{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://stella-ops.org/notify/schemas/template.schema.json",
  "title": "Notify Template",
  "type": "object",
  "required": ["schema_version", "tenant_id", "template_id", "channel", "locale", "body"],
  "properties": {
    "schema_version": { "type": "string", "pattern": "^v[0-9]+\\.[0-9]+$" },
    "tenant_id": { "type": "string", "minLength": 1 },
    "template_id": { "type": "string", "pattern": "^[A-Z0-9_-]{4,64}$" },
    "channel": { "type": "string", "enum": ["email", "slack", "teams", "webhook", "sms"] },
    "locale": { "type": "string", "pattern": "^[a-z]{2}(-[A-Z]{2})?$" },
    "subject": { "type": "string" },
    "body": { "type": "string" },
    "helpers": { "type": "object", "additionalProperties": { "type": "string" } },
    "merge_fields": { "type": "array", "items": { "type": "string" } },
    "preview_hash": { "type": "string" },
    "created_at": { "type": "string", "format": "date-time" },
    "updated_at": { "type": "string", "format": "date-time" }
  },
  "additionalProperties": false
}