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Can compress received image

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This commit is contained in:
Pierre HUBERT
2019-11-30 19:56:32 +01:00
parent 72a4ba79f2
commit 2181e17245
3 changed files with 438 additions and 41 deletions
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39
src/entities/RequestHandler.ts
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@ -4,6 +4,8 @@ import { APIClient } from "./APIClient";
import { checkMail } from "../utils/StringUtils";
import { AccountHelper } from "../helpers/AccountHelper";
import { UploadedFile } from "express-fileupload";
import { prepareFileCreation, generateNewUserDataFileName, pathUserData } from "../utils/UserDataUtils";
import * as sharp from 'sharp';
/**
* Response to a request
@ -175,7 +177,7 @@ export class RequestHandler {
*
* @param name The name of the posted file
*/
private GetUploadedFile(name: string) : undefined | UploadedFile {
private getUploadedFile(name: string) : undefined | UploadedFile {
if(!this.req.files)
return undefined;
@ -192,9 +194,42 @@ export class RequestHandler {
* @param name The name of the file to check
*/
public hasFile(name: string) : boolean {
return this.GetUploadedFile(name) != undefined;
return this.getUploadedFile(name) != undefined;
}
/**
* Save an image in user data directory
*
* @param postField The name of the POST field
* @param folder Target folder in user data directory
* @param maxW Maximum width of the image
* @param maxH Maximum height of the image
*/
public async savePostImage(postField: string, folder: string, maxW: number, maxH: number) : Promise<string> {
const file = this.getUploadedFile(postField);
if(file == undefined)
this.error(400, "File '"+postField+"' is missing in the request !");
const targetUserDataFolder = prepareFileCreation(this.getUserId(), folder);
const targetFilePath = generateNewUserDataFileName(targetUserDataFolder, "png");
const targetSysPath = pathUserData(targetFilePath, true);
// Process image size
let img = sharp(file.data);
const stats = await img.metadata();
if(stats.width > maxW || stats.height > maxH) {
if(stats.width > maxW)
img = img.resize(maxW, Math.floor((stats.height*maxW)/stats.width));
else
img = img.resize(Math.floor((stats.width*maxH)/stats.height), maxH);
}
// Save image
await img.png().toFile(targetSysPath);
return targetFilePath;
}
/**
* Validate API tokens