{
  "name": "Workflow C – Knowledge Base Auto-Update",
  "description": "Triggered by Workflow B when solution is executed. Generates embeddings, inserts new KB entries, updates existing entry frequencies, and logs all operations.",
  "nodes": [
    {
      "id": "uuid-webhook-trigger-c-1",
      "name": "Webhook Trigger",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        250,
        200
      ],
      "parameters": {
        "path": "workflow-c",
        "httpMethod": "POST",
        "options": {}
      },
      "webhookId": "workflow-c-webhook-id"
    },
    {
      "id": "uuid-validate-payload-c-1",
      "name": "Validate Payload",
      "type": "n8n-nodes-base.if",
      "typeVersion": 1,
      "position": [
        450,
        200
      ],
      "parameters": {
        "conditions": {
          "number": [
            {
              "comparator": "exists",
              "value1": "={{ $json.ticket_id }}",
              "value2": ""
            },
            {
              "comparator": "exists",
              "value1": "={{ $json.ai_suggestion }}",
              "value2": ""
            }
          ]
        },
        "combineOperation": "AND"
      }
    },
    {
      "id": "uuid-parse-suggestion-c-1",
      "name": "Parse AI Suggestion",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        650,
        200
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "ticket_id",
              "value": "={{ $json.ticket_id }}",
              "type": "string"
            },
            {
              "name": "conversation_id",
              "value": "={{ $json.conversation_id }}",
              "type": "string"
            },
            {
              "name": "ai_suggestion_parsed",
              "value": "={{ typeof $json.ai_suggestion === 'string' ? JSON.parse($json.ai_suggestion) : $json.ai_suggestion }}",
              "type": "object"
            },
            {
              "name": "execution_type",
              "value": "={{ $json.execution_type }}",
              "type": "string"
            },
            {
              "name": "timestamp",
              "value": "={{ $json.timestamp || new Date().toISOString() }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-extract-kb-fields-c-1",
      "name": "Extract KB Fields",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        850,
        200
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "problem_text",
              "value": "={{ $json.ai_suggestion_parsed.problem_text || $json.ai_suggestion_parsed.problem || $json.subject || 'Unknown problem' }}",
              "type": "string"
            },
            {
              "name": "kategorie",
              "value": "={{ $json.ai_suggestion_parsed.kategorie || $json.ai_suggestion_parsed.category || 'Uncategorized' }}",
              "type": "string"
            },
            {
              "name": "lösung",
              "value": "={{ $json.ai_suggestion_parsed.lösung || $json.ai_suggestion_parsed.solution || 'No solution provided' }}",
              "type": "string"
            },
            {
              "name": "embedding_input",
              "value": "={{ $json.kategorie + ' | ' + $json.problem_text }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-litellm-embedding-c-1",
      "name": "LiteLLM Generate Embedding",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4,
      "position": [
        1050,
        200
      ],
      "parameters": {
        "authentication": "none",
        "url": "={{ $env.LITELLM_API_URL || 'http://litellm:4000' }}/v1/embeddings",
        "method": "POST",
        "headers": {
          "Content-Type": "application/json"
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ {\n  \"model\": \"text-embedding-3-small\",\n  \"input\": $json.embedding_input\n} }}"
      }
    },
    {
      "id": "uuid-extract-embedding-c-1",
      "name": "Extract Embedding Vector",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        1250,
        200
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "embedding_vector",
              "value": "={{ $json.data[0].embedding }}",
              "type": "object"
            },
            {
              "name": "embedding_dim",
              "value": "={{ $json.data[0].embedding.length }}",
              "type": "number"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-milvus-insert-c-1",
      "name": "Milvus Insert New KB Entry",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4,
      "position": [
        1450,
        200
      ],
      "parameters": {
        "authentication": "none",
        "url": "={{ $env.MILVUS_API_URL || 'http://milvus:19530' }}/v1/vector_db/knowledge_base/insert",
        "method": "POST",
        "headers": {
          "Content-Type": "application/json"
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ {\n  \"entries\": [\n    {\n      \"id\": \"kb_\" + $json.ticket_id + \"_\" + Date.now(),\n      \"problem_text\": $json.problem_text,\n      \"kategorie\": $json.kategorie,\n      \"lösung\": $json.lösung,\n      \"häufigkeit\": 1,\n      \"embedding\": $json.embedding_vector,\n      \"timestamp\": new Date().toISOString(),\n      \"ticket_id\": $json.ticket_id,\n      \"conversation_id\": $json.conversation_id,\n      \"source\": \"workflow-c\",\n      \"status\": \"ACTIVE\"\n    }\n  ]\n} }}"
      }
    },
    {
      "id": "uuid-extract-insert-result-c-1",
      "name": "Extract Insert Result",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        1650,
        200
