#!/usr/bin/env bash
#
# Convenience runner for the Discord netradio relay.
#
# On first run it creates a local virtualenv and installs dependencies; on
# every run it starts the bot, which streams for the configured duration and
# then exits. Safe to call directly from cron.
#
# Cron example — transmit for 5 minutes every day at 18:00:
#   0 18 * * * /path/to/run.sh >> /path/to/radio.log 2>&1
#
# The bot token can be provided via the DISCORD_BOT_TOKEN environment variable
# or the "token" field in radioconfig.json.

set -euo pipefail

# Resolve the directory this script lives in, so cron's cwd doesn't matter.
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

VENV_DIR="$SCRIPT_DIR/.venv"
PYTHON="${PYTHON:-python3}"

# Require ffmpeg — discord.py shells out to it for audio.
if ! command -v ffmpeg >/dev/null 2>&1; then
  echo "ERROR: ffmpeg not found on PATH. Install it (e.g. 'sudo pacman -S ffmpeg')." >&2
  exit 1
fi

# Create the virtualenv and install deps on first run.
if [[ ! -d "$VENV_DIR" ]]; then
  echo "Setting up virtualenv in $VENV_DIR ..."
  "$PYTHON" -m venv "$VENV_DIR"
  "$VENV_DIR/bin/pip" install --upgrade pip >/dev/null
  "$VENV_DIR/bin/pip" install -r "$SCRIPT_DIR/requirements.txt"
fi

exec "$VENV_DIR/bin/python" "$SCRIPT_DIR/radio_bot.py" "$@"