Workflow: engineer an n8n flow that executes Splitout Code Automation Webhook
Integrations: code, httpRequest, if, splitOut, stickyNote, webhook

{"nodes": [{"name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [880, 540], "parameters": {"content": "## Edit your own prompt \u2b07\ufe0f\n"}, "typeVersion": 1}, {"name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [-380, 580], "parameters": {"content": "## Filter comments and customize your trigger words \u2b07\ufe0f"}, "typeVersion": 1}, {"name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [-120, 560], "parameters": {"content": "## Replace your gitlab URL and token \u2b07\ufe0f"}, "typeVersion": 1}, {"name": "Webhook", "type": "n8n-nodes-base.webhook", "position": [-540, 760], "webhookId": "6cfd2f23-6f45-47d4-9fe0-8f6f1c05829a", "parameters": {"path": "e21095c0-1876-4cd9-9e92-a2eac737f03e", "options": {}, "httpMethod": "POST"}, "typeVersion": 1.1}, {"name": "Code", "type": "n8n-nodes-base.code", "position": [720, 540], "parameters": {"mode": "runOnceForEachItem", "jsCode": "// Loop over input items and add a new field called 'myNewField' to the JSON of each one\nvar diff = $input.item.json.gitDiff\n\nlet lines = diff.trimEnd().split('\\n');\n\nlet originalCode = '';\nlet newCode = '';\n\nlines.forEach(line => {\n console.log(line)\n if (line.startsWith('-')) {\n originalCode += line + \"\\n\";\n } else if (line.startsWith('+')) {\n newCode += line + \"\\n\";\n } else {\n originalCode += line + \"\\n\";\n newCode += line + \"\\n\";\n }\n});\n\nreturn {\n originalCode:originalCode,\n newCode:newCode\n};\n\n"}, "typeVersion": 2}, {"name": "Split Out1", "type": "n8n-nodes-base.splitOut", "position": [140, 740], "parameters": {"options": {}, "fieldToSplitOut": "changes"}, "typeVersion": 1}, {"name": "OpenAI Chat Model1", "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "position": [900, 860], "parameters": {"options": {"baseURL": ""}}, "typeVersion": 1}, {"name": "Get Changes1", "type": "n8n-nodes-base.httpRequest", "position": [-60, 740], "parameters": {"url": "=https://gitlab.com/api/v4/projects/{{ $json[\"body\"][\"project_id\"] }}/merge_requests/{{ $json[\"body\"][\"merge_request\"][\"iid\"] }}/changes", "options": {}, "sendHeaders": true, "headerParameters": {"parameters": [{"name": "PRIVATE-TOKEN"}]}}, "typeVersion": 4.1}, {"name": "Skip File Change1", "type": "n8n-nodes-base.if", "position": [340, 740], "parameters": {"options": {}, "conditions": {"options": {"leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"operator": {"type": "boolean", "operation": "false", "singleValue": true}, "leftValue": "={{ $json.renamed_file }}", "rightValue": ""}, {"operator": {"type": "boolean", "operation": "false", "singleValue": true}, "leftValue": "={{ $json.deleted_file }}", "rightValue": ""}, {"operator": {"type": "string", "operation": "startsWith"}, "leftValue": "={{ $json.diff }}", "rightValue": "@@"}]}}, "typeVersion": 2}, {"name": "Parse Last Diff Line1", "type": "n8n-nodes-base.code", "position": [540, 540], "parameters": {"mode": "runOnceForEachItem", "jsCode": "const parseLastDiff = (gitDiff) => {\n gitDiff = gitDiff.replace(/\\n\\\\ No newline at end of file/, '')\n \n const diffList = gitDiff.trimEnd().split('\\n').reverse();\n const lastLineFirstChar = diffList?.[0]?.[0];\n const lastDiff =\n diffList.find((item) => {\n return /^@@ \\-\\d+,\\d+ \\+\\d+,\\d+ @@/g.test(item);\n }) || '';\n\n const [lastOldLineCount, lastNewLineCount] = lastDiff\n .replace(/@@ \\-(\\d+),(\\d+) \\+(\\d+),(\\d+) @@.*/g, ($0, $1, $2, $3, $4) => {\n return `${+$1 + +$2},${+$3 + +$4}`;\n })\n .split(',');\n \n if (!/^\\d+$/.test(lastOldLineCount) || !