#!/bin/sh

# Sanity checks
if [ ! -f debian/control.in ]; then
    echo "Package not converted to dh-php >= 4" >&2
    exit 1;
fi

if dpkg --compare-versions "$(sed -ne 's/.*dh-php (>= \([.0-9~]*\)),/\1/p' debian/control.in)" lt 4~; then
    echo "Package not converted to dh-php >= 4" >&2
    exit 1
fi

PECL_NAME=$(sed -n 's/^X-PHP-PECL-Name: //p' debian/control.in)
if [ -z "$PECL_NAME" ]; then
    PECL_NAME=$(dpkg-parsechangelog -SSource | sed -e 's/^php-//')
fi

if [ "$1" = "-a" ]; then
    PHP__VERSIONS=$(sed -n 's/^X-PHP-Versions: //p' debian/control.in)
    if [ -z "$PHP__VERSIONS" ]; then
	PHP__VERSIONS=$(/usr/share/dh-php/php-versions)
    fi
else
    PHP__VERSIONS=$(sed -n 's/^X-PHP-Default-Version: //p' debian/control.in)
    if [ -z "$PHP__VERSIONS" ]; then
	PHP__VERSIONS=$(php-config --version | sed -e 's,\.[^.]*$,,')
    fi
fi

filter_php_versions() (
    /usr/sbin/phpquery -V | while read v; do
	if echo "${1}" | grep -q "${v}"; then
	    echo "${v}"
	fi
    done
)

PHP_VERSIONS=$(filter_php_versions "${PHP__VERSIONS}")

if [ -z "${PHP_VERSIONS}" ]; then
	echo "No supported PHP version found in '${PHP__VERSIONS}'" >&2
	exit 1
fi

prepare_all_dev() {
    awk "/^Source: /,/^$/" debian/control.in | tr ',' '\n' | sed -n -e 's/^[[:space:]]*php-\(.*\)-all-dev.*/\1/gp' |
	while read ALL_DEV_NAME; do
	    printf "s#php-${ALL_DEV_NAME}-all-dev#"
	    echo "$PHP_VERSIONS" | tr " " "\n" | while read -r ver; do
		printf "php${ver}-${ALL_DEV_NAME}, "
	    done
	    printf "${SED_REPLACEMENT}php-${ALL_DEV_NAME}-all-dev#;"
	done
}

SED_REPLACEMENT=$(prepare_all_dev)

{
    # Source: php-<ext>
    awk "/^Source: /,/^$/" debian/control.in | sed -e "${SED_REPLACEMENT}"
    echo

    GEN_DUMMY=$(sed -n 's/^X-PHP-Dummy-Package: //p' debian/control.in)
    if [ "$GEN_DUMMY" != "no" ]; then    
	# Package: php-<ext>
	awk "/^Package: php-${PECL_NAME}/,/^$/" debian/control.in
        echo " ."
        echo " This is empty package that depends on default PHP version."
	echo

	# Package: php-<ext>-all-dev
	awk "/^Package: php-${PECL_NAME}/,/^$/" debian/control.in | \
	    sed -e "s/^Architecture: any/Architecture: all/" \
		-e "s/^Package: php-${PECL_NAME}\(.*\)/Package: php-${PECL_NAME}-all-dev/"
	echo " ."
	echo " This is empty package that depends on all PHP versions."
	echo
    fi

    # Package: php<ver>-<ext>
    echo "$PHP_VERSIONS" | tr " " "\n" | while read -r ver; do
	awk "/^Package: php-${PECL_NAME}/,/^$/" debian/control.in |
	    sed -e "s/^Architecture: all/Architecture: any/" \
		-e "s/^Package: php-${PECL_NAME}\(.*\)/Package: php${ver}-${PECL_NAME}/"
	echo
    done
} | cat -s > debian/control