#!/usr/bin/env bash
# CLIENT installer — sets up the we_monitor GUI client.
# Does NOT install the server (see server/install.sh).
#
# Fresh install:
#   chmod +x install.sh
#   ./install.sh
#
# Update (code already pulled via git):
#   ./install.sh

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_DIR="$(dirname "$SCRIPT_DIR")"

VENV="$SCRIPT_DIR/.venv"
PYTHON="$VENV/bin/python"

IS_UPDATE=false
if [[ -x "$PYTHON" ]]; then
    IS_UPDATE=true
fi

if $IS_UPDATE; then
    echo "==> we_monitor GUI updater"
else
    echo "==> we_monitor GUI installer"
fi
echo "    Project : $REPO_DIR"
echo "    User    : $USER"
echo ""

# ── 1. virtual environment ────────────────────────────────────────────────────
if [[ ! -x "$PYTHON" ]]; then
    echo "==> Creating virtual environment : $VENV"
    python3 -m venv "$VENV"
else
    echo "==> Virtual environment exists   : $VENV"
fi

echo "==> Installing / updating dependencies"
"$VENV/bin/pip" install --quiet --upgrade pip
"$VENV/bin/pip" install --quiet --upgrade -r "$SCRIPT_DIR/requirements.txt"
echo "    Python  : $PYTHON"
echo ""

# ── 2. launcher script ────────────────────────────────────────────────────────
LAUNCHER="$SCRIPT_DIR/run.sh"
cat > "$LAUNCHER" <<EOF
#!/usr/bin/env bash
exec "$PYTHON" "$SCRIPT_DIR/gui_client.py" "\$@"
EOF
chmod +x "$LAUNCHER"
echo "==> Launcher written             : $LAUNCHER"

echo ""
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
if $IS_UPDATE; then
    echo " Update complete."
else
    echo " Installation complete."
    echo ""
    echo " Start the GUI:"
    echo "        $LAUNCHER"
fi
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"