# save first parameter
$ARGS = $args
$ARG1 = $args[0]
# parent dir of this script (should be the getdown app dir)
$DIR = Split-Path $MyInvocation.MyCommand.Path -Parent

# insert an "-open" parameter to Jalview's ARGS if ARG1 is non-zero-length, and not "open" or starts with a "-"
if ( $ARG1.length -gt 0 -and (-not $ARG1.StartsWith("-")) -and $ARG1 -ne "open" ) {
  $ARGS = "-open " + $ARGS
}

$APPDIR = $DIR
$JAVA = "${APPDIR}/jre/bin/java.exe"
$GETDOWNTXT = "${APPDIR}/getdown.txt"

if (-not (Test-Path -Path "${GETDOWNTXT}")) {
  throw "Cannot find getdown.txt"
}

if (-not (Test-Path -Path "${JAVA}")) {
  Write-Host "Cannot find bundled java.exe. Using system and hoping for the best!"
  $JAVA = "java.exe"
}

$CLASSPATH = (Select-String -Path "${GETDOWNTXT}" -AllMatches -Pattern "code\s*=\s*(.*)$" | foreach { "$DIR/$($_.Matches.Groups[1].Value)" }) -join ":"

Invoke-Expression -Command "${JAVA} -cp ${CLASSPATH} jalview.bin.Launcher $ARGS"