#!/usr/bin/env bash
# $RDM_DIR should be defined

# RDM Functions
# ================

DEPS_DIR=$RDM_DIR/3rdparty/

function build_breakpad {
    cd $DEPS_DIR/gbreakpad/
    git clone --depth 1 -v https://chromium.googlesource.com/linux-syscall-support src/third_party/lss || true
    if [ ! -d "src/third_party/lss" ]; then
        echo "Cannot clone linux-syscall-support repo"
        exit 2
    fi
    touch README
    ./configure
    make -s -j 2
}

function build_libssh2 {
    pushd $DEPS_DIR/qredisclient/3rdparty/qsshclient && ./configure && popd
}

function print_line {
    echo "===================================================================="
}


function print_title {
    print_line
    echo ${1}
    print_line
}

function is_ppa_installed {
    for APT in `find /etc/apt/ -name \*.list`; do
        grep -o "^deb http://ppa.launchpad.net/[a-z0-9\-]\+/[a-z0-9\-]\+" $APT | while read ENTRY ; do
            USER=`echo $ENTRY | cut -d/ -f4`
            PPA=`echo $ENTRY | cut -d/ -f5`
            if [ "${1}" == "$USER/$PPA" ]; then
                return 1
            fi
        done
    done

    return 0
}

# Distro Functions
# ================

# Determine OS Vendor, Release and Update
# Tested with OS/X, Ubuntu, RedHat, CentOS, Fedora
# Returns results in global variables:
# ``os_VENDOR`` - vendor name: ``Ubuntu``, ``Fedora``, etc
# ``os_RELEASE`` - major release: ``14.04`` (Ubuntu), ``20`` (Fedora)
# ``os_UPDATE`` - update: ex. the ``5`` in ``RHEL6.5``
# ``os_PACKAGE`` - package type: ``deb`` or ``rpm``
# ``os_CODENAME`` - vendor's codename for release: ``snow leopard``, ``trusty``
os_VENDOR=""
os_RELEASE=""
os_UPDATE=""
os_PACKAGE=""
os_CODENAME=""

# GetOSVersion
function GetOSVersion {

    # Figure out which vendor we are
    if [[ -x "`which sw_vers 2>/dev/null`" ]]; then
        # OS/X
        os_VENDOR=`sw_vers -productName`
        os_RELEASE=`sw_vers -productVersion`
        os_UPDATE=${os_RELEASE##*.}
        os_RELEASE=${os_RELEASE%.*}
        os_PACKAGE=""
        if [[ "$os_RELEASE" =~ "10.7" ]]; then
            os_CODENAME="lion"
        elif [[ "$os_RELEASE" =~ "10.6" ]]; then
            os_CODENAME="snow leopard"
        elif [[ "$os_RELEASE" =~ "10.5" ]]; then
            os_CODENAME="leopard"
        elif [[ "$os_RELEASE" =~ "10.4" ]]; then
            os_CODENAME="tiger"
        elif [[ "$os_RELEASE" =~ "10.3" ]]; then
            os_CODENAME="panther"
        else
            os_CODENAME=""
        fi
    elif [[ -x $(which lsb_release 2>/dev/null) ]]; then
        os_VENDOR=$(lsb_release -i -s)
        os_RELEASE=$(lsb_release -r -s)
        os_UPDATE=""
        os_PACKAGE="rpm"
        if [[ "Debian,Ubuntu,LinuxMint,elementary" =~ $os_VENDOR ]]; then
            os_PACKAGE="deb"
        elif [[ "SUSE LINUX" =~ $os_VENDOR ]]; then
            lsb_release -d -s | grep -q openSUSE
            if [[ $? -eq 0 ]]; then
                os_VENDOR="openSUSE"
            fi
        elif [[ $os_VENDOR == "openSUSE project" ]]; then
            os_VENDOR="openSUSE"
        elif [[ $os_VENDOR =~ Red.*Hat ]]; then
            os_VENDOR="Red Hat"
        fi
        os_CODENAME=$(lsb_release -c -s)
    elif [[ -r /etc/redhat-release ]]; then
        # Red Hat Enterprise Linux Server release 5.5 (Tikanga)
        # Red Hat Enterprise Linux Server release 7.0 Beta (Maipo)
        # CentOS release 5.5 (Final)
        # CentOS Linux release 6.0 (Final)
        # Fedora release 16 (Verne)
        # XenServer release 6.2.0-70446c (xenenterprise)
        # Oracle Linux release 7
        os_CODENAME=""
        for r in "Red Hat" CentOS Fedora XenServer; do
            os_VENDOR=$r
            if [[ -n "`grep \"$r\" /etc/redhat-release`" ]]; then
                ver=`sed -e 's/^.* \([0-9].*\) (\(.*\)).*$/\1\|\2/' /etc/redhat-release`
                os_CODENAME=${ver#*|}
                os_RELEASE=${ver%|*}
                os_UPDATE=${os_RELEASE##*.}
                os_RELEASE=${os_RELEASE%.*}
                break
            fi
            os_VENDOR=""
        done
        if [ "$os_VENDOR" = "Red Hat" ] && [[ -r /etc/oracle-release ]]; then
            os_VENDOR=OracleLinux
        fi
        os_PACKAGE="rpm"
    elif [[ -r /etc/SuSE-release ]]; then
        for r in openSUSE "SUSE Linux"; do
            if [[ "$r" = "SUSE Linux" ]]; then
                os_VENDOR="SUSE LINUX"
            else
                os_VENDOR=$r
            fi

