string", "value": "={{ $now.setZone('Asia/Ho_Chi_Minh').toFormat('yyyy-LL-dd HH:mm:ss') }}" }, { "id": "ba343e09-509b-4031-958f-b41ab59505fc", "name": "update_id", "type": "string", "value": "={{ $json.update_id }}" } ] } }, "typeVersion": 3.4 }, { "id": "10079662-d912-4409-91e5-09fa347111ce", "name": "Google Gemini Chat (Text \u2192 JSON)", "type": "@n8n/n8n-nodes-langchain.googleGemini", "position": [ 1648, 336 ], "parameters": { "modelId": { "__rl": true, "mode": "list", "value": "models/gemini-2.5-flash", "cachedResultName": "models/gemini-2.5-flash" }, "options": {}, "messages": { "values": [ { "content": "=You are an advanced Expense Tracker Assistant.\nYour goal is to extract expense data from the user input into structured JSON.\n\nCURRENT CONTEXT:\n- Date: {{ $json.now }}\n- Default Currency: {{ $('CONFIG - User Settings').item.json.currency_code }}\n\nRULES:\n1. Extract ALL distinct items.\n2. Category MUST be one of: [Food, Transport, Bills, Shopping, Entertainment, Other].\n3. Payment Method: Infer if possible (e.g., \"transfer\" -> Transfer), else default to \"Cash\".\n4. AMOUNT NORMALIZATION:\n - Convert \"k\" or \"grand\" to 1,000 (e.g., \"50k\" -> 50000).\n - Convert \"m\", \"mil\", or \"million\" to 1,000,000.\n - Return pure integers (no decimals).\n5. If currency is missing, use Default Currency from context.\n\nOUTPUT FORMAT (Strict JSON, No Markdown):\n{\n \"expenses\": [\n {\n \"item\": \"string (short description)\",\n \"amount\": number,\n \"currency\": \"string\",\n \"category\": \"string\",\n \"payment_method\": \"string\",\n \"date\": \"YYYY-MM-DD HH:mm:ss\"\n }\n ],\n \"summary_text\": \"string (A concise confirmation message in English)\"\n}" }, { "content": "={{$json.raw_input}}" } ] } }, "credentials": { "googlePalmApi": { "name": "" } }, "typeVersion": 1 }, { "id": "b0accb8d-9078-4361-bc9b-609e39fc6fd1", "name": "Code (Parse Gemini JSON)", "type": "n8n-nodes-base.code", "position": [ 2496, -64 ], "parameters": { "jsCode": "function extractJsonObject(text) {\n if (!text || typeof text !== 'string') return null;\n\n // Remove ```json ... ``` fences\n let cleaned = text\n .replace(/```json/gi, '```')\n .replace(/```/g, '')\n .trim();\n\n // Try direct parse\n try {\n return { obj: JSON.parse(cleaned), cleaned };\n } catch (e) {}\n\n // Fallback: extract first {...} block\n const match = cleaned.match(/\\{[\\s\\S]*\\}/);\n if (!match) return null;\n\n try {\n return { obj: JSON.parse(match[0]), cleaned: match[0] };\n } catch (e) {\n return null;\n }\n}\n\nconst aiText = $json?.content?.parts?.[0]?.text ?? '';\nconst parsed = extractJsonObject(aiText);\n\nif (!parsed) {\n throw new Error(`Gemini output is not valid JSON. Raw:\\n${aiText}`);\n}\n\nconst data = parsed.obj;\n\n// Basic validation\nif (!Array.isArray(data.expenses)) data.expenses = [];\nif (typeof data.summary_text !== 'string') data.summary_text = '';\n\n// Context: Prioritize using the current item (to be used for Text + Photo + Voice)\nconst updateIdFromTrigger = $node[\"Telegram Trigger\"]?.json?.update_id;\n\nconst ctx = {\n update_id: $json.update_id ?? updateIdFromTrigger ?? null,\n raw_input: $json.raw_input ?? null,\n message_id: $json.message_id ?? null,\n chat_id: $json.chat_id ?? null,\n source_type: $json.source_type ?? null,\n // It supports both the \"now\" field (in case of accidentally setting the wrong key with a space) and the $now field.\n now: $json.now ?? $json[\"now \"] ?? $now,\n};\n\nreturn [{\n json: {\n ...data,\n _ai_raw_text: aiText,\n _ai_clean_json_text: parsed.cleaned,\n ...ctx,\n }\n}];" }, "typeVersion": 2 }, { "id": "c47bab6f-6c9f-412f-a717-262277657d14", "name": "Code (Split expenses to items)", "type": "n8n-nodes-base.code", "position": [ 2880, -80 ], "parameters": { "jsCode": "// Get the configuration from the User Settings node.\nconst config = $('CONFIG - User Settings').item.json;\nconst timeZone = config.timezone || 'Asia/Ho_Chi_Minh';\nconst defaultCurrency = config.currency_code || 'USD';\n\nfunction formatDateTimeInTZ(dateInput, tz) {\n const d = dateInput ? new Date(dateInput) : new Date();\n if (Number.isNaN(d.getTime())) return '';\n\n const parts = new Intl.DateTimeFormat('en-GB', {\n timeZone: tz,\n year: 'numeric', month: '2-digit', day: '2-digit',\n hour: '2-digit', minute: '2-digit', second: '2-digit',\n hour12: false,\n }).formatToParts(d);\n\n const map = Object.fromEntries(parts.map(p => [p.type, p.value]));\n return `${map.year}-${map.month}-${map.day} ${map.hour}:${map.minute}:${map.second}`;\n}\n\nconst expenses = $json.expenses ?? [];\nconst updateId = $node[\"Telegram Trigger\"].json.update_id;\nconst fallbackDate = formatDateTimeInTZ($json.now ?? new Date(), timeZone);\n\nreturn expenses.map((e) => {\n const dateValue = (typeof e?.date === 'string' && e.date.trim())\n ? e.date.trim()\n : fallbackDate;\n\n return {\n json: {\n update_id: updateId,\n message_id: $json.message_id,\n chat_id: $json.chat_id,\n source_type: $json.source_type,\n raw_input: $json.raw_input,\n\n item: e.item ?? '',\n amount: Number(e.amount ?? 