{
  "name": "Works Better — invoice preparation starter (simulation)",
  "nodes": [
    {
      "parameters": {},
      "id": "manual-start",
      "name": "Try the example",
      "type": "n8n-nodes-base.manualTrigger",
      "typeVersion": 1,
      "position": [
        0,
        0
      ]
    },
    {
      "parameters": {
        "jsCode": "return [{json:{hours:12,rate:150,materials:600,variation:180,approved:false}}];"
      },
      "id": "sample-input",
      "name": "Sample job input",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        230,
        0
      ]
    },
    {
      "parameters": {
        "jsCode": "const data = $input.first().json;\nfunction value(key, min, max) {\n  const n = Number(data[key]);\n  if (data[key] === '' || !Number.isFinite(n) || n < min || n > max) throw new Error('Invalid ' + key);\n  return n;\n}\nreturn [{json: {\n  hours: value('hours', 0, 1000),\n  rate: value('rate', 0, 10000),\n  materials: value('materials', 0, 1000000),\n  variation: value('variation', 0, 1000000),\n  approved: data.approved === true\n}}];"
      },
      "id": "validate-input",
      "name": "Validate job details",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        460,
        0
      ]
    },
    {
      "parameters": {
        "jsCode": "const input = $input.first().json;\nconst lines = [\n  {description:'Labour', quantity:input.hours, rate:input.rate, amount:Math.round(input.hours * input.rate * 100)/100},\n  {description:'Materials', quantity:1, rate:input.materials, amount:input.materials}\n];\nif (input.approved && input.variation > 0) lines.push({description:'Approved extra work',quantity:1,rate:input.variation,amount:input.variation});\nreturn [{json:{\n  kind:'invoice', mode:'simulation', job:'WB-1042', lines,\n  subtotal:Math.round(lines.reduce((sum,line)=>sum+line.amount,0)*100)/100,\n  needsDecision:input.variation > 0 && !input.approved,\n  excluded:input.approved ? 0 : input.variation,\n  approved:input.approved, externalAction:false\n}}];"
      },
      "id": "calculate-draft",
      "name": "Prepare draft — no external write",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        690,
        0
      ]
    },
    {
      "parameters": {},
      "id": "inspect-output",
      "name": "Inspect the result",
      "type": "n8n-nodes-base.noOp",
      "typeVersion": 1,
      "position": [
        920,
        0
      ]
    },
    {
      "parameters": {
        "content": "## Works Better · starter, not a production integration\nRun manually. Edit Sample job input and compare the result.\n\nThe browser demo uses the same calculations. No AI, Xero, Simpro or email connection is included. approved:true is a sample input, not a real approval mechanism.\n\nNext: replace sample inputs with an authenticated trigger and authorised job/rate sources. Add a validated AI extraction step and a separate server-side human approval checkpoint before enabling any external write. Keep OpenRouter credentials on the server and use free models only.",
        "height": 300,
        "width": 1080
      },
      "id": "context-note",
      "name": "Read before connecting",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -30,
        220
      ]
    }
  ],
  "connections": {
    "Try the example": {
      "main": [
        [
          {
            "node": "Sample job input",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Sample job input": {
      "main": [
        [
          {
            "node": "Validate job details",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Validate job details": {
      "main": [
        [
          {
            "node": "Prepare draft — no external write",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Prepare draft — no external write": {
      "main": [
        [
          {
            "node": "Inspect the result",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "active": false,
  "pinData": {},
  "tags": []
}