@bookbox/core/build/esm/model/meta.js

Bookbox — e-book format

function getGroup({ condition, map, }) {
    return (schema) => {
        const result = [];
        const addContents = (schema) => {
            for (const item of schema) {
                if (typeof item === 'string') {
                    continue;
                }
                if (condition(item)) {
                    result.push(map(item));
                    continue;
                }
                addContents(item.children);
            }
        };
        addContents(schema);
        return result;
    };
}
function getObjectsByHeader({ condition }) {
    return (schema) => {
        const result = {};
        let currentHeader = 'root';
        const addContents = (schema) => {
            for (const item of schema) {
                if (typeof item === 'string') {
                    continue;
                }
                if (item.name === 'header') {
                    currentHeader = item.props.key;
                }
                if (condition(item)) {
                    if (!result[currentHeader]) {
                        result[currentHeader] = [];
                    }
                    result[currentHeader].push(item.props.key);
                    continue;
                }
                addContents(item.children);
            }
        };
        addContents(schema);
        return result;
    };
}
const getContents = (builder, store, build) => {
    return getGroup({
        condition: item => item.name === 'header' || item.name === 'title',
        map: item => {
            var _a;
            const headerProps = item.props;
            const header = {
                value: builder({ schema: [item], store, build }),
                text: item.children.map(value => (typeof value === 'string' ? value : JSON.stringify(value))).join(''),
                key: headerProps.key,
                level: (_a = headerProps.level) !== null && _a !== void 0 ? _a : 1,
            };
            return header;
        },
    });
};
const getImageList = getGroup({
    condition: e => e.name === 'image',
    map: e => e,
});
const getImages = (schema) => {
    const imageList = getImageList(schema);
    return {
        keysList: imageList.map(e => e.props.key),
        keysByHeader: getObjectsByHeader({
            condition: e => e.name === 'image',
        })(schema),
    };
};
const getItemList = (name) => getGroup({
    condition: e => e.name === name,
    map: e => e,
});
const getItemMeta = (schema, name) => {
    const imageList = getItemList(name)(schema);
    return {
        keysList: imageList.map(e => { var _a; return ((_a = e.props.key) !== null && _a !== void 0 ? _a : ''); }),
        keysByHeader: getObjectsByHeader({
            condition: e => e.name === name,
        })(schema),
    };
};
export function getBookMeta({ schema, store, builder, build, }) {
    return {
        contents: getContents(builder, store, build)(schema),
        media: {
            image: getItemMeta(schema, 'image'),
            video: getItemMeta(schema, 'video'),
            audio: getItemMeta(schema, 'audio'),
        },
    };
}