{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Fixture Invoicing Data Model",
  "description": "Tables of the fixture-invoicing app — all data is obviously placeholder.",
  "version": "0.1.0",
  "meta": {
    "purpose": "Browse and QA fixture data while iterating on soleprint tools.",
    "modes": ["sql"]
  },
  "definitions": {
    "Customer": {
      "type": "object",
      "description": "A fixture customer.",
      "table": "customer",
      "properties": {
        "id":         {"type": "integer", "column": "id"},
        "name":       {"type": "string",  "column": "name"},
        "email":      {"type": "string",  "column": "email"},
        "created_at": {"type": "string",  "format": "date-time", "column": "created_at"}
      }
    },
    "Invoice": {
      "type": "object",
      "description": "An invoice issued to a fixture customer.",
      "table": "invoice",
      "properties": {
        "id":          {"type": "integer", "column": "id"},
        "number":      {"type": "string",  "column": "number"},
        "customer_id": {"type": "integer", "column": "customer_id", "fk": "Customer"},
        "issued_at":   {"type": "string",  "format": "date-time", "column": "issued_at"},
        "due_at":      {"type": "string",  "format": "date-time", "column": "due_at"},
        "status":      {"type": "string",  "column": "status"}
      }
    },
    "LineItem": {
      "type": "object",
      "description": "A billable line on an invoice.",
      "table": "line_item",
      "properties": {
        "id":          {"type": "integer", "column": "id"},
        "invoice_id":  {"type": "integer", "column": "invoice_id", "fk": "Invoice"},
        "description": {"type": "string",  "column": "description"},
        "quantity":    {"type": "integer", "column": "quantity"},
        "unit_price":  {"type": "number",  "column": "unit_price"}
      }
    },
    "Payment": {
      "type": "object",
      "description": "A payment recorded against an invoice.",
      "table": "payment",
      "properties": {
        "id":         {"type": "integer", "column": "id"},
        "invoice_id": {"type": "integer", "column": "invoice_id", "fk": "Invoice"},
        "amount":     {"type": "number",  "column": "amount"},
        "method":     {"type": "string",  "column": "method"},
        "paid_at":    {"type": "string",  "format": "date-time", "column": "paid_at"}
      }
    }
  }
}