async navigateToChromosome()

in client/client/app/components/ngbBlastSearchPanel/ngbBlastSearchAlignmentList/ngbBlastSearchAlignment/ngbBlastSearchAlignment.service.js [260:358]
98 lines of code
14 McCabe index (conditional complexity)

    async navigateToChromosome(searchResult, search) {
        const navigationInfo = await this.getNavigationToChromosomeInfo(searchResult);
        if (navigationInfo) {
            const {
                start,
                end,
                chromosome: chromosomeName,
                referenceId
            } = navigationInfo;
            const tracksOptions = {};
            const [reference] = (this.projectContext.references || [])
                .filter(r => r.id === referenceId);
            if (!reference) {
                // eslint-disable-next-line no-console
                console.warn(`Reference ${referenceId} not found`);
                return;
            }
            const blastTrack = {
                name: 'Search results',
                format: 'BLAST',
                isLocal: true,
                projectId: '',
                bioDataItemId: 'Search results',
                id: 0,
                reference,
                referenceId,
            };
            const referenceTrackState = {
                referenceShowForwardStrand: true,
                referenceShowReverseStrand: true,
                referenceShowTranslation: false
            };
            if (referenceId !== this.projectContext.referenceId || !this.projectContext.reference) {
                tracksOptions.reference = reference;
                tracksOptions.shouldAddAnnotationTracks = true;
                tracksOptions.tracks = [reference, blastTrack].map(track => ({
                    ...track,
                    projectId: '',
                    isLocal: true
                }));
                tracksOptions.tracksState = [
                    {...reference, state: referenceTrackState},
                    blastTrack
                ].map(track => ({
                    bioDataItemId: track.name,
                    duplicateId: track.duplicateId,
                    projectId: '',
                    format: track.format,
                    isLocal: true,
                    state: track.state
                }));
            } else if (
                (this.projectContext.tracks || [])
                    .filter(track => track.format === 'BLAST').length === 0
            ) {
                tracksOptions.tracks = (this.projectContext.tracks || []);
                tracksOptions.tracksState = (this.projectContext.tracksState || []);
                const [existingReferenceTrackState] = tracksOptions.tracksState
                    .filter(track => track.format === 'REFERENCE');
                if (existingReferenceTrackState) {
                    existingReferenceTrackState.state = {
                        ...(existingReferenceTrackState.state || {}),
                        ...referenceTrackState
                    };
                }
                const referenceTrackStateIndex = tracksOptions
                    .tracksState.indexOf(existingReferenceTrackState);
                tracksOptions.tracks.push(blastTrack);
                tracksOptions.tracksState.splice(referenceTrackStateIndex + 1, 0, {
                    bioDataItemId: blastTrack.name,
                    duplicateId: blastTrack.duplicateId,
                    projectId: blastTrack.projectId,
                    isLocal: true,
                    format: blastTrack.format
                });
            }
            const [currentReferenceTrack] = this.projectContext.getActiveTracks()
                .filter(track => track.format === 'REFERENCE');
            if (currentReferenceTrack && currentReferenceTrack.instance) {
                currentReferenceTrack.instance.state.referenceShowForwardStrand = true;
                currentReferenceTrack.instance.state.referenceShowReverseStrand = true;
                currentReferenceTrack.instance.reportTrackState(true);
                currentReferenceTrack.instance.requestRender();
            }
            this.projectContext.changeState({
                viewport: {
                    start,
                    end
                },
                chromosome: {
                    name: chromosomeName
                },
                keepBLASTTrack: true,
                ...tracksOptions
            }, false, () => {
                this.setAlignments(searchResult, search);
            });
        }
    }