{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://ptpge.org/v1/schemas/quote/1.schema.json",
  "title": "PTPGE quote/1",
  "description": "A printer's answer to one request: the same configuration and the same ptpge-cfs/1 fingerprint it was asked for, a quantity, a price in one currency, delivery terms and a validity period, addressed to the buyer who asked. Together with the request it is one deal; its acceptance is the event an implementation acts on. The fingerprint is what ties the two documents together without a system in between — a quote whose spec fingerprint differs from the request's is an offer for something else. Not published at a known path — it has a recipient. Licence of the schema: CC BY 4.0.",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema", "schemaVersion", "id", "issued", "validUntil", "vendor", "inReplyTo", "configuration", "fingerprint", "quantity", "price"],
  "properties": {
    "schema":        { "const": "https://ptpge.org/v1/schemas/quote/1" },
    "schemaVersion": { "const": 1 },
    "id":            { "type": "string", "minLength": 1, "maxLength": 120, "description": "The printer's reference for this quote." },
    "issued":        { "type": "string", "format": "date-time" },
    "validUntil":    { "type": "string", "format": "date", "description": "The last day the quote may be accepted." },
    "vendor":        { "$ref": "#/$defs/vendorUri", "description": "The printer's register identity — the party that will deliver." },
    "inReplyTo":     {
      "type": "object", "additionalProperties": false, "required": ["fingerprint"],
      "properties": {
        "request":     { "type": "string", "maxLength": 120, "description": "The request's id, as the buyer gave it." },
        "fingerprint": { "$ref": "#/$defs/sha256", "description": "The request's spec fingerprint. Must equal fingerprint.spec below." }
      }
    },
    "configuration": { "$ref": "https://ptpge.org/v1/schemas/request/1.schema.json#/$defs/configuration" },
    "fingerprint":   {
      "type": "object", "additionalProperties": false, "required": ["algorithm", "spec", "request"],
      "description": "The identities this quote answers and mints (ptpge-cfs/1, SD-0108): spec and request repeat the request's; offer = request plus variables/order/vendor (this printer's identity) — one per vendor, computed by the printer, kept by the two parties.",
      "properties": {
        "algorithm": { "const": "ptpge-cfs/1" },
        "spec":      { "$ref": "#/$defs/sha256" },
        "request":   { "$ref": "#/$defs/sha256" },
        "offer":     { "$ref": "#/$defs/sha256" }
      }
    },
    "quantity":      { "type": "integer", "minimum": 1 },
    "price":         { "$ref": "#/$defs/price" },
    "alternatives":  { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": ["quantity", "price"], "properties": { "quantity": { "type": "integer", "minimum": 1 }, "price": { "$ref": "#/$defs/price" } } }, "description": "The same configuration at other run lengths." },
    "leadTimeWorkingDays": { "type": "integer", "minimum": 0, "description": "From approved artwork to dispatch." },
    "delivery":      { "$ref": "https://ptpge.org/v1/schemas/request/1.schema.json#/$defs/delivery" },
    "conditions":    { "type": "string", "maxLength": 2000, "description": "What the price assumes: artwork state, proofing, payment terms." },
    "note":          { "type": "string", "maxLength": 2000 },
    "generatedBy":   { "$ref": "https://ptpge.org/v1/schemas/request/1.schema.json#/$defs/generatedBy" }
  },

  "$defs": {
    "vendorUri": { "type": "string", "pattern": "^https://ptpge\\.org/v1/vendors/[a-z0-9-]+$" },
    "sha256":    { "type": "string", "pattern": "^[a-f0-9]{64}$" },
    "price": {
      "type": "object", "additionalProperties": false, "required": ["currency", "total"],
      "description": "One currency, amounts as decimal numbers excluding VAT unless vatIncluded says otherwise.",
      "properties": {
        "currency":    { "type": "string", "pattern": "^[A-Z]{3}$", "description": "ISO 4217." },
        "total":       { "type": "number", "minimum": 0 },
        "unit":        { "type": "number", "minimum": 0 },
        "setup":       { "type": "number", "minimum": 0 },
        "shipping":    { "type": "number", "minimum": 0, "description": "Included in total when present." },
        "vatRate":     { "type": "number", "minimum": 0, "maximum": 100 },
        "vatIncluded": { "type": "boolean", "default": false }
      }
    }
  }
}