#!/bin/bash

find_config_file() {
    local program="$1"
    local config_file=""

    if [ -z "$XDG_CONFIG_HOME" ]; then
        XDG_CONFIG_HOME="$HOME/.config"
    fi

    local config_files=($(find -L "$XDG_CONFIG_HOME" \( -name "$program*" -o -name ".$program*" \) -type f))
    if [ ${#config_files[@]} -gt 0 ]; then
	local min_subfolder_count=10
	for file in "${config_files[@]}"; do
            subfolder_count=$(echo "$file" | awk -F/ '{print NF-2}')
	    if [ -z "$config_file" ] || { [ "$subfolder_count" -lt "$min_subfolder_count" ] || { [ "$subfolder_count" -eq "$min_subfolder_count" ] && [ "$(basename "$file")" == "$program.${file##*.}" ]; }; }; then
                min_subfolder_count="$subfolder_count"
                config_file="$file"
            fi
        done
    fi

    if [ -z "$config_file" ]; then
        local home_config_files=($(find -L "$HOME" -name ".$program*" -type f -maxdepth 1))
        if [ ${#home_config_files[@]} -gt 0 ]; then
            config_file="${home_config_files[0]}"
        fi
    fi

    echo "$config_file"
}

if [ -z "$1" ]; then
    echo "Usage: $0 <program>"
    exit 1
fi

program="$1"

config_file=$(find_config_file "$program")

if [ -z "$config_file" ]; then
    echo "Config file for $program not found."
    exit 1
fi

$EDITOR "$config_file"