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "kb_entry_id",
              "value": "={{ $json.ids ? $json.ids[0] : 'kb_' + $json.ticket_id + '_' + Date.now() }}",
              "type": "string"
            },
            {
              "name": "insert_status",
              "value": "={{ $json.status || 'SUCCESS' }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-milvus-query-similar-c-1",
      "name": "Milvus Query Similar Entries",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4,
      "position": [
        1850,
        200
      ],
      "parameters": {
        "authentication": "none",
        "url": "={{ $env.MILVUS_API_URL || 'http://milvus:19530' }}/v1/vector_db/knowledge_base/search",
        "method": "POST",
        "headers": {
          "Content-Type": "application/json"
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ {\n  \"vector\": $json.embedding_vector,\n  \"limit\": 5,\n  \"params\": {\n    \"nprobe\": 10\n  },\n  \"expr\": \"status == 'ACTIVE' AND kategorie == '\" + $json.kategorie + \"'\"\n} }}",
        "options": {
          "otherOptions": {
            "allowUnauthorizedCerts": true
          }
        }
      }
    },
    {
      "id": "uuid-filter-similar-high-score-c-1",
      "name": "Filter Similar > 0.85",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        2050,
        200
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "similar_entries",
              "value": "={{ ($json.results || []).filter(r => r.distance >= 0.85) }}",
              "type": "object"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-check-similar-entries-c-1",
      "name": "Check If Similar Exist",
      "type": "n8n-nodes-base.if",
      "typeVersion": 1,
      "position": [
        2250,
        200
      ],
      "parameters": {
        "conditions": {
          "number": [
            {
              "comparator": "gt",
              "value1": "={{ $json.similar_entries.length }}",
              "value2": "0"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-milvus-update-frequency-c-1",
      "name": "Milvus Update Frequency",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4,
      "position": [
        2450,
        100
      ],
      "parameters": {
        "authentication": "none",
        "url": "={{ $env.MILVUS_API_URL || 'http://milvus:19530' }}/v1/vector_db/knowledge_base/update",
        "method": "POST",
        "headers": {
          "Content-Type": "application/json"
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={{ {\n  \"updates\": $json.similar_entries.map(entry => ({\n    \"id\": entry.id,\n    \"häufigkeit\": (entry.häufigkeit || 1) + 1,\n    \"last_updated\": new Date().toISOString()\n  }))\n} }}"
      }
    },
    {
      "id": "uuid-extract-frequency-update-c-1",
      "name": "Extract Frequency Update Result",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        2650,
        100
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "frequency_update_count",
              "value": "={{ $json.modified_count || $json.similar_entries.length || 0 }}",
              "type": "number"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-postgres-insert-audit-c-1",
      "name": "PostgreSQL Insert Audit Log",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 2,
      "position": [
        2850,
        200
      ],
      "parameters": {
        "operation": "insert",
        "schema": "public",
        "table": "knowledge_base_updates",
        "columns": {
          "columns": [
            {
              "column": "ticket_id",
              "type": "string",
              "value": "={{ $json.ticket_id }}"
            },
            {
              "column": "conversation_id",
              "type": "string",
              "value": "={{ $json.conversation_id }}"
            },
            {
              "column": "problem_text",
              "type": "string",
              "value": "={{ $json.problem_text }}"
            },
            {
              "column": "kategorie",
              "type": "string",
              "value": "={{ $json.kategorie }}"
            },
            {
              "column": "lösung",
              "type": "string",
              "value": "={{ $json.lösung }}"
            },
            {
              "column": "kb_entry_id",
              "type": "string",
              "value": "={{ $json.kb_entry_id }}"
            },
            {
              "column": "embedding_dim",
              "type": "number",
              "value": "={{ $json.embedding_dim }}"
            },
            {
              "column": "frequency_updates_count",
              "type": "number",
              "value": "={{ $json.frequency_update_count || 0 }}"
            },
            {
              "column": "status",
              "type": "string",
              "value": "EXECUTED"
            },
            {
              "column": "source",
              "type": "string",
              "value": "workflow-c"
            },
            {
              "column": "created_at",
              "type": "string",
              "value": "={{ new Date().toISOString() }}"
            },
            {
              "column": "updated_at",
              "type": "string",
              "value": "={{ new Date().toISOString() }}"
            }
          ]
        }
      },
      "credentials": {
        "postgres": "PostgreSQL Connection"
      }
    },
    {
      "id": "uuid-success-response-c-1",
      "name": "Success Response",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        3050,
        200
