#!/usr/bin/env sh
#
# See https://getcomposer.org/download/
#     https://composer.github.io/pubkeys.html
#     https://getcomposer.org/doc/faqs/how-to-install-composer-programmatically.md
#

## Download
##php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
#rm -f composer-setup.php
#wget https://getcomposer.org/installer -O composer-setup.php || exit 1
#
#php -r "if (hash_file('sha384', 'composer-setup.php') === 'e0012edf3e80b6978849f5eff0d4b4e4c79ff1609dd1e613307e16318854d24ae64f26d17af3ef0bf7cfb710ca74755a') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
#
#if [ -e "composer-setup.php" ]; then
#  php composer-setup.php --install-dir=/usr/local/bin --filename=composer
#  #php -r "unlink('composer-setup.php');"
#  rm composer-setup.php
#fi

EXPECTED_CHECKSUM="$(wget -q -O - https://composer.github.io/installer.sig)"
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
ACTUAL_CHECKSUM="$(php -r "echo hash_file('sha384', 'composer-setup.php');")"

if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]
then
    >&2 echo 'ERROR: Invalid installer checksum'
    rm composer-setup.php
    exit 1
fi

php composer-setup.php --quiet
RESULT=$?
rm composer-setup.php
mv composer.phar /usr/local/bin/composer
exit $RESULT