`rails new <appname>` + project cloning for Node.js apps

node-appgen

#!/bin/sh
# node-appgen

SD=$(dirname "${BASH_SOURCE[0]}")
CALLER_PATH=$(pwd)
COPY_SRC="$SD/node-appgen-default"
INSTALLER="$SD/node-appgen-default/node-appgen-installs"

EMAIL=$(git config user.email || "")
AUTHOR=$(git config user.name || id -F || id -un || whoami)
NAME=$(id -F || id -un || whoami || git config user.name )

###############################################################################

main () {

  display_welcome
  check_args

  if $DIR_MISSING; then 
    fancyfail "Copy Directory Missing"
    echo_blue "Make sure $COPY_SRC exists. It should also contain 'node-appgen-installs'"
  elif $INST_MISSING; then
    fp_color=33
    fancyprompt "$INSTALLER missing." '' '' exit
  fi

  tasks_before_install "$@" 

  # Run Installers -------------------------------------------------------
  if $INST_MISSING; then pipe "Installing Node Packages"

    install_packages () { RUN_NPM=true; source "$INSTALLER"; run_appgen_installs; }

    m="About to run installers in:\n"
    m="${m}\n\t$SRC_DIR_NAME/node-appgen-installs\n\nMake a selection:"
    fp_color=34
    fancyprompt "$m" install_packages install_packages npm_install_cancel
  fi

  # Copy Project ---------------------------------------------------------
  pipe "Copying project files and folders from template"

  copy_project () { cp -an $COPY_SRC/. $PROJ_PATH/; }

  m="Are you sure you want to run the npm installers from $SRC_DIR_NAME?\n"
  m="${m}No files will be overriden. $COPY_SRC is default source."
  m="${m}Hit enter to proceed or enter a different path and hit enter"
  fp_color=34
  fancyprompt "$m" copy_project copy_project cancel_copy

  if $RUN_NPM; then # ----------------------------------------------------
    line "Running: npm install" 
    cd $PROJ_PATH
    npm install
  fi
}

###############################################################################

check_args () {

  # check arguments_______________________________________________________

  if [ "$#" -eq 0 ]; then
    DIR_MISSING=false
    DESC=''
    if [ "$(ls -A $CALLER_PATH)" ]; then
      m="This directory is not empty! This will create a new app here."
      fancyprompt "$m" '' '' abort_appgen
    fi
    PROJ_PATH=$(abs_path "$CALLER_PATH")
  elif [ "$#" -eq 2 ]; then
    mkdir "$1"
    PROJ_PATH=$(abs_path "${CALLER_PATH}/${1}")

    if [ -d "$2" ]; then 
      COPY_SRC=$(abs_path "$2")
      DIR_MISSING=false
      if [ -f "$2/node-appgen-installs" ]; then 
        INST_MISSING=false
        INSTALLER="$COPY_SRC/node-appgen-installs"

      else
        INSTALLER="$2/node-appgen-installs" # for fail display
        INST_MISSING=true
        RUN_NPM=false
      fi
    else
      COPY_SRC="$2" # for fail display
      DIR_MISSING=true
    fi
  else # TODO: add help menu
    echo_magenta "Incorrect number of arguments" 
  fi
}

tasks_before_install () {

  SRC_DIR_NAME=$(basename "$COPY_SRC")

  echo "gathering project variables..."

  local HAS_JSON=false; local HAS_GIT=false 

  if [ -d "$PROJ_PATH" ]; then # inspect any pre-existing content
    echo_blue "found directory with matching name"

    # store name of readme if found: 
    local README=$(ls "$PROJ_PATH" | grep -i readme) 
    if [ -f "$PROJ_PATH/package.json" ]; then HAS_JSON=true; fi
    if [ -d "$PROJ_PATH/.git" ];         then HAS_GIT=true; fi
  else
    mkdir $PROJ_PATH
  fi

  cd $PROJ_PATH

  if $HAS_GIT; then 
    echo_magenta ".git found"

    local SSH=`git remote -v | grep -m1 "^origin"`
    [ -z "$SSH" ] || SSH=`git remote -v | grep -m1 ''`
    local HOST=$(sed 's/.*@\(.*\):.*/\1/' <<< "$SSH") # get b/w @ and :
    AUTHOR=$(sed 's/.*:\(.*\)\/.*/\1/'    <<< "$SSH") # get b/w : and /
    PROJ=$(sed 's/.*\/\(.*\)\.git.*/\1/'  <<< "$SSH") # get b/w / and .git
    URL="https://$HOST/$AUTHOR/$PROJ"
  else
    PROJ=$(basename "$PROJ_PATH")
    if $(has_spaces "$AUTHOR"); then AUTHOR=$(stripwhite_downcase "$AUTHOR"); fi
    URL="https://github.com/$AUTHOR/$PROJ"
  fi
  # _______________________________________________________
  # package.json

