{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "http://mapeo.world/schemas/filter.json",
  "title": "Filter",
  "description": "A filter is a saved view of data in the Mapeo database, filtered by tag or date. E.g. a filter could define observations between two dates, or only observations with the tag `public=true`",
  "type": "object",
  "properties": {
    "id": {
      "description": "Unique value that identifies this element",
      "type": "string"
    },
    "version": {
      "description": "Unique value that identifies this particular version of this element",
      "type": "string"
    },
    "created_at": {
      "description": "RFC3339-formatted datetime of when the first version of the element was created",
      "type": "string",
      "format": "date-time"
    },
    "timestamp": {
      "description": "RFC3339-formatted datetime of when this version of the element was created",
      "type": "string",
      "format": "date-time"
    },
    "userId": {
      "description": "ID of the user who edited/created this record",
      "type": "string"
    },
    "deviceId": {
      "description": "ID of the device that made this edit",
      "type": "string"
    },
    "type": {
      "description": "Must be `filter`",
      "type": "string",
      "enum": ["filter"]
    },
    "links": {
      "description": "Version ids of the previous document versions this one is replacing",
      "type": "array",
      "uniqueItems": true,
      "items": {
        "type": "string"
      }
    },
    "schemaVersion": {
      "description": "Version of this schema. Should increment for breaking changes to the schema",
      "type": "number",
      "minimum": 1,
      "enum": [1]
    },
    "filter": {
      "type": "array",
      "description": "A filter expression as defined in https://docs.mapbox.com/mapbox-gl-js/style-spec/#other-filter but where the special fields `$type` refers to the mapeo type (observation, node, way etc) and `$id` is the mapeo id."
    },
    "name": {
      "type": "string",
      "description": "A human-readable name for this filter."
    }
  },
  "required": ["id", "version", "created_at", "type", "schemaVersion", "filter", "name"]
}