#!/usr/bin/env bash
set -euo pipefail

REPO_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
INSTALL_DIR="/opt/deltabootd_DEVICE_CONTACT"
BIN_NAME="deltarune_device_contact"
OUT_BIN="$INSTALL_DIR/dist/$BIN_NAME"
GREETD_CONFIG="${GREETD_CONFIG:-/etc/greetd/config.toml}"
GREETD_USER="${GREETD_USER:-greeter}"
BACKUP_SUFFIX="$(date +%Y%m%d%H%M%S)"

log() { printf '[install] %s\n' "$*"; }

command -v bun >/dev/null 2>&1 || { echo "bun is required on PATH"; exit 1; }

log "Copying project to $INSTALL_DIR"
sudo mkdir -p "$INSTALL_DIR"
sudo rsync -a --delete \
--exclude node_modules \
--exclude dist \
--exclude .git \
"$REPO_DIR"/ "$INSTALL_DIR"/

log "Installing dependencies in $INSTALL_DIR"
sudo env -C "$INSTALL_DIR" bun install

log "Installing N-API dependencies in $INSTALL_DIR"
sudo env -C "$INSTALL_DIR" bun pm trust --all


log "Building binary -> $OUT_BIN"
sudo env -C "$INSTALL_DIR" bun build --compile --production --outfile="$OUT_BIN" ./src/index.ts
sudo chmod +x "$OUT_BIN"

if [[ -f "$GREETD_CONFIG" ]]; then
    log "Backing up greetd config to ${GREETD_CONFIG}.${BACKUP_SUFFIX}.bak"
    sudo cp "$GREETD_CONFIG" "${GREETD_CONFIG}.${BACKUP_SUFFIX}.bak"
else
    log "greetd config not found, creating $GREETD_CONFIG"
    sudo mkdir -p "$(dirname "$GREETD_CONFIG")"
fi

log "Writing greetd config to launch $OUT_BIN as $GREETD_USER"
sudo tee "$GREETD_CONFIG" >/dev/null <<EOF
[terminal]
vt = 1

[default_session]
command = "bash -c 'IS_CAGE=1 SDL_AUDIODRIVER=dummy SDL_VIDEODRIVER=wayland cage -s -- $OUT_BIN'"
user = "root"
EOF

log "Done. Restart greetd to apply changes."