#!/bin/bash
#
# tig-login [-n] [-a] [-t] username|organization
# Authorize with tig and cloud providers

set -e

TIG_ROOT="${TIG_HOME-"$HOME/.tig"}"
TIGRC_PATH="$TIG_ROOT/tigrc"
. "$TIGRC_PATH"

install=false
clone=false
upgrade=false
reinstall=false
delete=false
start=false
stop=false
restart=false

usage_short="${BLUE}usage: tig-link [-C] [-I] [-U] [-R] [-D] [-s] [-z] [-r]"
usage_long="$usage_short\n-C: configures tig-link server (overwrites)"
usage_long="$usage_long\n-I: installs tig-link web server"
usage_long="$usage_long\n-U: upgrades tig-link web server"
usage_long="$usage_long\n-R: reinstall tig-link web server (-D -> -I)"
usage_long="$usage_long\n-D: deletes tig-link web server"
usage_long="$usage_long\n-s: starts tig-link web server"
usage_long="$usage_long\n-z: stops tig-link web server"
usage_long="$usage_long\n-r: restarts tig-link web server${NC}"

usage_short="$usage_short\nuse -h to get supported command information${NC}"

if [ "$#" == "0" ] ; then
  >&2 echo -e "$usage_short"
  exit 1
fi

options=":CIURDszrh"
shopt -u nocasematch
OPTIND=1
while getopts "$options" opt ; do
    case "$opt" in
    C )
      configure=true
      ;;
    I )
      install=true
      ;;
    U )
      upgrade=true
      ;;
    R )
      reinstall=true
      ;;
    D )
      delete=true
      ;;
    s )
      start=true
      ;;
    z )
      stop=true
      ;;
    r )
      restart=true
      ;;
    h )
      >&2 echo -e "$usage_long" && exit 1
      exit 0
      ;;
    \?)
      >&2 echo -e "Unknown option: -$OPTARG"
      >&2 echo -e "$usage_short"
      exit 1
      ;;
    : )
      >&2 echo -e "Missing option argument for -$OPTARG"
      >&2 echo -e "$usage_short"
      exit 1
      ;;
    * )
      >&2 echo -e "Unimplemented option: -$OPTARG" && exit 1
      >&2 echo -e "$usage_short"
      exit 1
    esac
done
shift $((OPTIND-1))

app_config_path="$TIG_ROOT/tig-link.json"
app_root="$TIG_ROOT/tig-link"
app_etc_root="$app_root/etc"
app_config_default_path="$app_etc_root/tig-link.json"

if [ ! -d "$app_root" ] || [ "$reinstall" = true ] ; then
  >&2 echo -e "${CYAN}- reinstalling tig-link... -${NC}"
  rimraf "$app_root"
  mkdirp "$TIG_ROOT"
  pushd "$TIG_ROOT" >/dev/null
    git clone "$GIT_TIG_LINK_URL"  &>/dev/null
  popd >/dev/null
  >&2 echo -e "${GREEN}- reinstalled $app_root -${NC}"
fi

if [ "$configure" = true ] ; then
  >&2 echo -e "${CYAN}- configuring tig-link... -${NC}"
  rimraf "$app_config_path"
  >&2 echo -n "jwt secret:"
  read jwt_secret
  >&2 echo -n "github client id:"
  read github_client_id
  >&2 echo -n "github client secret:"
  read github_client_secret
  >&2 echo -n "mongo credentials:"
  read mongo_credentials
  >&2 echo -n "mongo url:"
  read mongo_url

  cat "$app_config_default_path" | sed -e "s/<jwt_secret>/$jwt_secret/" -e "s/<github_client_id>/$github_client_id/" -e "s/<github_client_secret>/$github_client_secret/" -e "s/<mongo_credentials>/$mongo_credentials/" -e "s/<mongo_url>/$mongo_url/"  >"$app_config_path"

  >&2 echo -e "${GREEN}- initialized $app_config_path -${NC}"
fi

if [ "$install" = true ] ; then

  if [ ! -d "$app_root" ] ; then
    >&2 echo -e "${CYAN}- tig-link not configured, use tig link -C... -${NC}"
    exit 1
  fi

  tig install -w

  pushd "$app_root" >/dev/null
    >&2 echo -e "${CYAN}- updating tig-link... -${NC}"
    git pull origin master
    >&2 echo -e "${CYAN}- installing npm production dependencies... -${NC}"
    npm install --production
    >&2 echo -e "${GREEN}- tig-link server installed successfully -${NC}"
  popd >/dev/null
fi

if [ "$start" = true ] ; then
  pushd "$app_root" >/dev/null
    node server
  popd >/dev/null
fi