{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://akash97p.github.io/agent-notify/schemas/arc-0.1.schema.json",
  "title": "Attention Request Contract 0.1",
  "description": "A transport-neutral event contract for creating, updating, and resolving bounded requests for human attention.",
  "type": "object",
  "required": ["arc_version", "event_id", "event_type", "occurred_at", "sender", "request"],
  "properties": {
    "arc_version": { "const": "0.1" },
    "event_id": { "type": "string", "minLength": 1, "maxLength": 512 },
    "event_type": { "enum": ["request.created", "request.updated", "request.resolved"] },
    "occurred_at": { "type": "string", "format": "date-time" },
    "sender": {
      "type": "object",
      "required": ["id"],
      "properties": {
        "id": { "type": "string", "minLength": 1, "maxLength": 100 },
        "name": { "type": "string", "minLength": 1, "maxLength": 160 },
        "version": { "type": "string", "maxLength": 100 },
        "instance_id": { "type": "string", "maxLength": 100 }
      },
      "additionalProperties": false
    },
    "context": {
      "type": "object",
      "properties": {
        "session_id": { "type": "string", "maxLength": 100 },
        "correlation_id": { "type": "string", "maxLength": 200 },
        "project": { "type": "string", "maxLength": 200 },
        "cwd": { "type": "string", "maxLength": 1024 },
        "pid": { "type": "integer", "minimum": 0 }
      },
      "additionalProperties": false
    },
    "request": {
      "type": "object",
      "properties": {
        "key": { "type": "string", "minLength": 1, "maxLength": 100, "pattern": ".*\\S.*" },
        "kind": { "enum": ["information", "question", "permission", "blocked", "failure", "completion"] },
        "title": { "type": "string", "minLength": 1, "maxLength": 200 },
        "message": { "type": "string", "minLength": 1, "maxLength": 4000 },
        "priority": { "enum": ["low", "normal", "high", "critical"] }
      },
      "additionalProperties": false
    },
    "extensions": {
      "type": "object",
      "properties": {
        "x-agentnotify": {
          "type": "object",
          "properties": {
            "notification_type": { "type": "string", "pattern": "^[a-z][a-z0-9_]{0,63}$" }
          },
          "additionalProperties": false
        }
      },
      "patternProperties": { "^x-[a-z0-9][a-z0-9.-]{0,63}$": true },
      "additionalProperties": false
    }
  },
  "allOf": [
    {
      "if": {
        "properties": { "event_type": { "enum": ["request.created", "request.updated"] } },
        "required": ["event_type"]
      },
      "then": {
        "properties": {
          "request": {
            "required": ["kind", "message"]
          }
        }
      }
    },
    {
      "if": {
        "properties": { "event_type": { "enum": ["request.updated", "request.resolved"] } },
        "required": ["event_type"]
      },
      "then": {
        "properties": {
          "request": {
            "required": ["key"]
          }
        }
      }
    },
    {
      "if": {
        "properties": { "event_type": { "const": "request.resolved" } },
        "required": ["event_type"]
      },
      "then": {
        "properties": {
          "request": {
            "required": ["key"],
            "maxProperties": 1
          }
        }
      }
    }
  ],
  "additionalProperties": false
}