{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://recipes.uuard.com/schemas/v2/common.schema.json",
  "title": "Recipe Book common types",
  "$defs": {
    "id": {
      "type": "string",
      "pattern": "^[a-z0-9]+(?:_[a-z0-9]+)*$"
    },
    "nonEmptyString": { "type": "string", "minLength": 1 },
    "schemaVersion": { "const": 2 },
    "date": { "type": "string", "format": "date" },
    "dateTime": { "type": "string", "format": "date-time" },
    "decimal": { "type": "number", "minimum": 0 },
    "positiveDecimal": { "type": "number", "exclusiveMinimum": 0 },
    "localizedText": {
      "type": "object",
      "required": ["text"],
      "additionalProperties": false,
      "properties": {
        "text": { "$ref": "#/$defs/nonEmptyString" },
        "language": { "type": "string", "pattern": "^[a-z]{2,3}(?:-[A-Z]{2})?$" }
      }
    },
    "amount": {
      "type": "object",
      "required": ["quantity", "unit_id"],
      "additionalProperties": false,
      "properties": {
        "quantity": { "$ref": "#/$defs/decimal" },
        "unit_id": { "$ref": "#/$defs/id" },
        "quantity_max": { "$ref": "#/$defs/decimal" },
        "display": { "$ref": "#/$defs/nonEmptyString" }
      }
    },
    "sourceReference": {
      "type": "object",
      "required": ["source_type", "reviewed"],
      "additionalProperties": false,
      "properties": {
        "source_type": {
          "type": "string",
          "enum": ["usda_fdc", "manufacturer", "supplier", "publication", "laboratory", "observation", "manual", "calculated"]
        },
        "external_id": { "$ref": "#/$defs/nonEmptyString" },
        "url": { "type": "string", "format": "uri" },
        "title": { "$ref": "#/$defs/nonEmptyString" },
        "publisher": { "$ref": "#/$defs/nonEmptyString" },
        "retrieved_at": { "$ref": "#/$defs/date" },
        "effective_at": { "$ref": "#/$defs/date" },
        "reviewed": { "type": "boolean" },
        "reviewed_at": { "$ref": "#/$defs/date" },
        "notes": { "type": "string" }
      },
      "allOf": [
        {
          "if": { "properties": { "source_type": { "const": "usda_fdc" } }, "required": ["source_type"] },
          "then": {
            "required": ["external_id", "title", "retrieved_at"],
            "properties": { "external_id": { "pattern": "^[1-9][0-9]*$" } }
          }
        }
      ]
    },
    "media": {
      "type": "object",
      "required": ["type", "uri"],
      "additionalProperties": false,
      "properties": {
        "type": { "type": "string", "enum": ["image", "video", "audio", "document"] },
        "uri": { "$ref": "#/$defs/nonEmptyString" },
        "alt": { "type": "string" },
        "caption": { "type": "string" },
        "credit": { "type": "string" }
      }
    }
  }
}