{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.com/schemas/hosts.schema.json",
  "title": "Hosts and Hostgroups",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "hosts": {
      "type": "array",
      "items": { "$ref": "#/$defs/Host" }
    },
    "hostgroups": {
      "type": "array",
      "items": { "$ref": "#/$defs/HostGroup" }
    }
  },
  "required": ["hosts"],
  "$defs": {
    "Host": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "hostname": { "type": "string", "pattern": "^[A-Za-z0-9._-]+$" },
        "type": { "type": "string" },
        "model": { "type": "string" },
        "max_slot": { "type": "integer", "minimum": -1, "description": "-1 means auto-detect" },
        "dispatch_window": { "type": "array", "items": { "$ref": "#/$defs/TimeWindow" } },
        "sched_stop": { "type": "array", "items": { "$ref": "#/$defs/SchedStop" } },
        "resource": { "type": "array", "items": { "$ref": "#/$defs/HostResource" } },
        "description": { "type": "string", "maxLength": 4096 }
      },
      "required": ["hostname"]
    },
    "HostResource": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "name": { "type": "string", "pattern": "^[A-Za-z0-9._-]+$" },
        "value": {
          "description": "Resource value (string or number)",
          "oneOf": [
            { "type": "number" },
            { "type": "string" }
          ]
        }
      },
      "required": ["name"]
    },
    "TimeWindow": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "start_time": {
          "type": "string",
            "description": "[day:]hour[:minute]; day 0-6, hour 0-23, minute 0-59",
            "pattern": "^((([0-6]):)?([01]?\\d|2[0-3])(:[0-5]?\\d)?)$"
        },
        "end_time": {
          "type": "string",
            "description": "[day:]hour[:minute]; day 0-6, hour 0-23, minute 0-59",
            "pattern": "^((([0-6]):)?([01]?\\d|2[0-3])(:[0-5]?\\d)?)$"
        }
      },
      "required": ["start_time", "end_time"]
    },
    "SchedStop": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "resname": { "type": "string" },
        "sched": { "type": "number" },
        "stop": { "type": "number" }
      },
      "required": ["resname"],
      "anyOf": [
        { "required": ["sched"] },
        { "required": ["stop"] }
      ]
    },
    "HostGroup": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "groupname": { "type": "string", "pattern": "^[A-Za-z0-9._-]+$" },
        "members": {
          "type": "array",
          "minItems": 1,
          "items": {
            "type": "string",
            "pattern": "^(?:all|!|[A-Za-z0-9._*\\[\\]-]+)$"
          }
        },
        "exclude_members": {
          "type": "array",
          "items": { "type": "string", "pattern": "^(?:all|!|[A-Za-z0-9._*\\[\\]-]+)$" }
        }
      },
      "required": ["groupname", "members"]
    }
  }
}