# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

# Base layer containing dependencies needed at runtime. This layer will be
# cached after the initial build.
FROM debian:stretch as runtime

MAINTAINER CouchDB Developers dev@couchdb.apache.org

# Add CouchDB user account
RUN groupadd -g 5984 -r couchdb && useradd -u 5984 -d /opt/couchdb -g couchdb couchdb

RUN apt-get update -y && apt-get install -y \
        apt-transport-https \
        ca-certificates \
        curl \
        dirmngr \
        gnupg \
        libicu57 \
        libssl1.1 \
        openssl \
        python \
    && echo "deb https://apache.bintray.com/couchdb-deb stretch main" \
        | tee /etc/apt/sources.list.d/couchdb.list \
    && cat /etc/apt/sources.list.d/couchdb.list \
    && for server in $(shuf -e pgpkeys.mit.edu \
            ha.pool.sks-keyservers.net \
            hkp://p80.pool.sks-keyservers.net:80 \
            pgp.mit.edu) ; do \
        gpg --keyserver $server --recv-keys 379CE192D401AB61 && break || : ; \
        done \
    && gpg -a --export 379CE192D401AB61 | apt-key add - \
    && apt-get update -y && apt-get install -y --no-install-recommends couch-libmozjs185-1.0 \
    && rm -rf /var/lib/apt/lists/*

# grab gosu for easy step-down from root and tini for signal handling
# see https://github.com/apache/couchdb-docker/pull/28#discussion_r141112407
ENV GOSU_VERSION 1.10
ENV TINI_VERSION 0.16.1
RUN set -ex; \
    apt-get update; \
    apt-get install -y --no-install-recommends wget; \
    rm -rf /var/lib/apt/lists/*; \
    dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
# install gosu
    wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/${GOSU_VERSION}/gosu-$dpkgArch"; \
    wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
    export GNUPGHOME="$(mktemp -d)"; \
        for server in $(shuf -e pgpkeys.mit.edu \
            ha.pool.sks-keyservers.net \
            hkp://p80.pool.sks-keyservers.net:80 \
            pgp.mit.edu) ; do \
        gpg --keyserver $server --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 && break || : ; \
        done; \
	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
	rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc; \
	chmod +x /usr/local/bin/gosu; \
	gosu nobody true; \
    \
# install tini
	wget -O /usr/local/bin/tini "https://github.com/krallin/tini/releases/download/v${TINI_VERSION}/tini-$dpkgArch"; \
	wget -O /usr/local/bin/tini.asc "https://github.com/krallin/tini/releases/download/v${TINI_VERSION}/tini-$dpkgArch.asc"; \
	export GNUPGHOME="$(mktemp -d)"; \
        for server in $(shuf -e pgpkeys.mit.edu \
            ha.pool.sks-keyservers.net \
            hkp://p80.pool.sks-keyservers.net:80 \
            pgp.mit.edu) ; do \
        gpg --keyserver $server --recv-keys 595E85A6B1B4779EA4DAAEC70B588DFF0527A9B7 && break || : ; \
        done; \
	gpg --batch --verify /usr/local/bin/tini.asc /usr/local/bin/tini; \
	rm -rf "$GNUPGHOME" /usr/local/bin/tini.asc; \
	chmod +x /usr/local/bin/tini; \
	tini --version; \
	\
	apt-get purge -y --auto-remove wget

# Dependencies only needed during build time. This layer will also be cached
FROM runtime AS build_dependencies

RUN apt-get update -y && apt-get install -y --no-install-recommends \
    apt-transport-https \
    build-essential \
    couch-libmozjs185-dev \
    erlang-nox \
    erlang-reltool \
    erlang-dev \
    git \
    libcurl4-openssl-dev \
    libicu-dev \
    python-setuptools \ 
    python-pip \
    python-sphinx \
    python-wheel

RUN pip install --upgrade \
    sphinx_rtd_theme

# Node is special
RUN set -ex; \
    curl -s https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -; \
    echo 'deb https://deb.nodesource.com/node_8.x stretch main' > /etc/apt/sources.list.d/nodesource.list; \
    echo 'deb-src https://deb.nodesource.com/node_8.x stretch main' >> /etc/apt/sources.list.d/nodesource.list; \
    apt-get update -y && apt-get install -y nodejs; \
    npm install -g grunt-cli

# Clone CouchDB source code including all dependencies
ARG clone_url=https://github.com/apache/couchdb.git
RUN git clone $clone_url /usr/src/couchdb
WORKDIR /usr/src/couchdb
RUN ./configure

# This layer performs the actual build of a relocatable, self-contained
# release of CouchDB. It pulls down the latest changes from the remote
# origin (because the layer above will be cached) and switches to the
# branch specified in the build_arg (defaults to master)
FROM build_dependencies AS build

ARG checkout_branch=master
ARG configure_options

WORKDIR /usr/src/couchdb/
RUN git fetch origin \
    && git checkout $checkout_branch \
    && ./configure $configure_options \
    && make release

# This results in a single layer image (or at least skips the build stuff?)
FROM runtime
COPY --from=build /usr/src/couchdb/rel/couchdb /opt/couchdb

# Add configuration
COPY local.ini /opt/couchdb/etc/default.d/
COPY vm.args /opt/couchdb/etc/
COPY docker-entrypoint.sh /

# Setup directories and permissions
RUN chown -R couchdb:couchdb /opt/couchdb/etc/default.d/ /opt/couchdb/etc/vm.args

WORKDIR /opt/couchdb
EXPOSE 5984 4369 9100
VOLUME ["/opt/couchdb/data"]

ENTRYPOINT ["tini", "--", "/docker-entrypoint.sh"]
CMD ["/opt/couchdb/bin/couchdb"]