main() {
    # Check if the first argument is provided
    local search_term="${1:-}"
    if [ -z "${search_term}" ]; then
        echo "Usage: search_file <search_term> [<file>]"
        return
    fi
    # Check if the second argument is provided
    if [ $# -ge 2 ]; then
        # Check if the provided argument is a valid file
        if [ -f "$2" ]; then
            local file="$2"  # Set file if valid
        else
            echo "Usage: search_file <search_term> [<file>]"
            echo "Error: File name $2 not found. Please provide a valid file name."
            return  # Exit if the file is not valid
        fi
    else
        local CURRENT_FILE=$(_read_env CURRENT_FILE)
        # Check if a file is open
        if [ -z "${CURRENT_FILE:-}" ]; then
            echo "No file open. Use the open command first."
            return  # Exit if no file is open
        fi
        local file="$CURRENT_FILE"  # Set file to the current open file
    fi
    local search_term="$1"
    file=$(realpath "$file")
    # Use grep to directly get the desired formatted output
    local matches=$(grep -nH -- "$search_term" "$file")
    # Check if no matches were found
    if [ -z "${matches:-}" ]; then
        echo "No matches found for \"$search_term\" in $file"
        return
    fi
    # Calculate total number of matches
    local num_matches=$(echo "$matches" | wc -l | awk '{$1=$1; print $0}')

    # calculate total number of lines matched
    local num_lines=$(echo "$matches" | cut -d: -f1 | sort | uniq | wc -l | awk '{$1=$1; print $0}')
    # if num_lines is > 100, print an error
    if [ $num_lines -gt 100 ]; then
        echo "More than $num_lines lines matched for \"$search_term\" in $file. Please narrow your search."
        return
    fi

    # Print the total number of matches and the matches themselves
    echo "Found $num_matches matches for \"$search_term\" in $file:"
    echo "$matches" | cut -d: -f1-2 | sort -u -t: -k2,2n | while IFS=: read -r filename line_number; do
        echo "Line $line_number:$(sed -n "${line_number}p" "$file")"
    done
    echo "End of matches for \"$search_term\" in $file"
}

main "$@"