RocketChat/Rocket.Chat

import type { TextObject } from '../blocks/TextObject';
import type { BlockContext } from './BlockContext';
import type { BlockRenderers } from './BlockRenderers';
import type { TextObjectRenderer } from './TextObjectRenderer';

const getTextObjectRenderer = <T>(renderers: BlockRenderers<T>, type: TextObject['type']): TextObjectRenderer<T> | undefined => {
    const renderer = renderers[type] as TextObjectRenderer<T> | undefined;

    if (renderer) {
        return renderer;
    }

    switch (type) {
        case 'plain_text':
            return (renderers.plainText ?? renderers.text) as TextObjectRenderer<T> | undefined;

        case 'mrkdwn':
            return renderers.text as TextObjectRenderer<T> | undefined;
    }
};

export const renderTextObject =
    <T>(renderers: BlockRenderers<T>, context: BlockContext) =>
    (textObject: TextObject, index: number): T | null => {
        const renderer = getTextObjectRenderer(renderers, textObject.type);

        if (!renderer) {
            return null;
        }

        return renderer.call(renderers, textObject, context, index);
    };