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/** |
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* WordPress Dependencies |
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*/ |
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import { select } from '@wordpress/data'; |
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|
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/** |
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* External dependencies |
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*/ |
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import { v4 as uuidv4 } from 'uuid'; |
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|
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/** |
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* Get a beyondwordsMarker attribute for a block. |
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* |
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* Using the "Duplicate" button in the Block toolbar duplicates the marker |
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* attribute too, so we attempt to handle this by getting all the markers in the |
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* current Post and assinging new UUIDs to markers that already exist. |
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* |
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* @since 4.0.0 |
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* |
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* @param {Object} attributes Attributes for the block. |
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* |
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* @return {String} marker The block marker (segment marker in BeyondWords API). |
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*/ |
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const getBlockMarkerAttribute = ( attributes ) => { |
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const { beyondwordsMarker } = attributes; |
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|
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if ( ! beyondwordsMarker ) return uuidv4(); |
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|
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const existingMarkers = getExistingBlockMarkers() |
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|
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if ( countInArray( existingMarkers, beyondwordsMarker ) > 1 ) { |
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// Return a new UUID if this marker is a duplicate |
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return uuidv4(); |
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} |
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|
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// Return the existing marker only if it is not a duplicate |
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return beyondwordsMarker; |
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} |
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|
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/** |
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* Get all existing Block markers for the currently-edited post. |
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* |
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* If using `getBlocks()` proves to be too respource-intensive then further work |
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* will be required to optimise this. |
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* |
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* @since 4.0.0 |
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* |
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* @return {String[]} markers The block markers for the current Post. |
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*/ |
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const getExistingBlockMarkers = () => { |
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// Get all Blocks in current Post |
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const blocks = select( 'core/block-editor' ) |
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.getBlocks(); |
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|
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// Return all non-empty markers of the Blocks |
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return blocks |
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.map( block => block?.attributes?.beyondwordsMarker ) |
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.filter( marker => marker ); |
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} |
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|
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/** |
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* Count the number of times an item is in an array. |
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* |
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* @since 4.0.0 |
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* |
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* @return {Number} count The number of times the item occurs. |
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*/ |
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function countInArray(array, item) { |
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var count = 0; |
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|
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for ( var i = 0; i < array.length; i++ ) { |
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if ( array[ i ] === item ) { |
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count++; |
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} |
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} |
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|
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return count; |
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} |
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|
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export default getBlockMarkerAttribute; |
