#!/bin/bash

#####################################################################################
#                                  ADS-B RECEIVER                                   #
#####################################################################################
#                                                                                   #
# This script is not meant to be executed directly.                                 #
# Instead execute install.sh to begin the installation process.                     #
#                                                                                   #
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#                                                                                   #
# Copyright (c) 2015-2016 Joseph A. Prochazka                                       #
#                                                                                   #
# Permission is hereby granted, free of charge, to any person obtaining a copy      #
# of this software and associated documentation files (the "Software"), to deal     #
# in the Software without restriction, including without limitation the rights      #
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell         #
# copies of the Software, and to permit persons to whom the Software is             #
# furnished to do so, subject to the following conditions:                          #
#                                                                                   #
# The above copyright notice and this permission notice shall be included in all    #
# copies or substantial portions of the Software.                                   #
#                                                                                   #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR        #
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,          #
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE       #
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER            #
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,     #
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE     #
# SOFTWARE.                                                                         #
#                                                                                   #
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #

### VARIABLES

RECEIVER_ROOT_DIRECTORY="${PWD}"
RECEIVER_BASH_DIRECTORY="${RECEIVER_ROOT_DIRECTORY}/bash"
RECEIVER_BUILD_DIRECTORY="${RECEIVER_ROOT_DIRECTORY}/build"

# Component specific variables.

# Component service script variables.

### INCLUDE EXTERNAL SCRIPTS

source ${RECEIVER_BASH_DIRECTORY}/variables.sh
source ${RECEIVER_BASH_DIRECTORY}/functions.sh

## SET INSTALLATION VARIABLES

# Source the automated install configuration file if this is an automated installation.
if [[ "${RECEIVER_AUTOMATED_INSTALL}" = "true" ]] && [[ -s "${RECEIVER_CONFIGURATION_FILE}" ]] ; then
    source ${RECEIVER_CONFIGURATION_FILE}
else
    DUMP1090_BING_MAPS_KEY=`GetConfig "BingMapsAPIKey" "/usr/share/dump1090-mutability/html/config.js"`
    DUMP1090_MAPZEN_KEY=`GetConfig "MapzenAPIKey" "/usr/share/dump1090-mutability/html/config.js"`
fi

### BEGIN SETUP

if [[ "${RECEIVER_AUTOMATED_INSTALL}" = "false" ]] ; then
    clear
    echo -e "\n\e[91m   ${RECEIVER_PROJECT_TITLE}"
fi
echo -e ""
echo -e "\e[92m  Setting up dump1090-fa..."
echo -e ""
echo -e "\e[93m  ------------------------------------------------------------------------------\e[96m"
echo -e ""
if [[ "${RECEIVER_AUTOMATED_INSTALL}" = "false" ]] ; then
    whiptail --backtitle "${RECEIVER_PROJECT_TITLE}" --title "Dump1090-fa Setup" --yesno "Dump 1090 is a Mode-S decoder specifically designed for RTL-SDR devices. Dump1090-fa is a fork of the dump1090-mutability version of dump1090 that is specifically designed for FlightAware's PiAware software.\n\nIn order to use this version of dump1090 FlightAware's PiAware software must be installed as well.\n\n  https://github.com/flightaware/dump1090\n\nContinue setup by installing dump1090-fa?" 14 78
    if [[ $? -eq 1 ]] ; then
        # Setup has been halted by the user.
        echo -e "\e[91m  \e[5mINSTALLATION HALTED!\e[25m"
        echo -e "  Setup has been halted at the request of the user."
        echo -e ""
        echo -e "\e[93m  ------------------------------------------------------------------------------"
        echo -e "\e[92m  Dump1090-fa setup halted.\e[39m"
        echo -e ""
        read -p "Press enter to continue..." CONTINUE
        exit 1
    fi
fi

## CHECK FOR PREREQUISITE PACKAGES

echo -e "\e[95m  Installing packages needed to build and fulfill dependencies...\e[97m"
echo -e ""
CheckPackage git
CheckPackage curl
CheckPackage build-essential
CheckPackage debhelper
CheckPackage cron
CheckPackage rtl-sdr
CheckPackage librtlsdr-dev
CheckPackage libusb-1.0-0-dev
CheckPackage pkg-config
CheckPackage lighttpd
CheckPackage fakeroot
CheckPackage dh-systemd
CheckPackage libncurses5-dev