0),\n // Use the default currency from the Config if the AI doesn't return it.\n currency: e.currency ?? defaultCurrency,\n category: e.category ?? 'Other',\n payment_method: e.payment_method ?? 'Cash',\n\n date: dateValue,\n summary_text: $json.summary_text,\n }\n };\n});" }, "typeVersion": 2 }, { "id": "1cd58e0a-904a-4ac6-88dc-e35b6f3cbfc2", "name": "Google Sheets \u2192 Append row(s)", "type": "n8n-nodes-base.googleSheets", "position": [ 3072, -80 ], "parameters": { "columns": { "value": { "Date": "={{ $json.date }}", "Item": "={{ $json.item }}", "Amount": "={{ $json.amount }}", "Category": "={{ $json.category }}", "Currency": "={{ $json.currency }}", "Raw_Input": "={{ $json.raw_input }}", "Update_ID": "={{ $json.update_id }}", "Message_ID": "={{ $json.message_id }}", "Payment_Method": "={{ $json.payment_method }}" }, "schema": [ { "id": "Update_ID", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Update_ID", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Message_ID", "type": "string", "display": true, "required": false, "displayName": "Message_ID", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Date", "type": "string", "display": true, "required": false, "displayName": "Date", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Item", "type": "string", "display": true, "required": false, "displayName": "Item", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Amount", "type": "string", "display": true, "required": false, "displayName": "Amount", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Payment_Method", "type": "string", "display": true, "required": false, "displayName": "Payment_Method", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Category", "type": "string", "display": true, "required": false, "displayName": "Category", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Currency", "type": "string", "display": true, "required": false, "displayName": "Currency", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "Raw_Input", "type": "string", "display": true, "required": false, "displayName": "Raw_Input", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "append", "sheetName": { "__rl": true, "mode": "id", "value": "={{ $('CONFIG - User Settings').item.json.sheet_gid_log }}" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('CONFIG - User Settings').item.json.spreadsheet_id }}" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "retryOnFail": true, "typeVersion": 4.7 }, { "id": "d57bc019-f640-48d0-9628-4e3c9c1f5d57", "name": "IF (Has expenses?)", "type": "n8n-nodes-base.if", "position": [ 2672, -64 ], "parameters": { "options": {}, "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "loose" }, "combinator": "and", "conditions": [ { "id": "8d8e2ec2-b28e-47f8-8066-69c3f036fa21", "operator": { "type": "string", "operation": "notEmpty", "singleValue": true }, "leftValue": "={{ ($json.expenses || []).length > 0 }}", "rightValue": "" } ] }, "looseTypeValidation": true }, "typeVersion": 2.3 }, { "id": "ee625a24-d767-4ffe-88ab-0b174e656a3c", "name": "Set (Photo Context)", "type": "n8n-nodes-base.set", "position": [ 1408, -64 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "03df0e04-9fbe-49d6-8018-52f43f252b96", "name": "update_id", "type": "string", "value": "={{$json.update_id}}" }, { "id": "12fc48a7-aacf-460a-95d5-93e3e4dd1b4c", "name": "message_id", "type": "string", "value": "={{$json.message.message_id}}" }, { "id": "93ec3b26-05aa-45d6-99e6-52e12d3cdfbe", "name": "chat_id", "type": "string", "value": "={{$json.message.chat.id}}" }, { "id": "9955eb19-7634-4cf9-8cf8-3a868aaacad2", "name": "source_type", "type": "string", "value": "photo" }, { "id": "8a7b2fc9-350c-499e-a5aa-d28cc37701b7", "name": "caption", "type": "string", "value": "={{$json.message.caption || \"[photo]\"}}" }, { "id": "5c70c114-304e-446f-8ced-30d935ea46f1", "name": "raw_input", "type": "string", "value": "={{$json.message.caption || \"[photo]\"}}" }, { "id": "e7e5b2d3-cbe6-4dec-a0b2-3ee3e5906fcc", "name": "now", "type": "string", "value": "={{ $now.setZone('Asia/Ho_Chi_Minh').toFormat('yyyy-LL-dd HH:mm:ss') }}" } ] }, "includeOtherFields": true }, "typeVersion": 3.4 }, { "id": "4da8ecb9-2306-457f-97d2-de9a6200bd5a", "name": "Code (Pick Best Photo)", "type": "n8n-nodes-base.code", "position": [ 1616, -64 ], "parameters": { "jsCode": "const photos = $json?.message?.photo ?? [];\nif (!photos.length) throw new Error('No message.photo found');\n\nconst best = [...photos].sort((a, b) => (a.file_size ?? 