#!/bin/bash

set -xue

. ./config.sh

PREV_ID=$(cat "$DEALS_PREV_MESSAGE_ID_FOR_REGISTRATIONS" || echo "")

NEW_PREV_ID_FILE="${DEALS_PREV_MESSAGE_ID_FOR_REGISTRATIONS}.new"
TEXT_FILE="${DEALS_BASE}/message.txt"

python get_bm_message.py \
    --to-address "$DEALS_BM_FOR_REGISTRATIONS" \
    --prev-id "$PREV_ID" \
    --output-id "$NEW_PREV_ID_FILE" \
    --output-text "$TEXT_FILE" \
    --from-address /dev/null

if [ ! -f "$NEW_PREV_ID_FILE" ]; then
    echo "No new messages"
    exit 0
fi

NAME=$(grep "name: " "$TEXT_FILE" | sed "s/^name: //" || echo "")

if [ "$NAME" == "" ]; then
    echo "Failed to parse registration message"
else
    if ! ( echo "$NAME" | egrep --quiet '^[a-zA-Z0-9_]{3,10}$' ) ; then
        echo "Name ${NAME} is not acceptable"
    else
        mkdir -p "$DEALS_REG_DB_ROOT"
        DB_FILE="${DEALS_REG_DB_ROOT}/${NAME}"

        if [ -f "$DB_FILE" ]; then
            echo "User ${NAME} already exists"
        else
            echo "Registering user ${NAME}"
            mv "$TEXT_FILE" "$DB_FILE"
        fi
    fi
fi

mv "$NEW_PREV_ID_FILE" "$DEALS_PREV_MESSAGE_ID_FOR_REGISTRATIONS"