bail

#!/usr/bin/env bash

set -euo pipefail

# -----------------------------------------------------------------------------
# CONFIG
# -----------------------------------------------------------------------------

__VERSION="0.1"
__NAME="Template App"
__FILE=$(basename "$0")
__CACHE=${XDG_STATE_HOME:=$HOME/.config/state}/bail
readonly __VERSION __FILE __NAME __CACHE
mkdir -p "$__CACHE"

current_account="$__CACHE"/account
touch "$current_account"

url="https://api.mail.tm"
readonly url

password='D~%8W_UE'
custom_password=0

# -----------------------------------------------------------------------------
# PRIVATE interfaces
# -----------------------------------------------------------------------------

function _get_domain {
  domain=$(curl -s "$url/domains" | jq -r '."hydra:member"[0].domain')
  echo "$domain"
}

function _random {
  openssl rand -hex "${1:-5}"
}

function _gen_password {
  if [ "$custom_password" == 0 ]; then
    custom_password=1
    if command -v pwgen &> /dev/null; then
      password=$(pwgen -Cns 20 1)
    else
      password=$(_random 10)
    fi
  fi
}

# -----------------------------------------------------------------------------
# PUBLIC interfaces
# -----------------------------------------------------------------------------

function create { # Create a new account, create [prefix]
  __parse_options "$@"
  _gen_password
  domain=$(_get_domain)
  if [[ -n $* ]]; then
    address=$*"@$domain"
  else
    address=$(_random)"@$domain"
  fi
  data='{ "address":"'$address'", "password":"'$password'" }'
  account=$(curl -s "$url/accounts" \
    -H 'Content-Type: application/json' \
    -d "$data")
  echo "$account" | jq '.+= {"password":"'"$password"'"}' > "$__CACHE"/account
  echo "created"
  jq ".address" "$current_account"
}

function me { # List all created acounts
  address=$(jq -r ".address" < "$current_account")
  pass=$(jq -r ".password" < "$current_account")
  token=$(_token "$address" "$pass")
  curl -s "$url/me" -H "Authorization:Bearer $token" | jq
}

function delete { # Delete an account
  __parse_options "$@"
  id=$(jq -r '.id' < "$current_account")
  address=$(jq -r ".address" < "$current_account")
  pass=$(jq -r ".password" < "$current_account")
  token=$(_token "$address" "$pass")
  curl -s -XDELETE "$url/accounts/$id" -H "Authorization:Bearer $token"
  rm "$current_account"
  echo "deleted current account"
}

function _token {
  curl -s "$url/token" \
    -H 'Content-Type: application/json' \
    -d '{"address":"'"$1"'", "password":"'"$2"'"}' \
    | jq -r ".token"
}

function messages { # get messages
  address=$(jq -r ".address" < "$current_account")
  pass=$(jq -r ".password" < "$current_account")
  token=$(_token "$address" "$pass")
  messages=$(curl -s "$url/messages" -H "Authorization:Bearer $token")
  opts=$(echo "$messages" | jq -r '."hydra:member"[] | .from.name +"<"+ .from.address +">√"+ .subject' | column -t -s "√")
  mapfile -t opts <<< "$opts"
  c=0
  for i in "${opts[@]}"; do
    echo -e "$c\t$i"
    c=$((c + 1))
  done
  echo -n "pick a number: "
  read -r picked
  msg=$(echo "$messages" | jq -r '."hydra:member"['"$picked"'] .id')
  message=$(curl -s "$url/messages/$msg" -H "Authorization:Bearer $token")
  echo "from:"
  echo "$message" | jq -r '.from.name + "<" + .from.address + ">"'
  echo ""
  echo "subject:"
  echo "$message" | jq -r '.subject'
  echo ""
  echo "message:"
  echo -e "$(echo "$message" | jq -r '.text')"
}

# -----------------------------------------------------------------------------

function help { # Display this helpful help information
  local functions
  functions=$(grep -E "^function [^_]*?$" "$0" | sed -E "s/ *{ *# */#/g" | column -t -s '#' | sed -E "s/^function /   /g" | sort)
  echo "$__NAME v $__VERSION"
  echo "Usage: $__FILE <task> [args]"
  echo ""
  echo "Tasks:"
  echo "$functions"
  echo "args:"
  echo "   -p   define custom password"
  echo ""
}

function __parse_options {
  while getopts "p:" o; do
    case "$o" in
      p)
        password=${OPTARG:-$password}
        custom_password=1
        ;;
      *) ;;

    esac
  done
  shift $((OPTIND - 1))
}

"${@:-help}"