#!/bin/bash
# set -x

source "$SRC_BASE/build-tools/spec-utils"
source "$SRC_BASE/build-tools/srpm-utils"

CUR_DIR=`pwd`
BUILD_DIR="$RPMBUILD_BASE"

if [ "x$DATA" == "x" ]; then
   echo "ERROR: default_build_srpm (${LINENO}): Environment variable 'DATA' not defined."
   exit 1
fi

srpm_source_build_data $DATA
if [ $? -ne 0 ]; then
    echo "ERROR: default_build_srpm (${LINENO}): Failed to source build data from $DATA"
    exit 1
fi

if [ "x$PBR_VERSION" != "x" ] && [ "x$PBR_VERSION" != "xNA" ]; then
    VERSION=$PBR_VERSION
fi

if [ "x$VERSION" == "x" ]; then
    for SPEC in `find $SPECS_BASE -name '*.spec' | sort -V`; do
       SPEC_PATH="$SPEC"

       VERSION_DERIVED=`spec_evaluate '%{version}' "$SPEC_PATH" 2>> /dev/null`
       if [ $? -ne 0 ]; then
           echo "ERROR: default_build_srpm (${LINENO}): '%{version}' not found in '$PKG_BASE/$SPEC_PATH'"
           VERSION_DERIVED=""
       fi

       if [ "x$VERSION_DERIVED" != "x" ]; then
          if [ "x$VERSION" == "x" ]; then
             VERSION=$VERSION_DERIVED
          else
             if [ "x$SRC_DIR" != "x" ]; then
                echo "ERROR: default_build_srpm (${LINENO}): multiple spec files found, can't set VERSION automatically"
                exit 1
             fi
          fi
       fi
    done

    if [ "x$VERSION" == "x" ]; then
       if [ -f $SRC_DIR/PKG-INFO ]; then
          VERSION=$(grep '^Version:' $SRC_DIR/PKG-INFO | awk -F ': ' '{print $2}' | sed -e 's/^[[:space:]]*//')
       fi
    fi

    if [ "x$VERSION" != "x" ]; then
        echo "Derived VERSION=$VERSION"
    else
        echo "ERROR: default_build_srpm (${LINENO}): Failed to derive a good VERSION from SPEC file, and none provided."
        exit 1
    fi
fi

if [ "x$TAR_NAME" == "x" ]; then
    for SPEC in `find $SPECS_BASE -name '*.spec' | sort -V`; do
       SPEC_PATH="$SPEC"

       SERVICE=`spec_find_global service "$SPEC_PATH" 2>> /dev/null`
       if [ $? -eq 0 ]; then
          if [ "x$TAR_NAME" == "x" ]; then
             TAR_NAME=$SERVICE
          else
             if [ "x$SRC_DIR" != "x" ]; then
                echo "ERROR: default_build_srpm (${LINENO}): multiple spec files found, can't set TAR_NAME automatically"
                exit 1
             fi
          fi
       else
          NAME=`spec_find_tag Name "$SPEC_PATH" 2>> /dev/null`
          if [ $? -eq 0 ]; then
             if [ "x$TAR_NAME" == "x" ]; then
                TAR_NAME=$NAME
             else
                if [ "x$SRC_DIR" != "x" ]; then
                   echo "ERROR: default_build_srpm (${LINENO}): multiple spec files found, can't set TAR_NAME automatically"
                   exit 1
                fi
             fi
          else
             echo "WARNING: default_build_srpm (${LINENO}): 'Name' not found in '$SPEC_PATH'"
             NAME=""
          fi
       fi
    done

    if [ "x$TAR_NAME" == "x" ]; then
        if [ -f $SRC_DIR/PKG-INFO ]; then
            TAR_NAME=$(grep '^Name:' $SRC_DIR/PKG-INFO | awk -F ': ' '{print $2}' | sed -e 's/^[[:space:]]*//')
        fi
    fi

