#!/bin/sh
set -e

case "$(uname -s)" in
Linux)
    case "$(lsb_release --id --short)" in
    Ubuntu|Debian)
        # Note that we install the system version of python-libvirt here
        # instead of relying on PyPI for that particular module. THe reason for
        # this is that Ubuntu Precise ships libvirt 0.9.8, and PyPI's
        # python-libvirt packages require libvirt >= 1.0.2.
        # Some options for resolving this situation would be choosing some or
        # all of the following:
        #   A) Removing support for Precise,
        #   B) Removing support for downburst,
        #   C) Adding "Precise" conditionals somewhere, eg. conditionalizing
        #   this bootstrap script to only use the python-libvirt package on
        #   Ubuntu Precise.
        for package in python-dev python-pip python-virtualenv libevent-dev python-libvirt libmysqlclient-dev; do
            if [ "$(dpkg --status -- $package|sed -n 's/^Status: //p')" != "install ok installed" ]; then
                # add a space after old values
                missing="${missing:+$missing }$package"
            fi
        done
        if [ -n "$missing" ]; then
            echo "$0: missing required packages, please install them:" 1>&2
            echo "sudo apt-get install $missing"
            exit 1
        fi
        ;;
    Fedora)
        for package in python-pip python-virtualenv libevent-devel libvirt-python community-mysql-devel; do
	    if [ "$(rpm -q $package)" == "package $package is not installed" ]; then
		missing="${missing:+$missing }$package"
	    fi
	done
	if [ -n "$missing" ]; then
            echo "$0: missing required packages, please install them:" 1>&2
            echo "sudo yum install $missing"
            exit 1
	fi
	;;
    "openSUSE project"|"SUSE LINUX")
        for package in python-pip python-virtualenv libevent-devel libvirt-python libmysqlclient-devel; do
            if [ "$(rpm -q $package)" == "package $package is not installed" ]; then
                missing="${missing:+$missing }$package"
            fi
        done
        if [ -n "$missing" ]; then
            echo "$0: missing required packages, please install them:" 1>&2
            echo "sudo zypper install $missing"
            exit 1
        fi
        ;;
    *)
        echo "This script does not support your Linux distribution yet. Patches encouraged!"
        exit 1
        ;;
    esac
    ;;
Darwin)
    if ! which brew > /dev/null; then
        echo "You need Homebrew: http://brew.sh/"
        exit 1
    fi
    for keg in python libvirt libevent mysql; do
        if brew list $keg >/dev/null 2>&1; then
            echo "Found $keg"
        else
            brew install $keg
        fi
    done
    ;;
*)
    echo "This script does not support your OS yet. Patches encouraged!"
    exit 1
    ;;
esac

if [ -z "$NO_CLOBBER" ] || [ ! -e ./virtualenv ]; then
    if ! which virtualenv > /dev/null; then
        pip install virtualenv
    fi
    # site packages needed because libvirt python bindings are not nicely
    # packaged
    virtualenv --system-site-packages --setuptools virtualenv

    # avoid pip bugs
    ./virtualenv/bin/pip install --upgrade pip

    # work-around change in pip 1.5
    ./virtualenv/bin/pip install setuptools --no-use-wheel --upgrade
fi

./virtualenv/bin/pip install -r requirements.txt

./virtualenv/bin/python setup.py develop