#!/bin/bash

# this script cleans up the names of files and directories in the current directory.
# it ensures that names only contain letters, numbers, or the characters "-", "_", and ".".
# spaces and accented characters are replaced with allowed characters.

# usage:
# 1. save this script to a file, e.g., rename_files.sh
# 2. make the script executable: chmod +x rename_files.sh
# 3. run the script in the directory you want to clean up: ./rename_files.sh

# function to "clean" the names of files and directories
# the function converts uppercase to lowercase, replaces accented characters with their base equivalents,
# and replaces any character that is not a letter, digit, dot, underscore, or hyphen with an underscore.
clean_name() {
    echo "$1" | tr '[:upper:]' '[:lower:]' | sed -e 's/[àáâãäå]/a/g' \
                                      -e 's/[èéêë]/e/g' \
                                      -e 's/[ìíîï]/i/g' \
                                      -e 's/[òóôõö]/o/g' \
                                      -e 's/[ùúûü]/u/g' \
                                      -e 's/[ç]/c/g' \
                                      -e 's/[^a-zA-Z0-9._-]/_/g'
}

# loop through all files and directories in the current directory
for item in *; do
    # check if the item exists (avoid errors if nothing is found)
    if [ -e "$item" ]; then
        # get the new "cleaned" name
        new_name=$(clean_name "$item")
        # if the new name is different from the old one, rename the item
        if [ "$item" != "$new_name" ]; then
            mv "$item" "$new_name"
            echo "renamed: '$item' -> '$new_name'"
        fi
    fi
done

# display a message indicating that all files and directories have been processed
echo "all files and directories have been processed."