Upload File via API

Hi!

I can't figure out how to upload a file via the API.
Here is the function I'm using in PHP:

public function uploadFile($access_token, $username, $filename, $cfile, $localPath)
    {
        // header
        $headr = [];
        $headr[0] = 'Content-Type: multipart/form-data';
        $headr[1] = 'Authorization: Bearer '.$access_token;
        $headr[2] = 'Content-Disposition: form-data; name="file"; filename="'.$filename.'"';
        $c = curl_init();
        curl_setopt($c, CURLOPT_URL, 'http://localhost/filerun/api.php/files/upload/?path=/ROOT/HOME/users/'.$username.'/'.$filename);
        curl_setopt($c, CURLOPT_HTTPHEADER, $headr);
        curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($c, CURLOPT_CUSTOMREQUEST, "PUT");
        curl_setopt($c, CURLOPT_POSTFIELDS, [
            'file' => $cfile,
        ]);
        curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
        $resp = curl_exec($c);
        curl_close($c);
    }

$cfile contains a curl_file.
This function works with a .pdf file but not with any other type (ex: .jpg, .png)

I tried out with a .txt and here is the result I obtain in filerun:

--------------------------91f363b335b04e0b
Content-Disposition: form-data; name="file"; filename="test.txt"
Content-Type: text/plain

Ceci est un fichier .txt de test
--------------------------91f363b335b04e0b--

while I just wrote in my file:

"Ceci est un fichier .txt de test"

but as mentioned in the doc:

Example

curl -X PUT --header "Authorization: Bearer neY6uAjKO1KqQh98RZZ5DOgYjIPMuu9duvvHGUiN" -T your-file.ext https://demo.filerun.co/api.php/files/upload/?path=/ROOT/HOME/make-new-folder/my-file.ext

• neY6uAjKO1KqQh98RZZ5DOgYjIPMuu9duvvHGUiN - is the previously received “access_token”
• your-file.ext - is the path of the file you want to upload from the local computer
• https://demo.filerun.co - is the URL of your FileRun installation
• /ROOT/HOME/make-new-folder/my-file.ext - is the remote path where you wish the file to be uploaded. FileRun will create the folder “make-new-folder” if it doesn't already exist.

I tried to replace :

curl_setopt($c, CURLOPT_POSTFIELDS, [
            'file' => $cfile,
        ]);

with:

curl_setopt($c, CURLOPT_POSTFIELDS, [
            'file' => $localPath,
        ]);

And it didn't work neither.

Is there anyone having an idea on how to resolve this? That would be so nice!

PS: It's also mentioned in the doc that I could use 

?path=/ROOT/HOME/make-new-folder/my-file.ext

But the make-new-folder is never created and triggers error:

{
    "success": false,
    "error": "The destination folder no longer exists!"
}

Cheers!