#!/usr/bin/env bash
# author: deadc0de6 (https://github.com/deadc0de6)
# Copyright (c) 2022, deadc0de6
#
# test chmod preserve on install
#

# exit on first error
set -e

# all this crap to get current path
rl="readlink -f"
if ! ${rl} "${0}" >/dev/null 2>&1; then
  rl="realpath"

  if ! hash ${rl}; then
    echo "\"${rl}\" not found !" && exit 1
  fi
fi
cur=$(dirname "$(${rl} "${0}")")

#hash dotdrop >/dev/null 2>&1
#[ "$?" != "0" ] && echo "install dotdrop to run tests" && exit 1

#echo "called with ${1}"

# dotdrop path can be pass as argument
ddpath="${cur}/../"
[ "${1}" != "" ] && ddpath="${1}"
[ ! -d ${ddpath} ] && echo "ddpath \"${ddpath}\" is not a directory" && exit 1

export PYTHONPATH="${ddpath}:${PYTHONPATH}"
bin="python3 -m dotdrop.dotdrop"
hash coverage 2>/dev/null && bin="coverage run -a --source=dotdrop -m dotdrop.dotdrop" || true

echo "dotdrop path: ${ddpath}"
echo "pythonpath: ${PYTHONPATH}"

# get the helpers
source ${cur}/helpers

echo -e "$(tput setaf 6)==> RUNNING $(basename $BASH_SOURCE) <==$(tput sgr0)"

################################################################
# this is the test
################################################################

# $1 path
# $2 rights
has_rights()
{
  echo "testing ${1} is ${2}"
  [ ! -e "$1" ] && echo "`basename $1` does not exist" && exit 1
  local mode=`stat -L -c '%a' "$1"`
  [ "${mode}" != "$2" ] && echo "bad mode for `basename $1` (${mode} VS expected ${2})" && exit 1
  true
}

# test $1 path has same right than $2
is_same_as()
{
  echo "testing ${1} has same rights than ${2}"
  [ ! -e "$1" ] && echo "`basename $1` does not exist" && exit 1
  [ ! -e "$2" ] && echo "`basename $2` does not exist" && exit 1

  local mode1=`stat -L -c '%a' "$1"`
  echo "$1: ${mode1}"
  local mode2=`stat -L -c '%a' "$2"`
  echo "$2: ${mode2}"

  [ "${mode1}" != "${mode2}" ] && echo "`basename $1` (${mode1}) does not have same mode as `basename $2` (${mode2})" && exit 1
  true
}

get_default_file_mode()
{
  u=`umask`
  u=`echo ${u} | sed 's/^0*//'`
  v=$((666 - u))
  echo "${v}"
}

get_default_dir_mode()
{
  u=`umask`
  u=`echo ${u} | sed 's/^0*//'`
  v=$((777 - u))
  echo "${v}"
}

# the dotfile source
tmps=`mktemp -d --suffix='-dotdrop-tests' || mktemp -d`
mkdir -p ${tmps}/dotfiles
# the dotfile destination
tmpd=`mktemp -d --suffix='-dotdrop-tests' || mktemp -d`
#echo "dotfile destination: ${tmpd}"

clear_on_exit "${tmps}"
clear_on_exit "${tmpd}"

# create the config file
cfg="${tmps}/config.yaml"

##
# non existing files
##

# file
echo 'f777' > ${tmps}/dotfiles/f777
chmod 700 ${tmps}/dotfiles/f777

# link
echo 'link' > ${tmps}/dotfiles/link
chmod 700 ${tmps}/dotfiles/link

# directory
mkdir -p ${tmps}/dotfiles/dir
echo "f1" > ${tmps}/dotfiles/dir/f1
chmod 700 ${tmps}/dotfiles/dir
chmod 700 ${tmps}/dotfiles/dir/f1

# template
echo '{{@@ profile @@}}' > ${tmps}/dotfiles/template
chmod 700 ${tmps}/dotfiles/template

# link template
echo '{{@@ profile @@}}' > ${tmps}/dotfiles/link-template
chmod 700 ${tmps}/dotfiles/link-template

##
# existing files
##

# file
echo "exists-original" > ${tmps}/dotfiles/exists
chmod 644 ${tmps}/dotfiles/exists
echo "exists" > ${tmpd}/exists
chmod 700 ${tmpd}/exists

# link
echo "existslink" > ${tmps}/dotfiles/existslink
chmod 700 ${tmps}/dotfiles/existslink
ln -s ${tmps}/dotfiles/existslink ${tmpd}/existslink

# directory
mkdir -p ${tmps}/dotfiles/direxists
echo "f1-original" > ${tmps}/dotfiles/direxists/f1
mkdir -p ${tmpd}/direxists
echo "f1" > ${tmpd}/direxists/f1
chmod 700 ${tmpd}/direxists/f1
chmod 700 ${tmpd}/direxists