    if [ "x$TAR_NAME" != "x" ]; then
        echo "Derived TAR_NAME=$TAR_NAME"
    else
        echo "ERROR: default_build_srpm (${LINENO}): Failed to derive a good TAR_NAME from SPEC file, and none provided."
        exit 1
    fi
fi

if [ "x$TAR" == "x" ]; then
    TAR="$TAR_NAME-$VERSION.tar.gz"
fi

SOURCE_PATH="$BUILD_DIR/SOURCES"
TAR_PATH="$SOURCE_PATH/$TAR"
STAGING=""

if [ "x$COPY_LIST_TO_TAR" != "x" ] || [ "x$EXCLUDE_LIST_FROM_TAR" != "x" ]; then
	STAGING="$BUILD_DIR/staging"
	mkdir -p $STAGING
fi

mkdir -p "$BUILD_DIR/SRPMS"
mkdir -p "$SOURCE_PATH"

if [ "x$SRC_DIR" == "x" -a "x$COPY_LIST" == "x" -a "$ALLOW_EMPTY_RPM" != "true" ]; then
   echo "ERROR: default_build_srpm (${LINENO}): '$PWD/$DATA' failed to provide at least one of 'SRC_DIR' or 'COPY_LIST'"
   exit 1
fi

if [ "x$SRC_DIR" != "x" ]; then
   if [ ! -d "$SRC_DIR" ]; then
      echo "ERROR: default_build_srpm (${LINENO}): directory not found: '$SRC_DIR'"
      exit 1
   fi
fi

if [ "x$COPY_LIST" != "x" ]; then
   echo "COPY_LIST: $COPY_LIST"
   for p in $COPY_LIST; do
      # echo "COPY_LIST: $p"
      \cp -L -u -r -v $p $SOURCE_PATH
      if [ $? -ne 0 ]; then
         echo "ERROR: default_build_srpm (${LINENO}): COPY_LIST: file not found: '$p'"
         exit 1
      fi
   done
fi

if [ "x$STAGING" != "x" ]; then
   \cp -L -u -r -v $SRC_DIR $STAGING
   echo "COPY_LIST_TO_TAR: $COPY_LIST_TO_TAR"
   for p in $COPY_LIST_TO_TAR; do
      # echo "COPY_LIST_TO_TAR: $p"
      \cp -L -u -r -v $p $STAGING/$SRC_DIR
      if [ $? -ne 0 ]; then
         echo "ERROR: default_build_srpm (${LINENO}): COPY_LIST_TO_TAR: file not found: '$p'"
         exit 1
      fi
   done   
   echo "EXCLUDE_LIST_FROM_TAR: $EXCLUDE_LIST_FROM_TAR"
   for p in $EXCLUDE_LIST_FROM_TAR; do
      # echo "EXCLUDE_LIST_FROM_TAR: $p"
      echo "rm -rf $STAGING/$SRC_DIR/$p"
      \rm -rf $STAGING/$SRC_DIR/$p
      if [ $? -ne 0 ]; then
         echo "ERROR: default_build_srpm (${LINENO}): EXCLUDE_LIST_FROM_TAR: could not remove file: '$p'"
         exit 1
      fi
   done   
   
fi

TRANSFORM=`echo "$SRC_DIR" | sed 's/^\./\\./' | sed 's:^/::' | sed 's#^.*/\.\./##'`

if [ "x$STAGING" != "x" ]; then
	pushd $STAGING
fi

TAR_NEEDED=0
if [ "x$SRC_DIR" != "x" ]; then
    echo "SRC_DIR=$SRC_DIR"
    if [ -f $TAR_PATH ]; then
        n=`find . -cnewer $TAR_PATH -and ! -path './.git*' \
                                    -and ! -path './build/*' \
                                    -and ! -path './.pc/*' \
                                    -and ! -path './patches/*' \
                                    -and ! -path "./$DISTRO/*" \
                                    -and ! -path './pbr-*.egg/*' \
                                    | wc -l`
        if [ $n -gt 0 ]; then
            TAR_NEEDED=1
        fi
    else
        TAR_NEEDED=1
    fi
fi

