const defaultState = { resources: {}, }; /** * Primary reducer for fresh-data apiclient data. * * @param {Object} state The base state for fresh-data. * @param {Object} action Action object to be processed. * @return {Object} The new state, or the previous state if this action doesn't belong to fresh-data. */ export default function reducer( state = defaultState, action ) { switch ( action.type ) { case 'FRESH_DATA_REQUESTED': return reduceRequested( state, action ); case 'FRESH_DATA_RECEIVED': return reduceReceived( state, action ); default: return state; } } export function reduceRequested( state, action ) { const newResources = action.resourceNames.reduce( ( resources, name ) => { resources[ name ] = { lastRequested: action.time }; return resources; }, {} ); return reduceResources( state, newResources ); } export function reduceReceived( state, action ) { const newResources = Object.keys( action.resources ).reduce( ( resources, name ) => { const resource = { ...action.resources[ name ] }; if ( resource.data ) { resource.lastReceived = action.time; } if ( resource.error ) { resource.lastError = action.time; } resources[ name ] = resource; return resources; }, {} ); return reduceResources( state, newResources ); } export function reduceResources( state, newResources ) { const updatedResources = Object.keys( newResources ).reduce( ( resources, resourceName ) => { const resource = resources[ resourceName ]; const newResource = newResources[ resourceName ]; resources[ resourceName ] = { ...resource, ...newResource }; return resources; }, { ...state.resources } ); return { ...state, resources: updatedResources }; }