0) - (b.file_size ?? 0)).pop();\n\nreturn [{\n json: {\n ...$json,\n file_id: best.file_id,\n photo_width: best.width,\n photo_height: best.height,\n photo_file_size: best.file_size ?? null,\n }\n}];" }, "typeVersion": 2 }, { "id": "9318dbfe-62f6-4136-a880-05a6e8b32f52", "name": "Code (Normalize Gemini Image Output)", "type": "n8n-nodes-base.code", "position": [ 2224, -64 ], "parameters": { "jsCode": "// 1) Get text output from Gemini Analyze Image\nconst aiText =\n $json?.content?.parts?.[0]?.text ??\n $json?.text ??\n '';\n\n// 2) Get context from Set (Photo Context)\nconst ctx = $node[\"Set (Photo Context)\"].json;\n\nreturn [{\n json: {\n // Standardize to match the format Parse is reading.\n content: { parts: [{ text: aiText }] },\n\n // Context for downstream to share\n update_id: ctx.update_id,\n message_id: ctx.message_id,\n chat_id: ctx.chat_id,\n source_type: ctx.source_type ?? 'photo',\n\n // raw_input: prioritize raw_input if you have it, fallback caption\n raw_input: ctx.raw_input ?? ctx.caption ?? '[photo]',\n\n now: ctx.now ?? $now,\n }\n}];" }, "typeVersion": 2 }, { "id": "ea8bb0d4-9ea0-482c-b2d2-3e035f810993", "name": "Telegram \u2192 Send Error Message and wait for response", "type": "n8n-nodes-base.telegram", "position": [ 2880, 128 ], "parameters": { "text": "=\u26a0\ufe0f Could not understand expenses in: \"{{$json.raw_input}}\"\nPlease try format: \"Lunch 10k\" or \"Taxi 50k\".", "chatId": "={{ $('Telegram Trigger').item.json.message.chat.id }}", "additionalFields": { "reply_to_message_id": "={{ $json.message_id }}" } }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "dd199ba1-0778-49f7-9fb6-a932092fd5f4", "name": "Telegram \u2192 Send Final Message", "type": "n8n-nodes-base.telegram", "position": [ 2880, -272 ], "parameters": { "text": "={{ $json.summary_text }}", "chatId": "={{ $json.chat_id }}", "additionalFields": { "reply_to_message_id": "={{ $json.message_id }}" } }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "64d0da46-7a55-460e-914a-f3f89fc53d78", "name": "Google Gemini (Analyze Image)", "type": "@n8n/n8n-nodes-langchain.googleGemini", "position": [ 2016, -64 ], "parameters": { "text": "Analyze this receipt image and extract expense items.\nReturn ONLY raw JSON (no markdown, no ```).\n\nCONTEXT:\n- Default Currency: {{ $('CONFIG - User Settings').item.json.currency_code }}\n\nOutput schema:\n{\n \"expenses\": [\n {\n \"item\": \"string\",\n \"amount\": number,\n \"currency\": \"string\",\n \"category\": \"Food|Shopping|Transport|Bills|Entertainment|Other\",\n \"payment_method\": \"Cash|Card|Transfer\",\n \"date\": \"YYYY-MM-DD HH:mm:ss\"\n }\n ],\n \"summary_text\": \"string (Concise summary in English, e.g. 'Receipt processed: Item A, Item B')\"\n}", "modelId": { "__rl": true, "mode": "list", "value": "models/gemini-2.5-flash", "cachedResultName": "models/gemini-2.5-flash" }, "options": {}, "resource": "image", "inputType": "binary", "operation": "analyze" }, "credentials": { "googlePalmApi": { "name": "" } }, "typeVersion": 1 }, { "id": "7af32a67-6212-439d-8189-b27b94a8261f", "name": "Set (Voice Context)", "type": "n8n-nodes-base.set", "position": [ 1408, -464 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "c84c376e-40f2-4026-9875-9e36880714eb", "name": "update_id", "type": "string", "value": "={{ $json.update_id }}" }, { "id": "55101232-245a-43e9-a903-bdf36cffb71d", "name": "message_id", "type": "string", "value": "={{$json.message.message_id}}" }, { "id": "4f342238-d326-498c-9570-fd1f5a5fa40f", "name": "chat_id", "type": "string", "value": "={{$json.message.chat.id}}" }, { "id": "72c7c3ab-cd23-49e7-b2e9-52d78317a8d2", "name": "source_type", "type": "string", "value": "voice" }, { "id": "229a19c4-9e34-4f76-b1e6-0ba16b0fbc45", "name": "file_id", "type": "string", "value": "={{$json.message.voice.file_id}}" }, { "id": "e953e5e2-356a-434c-923a-d157c7f8dea8", "name": "raw_input", "type": "string", "value": "[voice]" }, { "id": "15a7e226-39c0-42d3-8e08-d904eb8c6758", "name": "now", "type": "string", "value": "={{ $now.setZone('Asia/Ho_Chi_Minh').toFormat('yyyy-LL-dd HH:mm:ss') }}" } ] } }, "typeVersion": 3.4 }, { "id": "fc1d557e-30b4-4f28-852a-f19af6ddcb76", "name": "Telegram \u2192 Get Voice File", "type": "n8n-nodes-base.telegram", "position": [ 1600, -464 ], "parameters": { "fileId": "={{$json.file_id}}", "resource": "file", "additionalFields": { "mimeType": "audio/ogg" } }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "022846d3-718f-41ad-b6c2-89d990e95629", "name": "Telegram \u2192 Get Image File", "type": "n8n-nodes-base.telegram", "position": [ 1808, -64 ], "parameters": { "fileId": "={{$json.file_id}}", "resource": "file", "additionalFields": { "mimeType": "image/jpeg" } }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "3c664eb1-856f-4b6b-8408-351c5f2653dc", "name": "Google Gemini (Analyze Audio)", "type": "@n8n/n8n-nodes-langchain.googleGemini", "position": [ 1808, -464 ], "parameters": { "text": "You are an advanced Expense Tracker Assistant.\nInput is an AUDIO message (voice note).\n\nTASKS:\n1. Transcribe the audio accurately to text (Detect language automatically).\n2. Extract expense data from the transcript.\n\nCONTEXT:\n- Default Currency: {{ $('CONFIG - User Settings').item.json.currency_code }}\n\nOutput schema (Strict JSON, No Markdown):\n{\n \"expenses\": [\n {\n \"item\": \"string\",\n \"amount\": number,\n \"currency\": \"string\",\n \"category\": \"Food|Shopping|Transport|Bills|Entertainment|Other\",\n \"payment_method\": \"Cash|Card|Transfer\",\n \"date\": \"YYYY-MM-DD HH:mm:ss\"\n }\n ],\n \"summary_text\": \"string (Concise summary in English)\"\n}", "modelId": { "__rl": true, "mode": "list", "value": "models/gemini-2.5-flash", "cachedResultName": "models/gemini-2.5-flash" }, "options": {}, "resource": "audio", "inputType": "binary", "operation": "analyze" }, "credentials": { "googlePalmApi": { "name": "" } }, "typeVersion": 1 }, { "id": "5a718e98-34de-407f-ab47-e975d3249ebe", "name": "Code (Normalize Gemini Audio Output)", "type": "n8n-nodes-base.code", "position": [ 2016, -464 ], "parameters": { "jsCode": "// 1) Get text output from Gemini Analyze Audio\nconst aiText =\n $json?.content?.parts?.[0]?.text ??\n $json?.text ??\n '';\n\n// 2) Get context from Set (Voice Context)\nconst ctx = $node[\"Set (Voice Context)\"].json;\n\nreturn [{\n json: {\n // Standardize to match the format Parse is reading.\n content: { parts: [{ text: aiText }] },\n\n // Context for downstream to share\n update_id: ctx.update_id,\n message_id: ctx.message_id,\n chat_id: ctx.chat_id,\n source_type: ctx.source_type ?? 'voice',\n\n // raw_input: retain the [voice] marker or caption\n raw_input: ctx.raw_input ?? '[voice]',\n\n now: ctx.now ?? $now,\n }\n}];" }, "typeVersion": 2 }, { "id": "0f04fa94-5c7b-48ec-9ad3-558a7cb24316", "name": "Code (Normalize Gemini Text Output)", "type": "n8n-nodes-base.code", "position": [ 2016, 336 ], "parameters": { "jsCode": "// 1) Get text output from Gemini Chat (Text)\nconst aiText =\n $json?.content?.parts?.[0]?.text ??\n $json?.text ??\n '';\n\n// 2) Get context from Set (Text Context)\nconst ctx = $node[\"Set (Text Context)\"].json;\n\nreturn [{\n json: {\n // Standardize to match the format Parse is reading.\n content: { parts: [{ text: aiText }] },\n\n // Context for downstream to share\n update_id: ctx.update_id,\n message_id: ctx.message_id,\n chat_id: ctx.chat_id,\n source_type: ctx.source_type ?? 'text',\n raw_input: ctx.raw_input ?? '[text]',\n\n now: ctx.now ?? $now,\n }\n}];" }, "typeVersion": 2 }, { "id": "e8c72bf3-485e-4a10-bfb2-2c98a966e9bb", "name": "Switch (Command Router)", "type": "n8n-nodes-base.switch", "position": [ 416, -272 ], "parameters": { "rules": { "values": [ { "outputKey": "AddBudget", "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "c48f3c1f-65ec-4d06-9464-7bc8efa70bdf", "operator": { "type": "boolean", "operation": "equals" }, "leftValue": "={{ /^\\/add(?:@\\w+)?\\s+budget\\b/i.test(($json.message?.text || '').trim()) }}", "rightValue": true } ] }, "renameOutput": true }, { "outputKey": "Default", "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "58c02279-ceef-4ab7-bd74-4223c5cf8abb", "operator": { "type": "boolean", "operation": "equals" }, "leftValue": "={{ !/^\\/add(?:@\\w+)?