wikimedia/mediawiki-extensions-Wikibase

import {
    DataType,
    DataValue,
    DataValueType,
    Rank,
    SnakType,
} from '@wmde/wikibase-datamodel-types';
import { StatementState } from './StatementState';
import { PathToStatement } from '@/store/statements/PathToStatement';
import { Getters } from 'vuex-smart-module';
import EntityId from '@/datamodel/EntityId';
import { PathToSnak } from '@/store/statements/PathToSnak';
import { PathToStatementGroup } from '@/store/statements/PathToStatementGroup';

export class StatementGetters extends Getters<StatementState> {
    public get containsEntity() {
        return ( entityId: EntityId ): boolean => {
            return this.state[ entityId ] !== undefined;
        };
    }

    public get propertyExists() {
        return (
            pathToStatementGroup: PathToStatementGroup,
        ): boolean => {
            return pathToStatementGroup.resolveStatementGroup( this.state ) !== null;
        };
    }

    public get isStatementGroupAmbiguous() {
        return (
            pathToStatementGroup: PathToStatementGroup,
        ): boolean => {
            const statementGroup = pathToStatementGroup.resolveStatementGroup( this.state );
            return statementGroup !== null && statementGroup.length > 1;
        };
    }

    public get rank() {
        return ( pathToStatement: PathToStatement ): Rank | null => {
            const statement = pathToStatement.resolveStatement( this.state );
            return statement?.rank ?? null;
        };
    }

    public get dataValue() {
        return ( pathToSnak: PathToSnak ): DataValue | null => {
            const snak = pathToSnak.resolveSnakInStatement( this.state );
            return snak?.datavalue ?? null;
        };
    }

    public get snakType() {
        return ( pathToSnak: PathToSnak ): SnakType | null => {
            const snak = pathToSnak.resolveSnakInStatement( this.state );
            return snak?.snaktype ?? null;
        };
    }

    public get dataType() {
        return ( pathToSnak: PathToSnak ): DataType | null => {
            const snak = pathToSnak.resolveSnakInStatement( this.state );
            return snak?.datatype ?? null;
        };
    }

    public get dataValueType() {
        return ( pathToSnak: PathToSnak ): DataValueType | null => {
            const snak = pathToSnak.resolveSnakInStatement( this.state );
            return snak?.datavalue?.type ?? null;
        };
    }
}