#!/bin/sh
set -e

if [ -f /etc/debian_version ]; then
    for package in python-pip python-virtualenv python-dev libevent-dev; do
        if [ "$(dpkg --status -- $package 2>/dev/null|sed -n 's/^Status: //p')" != "install ok installed" ]; then
            # add a space after old values
            missing="${missing:+$missing }$package"
        fi
    done
    if [ -n "$missing" ]; then
        echo "$0: missing required packages, please install them:" 1>&2
        echo "  sudo apt-get install $missing"
        exit 1
    fi
fi
if [ -f /etc/redhat-release ]; then
    for package in python-pip python-virtualenv python-devel libevent-devel; do
        if [ "$(rpm -qa $package 2>/dev/null)" == "" ]; then
            missing="${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
fi

virtualenv --no-site-packages --distribute 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

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

# forbid setuptools from using the network because it'll try to use
# easy_install, and we really wanted pip; next line will fail if pip
# requirements.txt does not match setup.py requirements -- sucky but
# good enough for now
./virtualenv/bin/python setup.py develop \
    --allow-hosts None