{
    "$schema": "https://json-schema.org/draft-07/schema#",
    "$id": "#",
    "title": "meta",
    "description": "A metadata file describing a file or directory. The metadata file name concatenates the described item's name with a final string segment of '_meta.json'.",
    "type": "object",
    "properties": {
      "_id": {
        "description": "The ID of the file or directory. This ID must be one of the values found within the 'Ids' object.",
        "type": "string"
      },
      "Ids": {
        "description": "The known checksum-derived IDs of the item.",
        "type": "object",
        "properties": {
          "MD5": {
            "description": "The MD5-related ID of the item.",
            "type": "string"
          },
          "SHA1": {
            "description": "The SHA1-related ID of the item.",
            "type": "string"
          },
          "SHA256": {
            "description": "The SHA256-related ID of the item.",
            "type": "string"
          },
          "SHA512": {
            "description": "The SHA512-related ID of the item.",
            "type": "string"
          }
        },
        "required": [
          "MD5",
          "SHA256"
        ]
      },
      "Name": {
        "description": "The name of the file or directory. If the item is a file, this string will include the file's extension.",
        "type": "string"
      },
      "NameHashes": {
        "description": "The checksums of the item's Name string.",
        "type": [
          "null",
          "object"
        ],
        "properties": {
          "MD5": {
            "description": "The MD5 checksum of the item's Name string.",
            "type": "string"
          },
          "SHA1": {
            "description": "The SHA1 checksum of the item's Name string.",
            "type": "string"
          },
          "SHA256": {
            "description": "The SHA256 checksum of the item's Name string.",
            "type": "string"
          },
          "SHA512": {
            "description": "The SHA512 checksum of the item's Name string.",
            "type": "string"
          }
        },
        "required": [
          "MD5",
          "SHA256"
        ]
      },
      "ContentHashes": {
        "description": "The checksums of the item's content (if the item is a file).",
        "type": [
          "null",
          "object"
        ],
        "anyOf": [
          {
            "type": "null"
          },
          {
            "type": "object",
            "properties": {
              "MD5": {
                "description": "The MD5 checksum of the item's content.",
                "type": "string"
              },
              "SHA1": {
                "description": "The SHA1 checksum of the item's content.",
                "type": "string"
              },
              "SHA256": {
                "description": "The SHA256 checksum of the item's content.",
                "type": "string"
              },
              "SHA512": {
                "description": "The SHA512 checksum of the item's content.",
                "type": "string"
              }
            },
            "required": [
              "MD5",
              "SHA256"
            ]
          }
        ]
      },
      "Extension": {
        "description": "The extension of the file (if the item is a file).",
        "type": [
          "null",
          "string"
        ]
      },
      "BaseName": {
        "description": "The base name of the file or directory. This string may be identical to the 'Name' string.",
        "type": "string"
      },
      "StorageName": {
        "description": "The finalized name of the file or directory as it is stored in the system. This string will always begin with the '_id' of the item.",
        "type": "string"
      },
      "Encoding": {
        "type": [
          "null",
          "object"
        ],
        "anyOf": [
          {
            "description": "If the item is a directory, this field will be null.",
            "type": "null"
          },
          {
            "description": "Information about the encoding of the file's content.",
            "type": "object",
            "properties": {
              "IsSingleByte": {
                "type": "boolean"
              },
              "Preamble": {
                "type": [
                  "null",
                  "string"
                ]
              },
              "BodyName": {
                "type": "string"
              },
              "EncodingName": {
                "type": "string"
              },
              "HeaderName": {
                "type": "string"
              },
              "WebName": {
                "type": "string"
              },
              "WindowsCodePage": {
                "type": "integer"
              },
              "IsBrowserDisplay": {
                "type": "boolean"
              },
              "IsBrowserSave": {
                "type": "boolean"
              },
              "IsMailNewsDisplay": {
                "type": "boolean"
              },
              "IsMailNewsSave": {
                "type": "boolean"
              },
              "EncoderFallback": {
                "type": "object",
                "properties": {
                  "DefaultString": {
                    "type": "string"
                  },
                  "MaxCharCount": {
                    "type": "integer"
                  }
                },
                "required": [
                  "DefaultString",
                  "MaxCharCount"
                ]
              },
              "DecoderFallback": {
                "type": "object",
                "properties": {
                  "DefaultString": {
                    "type": "string"
                  },
                  "MaxCharCount": {
                    "type": "integer"
                  }
                },
                "required": [
                  "DefaultString",
                  "MaxCharCount"
                ]
              },
              "IsReadOnly": {
                "type": "boolean"
