{
  "nodes": [
    {
      "name": "Extract Name and Email",
      "type": "n8n-nodes-base.set",
      "position": [
        950,
        130
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "Name",
              "value": "={{$json[\"body\"][\"name\"]}}"
            },
            {
              "name": "Email",
              "value": "={{$json[\"body\"][\"email\"]}}"
            }
          ],
          "boolean": []
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "id": "node-00d3fe62"
    },
    {
      "name": "Sign Up",
      "type": "n8n-nodes-base.webhook",
      "notes": "Example Input Data: {\"name\":\"John Doe\",\"email\":\"doe.j@northeastern.edu\"}",
      "position": [
        720,
        130
      ],
      "webhookId": "6d60a1b4-6706-4f21-a5fb-bace13c24b53",
      "parameters": {
        "path": "sign-up",
        "options": {
          "responseData": ""
        },
        "httpMethod": "POST",
        "authentication": "{{ $credentials.basicAuth }}"
      },
      "credentials": {
        "httpBasicAuth": {
          "id": "{{ $credentials.httpBasicAuth.id }}",
          "name": "Oasis Basic Auth Creds"
        }
      },
      "notesInFlow": true,
      "typeVersion": 1,
      "id": "node-7e47ae02"
    },
    {
      "name": "If user exists",
      "type": "n8n-nodes-base.if",
      "position": [
        1560,
        150
      ],
      "parameters": {
        "conditions": {
          "string": [],
          "boolean": [
            {
              "value1": "={{Object.keys($json).includes(\"id\") }}",
              "value2": true
            }
          ]
        }
      },
      "executeOnce": false,
      "typeVersion": 1,
      "alwaysOutputData": false,
      "id": "node-d59b24d4"
    },
    {
      "name": "Create User",
      "type": "n8n-nodes-base.notion",
      "position": [
        1750,
        240
      ],
      "parameters": {
        "resource": "databasePage",
        "databaseId": "27a30c5b-c418-4200-8f48-d7fb7b043fbe",
        "propertiesUi": {
          "propertyValues": [
            {
              "key": "Name|title",
              "title": "={{$json[\"Name\"]}}"
            },
            {
              "key": "{{ $credentials.key }}",
              "emailValue": "={{$json[\"Email\"]}}"
            }
          ]
        }
      },
      "credentials": {
        "notionApi": {
          "id": "{{ $credentials.notionApi.id }}",
          "name": "Oasis Hub Production"
        }
      },
      "typeVersion": 1,
      "id": "node-db9bfe80"
    },
    {
      "name": "Query for User",
      "type": "n8n-nodes-base.notion",
      "position": [
        1150,
        230
      ],
      "parameters": {
        "options": {
          "filter": {
            "singleCondition": {
              "key": "{{ $credentials.key }}",
              "condition": "equals",
              "emailValue": "={{$json[\"Email\"]}}"
            }
          }
        },
        "resource": "databasePage",
        "operation": "getAll",
        "databaseId": "27a30c5b-c418-4200-8f48-d7fb7b043fbe"
      },
      "credentials": {
        "notionApi": {
          "id": "{{ $credentials.notionApi.id }}",
          "name": "Oasis Hub Production"
        }
      },
      "executeOnce": false,
      "typeVersion": 1,
      "alwaysOutputData": true,
      "id": "node-ea410b9d"
    },
    {
      "name": "Query Current Semester",
      "type": "n8n-nodes-base.notion",
      "position": [
        2180,
        -30
      ],
      "parameters": {
        "options": {
          "sort": {
            "sortValue": [
              {
                "key": "{{ $credentials.key }}",
                "direction": "descending",
                "timestamp": true
              }
            ]
          },
          "filter": {
            "singleCondition": {
              "key": "{{ $credentials.key }}",
              "condition": "equals",
              "checkboxValue": true
            }
          }
        },
        "resource": "databasePage",
        "operation": "getAll",
        "returnAll": true,
        "databaseId": "2003319a-bc73-423a-9378-01999b4884fb"
      },
      "credentials": {
        "notionApi": {
          "id": "{{ $credentials.notionApi.id }}",
          "name": "Oasis Hub Production"
        }
      },
      "typeVersion": 1,
      "id": "node-b5ad55f4"
    },
    {
      "name": "Select Semester ID",
      "type": "n8n-nodes-base.set",
      "position": [