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "success",
              "value": true,
              "type": "boolean"
            },
            {
              "name": "message",
              "value": "Knowledge base entry created and frequencies updated successfully",
              "type": "string"
            },
            {
              "name": "kb_entry_id",
              "value": "={{ $json.kb_entry_id }}",
              "type": "string"
            },
            {
              "name": "similar_entries_updated",
              "value": "={{ $json.frequency_update_count || 0 }}",
              "type": "number"
            },
            {
              "name": "timestamp",
              "value": "={{ new Date().toISOString() }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-skip-frequency-update-c-1",
      "name": "Skip Frequency Update",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        2450,
        350
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "frequency_update_count",
              "value": "0",
              "type": "number"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-merge-frequency-result-c-1",
      "name": "Merge Frequency Result",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        2650,
        250
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "frequency_update_count",
              "value": "={{ $json.frequency_update_count || 0 }}",
              "type": "number"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-error-log-embedding-c-1",
      "name": "Error: Embedding Generation Failed",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        1050,
        500
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "error_type",
              "value": "EMBEDDING_GENERATION_FAILED",
              "type": "string"
            },
            {
              "name": "error_message",
              "value": "={{ $error.message }}",
              "type": "string"
            },
            {
              "name": "ticket_id",
              "value": "={{ $json.ticket_id }}",
              "type": "string"
            },
            {
              "name": "timestamp",
              "value": "={{ new Date().toISOString() }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-error-log-milvus-c-1",
      "name": "Error: Milvus Insert Failed",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        1450,
        500
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "error_type",
              "value": "MILVUS_INSERT_FAILED",
              "type": "string"
            },
            {
              "name": "error_message",
              "value": "={{ $error.message }}",
              "type": "string"
            },
            {
              "name": "ticket_id",
              "value": "={{ $json.ticket_id }}",
              "type": "string"
            },
            {
              "name": "timestamp",
              "value": "={{ new Date().toISOString() }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-error-log-postgres-c-1",
      "name": "Error: PostgreSQL Audit Log Failed",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        2850,
        500
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "error_type",
              "value": "POSTGRES_AUDIT_FAILED",
              "type": "string"
            },
            {
              "name": "error_message",
              "value": "={{ $error.message }}",
              "type": "string"
            },
            {
              "name": "ticket_id",
              "value": "={{ $json.ticket_id }}",
              "type": "string"
            },
            {
              "name": "timestamp",
              "value": "={{ new Date().toISOString() }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-postgres-error-handler-c-1",
      "name": "PostgreSQL Insert Error Handler",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 2,
      "position": [
        3050,
        500
      ],
      "parameters": {
        "operation": "insert",
        "schema": "public",
        "table": "knowledge_base_errors",
        "columns": {
          "columns": [
            {
              "column": "ticket_id",
              "type": "string",
              "value": "={{ $json.ticket_id }}"
            },
            {
              "column": "error_type",
              "type": "string",
              "value": "={{ $json.error_type }}"
            },
            {
              "column": "error_message",
              "type": "string",
              "value": "={{ $json.error_message }}"
            },
            {
              "column": "workflow",
              "type": "string",
              "value": "workflow-c"
            },
            {
              "column": "created_at",
              "type": "string",
              "value": "={{ new Date().toISOString() }}"
            }
          ]
        }
      },
      "credentials": {
        "postgres": "PostgreSQL Connection"
      }
    },
    {
      "id": "uuid-error-response-c-1",
      "name": "Error Response",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        3250,
        500
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "success",
              "value": false,
              "type": "boolean"
            },
            {
              "name": "error_type",
              "value": "={{ $json.error_type }}",
              "type": "string"
            },
            {
              "name": "error_message",
              "value": "={{ $json.error_message }}",
              "type": "string"
            },
