SimpleUpload.ps1

#Requires -Version 7

# For simplicity's sake, this only accepts uploading 1 file at a time
Param(
    [Parameter(ValueFromPipeline)][string] $File,
    [string] $Token,
    [int] $AlbumID,
    [switch] $Silent = $False
)

IF (!$File) {
    Write-Error "Missing -File argument."
    Exit 1
}

# Constants
Set-Variable MAX_RETRIES -Option Constant -Value 3

# Build request headers dictionary
$Headers = @{
    "Accept" = "application/json"
    "token" = $Token
    "albumid" = "$AlbumID"
}

$Form = @{
    "files[]" = (Get-Item -Path $File)
}

# Upload file within For-loop
For ($i = 1; $i -le $MAX_RETRIES; $i++) {
    If (!$Silent) {
        Write-Output "Uploading ($i/$MAX_RETRIES)..."
    }

    $Request = (Invoke-WebRequest `
        -Method "POST" `
        -Uri "https://safe.fiery.me/api/upload" `
        -Headers $Headers `
        -Form $Form)

    # Parse response body as JSON
    $Parsed = $Request.Content | Out-String | ConvertFrom-Json

    # Break For-loop early if successful
    If ($Parsed.success) {
        Break
    }
}

# Output URL
Write-Output $Parsed.files.url

Requires PowerShell 7+

Sample usage with foo_discord_rich > Advanced > Artwork upload command:

pwsh.exe -Command "\path\to\SimpleUpload.ps1 -File $Input -Token YOUR_TOKEN_HERE -AlbumID YOUR_ALBUM_ID_HERE -Silent"