              },
              "CodePage": {
                "type": "integer"
              }
            },
            "required": [
              "BodyName",
              "CodePage",
              "DecoderFallback",
              "EncoderFallback",
              "EncodingName",
              "HeaderName",
              "IsBrowserDisplay",
              "IsBrowserSave",
              "IsMailNewsDisplay",
              "IsMailNewsSave",
              "IsReadOnly",
              "IsSingleByte",
              "Preamble",
              "WebName",
              "WindowsCodePage"
            ]
          }
        ]
      },
      "Size": {
        "description": "The size of a file in bytes (if the item is a file), or the size of all contained files and directories (if the item is a directory).",
        "type": "number"
      },
      "IsDirectory": {
        "description": "A boolean value indicating whether the item is a directory.",
        "type": "boolean"
      },
      "IsLink": {
        "description": "A boolean value indicating whether the item is a symbolic link.",
        "type": "boolean"
      },
      "ParentId": {
        "description": "The ID of the parent directory of the file or directory. If the item is at the root of the system, this field will be 'x'.",
        "type": [
          "null",
          "string"
        ]
      },
      "ParentIds": {
        "type": [
          "null",
          "object"
        ],
        "anyOf": [
          {
            "type": "null"
          },
          {
            "$ref": "#/properties/Ids"
          }
        ]
      },
      "ParentName": {
        "$ref": "#/properties/Name"
      },
      "ParentNameHashes": {
        "$ref": "#/properties/NameHashes"
      },
      "UnixTimeAccessed": {
        "description": "The Unix timestamp from when the file or directory was last accessed. This field should include milliseconds.",
        "type": "integer"
      },
      "UnixTimeCreated": {
        "description": "The Unix timestamp from when the file or directory was created. This field should include milliseconds.",
        "type": "integer"
      },
      "UnixTimeModified": {
        "description": "The Unix timestamp from when the file or directory was last modified. This field should include milliseconds.",
        "type": "integer"
      },
      "TimeAccessed": {
        "description": "The local date and time when the file or directory was last accessed. This string is in the format 'yyyy-MM-ddTHH:mm:ss.fffffffzzz'.",
        "type": "string"
      },
      "TimeCreated": {
        "description": "The local date and time when the file or directory was created. This string is in the format 'yyyy-MM-ddTHH:mm:ss.fffffffzzz'.",
        "type": "string"
      },
      "TimeModified": {
        "description": "The local date and time when the file or directory was last modified. This string is in the format 'yyyy-MM-ddTHH:mm:ss.fffffffzzz'.",
        "type": "string"
      },
      "Items": {
        "description": "The items contained within the directory (if the item is a directory). If not null, this field recursively applies the 'meta' schema to each contained item.",
        "type": [
          "null",
          "array"
        ],
        "anyOf": [
          {
            "type": "null"
          },
          {
            "type": [
              "null",
              "array"
            ],
            "items": {
              "anyOf": [
                {
                  "type": "null"
                },
                {
                  "$ref": "#"
                }
              ]
            }
          }
        ]
      },
      "Metadata": {
        "type": [
          "null",
          "array"
        ],
        "items": {
          "anyOf": [
            {
              "type": "null"
            },
            {
              "type": "object",
              "properties": {
                "Source": {
                  "description": "The source category of the metadata.",
                  "type": "string"
                },
                "Type": {
                  "description": "The type of metadata.",
                  "type": "string"
                },
                "Name": {
                  "description": "The name of the metadata (if being absorbed from an external file). Metadata generated internally will have a name of 'null'.",
                  "type": [
                    "null",
                    "string"
                  ]
                },
                "NameHashes": {
                  "description": "The checksums of the metadata's Name string. If the metadata is generated internally, this field will be null.",
                  "type": [
                    "null",
                    "object"
                  ],
                  "anyOf": [
                    {
                      "type": "null"
                    },
                    {
                      "$ref": "#/properties/NameHashes"
                    }
                  ]
                },
                "Data": {
                  "description": "The data of the metadata. This is a very generic field that can contain any type of data (so long as it doesn't break the JSON).",
                  "type": [
                    "null",
                    "string",
                    "object",
                    "array"
                  ]
                }
              },
              "required": [
                "Data",
                "Name",
                "NameHashes",
                "Source",
                "Type"
              ]
            }
          ]
        }
      }
    },
    "required": [
      "_id",
      "BaseName",
      "ContentHashes",
      "Encoding",
      "Extension",
      "Ids",
      "IsDirectory",
      "IsLink",
      "Name",
      "NameHashes",
      "ParentId",
      "ParentIds",
      "ParentName",
      "ParentNameHashes",
      "Size",
      "StorageName",
      "TimeAccessed",
      "TimeCreated",
      "TimeModified",
      "UnixTimeAccessed",
      "UnixTimeCreated",
      "UnixTimeModified"
    ]
  }