botui/dist/block.js

Build customizable conversational UIs and bots

export function createBlock(type, meta, data, key) {
    return {
        key: key !== null && key !== void 0 ? key : -1,
        type: type,
        meta: meta,
        data: data,
    };
}
// it only manages the listed blocks in the UI, not the action.
export function blockManager(callback = (history = []) => { }) {
    let history = [];
    const getBlockIndexByKey = (key = -1) => history.findIndex((block) => block.key === key);
    const insertBlock = (block) => {
        const length = history.length;
        block.key = length;
        history.push(block);
        return length;
    };
    return {
        getAll: () => history,
        setAll: (blocks) => {
            blocks.forEach((block) => insertBlock(Object.assign({}, block))); // copied, to not to write to orignal
            callback(history);
        },
        get: (key) => {
            return history[getBlockIndexByKey(key)];
        },
        add: (block) => {
            const key = insertBlock(block);
            callback(history);
            return key;
        },
        update: (key, block) => {
            const index = getBlockIndexByKey(key);
            history[index] = block;
            callback(history);
        },
        remove: (key) => {
            const index = getBlockIndexByKey(key);
            history.splice(index, 1);
            callback(history);
        },
        clear: () => {
            history = [];
            callback(history);
        },
    };
}