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import type { FastifyRequest } from "fastify";
import { AppError } from "@ontrack/backend-common";
import { parseTrackRating } from "./track-rating.js";
export type ParsedTrackMultipart = {
fileName: string;
buffer: Buffer;
name: string;
trackTypeCode: "ROAD" | "MTB";
routeLayoutCode: "CIRCULAR" | "LINEAR";
locality: string;
trackName: string;
distanceKm: number;
elevationM: number;
surfaceQuality: number;
difficulty: number;
scenery: number;
safety: number;
description: string;
};
function parseNonNegativeInt(raw: string, field: string): number {
const n = Number.parseInt(raw, 10);
if (!Number.isFinite(n) || n < 0) {
throw new AppError(400, "INVALID_FIELD", `Invalid integer field: ${field}`);
}
return n;
}
function parseDistance(raw: string): number {
const n = Number.parseFloat(raw);
if (!Number.isFinite(n) || n < 0) {
throw new AppError(400, "INVALID_FIELD", "Invalid distanceKm");
}
return n;
}
/** Поле файла в multipart: `file` (один GPX). Текстовые поля — как в JSON GET /tracks. */
export async function parseTrackMultipart(request: FastifyRequest): Promise<ParsedTrackMultipart> {
const textFields: Record<string, string> = {};
let fileBuffer: Buffer | null = null;
let rawFilename = "";
const parts = request.parts();
for await (const part of parts) {
if (part.type === "file") {
fileBuffer = await part.toBuffer();
rawFilename = part.filename ?? "";
} else {
textFields[part.fieldname] = String(part.value ?? "");
}
}
if (!fileBuffer || fileBuffer.length === 0) {
throw new AppError(400, "MISSING_FILE", "Multipart field `file` with GPX content is required");
}
const base = path.basename(rawFilename || "upload.gpx");
let fileName = base.trim().length > 0 ? base : `upload-${Date.now()}.gpx`;
if (!/\.gpx$/i.test(fileName)) {
fileName = `${fileName}.gpx`;
}
if (fileName.includes("/") || fileName.includes("\\")) {
throw new AppError(400, "INVALID_FILE_NAME", "Invalid GPX file name");
}
const name = (textFields.name ?? "").trim();
const trackName = (textFields.trackName ?? "").trim();
const locality = (textFields.locality ?? "").trim();
const description = (textFields.description ?? "").trim();
const ttRaw = (textFields.trackTypeCode ?? "").trim().toUpperCase();
const rlRaw = (textFields.routeLayoutCode ?? "").trim().toUpperCase();
if (!name || !trackName) {
throw new AppError(400, "MISSING_FIELD", "name and trackName are required");
}
if (ttRaw !== "ROAD" && ttRaw !== "MTB") {
throw new AppError(400, "INVALID_TRACK_TYPE", "trackTypeCode must be ROAD or MTB");
}
if (rlRaw !== "CIRCULAR" && rlRaw !== "LINEAR") {
throw new AppError(400, "INVALID_ROUTE_LAYOUT", "routeLayoutCode must be CIRCULAR or LINEAR");
}
const dm = (textFields.distanceKm ?? "").trim();
const el = (textFields.elevationM ?? "").trim();
const sq = (textFields.surfaceQuality ?? "").trim();
const df = (textFields.difficulty ?? "").trim();
const sc = (textFields.scenery ?? "").trim();
const sf = (textFields.safety ?? "").trim();
if (!dm || !el || !sq || !df || !sc || !sf) {
throw new AppError(400, "MISSING_FIELD", "Numeric metric fields are required");
}
return {
fileName,
buffer: fileBuffer,
name,
trackTypeCode: ttRaw as "ROAD" | "MTB",
routeLayoutCode: rlRaw as "CIRCULAR" | "LINEAR",
locality,
trackName,
distanceKm: parseDistance(dm),
elevationM: parseNonNegativeInt(el, "elevationM"),
surfaceQuality: parseTrackRating(sq, "surfaceQuality"),
difficulty: parseTrackRating(df, "difficulty"),
scenery: parseTrackRating(sc, "scenery"),
safety: parseTrackRating(sf, "safety"),
description,
};
}
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