import * as React from 'react';
import { Mutation } from 'cbioportal-ts-api-client';
import {
    TableCellStatus,
    TableCellStatusIndicator,
} from 'cbioportal-frontend-commons';
import TumorAlleleFreqColumnFormatter, {
    getFormattedFrequencyValue,
} from './TumorAlleleFreqColumnFormatter';

export default class NormalAlleleFreqColumnFormatter {
    public static renderFunction(mutations: Mutation[]) {
        const frequency = NormalAlleleFreqColumnFormatter.getSortValue(
            mutations
        );

        if (frequency) {
            const altReads = mutations[0].normalAltCount;
            const refReads = mutations[0].normalRefCount;

            return TumorAlleleFreqColumnFormatter.mainContent(
                frequency,
                altReads,
                refReads
            );
        } else {
            return <TableCellStatusIndicator status={TableCellStatus.NA} />;
        }
    }

    public static getTextValue(mutations: Mutation[]): string {
        const frequency = NormalAlleleFreqColumnFormatter.getSortValue(
            mutations
        );

        if (frequency) {
            return getFormattedFrequencyValue(frequency);
        }

        return '';
    }

    public static getSortValue(mutations: Mutation[]) {
        const mutation = mutations[0];

        if (!mutation) {
            return null;
        }

        const altReads = mutation.normalAltCount;
        const refReads = mutation.normalRefCount;

        if (altReads < 0 || refReads < 0) {
            return null;
        }

        return altReads / (altReads + refReads);
    }
}