import { InteractiveSection } from './InteractiveSection';
import { OpenAPIOperationData } from './fetchOpenAPIOperation';
import { generateSchemaExample } from './generateSchemaExample';
import { OpenAPIContextProps } from './types';
import { noReference } from './utils';

/**
 * Display an example of the response content.
 */
export function OpenAPIResponseExample(props: {
    data: OpenAPIOperationData;
    context: OpenAPIContextProps;
}) {
    const { data, context } = props;

    // if there are no responses defined for the operation
    if (!data.operation.responses) {
        return null;
    }

    const responses = Object.entries(data.operation.responses);
    // Sort response to get 200, and 2xx first
    responses.sort(([a], [b]) => {
        if (a === 'default') {
            return 1;
        }
        if (b === 'default') {
            return -1;
        }
        if (a === '200') {
            return -1;
        }
        if (b === '200') {
            return 1;
        }
        return Number(a) - Number(b);
    });
    // Take the first one
    const response = responses[0];

    if (!response) {
        return null;
    }

    const responseObject = noReference(response[1]);

    const schema = noReference(
        (
            responseObject.content?.['application/json'] ??
            responseObject.content?.[Object.keys(responseObject.content)[0]]
        )?.schema,
    );

    if (!schema) {
        return null;
    }

    const example = generateSchemaExample(schema);
    if (example === undefined) {
        return null;
    }

    return (
        <InteractiveSection header="Response" className="openapi-response-example">
            <context.CodeBlock code={JSON.stringify(example, null, 2)} syntax="json" />
        </InteractiveSection>
    );
}