\\s+budget\\b/i.test(($json.message?.text || '').trim()) }}", "rightValue": true } ] }, "renameOutput": true } ] }, "options": {} }, "typeVersion": 3.4 }, { "id": "bed08bc1-2a8d-4e18-90c0-3a9a145169bc", "name": "Code (Parse Budget Amount)", "type": "n8n-nodes-base.code", "position": [ 752, -928 ], "parameters": { "jsCode": "function parseAmount(text) {\n if (!text) return null;\n\n // Remove command prefix\n let s = text.trim().replace(/^\\/add(?:@\\w+)?\\s+budget\\b/i, '').trim();\n\n // Normalize: Remove commas (1,000 -> 1000)\n s = s.replace(/,/g, '').replace(/\\s+/g, ' ').trim();\n const lower = s.toLowerCase();\n\n // Find number\n const m = lower.match(/(\\d+(?:\\.\\d+)?)/);\n if (!m) return null;\n\n const num = Number(m[1]);\n if (!Number.isFinite(num)) return null;\n\n let multiplier = 1;\n // Global suffixes: k = 1000, m = 1,000,000\n if (/(k|grand)\\b/i.test(lower)) multiplier = 1000;\n if (/(m|mil|million)\\b/i.test(lower)) multiplier = 1000000;\n \n // support Vietnamese currency (Hybrid)\n if (/(tr|tri\u1ec7u|trieu)\\b/i.test(lower)) multiplier = 1000000; \n\n return Math.round(num * multiplier);\n}\n\nconst text = $json.message?.text ?? '';\nconst amount = parseAmount(text);\n// Get the configuration to reformat the display for the user\nconst config = $('CONFIG - User Settings').item.json;\nconst locale = config.locale || 'en-US';\nconst symbol = config.currency_symbol || '$';\n\nreturn [{\n json: {\n ok: !!(amount && amount > 0),\n amount: amount || 0,\n chat_id: $json.message?.chat?.id,\n message_id: $json.message?.message_id,\n raw_text: text,\n formatted_amount: (amount || 0).toLocaleString(locale) + ' ' + symbol\n }\n}];" }, "typeVersion": 2 }, { "id": "bef10b08-afb6-492e-8581-f859ee5084b7", "name": "IF (Budget ok?)", "type": "n8n-nodes-base.if", "position": [ 944, -928 ], "parameters": { "options": {}, "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "4c555183-5715-4b0b-91ab-b2f14498a9e5", "operator": { "type": "boolean", "operation": "true", "singleValue": true }, "leftValue": "={{ $json.ok }}", "rightValue": "" } ] } }, "typeVersion": 2.3 }, { "id": "d7a70e37-8fab-4c8e-b040-22897d66b88a", "name": "Telegram \u2192 Budget Error", "type": "n8n-nodes-base.telegram", "position": [ 1184, -736 ], "parameters": { "text": "=\u26a0\ufe0f Invalid format.\nUsage: /add budget 500k or /add budget 10m.\n(Input: {{$json.raw_text}})", "chatId": "={{ $json.chat_id }}", "additionalFields": { "reply_to_message_id": "={{ $json.message_id }}" } }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "9551f85a-3dd3-413c-a5b9-155a3065611e", "name": "Google Sheets \u2192 Append or update row in sheet", "type": "n8n-nodes-base.googleSheets", "position": [ 1168, -944 ], "parameters": { "columns": { "value": { "ts": "={{ new Date().toLocaleString('vi-VN', { timeZone: 'Asia/Ho_Chi_Minh' }) }}", "amount": "={{ $json.amount }}", "raw_text": "={{ $json.raw_text }}" }, "schema": [ { "id": "ts", "type": "string", "display": true, "required": false, "displayName": "ts", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "amount", "type": "string", "display": true, "required": false, "displayName": "amount", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "raw_text", "type": "string", "display": true, "required": false, "displayName": "raw_text", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "append", "sheetName": { "__rl": true, "mode": "id", "value": "={{ Number($('CONFIG - User Settings').item.json.sheet_gid_budget) }}" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('CONFIG - User Settings').item.json.spreadsheet_id }}" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4.7 }, { "id": "af27370d-b54a-4b35-b31d-679a1889ebe8", "name": "Telegram \u2192 Budget Updated", "type": "n8n-nodes-base.telegram", "position": [ 1360, -944 ], "parameters": { "text": "=\u2705 Budget updated to: {{$json.formatted_amount}}", "chatId": "={{ $('IF (Budget ok?)').item.json.chat_id }}", "additionalFields": { "reply_to_message_id": "={{ $('IF (Budget ok?)').item.json.message_id }}" } }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "179743fe-7387-48b4-a2e0-50a5b9479ad4", "name": "GS - Get Daily Report Range", "type": "n8n-nodes-base.googleSheets", "position": [ 4512, -80 ], "parameters": { "options": { "dataLocationOnSheet": { "values": { "range": "D1:I2", "rangeDefinition": "specifyRangeA1" } } }, "sheetName": { "__rl": true, "mode": "id", "value": "={{ Number($('CONFIG - User Settings').item.json.sheet_gid_dashboard) }}" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ $('CONFIG - User Settings').item.json.spreadsheet_id }}" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "notesInFlow": false, "typeVersion": 4.7 }, { "id": "9852ebb9-18c4-4420-9281-048c03995433", "name": "Code - Build Daily Report", "type": "n8n-nodes-base.code", "position": [ 4704, -80 ], "parameters": { "jsCode": "const r = $json;\nconst config = $('CONFIG - User Settings').item.json;\nconst locale = config.locale || 'en-US';\nconst symbol = config.currency_symbol || '$';\n\nfunction num(v){ return Number(String(v ?? '0').replace(/[^\\d.