#syntax=docker/dockerfile:1.2

FROM golang:1.18-stretch as build
RUN apt-get update && apt-get install -y postgresql
WORKDIR /build

# No password when connecting over localhost
RUN sed -i "s%127.0.0.1/32            md5%127.0.0.1/32            trust%g" /etc/postgresql/9.6/main/pg_hba.conf && \
    # Bump up max conns for moar concurrency
    sed -i 's/max_connections = 100/max_connections = 2000/g' /etc/postgresql/9.6/main/postgresql.conf

# This entry script starts postgres, waits for it to be up then starts dendrite
RUN echo '\
    #!/bin/bash -eu \n\
    pg_lsclusters \n\
    pg_ctlcluster 9.6 main start \n\
    \n\
    until pg_isready \n\
    do \n\
    echo "Waiting for postgres"; \n\
    sleep 1; \n\
    done \n\
    ' > run_postgres.sh && chmod +x run_postgres.sh

# we will dump the binaries and config file to this location to ensure any local untracked files
# that come from the COPY . . file don't contaminate the build
RUN mkdir /dendrite

# Utilise Docker caching when downloading dependencies, this stops us needlessly
# downloading dependencies every time.
ARG CGO
RUN --mount=target=. \
    --mount=type=cache,target=/go/pkg/mod \
    --mount=type=cache,target=/root/.cache/go-build \
    CGO_ENABLED=${CGO} go build -o /dendrite ./cmd/generate-config && \
    CGO_ENABLED=${CGO} go build -o /dendrite ./cmd/generate-keys && \
    CGO_ENABLED=${CGO} go build -o /dendrite/dendrite ./cmd/dendrite && \
    CGO_ENABLED=${CGO} go test -c -cover -covermode=atomic -o /dendrite/dendrite-cover -coverpkg "github.com/matrix-org/..." ./cmd/dendrite && \
    cp build/scripts/complement-cmd.sh /complement-cmd.sh

WORKDIR /dendrite
RUN ./generate-keys --private-key matrix_key.pem

ENV SERVER_NAME=localhost
ENV API=0
ENV COVER=0
EXPOSE 8008 8448


# At runtime, generate TLS cert based on the CA now mounted at /ca
# At runtime, replace the SERVER_NAME with what we are told
CMD /build/run_postgres.sh && ./generate-keys --keysize 1024 --server $SERVER_NAME --tls-cert server.crt --tls-key server.key --tls-authority-cert /complement/ca/ca.crt --tls-authority-key /complement/ca/ca.key && \
    ./generate-config -server $SERVER_NAME --ci --db postgresql://postgres@localhost/postgres?sslmode=disable > dendrite.yaml && \
    # Bump max_open_conns up here in the global database config
    sed -i 's/max_open_conns:.*$/max_open_conns: 1990/g' dendrite.yaml && \
    cp /complement/ca/ca.crt /usr/local/share/ca-certificates/ && update-ca-certificates && \
    exec /complement-cmd.sh