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* WikiLambda Vue editor: Vuex Wikidata Items module
*
* @copyright 2020– Abstract Wikipedia team; see AUTHORS.txt
* @license MIT
*/
const Constants = require( '../../../Constants.js' ),
apiUtils = require( '../../../mixins/api.js' ).methods;
module.exports = exports = {
state: {
items: {}
},
getters: {
/**
* Returns the Wikidata Item data given its Id,
* the fetch Promise if the fetch request is on the fly,
* or undefined if it hasn't been requested yet.
*
* @param {Object} state
* @return {Function}
*/
getItemData: function ( state ) {
/**
* @param {string} id
* @return {Object|Promise|undefined}
*/
function findItemData( id ) {
return state.items[ id ];
}
return findItemData;
},
/**
* Given the rowId of the Wikidata Item entity
* returns the rowId of the Wikidata Item Id string.
*
* @param {Object} _state
* @param {Object} getters
* @return {Function}
*/
getItemIdRow: function ( _state, getters ) {
/**
* @param {number} rowId
* @return {Object|undefined}
*/
function findItemId( rowId ) {
return getters.getWikidataEntityIdRow( rowId, Constants.Z_WIKIDATA_ITEM );
}
return findItemId;
}
},
mutations: {
/**
* Stores the Wikidata item data indexed by its Id
*
* @param {Object} state
* @param {Object} payload
* @param {string} payload.id
* @param {Object} payload.data
*/
setItemData: function ( state, payload ) {
// Select only subset of Wikidata Item data; title and labels
const unwrap = ( ( { title, labels } ) => ( { title, labels } ) );
state.items[ payload.id ] = unwrap( payload.data );
}
},
actions: {
/**
* Calls Wikidata Action API to fetch Wikidata Items
* given their Ids.
*
* @param {Object} context
* @param {Object} payload
* @param {Array} payload.ids
* @return {Promise}
*/
fetchItems: function ( context, payload ) {
// Filter out the fetched or fetching Wikidata Item Ids
const ids = payload.ids.filter( ( id ) => context.getters.getItemData( id ) === undefined );
if ( ids.length === 0 ) {
// If list is empty, do nothing
return;
}
const request = {
language: context.getters.getUserLangCode,
ids: ids.join( '|' )
};
const promise = apiUtils.fetchWikidataEntities( request )
.then( ( data ) => {
// Once received, store Wikidata Item Ids with their data
const fetched = data.entities ? Object.keys( data.entities ) : [];
fetched.forEach( ( id ) => context.commit( 'setItemData', { id, data: data.entities[ id ] } ) );
return data;
} );
// Store Wikidata Item Ids with their resolving promise
ids.forEach( ( id ) => context.commit( 'setItemData', { id, data: promise } ) );
return promise;
}
}
};
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