{
  "$schema": "http://json-schema.org/draft-04/schema#",

  "definitions": {

    "localReference": {
      "type": "string",
      "pattern": "^@"
    },

    "dcosReleaseVersion": {
      "type": "string",
      "pattern": "^(?:0|[1-9][0-9]*)(?:\\.(?:0|[1-9][0-9]*))*$",
      "description": "A string representation of a DC/OS Release Version"
    },

    "url": {
      "type": "string",
      "pattern": "."
    },

    "base64String": {
      "type": "string",
      "pattern": "^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$"
    },

    "cliInfo": {
      "additionalProperties": false,
      "properties": {
        "contentHash": {
          "items": {
            "$ref": "#/definitions/hash"
          },
          "minItems": 1,
          "type": "array"
        },
        "kind": {
          "enum": [
            "executable",
            "zip"
          ],
          "type": "string"
        },
        "url": {
          "$ref": "#/definitions/url"
        }
      },
      "required": [
        "url",
        "kind",
        "contentHash"
      ],
      "type": "object"
    },

    "hash": {
      "additionalProperties": false,
      "properties": {
        "algo": {
          "enum": [
            "sha256"
          ],
          "type": "string"
        },
        "value": {
          "type": "string"
        }
      },
      "required": [
        "algo",
        "value"
      ],
      "type": "object"
    },


    "marathon": {
      "type": "object",
      "properties": {
        "v2AppMustacheTemplate": {
          "oneOf": [
            {"$ref": "#/definitions/base64String"},
            {"$ref": "#/definitions/localReference"}
          ]
        }
      },
      "required": [ "v2AppMustacheTemplate" ],
      "additionalProperties": false
    },

    "v30resource": {
      "additionalProperties": false,
      "type": "object",
      "properties": {
        "assets": {
          "type": "object",
          "properties": {
            "uris": {
              "type": "object",
              "additionalProperties": {
                "type": "string"
              }
            },
            "container": {
              "type": "object",
              "properties": {
                "docker": {
                  "type": "object",
                  "additionalProperties": {
                    "type": "string"
                  }
                }
              },
              "additionalProperties": false
            }
          },
          "additionalProperties": false
        },
        "cli": {
          "additionalProperties": false,
          "properties": {
            "binaries": {
              "additionalProperties": false,
              "minProperties": 1,
              "properties": {
                "darwin": {
                  "additionalProperties": false,
                  "properties": {
                    "x86-64": {
                      "$ref": "#/definitions/cliInfo"
                    }
                  },
                  "required": [
                    "x86-64"
                  ],
                  "type": "object"
                },
                "linux": {
                  "additionalProperties": false,
                  "properties": {
                    "x86-64": {
                      "$ref": "#/definitions/cliInfo"
                    }
                  },
                  "required": [
                    "x86-64"
                  ],
                  "type": "object"
                },
                "windows": {
                  "additionalProperties": false,
                  "properties": {
                    "x86-64": {
                      "$ref": "#/definitions/cliInfo"
                    }
                  },
                  "required": [
                    "x86-64"
                  ],
                  "type": "object"
                }
              },
              "type": "object"
            }
          },
          "required": [
              "binaries"
          ],
          "type": "object"
        },
        "images": {
          "type": "object",
          "properties": {
            "icon-small": {
              "type": "string",
              "description": "PNG icon URL, preferably 48 by 48 pixels."
            },
            "icon-medium": {
              "type": "string",
              "description": "PNG icon URL, preferably 128 by 128 pixels."
            },
            "icon-large": {
              "type": "string",
              "description": "PNG icon URL, preferably 256 by 256 pixels."
            },
            "screenshots": {
              "type": "array",
              "items": {
                "type": "string",
                "description": "PNG screen URL, preferably 1024 by 1024 pixels."
              }
            }
          },
          "additionalProperties": false
        }
      }
    },


    "config": {
      "$ref": "http://json-schema.org/draft-04/schema#"
    },


    "command": {
      "additionalProperties": false,
      "required": ["pip"],
      "properties": {
        "pip": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "title": "Embedded Requirements File",
          "description": "[Deprecated v3.x] An array of strings representing of the requirements file to use for installing the subcommand for Pip. Each item is interpreted as a line in the requirements file."
        }
      }
    },


