Function extractEventVariants

java/scripts/codegen/java.ts:695–729

(schema: JSONSchema7)

}

function extractEventVariants(schema: JSONSchema7): EventVariant[] {
    const definitions = schema.definitions as Record<string, JSONSchema7>;
    const sessionEvent = definitions?.SessionEvent;
    if (!sessionEvent?.anyOf) throw new Error("Schema must have SessionEvent definition with anyOf");

    return (sessionEvent.anyOf as JSONSchema7[])
        .map((variant) => {
            // Resolve $ref if present (1.0.35+ schema uses $ref to named definitions)
            let resolved = variant;
            if (variant.$ref) {
                const refName = variant.$ref.replace(/^#\/definitions\//, "");
                resolved = definitions[refName];
                if (!resolved) throw new Error(`Unresolved $ref: ${variant.$ref}`);
            }
            const typeSchema = resolved.properties?.type as JSONSchema7;
            const typeName = typeSchema?.const as string;
            if (!typeName) throw new Error("Variant must have type.const");
            const baseName = toJavaClassName(typeName);
            let dataSchema = resolved.properties?.data as JSONSchema7 | undefined;
            // Resolve $ref on data schema if present
            if (dataSchema?.$ref) {
                const dataRefName = dataSchema.$ref.replace(/^#\/definitions\//, "");
                dataSchema = definitions[dataRefName];
            }
            return {
                typeName,
                className: `${baseName}Event`,
                dataSchema: dataSchema ?? null,
                description: resolved.description,
                stability: (variant as unknown as Record<string, unknown>).stability as string | undefined,
                deprecated: (variant as unknown as Record<string, unknown>).deprecated === true,
            };
        })
        .filter((v) => !EXCLUDED_EVENT_TYPES.has(v.typeName));
}

async function generateSessionEvents(schemaPath: string): Promise<void> {
    console.log("\n📋 Generating session event classes...");