# link children
mkdir -p ${tmps}/dotfiles/linkchildren
echo "f1-original" > ${tmps}/dotfiles/linkchildren/f1
chmod 700 ${tmps}/dotfiles/linkchildren/f1
mkdir -p ${tmps}/dotfiles/linkchildren/d1
chmod 700 ${tmps}/dotfiles/linkchildren/d1
echo "f2-original" > ${tmps}/dotfiles/linkchildren/d1/f2
chmod 700 ${tmps}/dotfiles/linkchildren/d1/f2

mkdir -p ${tmpd}/linkchildren
chmod 700 ${tmpd}/linkchildren
echo "f1" > ${tmpd}/linkchildren/f1
mkdir -p ${tmpd}/linkchildren/d1
echo "f2" > ${tmpd}/linkchildren/d1/f2

# no mode
echo 'nomode-original' > ${tmps}/dotfiles/nomode
echo 'nomode' > ${tmpd}/nomode

cat > ${cfg} << _EOF
config:
  backup: true
  create: true
  dotpath: dotfiles
  force_chmod: true
dotfiles:
  f_f777:
    src: f777
    dst: ${tmpd}/f777
    chmod: preserve
  f_link:
    src: link
    dst: ${tmpd}/link
    chmod: preserve
    link: absolute
  d_dir:
    src: dir
    dst: ${tmpd}/dir
    chmod: preserve
  f_template:
    src: template
    dst: ${tmpd}/template
    chmod: preserve
  f_link_template:
    src: link-template
    dst: ${tmpd}/link-template
    chmod: preserve
  f_exists:
    src: exists
    dst: ${tmpd}/exists
    chmod: preserve
  f_existslink:
    src: existslink
    dst: ${tmpd}/existslink
    chmod: preserve
    link: absolute
  d_direxists:
    src: direxists
    dst: ${tmpd}/direxists
    chmod: preserve
  d_linkchildren:
    src: linkchildren
    dst: ${tmpd}/linkchildren
    chmod: preserve
    link: link_children
  f_nomode:
    src: nomode
    dst: ${tmpd}/nomode
    chmod: preserve
profiles:
  p1:
    dotfiles:
    - f_f777
    - f_link
    - d_dir
    - f_template
    - f_link_template
    - f_exists
    - f_existslink
    - d_direxists
    - d_linkchildren
    - f_nomode
_EOF
#cat ${cfg}

exists_before=`stat -L -c '%a' "${tmpd}/exists"`
direxists_before=`stat -L -c '%a' "${tmpd}/direxists"`
direxists_f1_before=`stat -L -c '%a' "${tmpd}/direxists/f1"`

# install
echo "first round"
cd ${ddpath} | ${bin} install -f -c ${cfg} -p p1 -V
echo "first round"

# non-existing but will create with "default" rights on preserve
# 644 for file
# 755 for directory
# link will get the rights of the file it points to
has_rights "${tmpd}/f777" "`get_default_file_mode`"
has_rights "${tmpd}/link" "700"
has_rights "${tmpd}/dir" "`get_default_dir_mode`"
has_rights "${tmpd}/template" "`get_default_file_mode`"
# first install to workdir (def rights) and then symlink
has_rights "${tmpd}/link-template" "644"
[ -L "${tmpd}/link-template" ] && echo "link-template is not a symlink" && exit 1

# existing
has_rights "${tmpd}/exists" "700"
has_rights "${tmpd}/exists" "${exists_before}"

has_rights "${tmpd}/existslink" "700" # points back to dotpath
is_same_as "${tmpd}/existslink" "${tmps}/dotfiles/existslink"

has_rights "${tmpd}/direxists" "700"
has_rights "${tmpd}/direxists" "${direxists_before}"

has_rights "${tmpd}/direxists/f1" "700"
has_rights "${tmpd}/direxists/f1" "${direxists_f1_before}"

has_rights "${tmpd}/linkchildren" "700" # default for new directory
has_rights "${tmpd}/linkchildren/f1" "700" # points back to dotpath
has_rights "${tmpd}/linkchildren/d1" "700" # points back to dotpath
has_rights "${tmpd}/linkchildren/d1/f2" "700"

# modify
echo 'f777-2' >> ${tmps}/dotfiles/f777
chmod 701 ${tmps}/dotfiles/f777
echo 'link-2' >> ${tmps}/dotfiles/link
chmod 701 ${tmps}/dotfiles/link
echo "f1-2" >> ${tmps}/dotfiles/dir/f1
chmod 701 ${tmps}/dotfiles/dir
chmod 701 ${tmps}/dotfiles/dir/f1

f777_before=`stat -L -c '%a' "${tmpd}/f777"`
link_before=`stat -L -c '%a' "${tmpd}/link"`
dir_before=`stat -L -c '%a' "${tmpd}/dir"`

echo "second round"
cd ${ddpath} | ${bin} install -f -c ${cfg} -p p1 -V
echo "second round"

# existing
has_rights "${tmpd}/f777" "${f777_before}"
has_rights "${tmpd}/link" "${link_before}"
has_rights "${tmpd}/dir" "${dir_before}"

echo "OK"
exit 0