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safer reverse

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This commit is contained in:
vcoppe 2024-06-27 10:07:07 +02:00
parent 90e73a2739
commit f08b2b094f
1 changed files with 32 additions and 29 deletions
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61
gpx/src/gpx.ts
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@ -17,8 +17,8 @@ export abstract class GPXTreeElement<T extends GPXTreeElement<any>> {
abstract get children(): ReadonlyArray<T>;
abstract getNumberOfTrackPoints(): number;
abstract getStartTimestamp(): Date;
abstract getEndTimestamp(): Date;
abstract getStartTimestamp(): Date | undefined;
abstract getEndTimestamp(): Date | undefined;
abstract getStatistics(): GPXStatistics;
abstract getSegments(): TrackSegment[];
@ -40,11 +40,17 @@ abstract class GPXTreeNode<T extends GPXTreeElement<any>> extends GPXTreeElement
return this.children.reduce((acc, child) => acc + child.getNumberOfTrackPoints(), 0);
}
getStartTimestamp(): Date {
getStartTimestamp(): Date | undefined {
if (this.children.length === 0) {
return undefined;
}
return this.children[0].getStartTimestamp();
}
getEndTimestamp(): Date {
getEndTimestamp(): Date | undefined {
if (this.children.length === 0) {
return undefined;
}
return this.children[this.children.length - 1].getEndTimestamp();
}
@ -65,19 +71,28 @@ abstract class GPXTreeNode<T extends GPXTreeElement<any>> extends GPXTreeElement
return produce(this, (draft: Draft<GPXTreeNode<T>>) => {
let og = getOriginal(draft);
if (!originalNextTimestamp && !newPreviousTimestamp) {
originalNextTimestamp = og.children[og.children.length - 1].getEndTimestamp();
newPreviousTimestamp = og.children[0].getStartTimestamp();
originalNextTimestamp = og.getEndTimestamp();
newPreviousTimestamp = og.getStartTimestamp();
}
draft.children.reverse();
let children = og.children.slice();
children.reverse();
for (let i = 0; i < og.children.length; i++) {
let originalStartTimestamp = og.children[og.children.length - i - 1].getStartTimestamp();
draft.children[i] = draft.children[i]._reverse(originalNextTimestamp, newPreviousTimestamp);
children[i] = children[i]._reverse(originalNextTimestamp, newPreviousTimestamp);
originalNextTimestamp = originalStartTimestamp;
newPreviousTimestamp = draft.children[i].getEndTimestamp();
newPreviousTimestamp = children[i].getEndTimestamp();
}
if (this instanceof GPXFile) {
// @ts-ignore
draft.trk = freeze(children);
} else if (this instanceof Track) {
// @ts-ignore
draft.trkseg = freeze(children);
}
});
}
@ -94,24 +109,6 @@ abstract class GPXTreeLeaf extends GPXTreeElement<GPXTreeLeaf> {
}
}
// A class that represents a set of GPX files
export class GPXFiles extends GPXTreeNode<GPXFile> {
readonly files: ReadonlyArray<GPXFile>;
constructor(files: GPXFile[]) {
super();
this.files = files;
}
get children(): ReadonlyArray<GPXFile> {
return this.files;
}
toGeoJSON(): GeoJSON.FeatureCollection[] {
return this.children.map((child) => child.toGeoJSON());
}
}
// A class that represents a GPX file
export class GPXFile extends GPXTreeNode<Track>{
[immerable] = true;
@ -745,11 +742,17 @@ export class TrackSegment extends GPXTreeLeaf {
return this.trkpt.length;
}
getStartTimestamp(): Date {
getStartTimestamp(): Date | undefined {
if (this.trkpt.length === 0) {
return undefined;
}
return this.trkpt[0].time;
}
getEndTimestamp(): Date {
getEndTimestamp(): Date | undefined {
if (this.trkpt.length === 0) {
return undefined;
}
return this.trkpt[this.trkpt.length - 1].time;
}