#!/bin/sh

# Time to wait (in seconds) after resetting the BT chip to allow /dev/btusb0 to
# be created.
BT_RESET_DELAY=1

# Time to wait (in seconds) after starting bsa_server to allow the BT chip to be
# fully initialized.
BT_BSA_STARTUP_DELAY=2

case "$1" in
  start)
    . /etc/utils.sh

    BT_MAC=$(hnvram -rq MAC_ADDR_BT)
    BT_NAME=$(cat /etc/platform)

    # A few platforms are populated with MAC_ADDR, but not MAC_ADDR_BT.
    if [ -z "$BT_MAC" ]; then
      MAC=$(hnvram -rq MAC_ADDR)
      if [ ! -z "$MAC" ]; then
        BT_MAC=$(echo "$MAC" | (
          IFS=: read m1 m2 m3 m4 m5 m6; \
          decimal=$(printf "%d" "0x$m6"); \
          m6=$(printf "%02x" $(($decimal + 2))); \
          echo "$m1:$m2:$m3:$m4:$m5:$m6"
        ))
      fi
    fi

    # Run the following in a sub-shell in the background to avoid
    # impacting boot time.
    (
      if [ -e /dev/btusb0 ]; then
        # BCM20702 USB Bluetooth chip
        BSATTY=/dev/btusb0
        BSAFIRMWARE="-p /etc/bsa/BCM20702.hcd"

        wl reset_bt_chip 2>&1
        sleep $BT_RESET_DELAY
      elif [ "$(cat /etc/platform)" = GFHD200 ]; then
        # BCM20705 serial Bluetooth chip
        BSATTY=/dev/ttyS1
        BSAFIRMWARE="-p /etc/bsa/BCM20705.hcd"
      fi

      if [ ! -z $BSATTY ]; then
        # Provide a mechanism for other processes to determine the Bluetooth MAC address
        echo "$BT_MAC" >/tmp/btmacaddress

        cd /user/bsa
        (
          LD_PRELOAD=/lib/stdoutline.so babysit 30 \
          bsa_server -d $BSATTY $BSAFIRMWARE -hci 2>&1 | logos bsa &
        )
        sleep $BT_BSA_STARTUP_DELAY

        # Start app_gtv.
        babysit 30 app_gtv -a "$BT_MAC" -n "$BT_NAME" -k 2>&1 | logos app_gtv &
      fi

    ) &
    ;;
  stop)
    pkillwait -x app_gtv
    pkillwait -x bsa_server
    ;;
  restart)
    $0 stop; $0 start
    ;;
  *)
    echo "Usage: $0 {start|stop|restart}"
    exit 1
esac