/^\\d+$/.test(lastNewLineCount)) {\n return {\n lastOldLine: -1,\n lastNewLine: -1,\n gitDiff,\n };\n }\n\n\n const lastOldLine = lastLineFirstChar === '+' ? null : (parseInt(lastOldLineCount) || 0) - 1;\n const lastNewLine = lastLineFirstChar === '-' ? null : (parseInt(lastNewLineCount) || 0) - 1;\n\n return {\n lastOldLine,\n lastNewLine,\n gitDiff,\n };\n};\n\nreturn parseLastDiff($input.item.json.diff)\n"}, "typeVersion": 2}, {"name": "Post Discussions1", "type": "n8n-nodes-base.httpRequest", "position": [1280, 720], "parameters": {"url": "=https://gitlab.com/api/v4/projects/{{ $('Webhook').item.json[\"body\"][\"project_id\"] }}/merge_requests/{{ $('Webhook').item.json[\"body\"][\"merge_request\"][\"iid\"] }}/discussions", "method": "POST", "options": {}, "sendBody": true, "contentType": "multipart-form-data", "sendHeaders": true, "bodyParameters": {"parameters": [{"name": "body", "value": "={{ $('Basic LLM Chain1').item.json[\"text\"] }}"}, {"name": "position[position_type]", "value": "text"}, {"name": "position[old_path]", "value": "={{ $('Split Out1').item.json.old_path }}"}, {"name": "position[new_path]", "value": "={{ $('Split Out1').item.json.new_path }}"}, {"name": "position[start_sha]", "value": "={{ $('Get Changes1').item.json.diff_refs.start_sha }}"}, {"name": "position[head_sha]", "value": "={{ $('Get Changes1').item.json.diff_refs.head_sha }}"}, {"name": "position[base_sha]", "value": "={{ $('Get Changes1').item.json.diff_refs.base_sha }}"}, {"name": "position[new_line]", "value": "={{ $('Parse Last Diff Line1').item.json.lastNewLine || '' }}"}, {"name": "position[old_line]", "value": "={{ $('Parse Last Diff Line1').item.json.lastOldLine || '' }}"}]}, "headerParameters": {"parameters": [{"name": "PRIVATE-TOKEN"}]}}, "typeVersion": 4.1}, {"name": "Need Review1", "type": "n8n-nodes-base.if", "position": [-320, 760], "parameters": {"options": {}, "conditions": {"options": {"leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"operator": {"name": "filter.operator.equals", "type": "string", "operation": "equals"}, "leftValue": "={{ $json.body.object_attributes.note }}", "rightValue": "+0"}]}}, "typeVersion": 2}, {"name": "Basic LLM Chain1", "type": "@n8n/n8n-nodes-langchain.chainLlm", "position": [880, 720], "parameters": {"prompt": "=File path\uff1a{{ $('Skip File Change1').item.json.new_path }}\n\n```Original code\n {{ $json.originalCode }}\n```\nchange to\n```New code\n {{ $json.newCode }}\n```\nPlease review the code changes in this section:", "messages": {"messageValues": [{"message": "# Overview:\n You are a senior programming expert Bot, responsible for reviewing code changes and providing review recommendations.\n At the beginning of the suggestion, it is necessary to clearly make a decision to \"reject\" or \"accept\" the code change, and rate the change in the format \"Change Score: Actual Score\", with a score range of 0-100 points.\n Then, point out the existing problems in concise language and a stern tone.\n If you feel it is necessary, you can directly provide the modified content.\n Your review proposal must use rigorous Markdown format."}]}}, "typeVersion": 1.2}, {"name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [1200, 540], "parameters": {"content": "## Replace your gitlab URL and token \u2b07\ufe0f"}, "typeVersion": 1}], "pinData": {}, "connections": {"Code": {"main": [[{"node": "Basic LLM Chain1", "type": "main", "index": 0}]]}, "Webhook": {"main": [[{"node": "Need Review1", "type": "main", "index": 0}]]}, "Split Out1": {"main": [[{"node": "Skip File Change1", "type": "main", "index": 0}]]}, "Get Changes1": {"main": [[{"node": "Split Out1", "type": "main", "index": 0}]]}, "Need Review1": {"main": [[{"node": "Get Changes1", "type": "main", "index": 0}]]}, "Basic LLM Chain1": {"main": [[{"node": "Post Discussions1", "type": "main", "index": 0}]]}, "Skip File Change1": {"main": [[{"node": "Parse Last Diff Line1", "type": "main", "index": 0}]]}, "OpenAI Chat Model1": {"ai_languageModel": [[{"node": "Basic LLM Chain1", "type": "ai_languageModel", "index": 0}]]}, "Parse Last Diff Line1": {"main": [[{"node": "Code", "type": "main", "index": 0}]]}}}