#!/bin/bash
#
# code-server.job — run code-server inside a Slurm job so VSCode-on-the-web
# lives on a compute node instead of the login node.
#
# MIT License
#
# Copyright (c) 2023-2026 Marc Benedí San Millán
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

#SBATCH --job-name=code-server
#SBATCH --time=04:00:00
#SBATCH --output=%x_%j_%N.log

#SBATCH --mem=8gb
#SBATCH --gpus=1
#SBATCH --cpus-per-task=4

#SBATCH -p submit

# ⚠️  Generate a strong password — do NOT ship 1234 to a real cluster.
PASSWORD=$(openssl rand -base64 24)
PORT=$(python -c 'import socket; s=socket.socket(); s.bind(("", 0)); print(s.getsockname()[1]); s.close()')

echo "********************************************************************"
echo "Starting code-server in Slurm"
echo "Environment information:"
echo "Date:" $(date)
echo "Allocated node:" $(hostname)
echo "Node IP:" $(hostname -I | awk '{print $1}')
echo "Path:" $(pwd)
echo "Password to access VSCode:" $PASSWORD
echo "Listening on:" $PORT
echo "********************************************************************"

PASSWORD=$PASSWORD code-server --bind-addr 0.0.0.0:$PORT --auth password --disable-telemetry