###   BUILDER
FROM ubuntu:18.10 as builder
RUN apt -y update \
   && apt -y install gcc
COPY ./pause /pause
RUN cd /pause && gcc ./main.c -o pauser

###   RUNNER
FROM ubuntu:18.10

COPY --from=builder /pause/pauser /pauser

###   POSTGRES
RUN groupadd postgres && useradd -d /home/postgres -ms /bin/bash -g postgres -G sudo postgres
RUN apt -y update \
   && apt -y install \
      curl \
      rsync \
      cron \
      postgresql postgresql-contrib \
   && mkdir -p /mnt/save
USER postgres
RUN service postgresql start && sleep 10 \
   && psql --command "CREATE USER bel WITH SUPERUSER PASSWORD 'letme123in';" \
   && createdb -O bel letme123in \
   && psql --command "CREATE DATABASE db;" \
   && psql --command "GRANT ALL PRIVILEGES ON DATABASE db TO bel;" \
   && service postgresql stop && sleep 10

ENV DATABASE_URL=postgres://bel:letme123in@localhost/db?sslmode=disable
USER root

###   Synapse/matrix
RUN wget -qO - https://matrix.org/packages/debian/repo-key.asc \
   | apt-key add - \
   && add-apt-repository https://matrix.org/packages/debian/ \
   && apt install -y matrix-synapse

### CRON BACKUPS
RUN true \
   && echo 'service postgresql stop && sleep 5 && b=$(date +%Y%m%d%H) && mkdir -p /mnt/save/$b && rsync -avzP --delete /var/lib/postgresql/10/main/ /mnt/save/$b/ && service postgresql start' > /backup.sh \
   && echo 'service postgresql stop && sleep 5 && b=$(find /mnt/save -mindepth 1 -maxdepth 1 | sort | tail -n 1); if [ -n "$b" ]; then rsync -avzP --delete "${b%/}/" /var/lib/postgresql/10/main/; fi && chown -R postgres /var/lib/postgresql && chmod -R 0700 /var/lib/postgresql && service postgresql start;' > /restore.sh \
   && echo '0 4,8,12,16,20 * * * bash /backup.sh >> /var/log/cronj.log 2>&1' > /etc/cron.d/backups \
   && echo '' >> /etc/cron.d/backups \
   && chmod 0644 /etc/cron.d/backups \
   && touch /var/log/cronj.log

ENTRYPOINT \
   bash /restore.sh \
   && service postgresql start \
   && sleep 10 \
   && miniflux & exec /pauser