            {
              "name": "ticket_id",
              "value": "={{ $json.ticket_id }}",
              "type": "string"
            },
            {
              "name": "timestamp",
              "value": "={{ new Date().toISOString() }}",
              "type": "string"
            }
          ]
        }
      }
    },
    {
      "id": "uuid-validation-failed-c-1",
      "name": "Validation Failed",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        450,
        500
      ],
      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "name": "success",
              "value": false,
              "type": "boolean"
            },
            {
              "name": "error_type",
              "value": "VALIDATION_FAILED",
              "type": "string"
            },
            {
              "name": "error_message",
              "value": "Missing required fields: ticket_id or ai_suggestion",
              "type": "string"
            },
            {
              "name": "timestamp",
              "value": "={{ new Date().toISOString() }}",
              "type": "string"
            }
          ]
        }
      }
    }
  ],
  "connections": {
    "Webhook Trigger": {
      "main": [
        [
          {
            "node": "Validate Payload",
            "index": 0
          }
        ]
      ]
    },
    "Validate Payload": {
      "main": [
        [
          {
            "node": "Parse AI Suggestion",
            "index": 0
          }
        ],
        [
          {
            "node": "Validation Failed",
            "index": 0
          }
        ]
      ]
    },
    "Parse AI Suggestion": {
      "main": [
        [
          {
            "node": "Extract KB Fields",
            "index": 0
          }
        ]
      ]
    },
    "Extract KB Fields": {
      "main": [
        [
          {
            "node": "LiteLLM Generate Embedding",
            "index": 0
          }
        ]
      ]
    },
    "LiteLLM Generate Embedding": {
      "main": [
        [
          {
            "node": "Extract Embedding Vector",
            "index": 0
          }
        ],
        [
          {
            "node": "Error: Embedding Generation Failed",
            "index": 0
          }
        ]
      ]
    },
    "Extract Embedding Vector": {
      "main": [
        [
          {
            "node": "Milvus Insert New KB Entry",
            "index": 0
          }
        ]
      ]
    },
    "Milvus Insert New KB Entry": {
      "main": [
        [
          {
            "node": "Extract Insert Result",
            "index": 0
          }
        ],
        [
          {
            "node": "Error: Milvus Insert Failed",
            "index": 0
          }
        ]
      ]
    },
    "Extract Insert Result": {
      "main": [
        [
          {
            "node": "Milvus Query Similar Entries",
            "index": 0
          }
        ]
      ]
    },
    "Milvus Query Similar Entries": {
      "main": [
        [
          {
            "node": "Filter Similar > 0.85",
            "index": 0
          }
        ]
      ]
    },
    "Filter Similar > 0.85": {
      "main": [
        [
          {
            "node": "Check If Similar Exist",
            "index": 0
          }
        ]
      ]
    },
    "Check If Similar Exist": {
      "main": [
        [
          {
            "node": "Milvus Update Frequency",
            "index": 0
          }
        ],
        [
          {
            "node": "Skip Frequency Update",
            "index": 0
          }
        ]
      ]
    },
    "Milvus Update Frequency": {
      "main": [
        [
          {
            "node": "Extract Frequency Update Result",
            "index": 0
          }
        ]
      ]
    },
    "Extract Frequency Update Result": {
      "main": [
        [
          {
            "node": "Merge Frequency Result",
            "index": 0
          }
        ]
      ]
    },
    "Skip Frequency Update": {
      "main": [
        [
          {
            "node": "Merge Frequency Result",
            "index": 0
          }
        ]
      ]
    },
    "Merge Frequency Result": {
      "main": [
        [
          {
            "node": "PostgreSQL Insert Audit Log",
            "index": 0
          }
        ]
      ]
    },
    "PostgreSQL Insert Audit Log": {
      "main": [
        [
          {
            "node": "Success Response",
            "index": 0
          }
        ],
        [
          {
            "node": "Error: PostgreSQL Audit Log Failed",
            "index": 0
          }
        ]
      ]
    },
    "Success Response": {
      "main": [
        []
      ]
    },
    "Error: Embedding Generation Failed": {
      "main": [
        [
          {
            "node": "PostgreSQL Insert Error Handler",
            "index": 0
          }
        ]
      ]
    },
    "Error: Milvus Insert Failed": {
      "main": [
        [
          {
            "node": "PostgreSQL Insert Error Handler",
            "index": 0
          }
        ]
      ]
    },
    "Error: PostgreSQL Audit Log Failed": {
      "main": [
        [
          {
            "node": "PostgreSQL Insert Error Handler",
            "index": 0
          }
        ]
      ]
    },
    "PostgreSQL Insert Error Handler": {
      "main": [
        [
          {
            "node": "Error Response",
            "index": 0
          }
        ]
      ]
    },
    "Error Response": {
      "main": [
        []
      ]
    },
    "Validation Failed": {
      "main": [
        []
      ]
    }
  }
}