#!/bin/bash

# export BASH_DEBUG=true
module_load debug
module_load iecho
module_load file

# find, superceeds find use `command find` to get the super
function _find () {

# BASH_DEBUG=find

# USAGE
# all option arguments that contain globs/wildcards must be quoted to avoid expansion
# f sets path and file excludes from a supplied file path
# all lines ending in /  will be treated as directory names to ignore, otherwise files
# p option explictly excludes paths(directories)
# d option sets the directory depth which is current directy by default, 0 is all
# n inclucdes only file globs otherwise it's all except .files
# if no directory is given it will attempt to source the present working directory
# example:
# source_dir -p "archive" -e '"*.off" "*.md"'  -d 0 # $DIR/$SUBDIR
local EXCLUDE_FILE
local PATHS
local NAMES
local ENAMES
local DEPTH=1
local HIDDEN
local raw
local mounted
local usesudo

mounted="-mount"

declare OPTION
declare OPTARG
declare OPTIND

while getopts 'mrst:p:d:e:n:f:hl' OPTION; do
case "$OPTION" in
  s)
    usesudo=sudo
    ;;
  r)
    raw=true
    ;;
  t)
    TYPE=$OPTARG
    # echo "TYPE $TYPE"
    ;;
  f)
    EXCLUDE_FILE=$OPTARG
    # echo EXCLUDE FILE $EXCLUDE_FILE >&2
    ;;
  p)
    # PATHS=("$OPTARG")
    IFS=',' read -r -a PATHS <<< "$OPTARG"
    # echo EXCLUDING THESE PATHS ${PATHS[*]}
    ;;
  e)
    IFS=',' read -r -a ENAMES <<< "${OPTARG}"
    # echo EXCLUDING THESE FILE NAMES ${ENAMES[*]}
    ;;
  n)
    # NAMES=("$OPTARG")
    IFS=',' read -r -a NAMES <<< "${OPTARG}"
    # NAMES=$OPTARG
    ;;
  d)
    DEPTH=$OPTARG
    # echo "SOURCING TO DEPTH (0=any)" "$DEPTH"
    ;;
  h)
    HIDDEN=true
    # echo "SOURCING TO DEPTH (0=any)" "$DEPTH"
    ;;

  l)
    LINKS=-L
    ;;
  m)
   # include mounted directories
    mounted=""
    ;;   
  *)
    echo unknown option $OPTION
    ;;
esac
done

shift $(( OPTIND - 1 ))

if [[ $raw ]]; then
  echo executing raw find command
  $usesudo $(which find) "$@"
fi

local DIR
DIR="$*"
if [ ! "$DIR" ]; then
  if [ -v PS1 ]; then
  echo no directory provided to search
  echo searching present working directory $(pwd)
  read -p "Do you want to continue? " -n 1 -r
  [[ $REPLY =~ ^[Yy]$ ]] && DIR=$(pwd) || return 1
  else
    return 1
  fi
fi

[ ! -d "$DIR" ] && echo " directory $DIR does not exist, aborting" && return 1

# echo dir $DIR

local FIND
FIND="$usesudo $(which find) $LINKS $DIR"
FIND+=$([ ! $DEPTH == 0 ] && echo " -maxdepth $DEPTH ")
# FIND+=" -type $([ $TYPE ] && echo "$TYPE" || echo "f")"
TYPE=${TYPE:-f}
debug exclude mounts: $mounted
FIND+=" $mounted -type $TYPE "
# include HIDDEN files and directories IS FALSE BY DEFULT
[[ ! $HIDDEN ]] && FIND+="! -path \"*/.*/*\" ! -name \".*\" "

local name
local path

if [[ -f $EXCLUDE_FILE ]]; then
  local ignores=$(lines_2_str "$EXCLUDE_FILE")
  # echo ignores: $ignores >&2
  for exclude in $ignores ; do
    # echo exclude: ${exclude} >&2
    [[ "$exclude" == */ ]] && PATHS+=("${exclude::-1}") || ENAMES+=("$exclude")
  done
fi

# echo paths ${PATHS[@]} >&2
# echo exclude names ${ENAMES[@]} >&2

set -o noglob

if [[ ${PATHS[0]} ]]; then
  for path in ${PATHS[@]}; do
     # echo excluding $path
     FIND+=$(echo ' ! -path "*/'$path'/*"')
  done
fi

if [[ ${ENAMES[0]} ]]; then
  for name in ${ENAMES[@]}; do
     debug excluding name "$name"
     FIND+=$(echo ' ! -name '$name'')
  done
fi

debug "INCLUDING ONLY THESE FILE NAMES ${NAMES[*]}"
if [[ ${NAMES[0]} ]]; then
  for name in "${NAMES[@]}"; do
      debug only finding $name
     FIND+=$(echo " -name '${name}'")
  done
fi

# if [[ $NAMES ]]; then
#   debug names for find command $NAMES
#   for name in $NAMES; do
#       debug "xxonly finding '$name'"
#      FIND+=$(set -o noglob;echo " -name '${name}'")
#   done
# fi

# echo
# echo find dir: $DIR >&2
debug "find command: $FIND"
set +o noglob
local FILES
FILES=$(eval $FIND | sort)
[[ $FILES ]] && echo $FILES
return 0
}

# change-ext() {
# local depth
# local d
# d=${3:-0}
# let d+=1
# [ $d -lt 1 ] && depth="" || depth=" -maxdepth $d "
# find . $depth -name '*.'$1 -exec rename -n 's/\.'$1'/.'$2'/' \{} \;
# read -p "do REALLY want to change the extensions? " -n 1 -r
# echo
# [[ ! $REPLY =~ ^[Yy]$ ]] && return 1
# find . $depth -name '*.'$1 -exec rename 's/\.'$1'/.'$2'/' \{} \;
# }

# alias chext=change-ext