-]/g,'')) || 0; }\nfunction fmt(n){ return num(n).toLocaleString(locale) + ' ' + symbol; }\n\nconst note = String(r.note ?? '').trim();\n\nconst text =\n`\ud83d\udcca *Daily Report* (${r.date})\n\n\ud83d\udcb0 Total budget: *${fmt(r.total_budget)}*\n\ud83d\udcb8 Total spent: *${fmt(r.total_spent)}*\n\ud83c\udfe6 Remaining: *${fmt(r.remaining)}*\n\ud83d\udcc9 Daily Avg: *${fmt(r.monthly_rate)}*${note ? `\\n\\n\ud83d\udcdd Note: ${note}` : ''}`;\n\nreturn [{ json: { text } }];" }, "typeVersion": 2 }, { "id": "8a1698e4-c3df-4ca8-be1a-c0c595d70058", "name": "TG - Send Daily Report", "type": "n8n-nodes-base.telegram", "position": [ 4912, -80 ], "parameters": { "text": "={{ $json.text }}", "chatId": "={{ $node[\"Telegram Trigger\"].json.message.chat.id }}", "additionalFields": {} }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "aeaf6ba9-378d-4065-b020-72d63f68bf34", "name": "Code (Schedule Report Token)", "type": "n8n-nodes-base.code", "position": [ 3248, -80 ], "parameters": { "jsCode": "const chatId = $node[\"Telegram Trigger\"].json.message?.chat?.id;\nif (!chatId) throw new Error(\"Missing chat_id from Telegram Trigger\");\n\nconst token = `${Date.now()}_${Math.random().toString(16).slice(2)}`;\n\nreturn [{\n json: {\n chat_id: String(chatId),\n report_token: token,\n }\n}];" }, "typeVersion": 2 }, { "id": "d8055f37-ddb8-4b09-97c9-733fd69d5259", "name": "Telegram Trigger", "type": "n8n-nodes-base.telegramTrigger", "position": [ 0, -272 ], "parameters": { "updates": [ "message" ], "additionalFields": {} }, "credentials": { "telegramApi": { "name": "" } }, "typeVersion": 1.2 }, { "id": "a6ee6c21-fa8e-44eb-b200-d42766bcb7ad", "name": "Code - Check Latest Token", "type": "n8n-nodes-base.code", "position": [ 3920, -80 ], "parameters": { "jsCode": "const scheduledToken = $node[\"Wait\"].json.report_token;\n\n// Data table Get row(s): each row is an item => must be retrieved via $input.all()\nconst items = $input.all().map(i => i.json);\n\nif (!items.length) {\n return [{ json: { shouldSend: false, reason: 'No row found', itemsCount: 0 } }];\n}\n\n// If the Upgrade is correct, there is usually only 1 item.\n// But to be safe, use the newest one based on updatedAt (fallback is based on ID).\nitems.sort((a, b) => {\n const ta = new Date(a.updatedAt || a.createdAt || 0).getTime();\n const tb = new Date(b.updatedAt || b.createdAt || 0).getTime();\n if (ta !== tb) return tb - ta;\n return (b.id || 0) - (a.id || 0);\n});\n\nconst latest = items[0];\nconst latestToken = latest?.report_token ?? null;\n\nreturn [{\n json: {\n shouldSend: String(latestToken ?? '') === String(scheduledToken ?? ''),\n debug_latestToken: latestToken,\n debug_scheduledToken: scheduledToken,\n debug_itemsCount: items.length,\n debug_latestRowId: latest?.id ?? null,\n }\n}];" }, "typeVersion": 2 }, { "id": "f5ab1340-25b8-4573-9225-8aa67e1e434a", "name": "If", "type": "n8n-nodes-base.if", "position": [ 4096, -64 ], "parameters": { "options": {}, "conditions": { "options": { "version": 3, "leftValue": "", "caseSensitive": true, "typeValidation": "strict" }, "combinator": "and", "conditions": [ { "id": "b4555b5d-0140-41df-bc19-01adab9af376", "operator": { "type": "boolean", "operation": "true", "singleValue": true }, "leftValue": "={{ $json.shouldSend }}", "rightValue": "" } ] } }, "typeVersion": 2.3 }, { "id": "b4027f12-8ec6-4f80-83a5-678229609c19", "name": "ReportTokens", "type": "n8n-nodes-base.dataTable", "position": [ 3424, -80 ], "parameters": { "columns": { "value": { "chat_id": "={{ $json.chat_id }}", "updated_at": "={{ $now.setZone('Asia/Ho_Chi_Minh').toFormat('yyyy-LL-dd HH:mm:ss') }}", "report_token": "={{ $json.report_token }}" }, "schema": [ { "id": "chat_id", "type": "string", "display": true, "removed": false, "readOnly": false, "required": false, "displayName": "chat_id", "defaultMatch": false }, { "id": "report_token", "type": "string", "display": true, "removed": false, "readOnly": false, "required": false, "displayName": "report_token", "defaultMatch": false }, { "id": "updated_at", "type": "string", "display": true, "removed": false, "readOnly": false, "required": false, "displayName": "updated_at", "defaultMatch": false } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "filters": { "conditions": [ { "keyName": "chat_id", "keyValue": "={{ $json.chat_id }}" } ] }, "options": {}, "operation": "upsert", "dataTableId": { "__rl": true, "mode": "list", "value": "QvSW24TWoTE0N3cH", "cachedResultUrl": "/projects/abUHa4TKmFzPJngM/datatables/QvSW24TWoTE0N3cH", "cachedResultName": "ReportTokens" } }, "typeVersion": 1 }, { "id": "9e10464d-c414-4091-a991-089403a7ae39", "name": "Data table \u2192 Get row(s)", "type": "n8n-nodes-base.dataTable", "position": [ 3744, -80 ], "parameters": { "filters": { "conditions": [ { "keyName": "chat_id", "keyValue": "={{ $node[\"Wait\"].json.chat_id }}" } ] }, "operation": "get", "dataTableId": { "__rl": true, "mode": "list", "value": "QvSW24TWoTE0N3cH", "cachedResultUrl": "/projects/abUHa4TKmFzPJngM/datatables/QvSW24TWoTE0N3cH", "cachedResultName": "ReportTokens" } }, "typeVersion": 1 }, { "id": "fa1ae335-6574-45fc-aa5a-a84fdfd1ba2f", "name": "Data table \u2192 Delete row(s)", "type": "n8n-nodes-base.dataTable", "position": [ 4304, -80 ], "parameters": { "filters": { "conditions": [ { "keyName": "chat_id", "keyValue": "={{ $node[\"Wait\"].json.chat_id }}" } ] }, "options": {}, "operation": "deleteRows", "dataTableId": { "__rl": true, "mode": "list", "value": "QvSW24TWoTE0N3cH", "cachedResultUrl": "/projects/abUHa4TKmFzPJngM/datatables/QvSW24TWoTE0N3cH", "cachedResultName": "ReportTokens" } }, "typeVersion": 1 }, { "id": "fa2618f9-6914-41ab-a274-0f90dbebb441", "name": "Wait", "type": "n8n-nodes-base.wait", "position": [ 3584, -80 ], "parameters": { "unit": "minutes", "amount": 30 }, "typeVersion": 1.1 }, { "id": "52f3a9a9-5cc4-4c5a-9cf1-fdb42663c306", "name": "CONFIG - User Settings", "type": "n8n-nodes-base.set", "position": [ 208, -272 ], "parameters": { "options": {}, "assignments": { "assignments": [ { "id": "2696366a-a0ac-4911-8f0b-3c1e4cb4efab", "name": "spreadsheet_id", "type": "string", "value": "Input your Spread Sheet ID here" }, { "id": "393db088-bfe0-493e-9fdb-61eb49d62fd1", "name": "sheet_gid_log", "type": "string", "value": "gid=0" }, { "id": "719092f5-e6b7-416c-9b73-4b7346bdf6df", "name": "sheet_gid_dashboard", "type": "string", "value": "Input your Sheet \"Dashboard\" ID here" }, { "id": "56c12832-6f97-47b0-93de-986dcaa1357f", "name": "sheet_gid_budget", "type": "string", "value": "Input your Sheet \"Budget Topups\" ID here" }, { "id": "4de77bb6-8952-4df1-a34d-16b4c9393b8a", "name": "currency_code", "type": "string", "value": "USD" }, { "id": "13626830-f7c6-44b3-bd31-3b0ac81b56e3", "name": "currency_symbol", "type": "string", "value": "$" }, { "id": "8a3aba9b-1e2d-4608-89c0-4713c594e657", "name": "locale", "type": "string", "value": "en-US" }, { "id": "39a94c66-e67f-4e3a-8f01-2a5e76040ebe", "name": "timezone", "type": "string", "value": "Input your timezone" } ] }, "includeOtherFields": true }, "typeVersion": 3.4 }, { "id": "6bb87bf8-368b-4e9a-8ef2-77e0e610d5ae", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [ -32, -1024 ], "parameters": { "width": 592, "height": 576, "content": "# AI Multimodal Expense Tracker\n**Global, Multi-Currency Expense Logger via Telegram (Text, Voice, Photo).**\n\nThis workflow turns Telegram into a frictionless finance assistant using Gemini AI. It supports receipt scanning, voice logging, budget management, and smart daily reporting.\n\n### How it works\n1. **Router:** Routes incoming messages (Text, Audio, Photo) to the specific Gemini AI agent.\n2. **AI Extraction:** Gemini analyzes the input to extract structured data (Item, Amount, Category).\n3. **Normalization:** Javascript logic normalizes numbers (k/m suffixes) and handles global currency formatting based on your Locale config.\n4. **Logging:** Data is appended to Google Sheets.\n5. **Smart Report:** A \"debounce\" logic waits for 30 minutes of inactivity before sending a daily summary to avoid spamming.\n\n### Setup steps\n1. **Prerequisites:** You **MUST** copy the provided Google Sheet Template and create a \"ReportTokens\" Data Table in n8n (See Template Description).\n2. **Config:** Open the `CONFIG - User Settings` node to set your Sheet ID, Currency (USD/VND), and Locale.