{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://plugins.geolibre.app/schemas/plugin-manifest.schema.json",
  "title": "GeoLibre external plugin manifest",
  "description": "plugins/<dir>/plugin.json. Mirrors the checks GeoLibre's external plugin loader applies.",
  "type": "object",
  "required": ["id", "name", "version", "entry"],
  "properties": {
    "id": {
      "$ref": "#/$defs/trimmedString"
    },
    "name": {
      "$ref": "#/$defs/trimmedString"
    },
    "version": {
      "$ref": "#/$defs/trimmedString"
    },
    "entry": {
      "description": "Self-contained ES module, relative to this manifest.",
      "type": "string",
      "$ref": "#/$defs/trimmedString",
      "pattern": "\\.m?js$",
      "$comment": "must be a .js or .mjs file"
    },
    "style": {
      "description": "Optional global stylesheet, relative to this manifest.",
      "type": "string",
      "pattern": "\\.css$",
      "$comment": "must be a .css file"
    },
    "description": {
      "type": "string"
    },
    "author": {
      "type": "string"
    },
    "homepage": {
      "type": "string",
      "pattern": "^https?://\\S+$",
      "$comment": "must be an http:// or https:// URL"
    },
    "engines": {
      "description": "Map renderers the plugin supports.",
      "type": "array",
      "uniqueItems": true,
      "items": {
        "enum": ["maplibre", "cesium", "mapbox", "arcgis"]
      }
    }
  },
  "not": {
    "$comment": "must not set activeByDefault (external plugins are never active by default)",
    "type": "object",
    "required": ["activeByDefault"]
  },
  "$defs": {
    "trimmedString": {
      "type": "string",
      "pattern": "^\\S(?:[\\s\\S]*\\S)?$",
      "$comment": "must not be empty or start or end with whitespace"
    }
  }
}