    "v30BuildDef": {
      "properties": {
        "packagingVersion": {
          "type": "string",
          "enum": ["3.0"]
        },
        "name": {
          "type": "string"
        },
        "version": {
          "type": "string",
          "pattern": "^[-a-zA-Z0-9.]+$"
        },
        "scm": {
          "type": "string"
        },
        "maintainer": {
          "type": "string"
        },
        "website": {
          "type": "string"
        },
        "description": {
          "type": "string"
        },
        "framework": {
          "type": "boolean",
          "default": false,
          "description": "True if this package installs a new Mesos framework."
        },
        "preInstallNotes": {
          "type": "string",
          "description": "Pre installation notes that would be useful to the user of this package."
        },
        "postInstallNotes": {
          "type": "string",
          "description": "Post installation notes that would be useful to the user of this package."
        },
        "postUninstallNotes": {
          "type": "string",
          "description": "Post uninstallation notes that would be useful to the user of this package."
        },
        "tags": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[^\\s]+$"
          }
        },
        "licenses": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "name": {
                "type": "string",
                "description": "The name of the license. For example one of [Apache License Version 2.0 | MIT License | BSD License | Proprietary]"
              },
              "url": {
                "$ref": "#/definitions/url",
                "description": "The URL where the license can be accessed"
              }
            },
            "additionalProperties": false,
            "required": [
              "name",
              "url"
            ]
          }
        },
        "minDcosReleaseVersion": {
          "$ref": "#/definitions/dcosReleaseVersion",
          "description": "The minimum DC/OS Release Version the package can run on."
        },
        "marathon": {
          "$ref": "#/definitions/marathon"
        },
        "resource": {
          "oneOf": [
            {"$ref": "#/definitions/v30resource"},
            {"$ref": "#/definitions/localReference"}
          ]
        },
        "config": {
          "oneOf": [
            {"$ref": "#/definitions/config"},
            {"$ref": "#/definitions/localReference"}
          ]
        },
        "command": {
          "$ref": "#/definitions/command"
        }
      },
      "required": [
        "packagingVersion",
        "name",
        "version",
        "maintainer",
        "description",
        "tags"
      ],
      "additionalProperties": false
    },

    "v40BuildDef": {
      "properties": {
        "packagingVersion": {
          "type": "string",
          "enum": ["4.0"]
        },
        "name": {
          "type": "string"
        },
        "version": {
          "type": "string",
          "pattern": "^[-a-zA-Z0-9.]+$"
        },
        "scm": {
          "type": "string"
        },
        "maintainer": {
          "type": "string"
        },
        "website": {
          "type": "string"
        },
        "description": {
          "type": "string"
        },
        "framework": {
          "type": "boolean",
          "default": false,
          "description": "True if this package installs a new Mesos framework."
        },
        "upgradesFrom": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "List of versions that can upgrade to this package. If the property is a list containing the string '*', any version can upgrade to this package. If the property is not set or the empty list, no version can upgrade to this package."
        },
        "downgradesTo": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "List of versions that this package can downgrade to. If the property is a list containing the string '*', this package can downgrade to any version. If the property is not set or the empty list, this package cannot downgrade."
        },
        "preInstallNotes": {
          "type": "string",
          "description": "Pre installation notes that would be useful to the user of this package."
        },
        "postInstallNotes": {
          "type": "string",
          "description": "Post installation notes that would be useful to the user of this package."
        },
        "postUninstallNotes": {
          "type": "string",
          "description": "Post uninstallation notes that would be useful to the user of this package."
        },
        "tags": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[^\\s]+$"
          }
        },
        "licenses": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "name": {
                "type": "string",
                "description": "The name of the license. For example one of [Apache License Version 2.0 | MIT License | BSD License | Proprietary]"
              },
              "url": {
                "$ref": "#/definitions/url",
                "description": "The URL where the license can be accessed"
              }
            },
            "additionalProperties": false,
            "required": [
              "name",
              "url"
            ]
          }
        },
        "minDcosReleaseVersion": {
          "$ref": "#/definitions/dcosReleaseVersion",
          "description": "The minimum DC/OS Release Version the package can run on."
        },
        "marathon": {
          "$ref": "#/definitions/marathon"
        },
        "resource": {
          "oneOf": [
            {"$ref": "#/definitions/v30resource"},
            {"$ref": "#/definitions/localReference"}
          ]
        },
        "config": {
          "oneOf": [
            {"$ref": "#/definitions/config"},
            {"$ref": "#/definitions/localReference"}
          ]
        }
      },
      "required": [
        "packagingVersion",
        "name",
        "version",
        "maintainer",
        "description",
        "tags"
      ],
      "additionalProperties": false
    }

  },

  "type": "object",
  "oneOf": [
    { "$ref": "#/definitions/v30BuildDef" },
    { "$ref": "#/definitions/v40BuildDef" }
  ]
}