\n3. **Credentials:** Connect Telegram, Google Sheets, and Google Gemini (PaLM) accounts." }, "typeVersion": 1 }, { "id": "6d5e677d-c3f8-4e4d-932b-f03ff87e6b22", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [ -32, -368 ], "parameters": { "color": 7, "width": 1280, "height": 480, "content": "## 1. Input & Routing\nInitializes configuration, handles credentials, and routes inputs to the appropriate processing chain (Command, Voice, Photo, or Text)." }, "typeVersion": 1 }, { "id": "4489dbec-b060-4b53-a509-1dd6f053cf02", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [ 1280, -544 ], "parameters": { "color": 7, "width": 1104, "height": 1072, "content": "## 2. AI Extraction & Normalization\nGemini AI analyzes multimodal inputs to extract structured JSON. Code nodes normalize currency formats and parse the AI response." }, "typeVersion": 1 }, { "id": "5836aead-4611-4f97-9066-84e1b4531ce1", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [ 3216, -176 ], "parameters": { "color": 7, "width": 1856, "height": 288, "content": "## 5. Smart Debounced Reporting (optional)\nUses n8n Data Table to wait for 30 minutes of inactivity before generating and sending a daily financial summary." }, "typeVersion": 1 }, { "id": "7d325593-4132-4125-8f8b-fd167afaecf6", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [ 704, -1024 ], "parameters": { "color": 7, "width": 784, "height": 432, "content": "## 4. Logging & Budget Logic\nSplits multiple items into separate rows, handles \"/add budget\" commands, and writes clean data to Google Sheets." }, "typeVersion": 1 }, { "id": "f9de232a-e13f-423d-9907-0f5516b0a9a9", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [ 112, -112 ], "parameters": { "color": 3, "width": 304, "height": 176, "content": "### \u26a0\ufe0f CRITICAL SETUP REQUIRED\n1. **Google Sheet:** You must use the Template provided in the description.\n2. **Data Table (optional):** You must create a `ReportTokens` table in n8n for the reporting feature to work. \nCheck the Template Description for the setup guide!" }, "typeVersion": 1 }, { "id": "2dc28159-a189-4b28-8982-44cd7558d18b", "name": "Sticky Note6", "type": "n8n-nodes-base.stickyNote", "position": [ 2416, -384 ], "parameters": { "color": 7, "width": 784, "height": 688, "content": "## 3. Logging & Feedback\nValidates AI output, splits multiple items, logs to Google Sheets, and sends success/error feedback to Telegram." }, "typeVersion": 1 } ], "active": false, "settings": { "timezone": "Asia/Ho_Chi_Minh", "callerPolicy": "workflowsFromSameOwner", "timeSavedMode": "fixed", "availableInMCP": false, "executionOrder": "v1", "executionTimeout": -1, "saveExecutionProgress": true }, "versionId": "f0b24ec4-2588-4ea3-b4bb-c6747d837dbe", "connections": { "If": { "main": [ [ { "node": "Data table \u2192 Delete row(s)", "type": "main", "index": 0 } ] ] }, "Wait": { "main": [ [ { "node": "Data table \u2192 Get row(s)", "type": "main", "index": 0 } ] ] }, "ReportTokens": { "main": [ [ { "node": "Wait", "type": "main", "index": 0 } ] ] }, "IF (Budget ok?)": { "main": [ [ { "node": "Google Sheets \u2192 Append or update row in sheet", "type": "main", "index": 0 } ], [ { "node": "Telegram \u2192 Budget Error", "type": "main", "index": 0 } ] ] }, "Telegram Trigger": { "main": [ [ { "node": "CONFIG - User Settings", "type": "main", "index": 0 } ] ] }, "IF (Has expenses?)": { "main": [ [ { "node": "Code (Split expenses to items)", "type": "main", "index": 0 }, { "node": "Telegram \u2192 Send Final Message", "type": "main", "index": 0 } ], [ { "node": "Telegram \u2192 Send Error Message and wait for response", "type": "main", "index": 0 } ] ] }, "IF (Is Duplicate?)": { "main": [ [], [ { "node": "Code (Restore Telegram Payload)", "type": "main", "index": 0 } ] ] }, "Set (Text Context)": { "main": [ [ { "node": "Google Gemini Chat (Text \u2192 JSON)", "type": "main", "index": 0 } ] ] }, "Set (Photo Context)": { "main": [ [ { "node": "Code (Pick Best Photo)", "type": "main", "index": 0 } ] ] }, "Set (Voice Context)": { "main": [ [ { "node": "Telegram \u2192 Get Voice File", "type": "main", "index": 0 } ] ] }, "CONFIG - User Settings": { "main": [ [ { "node": "Switch (Command Router)", "type": "main", "index": 0 } ] ] }, "Code (Pick Best Photo)": { "main": [ [ { "node": "Telegram \u2192 Get Image File", "type": "main", "index": 0 } ] ] }, "Switch (Command Router)": { "main": [ [ { "node": "Code (Parse Budget Amount)", "type": "main", "index": 0 } ], [ { "node": "Google Sheets: Get Rows (Dedup lookup)", "type": "main", "index": 0 } ] ] }, "Code (Parse Gemini JSON)": { "main": [ [ { "node": "IF (Has expenses?)", "type": "main", "index": 0 } ] ] }, "Code - 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