## DOWNLOAD OR UPDATE THE DUMP1090-FA SOURCE

echo -e ""
echo -e "\e[95m  Preparing the dump1090-fa Git repository...\e[97m"
echo -e ""
if [[ -d "${RECEIVER_BUILD_DIRECTORY}/dump1090/dump1090" ]] && [[ -d "${RECEIVER_BUILD_DIRECTORY}/dump1090/dump1090/.git" ]] ; then
    # A directory with a git repository containing the source code already exists.
    echo -e "\e[94m  Entering the dump1090-fa git repository directory...\e[97m"
    cd ${RECEIVER_BUILD_DIRECTORY}/dump1090/dump1090 2>&1
    echo -e "\e[94m  Updating the local dump1090-fa git repository...\e[97m"
    echo -e ""
    git pull
else
    # A directory containing the source code does not exist in the build directory.
    echo -e "\e[94m  Entering the ADS-B Receiver Project build directory...\e[97m"
    mkdir -vp ${RECEIVER_BUILD_DIRECTORY}/dump1090
    cd ${RECEIVER_BUILD_DIRECTORY}/dump1090 2>&1
    echo -e "\e[94m  Cloning the dump1090-fa git repository locally...\e[97m"
    echo -e ""
    git clone https://github.com/flightaware/dump1090.git
    echo -e ""
fi

## BUILD AND INSTALL THE DUMP1090-FA PACKAGE

echo -e ""
echo -e "\e[95m  Building and installing the dump1090-fa package...\e[97m"
echo -e ""
if [[ ! "${PWD}" = "${RECEIVER_BUILD_DIRECTORY}/dump1090/dump1090" ]] ; then
    echo -e "\e[94m  Entering the dump1090-fa git repository directory...\e[97m"
    cd ${RECEIVER_BUILD_DIRECTORY}/dump1090/dump1090 2>&1
fi
echo -e "\e[94m  Building the dump1090-fa package...\e[97m"
echo -e ""
dpkg-buildpackage -b
echo -e ""
echo -e "\e[94m  Entering the dump1090-fa build directory...\e[97m"
cd ${RECEIVER_BUILD_DIRECTORY}/dump1090 2>&1
echo -e "\e[94m  Installing the dump1090-fa package...\e[97m"
echo -e ""
sudo dpkg -i dump1090-fa_${PIAWARE_VERSION}_*.deb

# Check that the package was installed.
echo -e ""
echo -e "\e[94m  Checking that the dump1090-fa package was installed properly...\e[97m"
if [[ $(dpkg-query -W -f='${STATUS}' dump1090-fa 2>/dev/null | grep -c "ok installed") -eq 0 ]] ; then
    # If the dump1090-fa package could not be installed halt setup.
    echo -e ""
    echo -e "\e[91m  \e[5mINSTALLATION HALTED!\e[25m"
    echo -e "  UNABLE TO INSTALL A REQUIRED PACKAGE."
    echo -e "  SETUP HAS BEEN TERMINATED!"
    echo -e ""
    echo -e "\e[93mThe package \"dump1090-fa\" could not be installed.\e[39m"
    echo -e ""
    echo -e "\e[93m  ------------------------------------------------------------------------------"
    echo -e "\e[92m  Dump1090-fa setup halted.\e[39m"
    echo -e ""
    read -p "Press enter to continue..." CONTINUE
    exit 1
fi

## DUMP1090-FA POST INSTALLATION CONFIGURATION

# Ask for a Bing Maps API key.
if [[ "${RECEIVER_AUTOMATED_INSTALL}" = "false" ]] ; then
    DUMP1090_BING_MAPS_KEY=$(whiptail --backtitle "${RECEIVER_PROJECT_TITLE}" --title "Bing Maps API Key" --nocancel --inputbox "\nProvide a Bing Maps API key here to enable the Bing imagery layer.\nYou can obtain a free key at https://www.bingmapsportal.com/\n\nProviding a Bing Maps API key is not required to continue." 11 78 "${DUMP1090_BING_MAPS_KEY}" 3>&1 1>&2 2>&3)
fi
if [[ -n "${DUMP1090_BING_MAPS_KEY}" ]] ; then
    echo -e "\e[94m  Setting the Bing Maps API Key to ${DUMP1090_BING_MAPS_KEY}...\e[97m"
    ChangeConfig "BingMapsAPIKey" "${DUMP1090_BING_MAPS_KEY}" "/usr/share/dump1090-fa/html/config.js"
fi

# Ask for a Mapzen API key.
if [[ "${RECEIVER_AUTOMATED_INSTALL}" = "false" ]] ; then
    DUMP1090_MAPZEN_KEY=$(whiptail --backtitle "${RECEIVER_PROJECT_TITLE}" --title "Mapzen API Key" --nocancel --inputbox "\nProvide a Mapzen API key here to enable the Mapzen vector tile layer within the dump1090-mutability map. You can obtain a free key at https://mapzen.com/developers/\n\nProviding a Mapzen API key is not required to continue." 13 78 ${DUMP1090_MAPZEN_KEY} 3>&1 1>&2 2>&3)
fi
if [[ -n "${DUMP1090_MAPZEN_KEY}" ]] ; then
    echo -e "\e[94m  Setting the Mapzen API Key to ${DUMP1090_MAPZEN_KEY}...\e[97m"
    ChangeConfig "MapzenAPIKey" "${DUMP1090_MAPZEN_KEY}" "/usr/share/dump1090-fa/html/config.js"
fi