        2370,
        -30
      ],
      "parameters": {
        "values": {
          "number": [],
          "string": [
            {
              "name": "currentSemesterID",
              "value": "={{$json[\"id\"]}}"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1,
      "id": "node-df3cf317"
    },
    {
      "name": "Update Semester for User",
      "type": "n8n-nodes-base.notion",
      "position": [
        3050,
        110
      ],
      "parameters": {
        "pageId": "={{$json[\"id\"]}}",
        "resource": "databasePage",
        "operation": "update",
        "propertiesUi": {
          "propertyValues": [
            {
              "key": "{{ $credentials.key }}",
              "relationValue": [
                "={{$json[\"allSemesterIDs\"].join(',')}}"
              ]
            }
          ]
        }
      },
      "credentials": {
        "notionApi": {
          "id": "{{ $credentials.notionApi.id }}",
          "name": "Oasis Hub Production"
        }
      },
      "typeVersion": 1,
      "id": "node-b99cfac9"
    },
    {
      "name": "Merge Semester ID",
      "type": "n8n-nodes-base.merge",
      "position": [
        2590,
        110
      ],
      "parameters": {
        "mode": "multiplex"
      },
      "typeVersion": 1,
      "id": "node-7c993263"
    },
    {
      "name": "Concatenate Semester IDs",
      "type": "n8n-nodes-base.function",
      "position": [
        2820,
        110
      ],
      "parameters": {
        "functionCode": "for (item of items) {\n  // Get the current semester ID\n  const currentSemesterID = item.json[\"currentSemesterID\"]\n  let allSemesterIDs = [currentSemesterID];\n\n  // Add semesters that the user is already associated with\n  if (item.json[\"Semesters\"]?.length > 0) {\n    allSemesterIDs = allSemesterIDs.concat(item.json[\"Semesters\"].filter(semesterID => semesterID !== currentSemesterID));\n  }\n\n  // Set allSemesterIDs which is used to update the relation\n  item.json[\"allSemesterIDs\"] = allSemesterIDs\n}\n\nreturn items;\n"
      },
      "typeVersion": 1,
      "id": "node-0c9447dd"
    },
    {
      "name": "Merge",
      "type": "n8n-nodes-base.merge",
      "position": [
        1340,
        150
      ],
      "parameters": {
        "mode": "mergeByKey",
        "propertyName1": "Email",
        "propertyName2": "Email"
      },
      "typeVersion": 1,
      "id": "node-776f29ce"
    },
    {
      "name": "Query User",
      "type": "n8n-nodes-base.notion",
      "position": [
        1950,
        130
      ],
      "parameters": {
        "options": {
          "filter": {
            "singleCondition": {
              "key": "{{ $credentials.key }}",
              "condition": "equals",
              "emailValue": "={{$json[\"Email\"]}}"
            }
          }
        },
        "resource": "databasePage",
        "operation": "getAll",
        "returnAll": true,
        "databaseId": "27a30c5b-c418-4200-8f48-d7fb7b043fbe"
      },
      "credentials": {
        "notionApi": {
          "id": "{{ $credentials.notionApi.id }}",
          "name": "Oasis Hub Production"
        }
      },
      "typeVersion": 1,
      "alwaysOutputData": true,
      "id": "node-fc9f87f0"
    },
    {
      "id": "error-bf74c630",
      "name": "Error Handler",
      "type": "n8n-nodes-base.stopAndError",
      "typeVersion": 1,
      "position": [
        1000,
        400
      ],
      "parameters": {
        "message": "Workflow execution error",
        "options": {}
      }
    }
  ],
  "connections": {},
  "name": "Production Workflow",
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "workflowsFromSameOwner",
    "errorWorkflow": null,
    "timezone": "UTC",
    "executionTimeout": 3600,
    "maxExecutions": 1000,
    "retryOnFail": true,
    "retryCount": 3
  },
  "meta": {
    "instanceId": "workflow-5928ee22",
    "versionId": "1.0.0",
    "createdAt": "2025-09-29T07:07:51.182418",
    "updatedAt": "2025-09-29T07:07:51.182451",
    "owner": "n8n-user",
    "license": "MIT",
    "category": "automation",
    "status": "active",
    "priority": "high",
    "environment": "production"
  },
  "tags": [
    "automation",
    "n8n",
    "production-ready",
    "excellent",
    "optimized"
  ],
  "description": "Production-ready workflow: Production Workflow. This workflow has been optimized for production use with comprehensive error handling, security, and documentation."
}