#!/bin/bash
set -e

# All parameters are required. This way, users can't pass empty string as parameter.
invalidArgs=0
[ -z "$1" ] && invalidArgs=1
[ -z "$2" ] && invalidArgs=1
[ -z "$3" ] && invalidArgs=1

if [ $invalidArgs -eq 1 ]; then
    echo Usage: ut_run.sh "project_path" "sql_param_name" "output_file" "scan_path"
    exit 1
fi

# Remove trailing slashes.
projectPath=${1%/}
sqlParamName=$2
outputFile=$3
scanPath=$4

fullScanPath="$projectPath/$scanPath"

if [ ! -d "$fullScanPath" ] || [ -z "$4" ]; then
    echo "begin" > $outputFile
    echo "  open :$sqlParamName for select null from dual where 1= 0;" >> $outputFile
    echo "end;" >> $outputFile
    echo "/" >> $outputFile
    exit 0
fi

echo "declare" > $outputFile
echo "    l_list ut_varchar2_list := ut_varchar2_list();" >> $outputFile
echo "begin" >> $outputFile
for f in $(find $fullScanPath/* -type f | sed "s|$projectPath/||"); do
    echo "    l_list.extend; l_list(l_list.last) := '$f';" >> $outputFile
done
echo "    open :$sqlParamName for select * from table(l_list);" >> $outputFile
echo "end;" >> $outputFile
echo "/" >> $outputFile