#!/bin/bash

# This script defines grib table 126 for EC-Earth usage.
# The new grib definitions are put in the source dir of EC-Earth 3.

set -e

# --- Path to "grib_api/definitions"

GRIBAPI_BASE_DIR=[[[PLT:ACTIVE:GRIBAPI_BASE_DIR]]]

errmess="*ERROR*: Could not find the path to grib_info or codes_info
commands. Please set GRIBAPI_BASE_DIR manually, or load the
GRIB_API or ECCODES module if you rely on module to set your
env, and run this script again."

if [ -z "${GRIBAPI_BASE_DIR}" ]
then
    echo Your GRIBAPI_BASE_DIR is empty
    echo Trying to retrieve '<your-grib_api-root-dir>/share/[grib_api|eccodes]/definitions'
    echo   from environment instead... 
    echo Note that if both grib_info and codes_info are found in your path,
    echo   GRIB_API takes precedence over ECCODES

    info=($(which grib_info codes_info 2>/dev/null || true))
    if [ -x "${info[0]}" ]
    then
        grib_def_dir=$(${info[0]} | sed -n "s|Default definition files path is used: ||p")
    else
        echo "$errmess"
        exit 1
    fi
    if [ -z "${grib_def_dir}" ]
    then
        echo "$errmess"
        exit 1
    else
        echo Found it.
    fi
elif [ -e ${GRIBAPI_BASE_DIR}/share/grib_api/definitions ]
then
    grib_def_dir=${GRIBAPI_BASE_DIR}/share/grib_api/definitions

elif [ -e ${GRIBAPI_BASE_DIR}/share/eccodes/definitions ]
then
    grib_def_dir=${GRIBAPI_BASE_DIR}/share/eccodes/definitions
else
    echo "ERROR: Path ${GRIBAPI_BASE_DIR}/share/[grib_api|eccodes]/definitions does not exist"
    exit 1
fi

# --- Create target and populate

target_dir=[[[PLT:ACTIVE:ECEARTH_SRC_DIR]]]/util/grib_table_126/grib1/localConcepts/ecmf
mkdir -p ${target_dir}
cp ${grib_def_dir}/grib1/localConcepts/ecmf/* ${target_dir}

# --- additions to grib definitions for EC-Earth table 126

cd $target_dir

for ((i=1;i<=255;i++))
do
#cfVarname
    cat >> cfVarName.def <<EOF

# EC-Earth product $i
'ece${i}.126' = {
               table2Version = 126 ;
               indicatorOfParameter = $i ;
             }
EOF

# paramId
    str=126${i}
    lim=100
    if [ $i -lt $lim ]; then
	str=1260${i}
    fi
    lim=10
    if [ $i -lt $lim ]; then
	str=12600${i}
    fi

    cat >> paramId.def <<EOF

# EC-Earth product $i
'${str}' = {
            table2Version = 126 ;
            indicatorOfParameter = $i ;
          }
EOF

#name
    cat >> name.def <<EOF

# EC-Earth product $i
'EC-Earth product $i' = {
                         table2Version = 126 ;
                         indicatorOfParameter = $i ;
                       }
EOF

#shortName
    cat >> shortName.def <<EOF

# EC-Earth product $i
'~' = {
       table2Version = 126 ;
       indicatorOfParameter = $i ;
     }
EOF

#units
    cat >> units.def <<EOF

# EC-Earth product $i
'~' = {
       table2Version = 126 ;
       indicatorOfParameter = $i ;
     }
EOF

done