#!/bin/bash

usage () {
 cat << EOF
usage: $0 PSIBUILD 
EOF
}

BUILD_FILE=${@: -1}

[[ $# = 0 ]] && usage && epsit 1
[ -f "$FILE" ] && echo "$BUILD_FILE not found" && epsit 1

source $BUILD_FILE

PKG_NAME=$(basename $BUILD_FILE .psibuild)

PSI_ROOT=$(pwd)
PKGS_OUTPUT=$PSI_ROOT/psipkgs

PKG_BUILD_DIR=$PSI_ROOT/tmp/$PKG_NAME
PKG_DEST=$PKG_BUILD_DIR/package

# make the directories
mkdir -p $PKG_DEST
cd $PKG_BUILD_DIR

# fetch, build then package the package
fetch
build
package


# go back to root, make things easier
cd $PSI_ROOT

# bundle the package to a targz in the output dir
mkdir -p $PKGS_OUTPUT

PKG_FILE=$PKGS_OUTPUT/$PKG_NAME.psipkg

tar -C $PKG_BUILD_DIR/package -czf $PKG_FILE ./

# create info file
PKG_INFO=$PKGS_OUTPUT/$PKG_NAME.psipkg.info

echo "" > $PKG_INFO
echo "NAME=$PKG_NAME" >> $PKG_INFO
echo "PKG_FILE=$PKG_NAME.psipkg" >> $PKG_INFO
echo "CHECKSUM=$(md5sum $PKG_FILE | awk '{ print $1 }')" >> $PKG_INFO
echo "DATE=$(date)" >> $PKG_INFO
echo "DEPS=(${DEPS[*]})" >> $PKG_INFO

# sign the package
PRIV_KEY=$PSI_ROOT/keychain/psi.pem
PUB_KEY=$PSI_ROOT/keychain/psi.pub

if [ -f "$PRIV_KEY" ]; then
    echo "SIGNATURE=" >> $PKG_INFO
    openssl dgst -sign $PRIV_KEY $PKG_FILE >> $PKG_INFO
else
    echo "SIGNATURE=">> $PKG_INFO
    echo "unsigned">> $PKG_INFO
    >&2 echo "WARNING! no private key: unsigned packages!"
fi
# clean up
rm -rf $PKG_BUILD_DIR
rmdir $PSI_ROOT/tmp