Build policy documents from the quote response

{
  "id": "policy_forms",
  "key": "policy_forms",
  "step": "endorsements",
  "name": "Policy forms",
  "def": [],
  "items": [
    {
      "id": "telematics",
      "name": "Telematics fitted",
      "exp": "{{telematics}} == true",
      "value": "END_TELEMATICS",
      "description": "Telematics data condition applies."
    },
    {
      "id": "hazardous_goods",
      "name": "Carries hazardous goods",
      "exp": "{{hazardous_goods}} == true",
      "value": "END_HAZ_GOODS",
      "description": "ADR hazardous goods extension applies."
    },
    {
      "id": "young_drivers",
      "name": "Drivers under 25",
      "exp": "{{drivers_under_25}} > 0",
      "value": "END_YOUNG_DRIVER",
      "description": "Young driver excess and named-driver condition apply."
    },
    {
      "id": "vehicle_schedule",
      "name": "More than 20 vehicles",
      "exp": "{{vehicle_count}} > 20",
      "value": "SCHED_VEHICLES",
      "description": "Vehicles listed in a separate schedule."
    }
  ]
}

{
  "quote_reference": "<uuid>",
  "version_reference": "<uuid>",
  "result": 18420.64,
  "valid": true,
  "input": {
    "vehicle_count": 24,
    "telematics": true,
    "hazardous_goods": false,
    "drivers_under_25": 2,
    "region": "north_west"
  },
  "output": {
    "result": 18420.64,
    "valid": true,
    "risk_premium": 16447,
    "ipt": 1973.64,
    "compulsory_excess": 500
  },
  "refers": [],
  "exclusions": [],
  "endorsements": [
    {
      "step": "policy_forms",
      "name": "Telematics fitted",
      "exp": "{{telematics}} == true",
      "result": true,
      "value": "END_TELEMATICS",
      "description": "Telematics data condition applies."
    },
    {
      "step": "policy_forms",
      "name": "Drivers under 25",
      "exp": "{{drivers_under_25}} > 0",
      "result": true,
      "value": "END_YOUNG_DRIVER",
      "description": "Young driver excess and named-driver condition apply."
    },
    {
      "step": "policy_forms",
      "name": "More than 20 vehicles",
      "exp": "{{vehicle_count}} > 20",
      "result": true,
      "value": "SCHED_VEHICLES",
      "description": "Vehicles listed in a separate schedule."
    }
  ]
}

Three of the four rules fired. No hazardous goods are carried, so END_HAZ_GOODS is absent and its section won't be printed. See the API for the full response.

import Mustache from "mustache";

// The response from POST /quotes/:project_reference,
// or a saved quote from GET /quotes/:quote_reference
const quote = await res.json();

// Turn the form codes into flags the template can test
const forms = Object.fromEntries(
  quote.endorsements
    .filter((e) => e.step === "policy_forms")
    .map((e) => [e.value, true])
);

const html = Mustache.render(schedule, { ...quote, forms }, partials);

<h1>Fleet policy schedule</h1>
<p>Policy {{quote_reference}} · {{input.vehicle_count}} vehicles</p>

<table>
  <tr><td>Premium</td><td>£{{output.risk_premium}}</td></tr>
  <tr><td>Insurance Premium Tax</td><td>£{{output.ipt}}</td></tr>
  <tr><td>Total payable</td><td>£{{result}}</td></tr>
  <tr><td>Compulsory excess</td><td>£{{output.compulsory_excess}}</td></tr>
</table>

{{#forms.SCHED_VEHICLES}}{{> vehicle_schedule}}{{/forms.SCHED_VEHICLES}}
{{#forms.END_TELEMATICS}}{{> telematics_condition}}{{/forms.END_TELEMATICS}}
{{#forms.END_HAZ_GOODS}}{{> hazardous_goods}}{{/forms.END_HAZ_GOODS}}
{{#forms.END_YOUNG_DRIVER}}{{> young_driver}}{{/forms.END_YOUNG_DRIVER}}

<h2>Endorsements</h2>
{{#endorsements}}
  <p><strong>{{value}}</strong> {{name}}. {{description}}</p>
{{/endorsements}}

The syntax works in Mustache and Handlebars. Liquid, Jinja or a PDF generator that takes JSON work the same way.