#!/bin/bash

#Goal: For each bibcode produce  a file  listing the authors
#
#usage: ./bc2authors input_file [starting_index]
#input_file .. list of BibCodes of author 
#starting_index .. for first BibCode. Default is 1
#e.g. ./bc2authors ref_bc.dat
#     ./bc2authors cite_bc.dat 100

ADS_Token=$(cat ADS_Token)
Auth="Authorization: Bearer:$ADS_Token"
Query="https://api.adsabs.harvard.edu/v1/search/query?q=bibcode:"
Output="&fl=author&rows=2000" 

if [[ -z $1 ]]; then
    echo "exit: need input BibCode file" 
    exit -1
fi
infile=$1 

start=$2; i=${start:=1}

while read BibCode
do
 outfile=${infile%.*}"_"$(printf "%03d" $i)".dat"
 echo "#" $BibCode > $outfile
 echo $BibCode 
 curl -s -H "$Auth" "$Query$BibCode$Output" | jq -r '.response.docs[0]|.author[]' >> $outfile
  i=$((i+1))
done < $infile