# Download Heywhatsthat.com maximum range rings.
if [[ ! -f "/usr/share/dump1090-fa/html/upintheair.json" ]] ; then
    if [[ "${RECEIVER_AUTOMATED_INSTALL}" = "false" ]] ; then
        if (whiptail --backtitle "${RECEIVER_PROJECT_TITLE}" --title "Heywhaststhat.com Maximum Range Rings" --yesno "Maximum range rings can be added to dump1090-fa usings data obtained from Heywhatsthat.com. In order to add these rings to your dump1090-fa map you will first need to visit http://www.heywhatsthat.com and generate a new panorama centered on the location of your receiver. Once your panorama has been generated a link to the panorama will be displayed in the top left hand portion of the page. You will need the view id which is the series of letters and/or numbers after \"?view=\" in this URL.\n\nWould you like to add heywatsthat.com maximum range rings to your map?" 16 78); then
            # Set the DUMP1090_HEYWHATSTHAT_INSTALL variable to true.
            DUMP1090_HEYWHATSTHAT_INSTALL="true"
            # Ask the user for the Heywhatsthat.com panorama ID.
            DUMP1090_HEYWHATSTHAT_ID_TITLE="Heywhatsthat.com Panorama ID"
            while [[ -z "${DUMP1090_HEYWHATSTHAT_ID}" ]] ; do
                DUMP1090_HEYWHATSTHAT_ID=$(whiptail --backtitle "${RECEIVER_PROJECT_TITLE}" --title "${DUMP1090_HEYWHATSTHAT_ID_TITLE}" --nocancel --inputbox "\nEnter your Heywhatsthat.com panorama ID." 8 78 3>&1 1>&2 2>&3)
                DUMP1090_HEYWHATSTHAT_ID_TITLE="Heywhatsthat.com Panorama ID (REQUIRED)"
            done
            # Ask the user what altitude in meters to set the first range ring.
            DUMP1090_HEYWHATSTHAT_RING_ONE_TITLE="Heywhatsthat.com First Ring Altitude"
            while [[ -z "${DUMP1090_HEYWHATSTHAT_RING_ONE}" ]] ; do
                DUMP1090_HEYWHATSTHAT_RING_ONE=$(whiptail --backtitle "${RECEIVER_PROJECT_TITLE}" --title "${DUMP1090_HEYWHATSTHAT_RING_ONE_TITLE}" --nocancel --inputbox "\nEnter the first ring's altitude in meters.\n(default 3048 meters or 10000 feet)" 8 78 "3048" 3>&1 1>&2 2>&3)
                DUMP1090_HEYWHATSTHAT_RING_ONE_TITLE="Heywhatsthat.com First Ring Altitude (REQUIRED)"
            done
            # Ask the user what altitude in meters to set the second range ring.
            DUMP1090_HEYWHATSTHAT_RING_TWO_TITLE="Heywhatsthat.com Second Ring Altitude"
            while [[ -z "${DUMP1090_HEYWHATSTHAT_RING_TWO}" ]] ; do
                DUMP1090_HEYWHATSTHAT_RING_TWO=$(whiptail --backtitle "${RECEIVER_PROJECT_TITLE}" --title "${DUMP1090_HEYWHATSTHAT_RING_TWO_TITLE}" --nocancel --inputbox "\nEnter the second ring's altitude in meters.\n(default 12192 meters or 40000 feet)" 8 78 "12192" 3>&1 1>&2 2>&3)
                DUMP1090_HEYWHATSTHAT_RING_TWO_TITLE="Heywhatsthat.com Second Ring Altitude (REQUIRED)"
            done
        fi
    fi
    # If the Heywhatsthat.com maximum range rings are to be added download them now.
    if [[ "${DUMP1090_HEYWHATSTHAT_INSTALL}" = "true" ]] ; then
        echo -e "\e[94m  Downloading JSON data pertaining to the supplied panorama ID...\e[97m"
        echo -e ""
        sudo wget -O /usr/share/dump1090-fa/html/upintheair.json "http://www.heywhatsthat.com/api/upintheair.json?id=${DUMP1090_HEYWHATSTHAT_ID}&refraction=0.25&alts=${DUMP1090_HEYWHATSTHAT_RING_ONE},${DUMP1090_HEYWHATSTHAT_RING_TWO}"
    fi
fi

### SETUP COMPLETE

# Return to the project root directory.
echo -e "\e[94m  Entering the ADS-B Receiver Project root directory...\e[97m"
cd ${RECEIVER_ROOT_DIRECTORY} 2>&1

echo -e ""
echo -e "\e[93m  ------------------------------------------------------------------------------"
echo -e "\e[92m  Dump1090-fa setup is complete.\e[39m"
echo -e ""
if [[ "${RECEIVER_AUTOMATED_INSTALL}" = "false" ]] ; then
    read -p "Press enter to continue..." CONTINUE
fi

exit 0