#!/bin/bash

#
# usage: create-yum-conf [<layer>]
#

LAYER=${1:-$LAYER}

if [ "$MY_WORKSPACE" == "" ]; then
   echo "ERROR: MY_WORKSPACE not defined"
   exit 1;
fi

if [ "$MY_REPO" == "" ]; then
   echo "ERROR: MY_REPO not defined"
   exit 1;
fi

if [ "$MY_BUILD_ENVIRONMENT" == "" ]; then
   echo "ERROR: MY_BUILD_ENVIRONMENT not defined"
   exit 1;
fi

if [ "$MY_BUILD_DIR" == "" ]; then
   echo "ERROR: MY_BUILD_DIR not defined"
   exit 1;
fi

MY_YUM_CONF="$MY_WORKSPACE/yum.conf"
YUM_DIR="$MY_WORKSPACE/yum"
YUM_CACHE="$YUM_DIR/cache"

# For backward compatibility.  Old repo location or new?
CENTOS_REPO=${MY_REPO}/centos-repo
if [ ! -d ${CENTOS_REPO} ]; then
    CENTOS_REPO=${MY_REPO}/cgcs-centos-repo
    if [ ! -d ${CENTOS_REPO} ]; then
        echo "ERROR: directory ${MY_REPO}/centos-repo not found."
        exit 1
    fi
fi

# Try to find a layer specific mock.cfg.proto
MOCK_CFG_PROTO="${CENTOS_REPO}/mock.cfg.${LAYER}.proto"
if [ ! -f "$MOCK_CFG_PROTO" ]; then
    # Not present, Use default mock.cfg.proto
    MOCK_CFG_PROTO="${CENTOS_REPO}/mock.cfg.proto"
fi


if [ -f "$MOCK_CFG_PROTO" ]; then
    if [ -f "$MY_YUM_CONF" ]; then
        N=$(find $MOCK_CFG_PROTO $MY_REPO/build-tools/create-yum-conf -cnewer $MY_YUM_CONF | wc -l) 
        if [ $N -gt 0 ]; then
            # New inputs, remove to force regeneration of yum.conf
            \rm -f "$MY_YUM_CONF"
        fi
    fi
fi
   
if [ ! -f "$MY_YUM_CONF" ]; then
    if [ -f "$MOCK_CFG_PROTO" ]; then
        mock_cfg_to_yum_conf.py "$MOCK_CFG_PROTO"      > "$MY_YUM_CONF"
        sed -i "s%\[main\]%&\ncachedir=$YUM_CACHE%"      "$MY_YUM_CONF"
        sed -i "s%logfile=.*%logfile=$YUM_DIR/yum.log%"  "$MY_YUM_CONF"
        # eg: LOCAL_BASE/MY_BUILD_DIR => file:///MY_BUILD_DIR
        sed -i "s%LOCAL_BASE%file://%g"                  "$MY_YUM_CONF"
        sed -i "s%MIRROR_BASE%file:///import/mirrors%g"  "$MY_YUM_CONF"
        sed -i "s%BUILD_ENV%$MY_BUILD_ENVIRONMENT%g"     "$MY_YUM_CONF"
        # eg: file:///MY_BUILD_DIR => file:///localdisk/loadbuild/...
        sed -i "s%/MY_BUILD_DIR%$MY_BUILD_DIR%g"         "$MY_YUM_CONF"
        sed -i "s%/MY_REPO_DIR%$MY_REPO%g"               "$MY_YUM_CONF"
        # eg = MY_BUILD_DIR/xyz => /localdisk/loadbuild/.../xyz
        sed -i "s%MY_BUILD_DIR%$MY_BUILD_DIR%g"          "$MY_YUM_CONF"
        sed -i "s%MY_REPO_DIR%$MY_REPO%g"                "$MY_YUM_CONF"
    else
        echo "ERROR: Could not find yum.conf or MOCK_CFG_PROTO"
        exit 1
    fi
fi

if [ ! -d "$YUM_CACHE" ]; then
    mkdir -p "$YUM_CACHE"
fi

echo "$MY_YUM_CONF"
exit 0