            if [[ -n "`grep \"$r\" /etc/SuSE-release`" ]]; then
                os_CODENAME=`grep "CODENAME = " /etc/SuSE-release | sed 's:.* = ::g'`
                os_RELEASE=`grep "VERSION = " /etc/SuSE-release | sed 's:.* = ::g'`
                os_UPDATE=`grep "PATCHLEVEL = " /etc/SuSE-release | sed 's:.* = ::g'`
                break
            fi
            os_VENDOR=""
        done
        os_PACKAGE="rpm"
    # If lsb_release is not installed, we should be able to detect Debian OS
    elif [[ -f /etc/debian_version ]] && [[ $(cat /proc/version) =~ "Debian" ]]; then
        os_VENDOR="Debian"
        os_PACKAGE="deb"
        os_CODENAME=$(awk '/VERSION=/' /etc/os-release | sed 's/VERSION=//' | sed -r 's/\"|\(|\)//g' | awk '{print $2}')
        os_RELEASE=$(awk '/VERSION_ID=/' /etc/os-release | sed 's/VERSION_ID=//' | sed 's/\"//g')
    fi
    export os_VENDOR os_RELEASE os_UPDATE os_PACKAGE os_CODENAME
}

# Translate the OS version values into common nomenclature
# Sets global ``DISTRO`` from the ``os_*`` values
declare DISTRO

function GetDistro {
    GetOSVersion
    if [[ "$os_VENDOR" =~ (Ubuntu) || "$os_VENDOR" =~ (Debian) ]]; then
        # 'Everyone' refers to Ubuntu / Debian releases by the code name adjective
        DISTRO=$os_CODENAME
    elif [[ "$os_VENDOR" =~ (Fedora) ]]; then
        # For Fedora, just use 'f' and the release
        DISTRO="f$os_RELEASE"
    elif [[ "$os_VENDOR" =~ (openSUSE) ]]; then
        DISTRO="opensuse-$os_RELEASE"
    elif [[ "$os_VENDOR" =~ (SUSE LINUX) ]]; then
        # For SLE, also use the service pack
        if [[ -z "$os_UPDATE" ]]; then
            DISTRO="sle${os_RELEASE}"
        else
            DISTRO="sle${os_RELEASE}sp${os_UPDATE}"
        fi
    elif [[ "$os_VENDOR" =~ (Red Hat) || \
        "$os_VENDOR" =~ (CentOS) || \
        "$os_VENDOR" =~ (OracleLinux) ]]; then
        # Drop the . release as we assume it's compatible
        DISTRO="rhel${os_RELEASE::1}"
    elif [[ "$os_VENDOR" =~ (XenServer) ]]; then
        DISTRO="xs$os_RELEASE"
    else
        # Catch-all for now is Vendor + Release + Update
        DISTRO="$os_VENDOR-$os_RELEASE.$os_UPDATE"
    fi
    export DISTRO
}