#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Wifi functions

# License
# =======
#
# Copyright (C) 2015-2016 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

WIFI_CHANNEL=2
WIFI_INTERFACE=wlan0
WIFI_TYPE='wpa2-psk'
WIFI_SSID=
WIFI_PASSPHRASE=
WIFI_HOTSPOT='no'
WIFI_NETWORKS_FILE=~/${PROJECT_NAME}-wifi.cfg

# repo for atheros AR9271 wifi driver
ATHEROS_WIFI_REPO="https://github.com/qca/open-ath9k-htc-firmware.git"

function setup_wifi {
    if [[ $SYSTEM_TYPE == "mesh"* ]]; then
        return
    fi
    if [ ! $WIFI_SSID ]; then
        return
    fi
    if [ ${#WIFI_SSID} -lt 2 ]; then
        return
    fi
    if grep -Fxq "setup_wifi" $COMPLETION_FILE; then
        return
    fi

    HOTSPOT='no'
    if [[ $WIFI_HOTSPOT != 'no' ]]; then
        HOTSPOT='yes'
    fi

    if [ -f $WIFI_NETWORKS_FILE ]; then
        ${PROJECT_NAME}-wifi -i $WIFI_INTERFACE --networks $WIFI_NETWORKS_FILE
        echo 'setup_wifi' >> $COMPLETION_FILE
        return
    fi

    if [[ $WIFI_TYPE != 'none' ]]; then
        if [ ! $WIFI_PASSPHRASE ]; then
            echo $'No wifi passphrase was given'
            return
        fi
        if [ ${#WIFI_PASSPHRASE} -lt 2 ]; then
            echo $'Wifi passphrase was too short'
            return
        fi
        ${PROJECT_NAME}-wifi -i $WIFI_INTERFACE -s $WIFI_SSID -t $WIFI_TYPE -p $WIFI_PASSPHRASE --hotspot $HOTSPOT --networks $WIFI_NETWORKS_FILE
    else
        ${PROJECT_NAME}-wifi -i $WIFI_INTERFACE -s $WIFI_SSID -t $WIFI_TYPE --hotspot $HOTSPOT --networks $WIFI_NETWORKS_FILE
    fi
    echo 'setup_wifi' >> $COMPLETION_FILE
}

# ath9k_htc driver
function install_atheros_wifi {
    if grep -Fxq "install_atheros_wifi" $COMPLETION_FILE; then
        return
    fi
    if [ $INSTALLING_ON_BBB != "yes" ]; then
        return
    fi
    if [[ $ENABLE_BABEL != "yes" && $ENABLE_BATMAN != "yes" && $ENABLE_CJDNS != "yes" ]]; then
        return
    fi
    if [ -d $INSTALL_DIR/open-ath9k-htc-firmware ]; then
        return
    fi
    # have drivers already been installed ?
    if [ -f /lib/firmware/htc_9271.fw ]; then
        return
    fi
    apt-get -y install build-essential cmake git m4 texinfo
    if [ ! -d $INSTALL_DIR ]; then
        mkdir -p $INSTALL_DIR
    fi
    cd $INSTALL_DIR
    if [ ! -d $INSTALL_DIR/open-ath9k-htc-firmware ]; then
        function_check git_clone
        git_clone $ATHEROS_WIFI_REPO $INSTALL_DIR/open-ath9k-htc-firmware
        if [ ! "$?" = "0" ]; then
            rm -rf $INSTALL_DIR/open-ath9k-htc-firmware
            exit 74283
        fi
    fi
    cd $INSTALL_DIR/open-ath9k-htc-firmware
    git checkout 1.4.0
    make toolchain
    if [ ! "$?" = "0" ]; then
        rm -rf $INSTALL_DIR/open-ath9k-htc-firmware
        exit 24820
    fi
    make firmware
    if [ ! "$?" = "0" ]; then
        rm -rf $INSTALL_DIR/open-ath9k-htc-firmware
        exit 63412
    fi
    cp target_firmware/*.fw /lib/firmware/
    if [ ! "$?" = "0" ]; then
        exit 74681
    fi
    echo 'install_atheros_wifi' >> $COMPLETION_FILE
}

# NOTE: deliberately no exit 0
