{
	"$schema": "http://json-schema.org/draft-07/schema#",
	"$id":     "schema/cdrom.json",

	"title": "Root",
	"type":  "object",

	"required": [ "entries" ],

	"properties": {
		"identifiers": {
			"title": "ISO9660 identifier strings",
			"type":  "object",

			"additionalProperties": false,

			"properties": {
				"system": {
					"title": "System identifier",
					"type":  "string"
				},
				"volume": {
					"title": "Volume identifier",
					"type":  "string"
				},
				"volumeSet": {
					"title": "Volume set identifier",
					"type":  "string"
				},
				"publisher": {
					"title": "Publisher identifier",
					"type":  "string"
				},
				"dataPreparer": {
					"title": "Data preparer identifier",
					"type":  "string"
				},
				"application": {
					"title": "Application identifier",
					"type":  "string"
				},
				"copyright": {
					"title": "Copyright file identifier",
					"type":  "string"
				},
				"abstract": {
					"title": "Abstract file identifier",
					"type":  "string"
				},
				"bibliographic": {
					"title": "Bibliographic file identifier",
					"type":  "string"
				}
			}
		},

		"entries": {
			"title": "File and directory entries",
			"type":  "array",

			"uniqueItems": true,
			"items": {
				"title": "Entry object",
				"type":  "object",

				"required": [ "type", "name" ],

				"properties": {
					"type": {
						"title":       "Entry type",
						"description": "Must be 'empty' (empty or zerofilled file), 'file', 'directory', 'fileAlias' or 'directoryAlias' (hard link to another entry).",
						"type":        "string",

						"enum": [
							"empty",
							"file",
							"directory",
							"fileAlias",
							"directoryAlias"
						]
					},
					"name": {
						"title":       "Entry path",
						"description": "Full path of the entry within the CD-ROM image. Should follow ISO9660 file name restrictions (upper case alphanumeric characters and underscores only, with an optional period-separated extension for files).",
						"type":        "string"
					}
				},

				"oneOf": [
					{
						"additionalProperties": false,

						"properties": {
							"type": { "const": "empty" },
							"name": { "type":  "string" },

							"size": {
								"title":       "File size",
								"description": "Number of dummy null bytes to fill the file with. If zero or omitted, the file will be empty.",
								"type":        "integer",

								"minimum": 0
							}
						}
					},
					{
						"required":             [ "source" ],
						"additionalProperties": false,

						"properties": {
							"type": { "const": "file" },
							"name": { "type":  "string" },

							"source": {
								"title":       "Path to source file",
								"description": "Path to the source file to add to the image, relative to the configuration file's directory by default.",
								"type":        "string",

								"format": "uri-reference"
							}
						}
					},
					{
						"additionalProperties": false,

						"properties": {
							"type": { "const": "directory" },
							"name": { "type":  "string" }
						}
					},
					{
						"required":             [ "source" ],
						"additionalProperties": false,

						"properties": {
							"type": { "pattern": "^fileAlias|directoryAlias$" },
							"name": { "type":    "string" },

							"source": {
								"title":       "Path to linked entry",
								"description": "Full path to the entry in the CD-ROM image this entry shall be a hard link to.",
								"type":        "string"
							}
						}
					}
				]
			}
		}
	}
}