#!/usr/bin/env miaou-bash

# Constants

GIT_URL=git@git.artcode.re:miaou/miaou-bash.git

# Functions

function assert_normal_user {
  [[ "$UID" -eq 0 ]] && echo 'normal user expected' && return 1
  true
}

function assert_credentials {
  echo "check for credentials"
  local base_url
  base_url=$(echo "$GIT_URL" | cut -d: -f1)
  if ! ssh -T "${base_url}"; then
    >&2 echo "MIAOU ERROR: development mode unavailable because your credentials are missing: $base_url"
    builtin exit 2
  fi
}

function dev_mode {
  git clone "$GIT_URL"
  sudo rm "$MIAOU_BASH_DIR" -rf
  sudo ln -s "$target" "$MIAOU_BASH_DIR"
}

function assert_reachable_target {
  local parent_target
  parent_target=$(dirname "$target")
  if ! sudo -u nobody -g sudo test -x "$parent_target"; then
    cat >&2 <<EOF
MIAOU ERROR: development mode unreachable for folder: $parent_target
quick fix:
  sudo chgrp sudo $parent_target
  sudo chmod g+rx $parent_target
EOF
    return 20
  fi
}

function assert_devmode_available {
  fetch_mode
  if [[ "$MIAOU_BASH_MODE" == development ]]; then
    local realpath
    realpath=$(realpath "$MIAOU_BASH_DIR"/) # / is required to get real target
    if [[ "$MIAOU_BASH_MODE_OWNER" == "$USER" ]]; then
      echo "you are already in development mode, check for: $realpath"
      return 10
    else
      >&2 echo "MIAOU ERROR: already in develoment mode, but owned by: $MIAOU_BASH_MODE_OWNER"
      return 11
    fi
  elif [[ "$MIAOU_BASH_MODE" = hosted ]]; then
    >&2 echo "MIAOU ERROR: hosted mode detected"
    return 12
  fi
}

function fetch_target {
  local name
  name=$(echo "$GIT_URL" | cut -d/ -f2)
  name="${name%.git}"
  target="$PWD/$name"
  echo "development mode target: $target"
}

# Main

source "$MIAOU_BASH_DIR"/lib/functions.bash

assert_normal_user
assert_devmode_available
assert_credentials
fetch_target
assert_reachable_target
_confirm_destructive "target directory will be: ${target}"

dev_mode