{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://kraken.scalecomputing.com/schemas/application/v1.0.0.json",
  "title": "Fleet Manager Application Manifest",
  "description": "Schema for Fleet Manager Application manifests version 1.0.0",
  "type": "object",
  "required": ["type", "version", "metadata", "spec"],
  "properties": {
    "type": {
      "type": "string",
      "const": "Application",
      "description": "Resource type identifier"
    },
    "version": {
      "type": "string",
      "const": "1.0.0",
      "description": "Schema version"
    },
    "metadata": {
      "$ref": "#/definitions/metadata"
    },
    "spec": {
      "$ref": "#/definitions/spec"
    }
  },
  "additionalProperties": false,
  "definitions": {
    "metadata": {
      "type": "object",
      "required": ["name"],
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9_.-]([-a-zA-Z0-9_.{}]*[a-zA-Z0-9_.}])?$",
          "maxLength": 255,
          "description": "Application name (more flexible pattern for templating and underscores)"
        },
        "labels": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9]([-a-zA-Z0-9_.]*[a-zA-Z0-9])?$",
            "maxLength": 63
          },
          "description": "Classification and organization labels"
        }
      },
      "additionalProperties": false
    },
    "spec": {
      "type": "object",
      "required": ["resources"],
      "properties": {
        "assets": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/asset"
          },
          "description": "External assets (disk images, ISOs, etc.)"
        },
        "resources": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/resource"
          },
          "minItems": 1,
          "description": "Infrastructure resources"
        }
      },
      "additionalProperties": false
    },
    "asset": {
      "type": "object",
      "required": ["name", "type", "format", "url"],
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9_.-]([-a-zA-Z0-9_.]*[a-zA-Z0-9_.])?$",
          "maxLength": 63,
          "description": "Asset identifier (more flexible pattern for underscores)"
        },
        "type": {
          "type": "string",
          "enum": ["virtual_disk"],
          "description": "Asset type"
        },
        "format": {
          "type": "string",
          "enum": ["raw", "qcow2", "iso"],
          "description": "Asset format"
        },
        "url": {
          "type": "string",
          "format": "uri",
          "pattern": "^https://",
          "description": "Asset download URL (HTTPS required)"
        }
      },
      "additionalProperties": false
    },
    "resource": {
      "type": "object",
      "required": ["type", "name", "spec"],
      "properties": {
        "type": {
          "type": "string",
          "enum": ["virdomain"],
          "description": "Resource type"
        },
        "name": {
          "type": "string",
          "pattern": "^[a-zA-Z0-9_.-]([-a-zA-Z0-9_.{}]*[a-zA-Z0-9_.}])?$",
          "maxLength": 63,
          "description": "Resource identifier (more flexible pattern for templating and underscores)"
        },
        "spec": {
          "$ref": "#/definitions/virdomain_spec"
        }
      },
      "additionalProperties": false
    },
    "virdomain_spec": {
      "type": "object",
      "required": ["cpu", "memory", "machine_type", "state"],
      "properties": {
        "description": {
          "type": "string",
          "maxLength": 255,
          "description": "Human-readable description"
        },
        "cpu": {
          "type": "integer",
          "minimum": 1,
          "maximum": 128,
          "description": "Number of virtual CPU cores"
        },
        "memory": {
          "type": "string",
          "pattern": "^[0-9]+$",
          "description": "Memory allocation in bytes (as string)"
        },
        "machine_type": {
          "type": "string",
          "enum": ["uefi", "bios", "tpm"],
          "description": "Virtual machine firmware type"
        },
        "state": {
          "type": "string",
          "enum": ["running", "shutoff"],
          "description": "Desired VM power state"
        },
        "storage_devices": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/storage_device"
          },
          "description": "Storage devices"
        },
        "network_devices": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/network_device"
          },
          "description": "Network interfaces"
        },
        "tags": {
          "type": "array",
          "items": {
            "type": "string",
            "pattern": "^[a-zA-Z0-9]([-a-zA-Z0-9_.]*[a-zA-Z0-9])?$",
            "maxLength": 63
          },
          "description": "Classification tags"
        },
        "cloud_init_data": {
          "$ref": "#/definitions/cloud_init_data"
        }
      },
      "additionalProperties": false
    },
    "storage_device": {
      "type": "object",
      "required": ["name", "type"],
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[a-z0-9]([-a-z0-9]*[a-z0-9])?$",
          "maxLength": 63,
          "description": "Storage device identifier"
        },
        "type": {
          "type": "string",
          "enum": ["virtio_disk", "ide_cdrom"],
          "description": "Storage device type"
        },
        "source": {
          "type": "string",
          "description": "Reference to asset name"
        },
        "capacity": {
          "description": "Storage capacity in bytes (integer) or human-readable string (e.g., 10Gi, 40MiB, 400000000)",
          "oneOf": [
            {
              "type": "integer",
              "minimum": 1073741824,
              "maximum": 1099511627776
            },
            {
              "type": "string",
              "pattern": "^([0-9]+([EPTGMK]i?B|[EPTGMK]b)?|[0-9]+)$"
            }
          ]
        },
        "boot": {
          "type": "integer",
          "minimum": 1,
          "maximum": 255,
          "description": "Boot priority (1=primary)"
        }
      },
      "additionalProperties": false,
      "anyOf": [
        {
          "required": ["source"]
        },
        {
          "required": ["capacity"]
        }
      ]
    },
    "network_device": {
      "type": "object",
      "required": ["name", "type"],
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[a-z0-9]([-a-z0-9]*[a-z0-9])?$",
          "maxLength": 63,
          "description": "Network interface identifier"
        },
        "type": {
          "type": "string",
          "enum": ["virtio"],
          "description": "Network device type"
        }
      },
      "additionalProperties": false
    },
    "cloud_init_data": {
      "type": "object",
      "properties": {
        "user_data": {
          "type": "string",
          "description": "Cloud-init user data (YAML)"
        },
        "meta_data": {
          "type": "string",
          "description": "Cloud-init metadata (YAML)"
        }
      },
      "additionalProperties": false
    }
  }
}