n8n-workflows/workflows/ChatGPT Automatic Code Review in Gitlab MR.json

{
  "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
          }
        ]
      ]
    }
  }
}