check_permissions

#!/bin/bash

usage() {
    echo "Usage: $0 [ -b ] " 1>&2
    echo "    Options:"
    echo "      -b        write all the details of the files with incorrect permissions to"
    echo "                'incorrect_permissions' and a blame list with all the users"
    echo "                owning those file"
}

SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )

blame_list=false

while getopts "h?b" opt; do
    case "$opt" in
        h|\?)
            usage
            exit 0
            ;;
        b) blame_list=true
           ;;
    esac
done


# We check for incorrect permissions, writting the results to the "incorrect_permissions" file
if [ "$blame_list" = true ] ; then
    rm -f incorrect_permissions
fi

check_dir() {
    find $1 \( -not -group $2 -or -not -perm -g+rX \) -and \( -type d -or -name "*.nc" -or -name "*.yaml" \) -exec ls -ld '{}' \; 2>/dev/null
}

for group in ik11 hh5 cj50 jk72; do
    for dir in $("$SCRIPT_DIR"/experiment_dirs $group); do
        echo "Checking: $dir"
        if [ "$blame_list" = true ] ; then
            check_dir $dir $group | tee -a incorrect_permissions
        else
            check_dir $dir $group
        fi
    done
done

# Check which users own the files/directories that have incorrect permissions and build a blame list
if [ "$blame_list" = true ] ; then
    users=()
    for user in $(cat incorrect_permissions | awk '{print $3}'); do
        if [[ ! " ${users[*]} " =~ " ${user} " ]]; then
        users+=($user)
        fi
    done
    printf -v emails '%s@nci.org.au, ' "${users[@]}"
    echo "${emails%, }" > blame_list
fi