DEPENDENCIES

#!/bin/bash
# Dependencies installation script for Goby

if [[ $UID -ne 0 ]]; then printf "You must run this script as root. Use 'sudo' in Ubuntu. \n" 1>&2; exit 1; fi

usage()
{
    echo -e "Usage: DEPENDENCIES script"
    echo -e "\t$0 [options]"
    echo -e ""
    echo -e "Purpose: this script installs dependencies for building Goby3 using the Debian and Ubuntu packages provided in packages.gobysoft.org"
    echo -e ""
    echo -e "Example (without arguments, this script installs the minimum dependencies required for building the core Goby3 code from packages.gobysoft.org/{ubuntu|debian}/release):"
    echo -e "\t$0"
    echo -e ""
    echo -e "" 
    echo -e "Options:"
    echo -e "\t-h\t\tShow help."
    echo -e "\t-g\t\tAlso install GUI-related dependencies"
    echo -e "\t-m\t\tAlso install MOOS-related dependencies"
    echo -e "\t-a\t\tAlso install all dependencies used to build the code in the Debian package (apt-get build-dep goby3 --arch-only)."
    echo -e "\t-d\t\tAlso install dependencies for building documentation  (apt-get build-dep goby3 --indep-only)"
    echo -e "\t-c\t\tUse 'continuous' series on packages.gobysoft.org instead of 'release' when resolving and installing dependencies"
}

fail()
{
    echo "Your operating system and/or release version is not supported by this script."
    echo -e "Please read the 'Build-Depends:' list from\n\thttps://github.com/GobySoft/goby-debian/blob/3.0/control\nto access the current list of Goby3 build dependences for Debian/Ubuntu. You can use this list to help find the correct dependencies for your operating system"
    exit 1 
}

validate_url()
{
    if [[ `wget -S --spider $1  2>&1 | grep 'HTTP/1.1 200 OK'` ]];
    then return 0;
    else return 1;
    fi
}

# sets list of dependencies for the package in $DEPENDS_RETVAL
DEPENDS_RETVAL=
depends()
{
    DEPENDS_RETVAL=$(apt-cache depends $1 | egrep "Depends|Recommends" | egrep --invert-match libgoby3-dev | egrep --invert-match "<.*>|dccl3" | sed 's/.*: //' | tr '\r\n' ' ')
}

PACKAGE_SERIES=release

INSTALL_ALL_DEPENDS=false
INSTALL_DOC_DEPENDS=false
INSTALL_MOOS_DEPENDS=false
INSTALL_GUI_DEPENDS=false

while getopts ":hdcgma" opt; do
    case $opt in
        h) usage; exit 1 ;;
        c) PACKAGE_SERIES=continuous ;;
        g) INSTALL_GUI_DEPENDS=true ;;
        m) INSTALL_MOOS_DEPENDS=true ;;
        a) INSTALL_ALL_DEPENDS=true ;;
        d) INSTALL_DOC_DEPENDS=true ;;
        \?)
            echo "Invalid option: -$OPTARG. For help use -h."
            exit  1
            ;;
        :)
            echo "Option -$OPTARG requires an argument. For help use -h."
            exit 1
    esac
done


echo "==== Determining Operating System and Release ===="
OS_RELEASE_FILE=/etc/os-release

[ -z ${OS_RELEASE_FILE} ] && echo "Could not find ${OS_RELEASE_FILE} file to auto-detect operating system ID and version" && fail

# detect distro ID (e.g. "debian")
OS_ID=$(egrep "^ID=" ${OS_RELEASE_FILE} | cut -d = -f 2)

if [[ "$OS_ID" == raspbian ]]; then
   OS_ID=debian
fi

case $OS_ID in
    ubuntu)
        RELEASE_CODENAME=$(egrep "^VERSION_CODENAME=" ${OS_RELEASE_FILE} | cut -d = -f 2)
    ;;
    debian)
        RELEASE_CODENAME=$(egrep "^VERSION=" ${OS_RELEASE_FILE} | sed 's/^.*(\([a-z]*\)).*$/\1/')
    ;;
    *)
        fail
        ;;
esac

case $OS_ID in
    ubuntu|debian)
        echo "Operating System: $OS_ID"
        echo "Release: $RELEASE_CODENAME"

        echo "==== Installing packages required to run this script ==="
        (set -x; apt-get update -qq && apt-get -y install wget dirmngr apt-transport-https)
        
        PACKAGES_URL_BASE="https://packages.gobysoft.org/${OS_ID}/${PACKAGE_SERIES}/"

        echo "==== Checking dependencies for your OS (${OS_ID}) and release (${RELEASE_CODENAME}) on packages.gobysoft.org ===="
        if validate_url ${PACKAGES_URL_BASE}/${RELEASE_CODENAME}/Release; then
            echo "Release codename found"
            echo "==== Adding packages.gobysoft.org Debian repository ===="
            (set -x; echo -e "deb ${PACKAGES_URL_BASE} ${RELEASE_CODENAME}/\ndeb-src ${PACKAGES_URL_BASE} ${RELEASE_CODENAME}/" > /etc/apt/sources.list.d/gobysoft_${PACKAGE_SERIES}.list && \
                 apt-key adv --recv-key --keyserver keyserver.ubuntu.com 19478082E2F8D3FE &&
                 apt-get update -qq)
        else
            echo "Release codename not found on packages.gobysoft.org."
            fail
        fi

        echo "==== Installing dependencies ===="

        depends "libgoby3-dev"
        (set -x; apt-get install --install-recommends -y cmake build-essential $DEPENDS_RETVAL)
        
        # install clang if GCC is less than 7.2
        dpkg --compare-versions `dpkg-query --showformat='${Version}' --show gcc` ">=" 4:7.2~ ||  (set -x; echo "Installing clang as your GCC version is less than 7.2"; apt-get install clang)
        
        [[ "${INSTALL_MOOS_DEPENDS}" == "true" ]] && (depends "libgoby3-moos-dev"; set -x; apt-get install $DEPENDS_RETVAL)
        [[ "${INSTALL_GUI_DEPENDS}" == "true" ]] && (depends "libgoby3-gui-dev"; set -x; apt-get install $DEPENDS_RETVAL)
        [[ "${INSTALL_DOC_DEPENDS}" == "true" ]] && (set -x; apt-get build-dep goby3 --indep-only)
        [[ "${INSTALL_ALL_DEPENDS}" == "true" ]] && (set -x; apt-get build-dep goby3 --arch-only)

        ;;
    *)
        fail
        ;;
esac