if [ $TAR_NEEDED -gt 0 ]; then
    echo "Creating tar file: $TAR_PATH ..."
    echo "tar czf  $TAR_PATH $SRC_DIR --exclude '.git*' --exclude 'build' --exclude='.pc' --exclude='patches' --exclude='$SRC_DIR/$DISTRO' --exclude='pbr-*.egg' --transform 's,^$TRANSFORM,$TAR_NAME-$VERSION,'"
    tar czf  $TAR_PATH $SRC_DIR --exclude '.git*' --exclude 'build' --exclude='.pc' --exclude='patches' --exclude="$SRC_DIR/$DISTRO" --exclude='pbr-*.egg' --transform "s,^$TRANSFORM,$TAR_NAME-$VERSION,"
    if [ $? -ne 0 ]; then
		if [ "x$STAGING" != "x" ]; then
			popd
		fi
    
        echo "ERROR: default_build_srpm (${LINENO}): failed to create tar file, cmd: tar czf  $TAR_PATH $SRC_DIR --exclude '.git*' --exclude 'build' --exclude='.pc' --exclude='patches' --exclude="$SRC_DIR/$DISTRO" --exclude='pbr-*.egg' --transform \"s,^$TRANSFORM,$TAR_NAME-$VERSION,\""
        exit 1
    fi
    echo "Created tar file: $TAR_PATH"
else
    echo "Tar file not needed."
fi

if [ "x$STAGING" != "x" ]; then
	popd
fi

if [ ! -d $BUILD_DIR/SPECS ]; then
    echo "Spec directory '$BUILD_DIR/SPECS' does not exist"
    exit 1
fi

if [ $(ls -1 $BUILD_DIR/SPECS/*.spec | wc -l) -eq 0 ]; then
    echo "No spec files found in spec directory '$BUILD_DIR/SPECS'"
    exit 1
fi

for SPEC in `ls -1 $BUILD_DIR/SPECS`; do
    SPEC_PATH="$BUILD_DIR/SPECS/$SPEC"
    RELEASE=`spec_find_tag Release "$SPEC_PATH" 2>> /dev/null`
    if [ $? -ne 0 ]; then
        echo "ERROR: default_build_srpm (${LINENO}): 'Release' not found in '$SPEC_PATH'"
    fi
    NAME=`spec_find_tag Name "$SPEC_PATH" 2>> /dev/null`
    if [ $? -ne 0 ]; then
        echo "ERROR: default_build_srpm (${LINENO}): 'Name' not found in '$SPEC_PATH'"
    fi
    SRPM="$NAME-$VERSION-$RELEASE.src.rpm"
    SRPM_PATH="$BUILD_DIR/SRPMS/$SRPM"

    spec_validate_tis_release $SPEC_PATH
    if [ $? -ne 0 ]; then
        echo "TIS Validation of $SPEC_PATH failed"
        exit 1
    fi

    BUILD_NEEDED=0
    if [ -f $SRPM_PATH ]; then
        n=`find . -cnewer $SRPM_PATH | wc -l`
        if [ $n -gt 0 ]; then
            BUILD_NEEDED=1
        fi
    else
        BUILD_NEEDED=1
    fi

    if [ $BUILD_NEEDED -gt 0 ]; then
        echo "SPEC file: $SPEC_PATH"
        echo "SRPM build directory: $BUILD_DIR"
        echo "TIS_PATCH_VER: $TIS_PATCH_VER"
        echo "PBR_VERSION: $PBR_VERSION"

        sed -i -e "1 i%define _tis_build_type $BUILD_TYPE" $SPEC_PATH
        sed -i -e "1 i%define tis_patch_ver $TIS_PATCH_VER" $SPEC_PATH
        sed -i -e "1 i%define pbr_version $PBR_VERSION" $SPEC_PATH
        rpmbuild -bs $SPEC_PATH --define="%_topdir $BUILD_DIR"  --undefine=dist --define="_tis_dist .tis"
    else
        echo "SRPM build not needed"
    fi
done