#!/bin/bash

show_help() {
  echo "Usage: bash-helper [keyword]"
  echo "
  Searches for a keyword in a list of common bash commands and their explanations."
  echo "
  Options:"
  echo "    -h, --help    Show this help message."
}

show_flags() {
  CMD_NAME=$1
  FILTER=$2

  # Colors
  RED='\033[0;31m'
  GREEN='\033[0;32m'
  YELLOW='\033[0;33m'
  NC='\033[0m' # No Color

  echo -e "    ${YELLOW}Flags for $CMD_NAME:${NC}"

  if type "$CMD_NAME" | grep -q "shell builtin"; then
    if [ -n "$FILTER" ]; then
      help "$CMD_NAME" | grep -E ' -' | grep -i "$FILTER"
    else
      help "$CMD_NAME" | grep -E ' -'
    fi
  elif command -v $CMD_NAME &> /dev/null; then
    if [ -n "$FILTER" ]; then
      man "$CMD_NAME" | col -b | grep -E ' -' | grep -i "$FILTER"
    else
      man "$CMD_NAME" | col -b | grep -E ' -'
    fi
  else
    echo -e "    ${RED}Could not find help for $CMD_NAME${NC}"
  fi
}

COMMANDS=(
  "ls:List directory contents"
  "cd:Change the current directory"
  "pwd:Print the name of the current working directory"
  "cp:Copy files and directories"
  "mv:Move or rename files and directories"
  "rm:Remove files or directories"
  "mkdir:Create a new directory"
  "rmdir:Remove an empty directory"
  "grep:Print lines matching a pattern"
  "find:Search for files in a directory hierarchy"
  "echo:Display a line of text"
)

FZF_COMMAND=$(printf "%s\n" "${COMMANDS[@]}" | fzf --height 40% --border --preview 'echo {}' --preview-window=up:1:wrap)

if [ -n "$FZF_COMMAND" ]; then
  CMD=${FZF_COMMAND%%:*}
  EXP=${FZF_COMMAND#*:}
  echo "Command: $CMD"
  echo "Description: $EXP"
  read -p "Filter flags (optional): " FILTER
  show_flags "$CMD" "$FILTER"
fi