  declare_string_templates

  if $HAS_JSON; then
    echo_magenta "package.json found. Skipping..."
  else
    printf "\nCreating package.json file with the following info:\n\n"
    printf "You:     $NAME\nProject: $PROJ $URL\nAuthor:  $AUTHOR $EMAIL\n\n"
    echo "More info will be added when packages are installed"
    printf "$PACKAGE_JSON" > $PROJ_PATH/package.json
  fi
  # ______________________________________________________________________
  # README.md -silence warning while installing packages by making non-empty
  if [ -z "$README" ]; then
    echo
    echo "Creating README.md"
    printf "$README_MD" > $PROJ_PATH/README.md
  else
    if [ -s "$PROJ_PATH/$README" ]; then  : # file has content so do nothing
    else echo "# " >> $PROJ_PATH/$README    # need something to avoid npm warnings
    fi
  fi
}

###############################################################################
# Special Responders

npm_install_cancel () { RUN_NPM=false }
cancel_msg    () { echo "action canceled."; }
abort_appgen  () { echo "Goodbye"; exit 0;  }

# ____________________________________________________________________________
# STRING TEMPLATES:

declare_string_templates () {
PACKAGE_JSON=$(cat <<EOF
{
  "name": "$PROJ",
  "version": "0.0.1",
  "description": "$DESC",
  "author": "$AUTHOR <$EMAIL>",
    "contributors": [{
    "name": "$NAME",
    "email": "$EMAIL"
  }],
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "$URL"
  },
  "private": "true",
  "license": "MIT"
}
EOF
)

README_MD=$(cat <<EOF
# $PROJ
[version 0.0.1]($URL)  
$DESC
EOF
)
}

# ___________________________________________________________
# just some utilities for executing this script:

echo_blue    () { echo "\033[34m$1\033[0m"; }
echo_green   () { echo "\033[32m$1\033[0m"; }
echo_red     () { echo "\033[31m$1\033[0m"; }
echo_magenta () { echo "\033[35m$1\033[0m"; }

bar () {
  echo
  echo '###############################################################'
  echo "######## $1"
}
pipe () {
  echo
  echo '============================================================='
  echo "======== $1"
}
line () {
  echo
  echo '___________________________________________________________'
  echo "________ $1"
}
display_welcome () {
  bar "node-appgen ##########################################"
}

fancyprompt () {
  if [[ -z $fp_color ]]; then fp_color=33; fi
  local beg="\033[$fp_color;1m"; local end="\033[0m\n"
  printf "\033[$fp_color;5;7m\t____/ attention \____\t\t$end"
  printf "${beg}${1}${end}"
  printf "$beg - 'c'\t\tto skip or\n - [return]\tto continue$end > "
  fp_color=33;
  local reply=''
  if [[ -z $TMOUT ]]; then TMOUT=10; fi
  read reply
  if [ "$#" -eq 2 ]; then

    if   [[ "$reply" != 'c' ]]; then $2 $reply # not 'c'. default or custom 
    fi

  elif [ "$#" -eq 3 ]; then

    if   [[ -z $reply ]];       then $2        # default (timeout or [enter])
    elif [[ "$reply" != 'c' ]]; then $3 $reply # not 'c' with custom reply
    fi

  elif [ "$#" -eq 4 ]; then

    if   [[ -z $reply ]];       then $2        # default (timeout or [enter])
    elif [[ "$reply" != 'c' ]]; then $3 $reply # not 'c' with custom reply
    else                             $4        # reply was 'c'
    fi
  fi
}
fancyfail () {
  if [[ -z $fail_color ]]; then fail_color=31; fi
  local beg="\033[$fail_color;3m"; local end="\033[0m\n"
  printf "\033[$fail_color;1;7m\t____/ attention \____\t\t$end"
  printf "${beg}${1}${end}"
}
abs_path () {
  # use double quotes for paths with spaces etc
  ABS_PATH=`cd "$1"; pwd` 
  echo "$ABS_PATH"
}
stripwhite_downcase () {
  local var=$(printf "$1" | tr "[:upper:]" "[:lower:]")
  printf "$var" | tr -d '[[:space:]]'
}
has_spaces () {
  if [[ "$1" != "${1/ /}" ]]
   then echo true
  else echo false
  fi
}
is_int () {
  if [[ $1 =~ ^-?[0-9]+$ ]]
   then echo true
  else  echo false
  fi 
}

###############################################################################
# execution starts here:

main "$@"

node-appgen-rc1

#!/bin/sh
# node-appgen resource

npm_cmdlist=(
  "npm install --save express"
  "npm install --save grunt"
  "npm install --save-dev coffee-script"
  "npm install --save jade"
  "npm install --save grunt-sass"
  "npm install grunt-contrib-watch --save-dev"
)
WD=$(pwd)
clone_src="$WD/node-appgen-src1"

z_note_to_self

  echo_blue "Generating project files and folders"
  cp -an $clone_src/. $PROJ_DIR/
  echo_blue "All packages installed."