# WyOJ web image.
#
# Build context is the REPOSITORY ROOT (see ../docker-compose.yml):
#     docker build -t wyoj-web -f web/Dockerfile .
#
# The context has to be the root because the web image also needs the judger
# tree:
#   * uoj_judger/run/formatter      -- used by dataSyncProblemData() on the web
#   * uoj_judger/include/testlib.h  -- served by /download.php
#   * judge_client.zip              -- served by /judge/download/judger
# ../.dockerignore keeps the database dump and ./uoj_data out of the context.
#
# v8js is needed by app/models/UOJBlogEditor.php (markdown -> HTML), and the
# yaml extension by yaml_parse() in that same file.
#
# NOTE on web/v8js.zip: it is a 397 KB local tarball (upstream phpv8/v8js,
# patched build used in production) and is tracked by git on purpose, so that a
# clean clone builds without network access to github.com.  If you would rather
# not track it: add it back to .gitignore and replace the COPY below with
#     RUN git clone --depth=1 https://github.com/phpv8/v8js.git /tmp/pear/download/v8js
# (note: `git clone -b <sha>` does not work with a raw commit id).
FROM ubuntu:20.04

LABEL org.opencontainers.image.source=https://git.ryp.org.cn/wyoj/wyoj-raw
LABEL org.opencontainers.image.description="WyOJ Web"
LABEL org.opencontainers.image.licenses=MIT

ENV DEBIAN_FRONTEND=noninteractive

# ---------------------------------------------------------------------------
# System packages
#
# libv8 7.5 only exists in the bionic PPA, hence the mixed release.  Importing
# the PPA key from a keyserver is flaky (and keyserver.ubuntu.com may be
# unreachable); if it fails we mark just that one repo trusted so the build
# does not depend on a keyserver being up.
# ---------------------------------------------------------------------------
RUN dpkg -s gnupg >/dev/null 2>&1 || (apt-get update && apt-get install -y gnupg); \
    echo "deb http://ppa.launchpad.net/stesie/libv8/ubuntu bionic main" \
        > /etc/apt/sources.list.d/stesie-libv8.list; \
    if ! apt-key adv --keyserver keyserver.ubuntu.com --recv-keys D858A0DF; then \
        echo "WARN: could not import the libv8 PPA key; marking that repo trusted"; \
        sed -i 's|^deb |deb [trusted=yes] |' /etc/apt/sources.list.d/stesie-libv8.list; \
    fi; \
    apt-get update && apt-get install -y \
        git vim ntp zip unzip curl wget \
        apache2 libapache2-mod-xsendfile libapache2-mod-php \
        php php-dev php-pear php-zip php-mysql php-mbstring php-gd php-intl php-xsl \
        g++ make re2c libv8-7.5-dev libyaml-dev && \
    yes | pecl install yaml && \
    rm -rf /var/lib/apt/lists/*

# ---------------------------------------------------------------------------
# v8js + yaml extensions
# ---------------------------------------------------------------------------
COPY web/v8js.zip /tmp/pear/download/
RUN set -eux; \
    cd /tmp/pear/download; \
    unzip -q v8js.zip; \
    cd v8js; \
    phpize; \
    ./configure --with-php-config=/usr/bin/php-config --with-v8js=/opt/libv8-7.5; \
    make -j"$(nproc)"; \
    make install; \
    cd /; \
    rm -rf /tmp/pear/download/v8js

# Enable the extensions for both SAPIs instead of patching php.ini by line
# number (the old `sed -i '912a\...' /etc/php/7.4/apache2/php.ini` broke the
# moment the base image changed).
RUN set -eux; \
    for sapi in apache2 cli; do \
        printf 'extension=v8js.so\nextension=yaml.so\n' > "/etc/php/7.4/${sapi}/conf.d/20-uoj.ini"; \
    done; \
    php -m | grep -qx v8js; \
    php -m | grep -qx yaml

# ---------------------------------------------------------------------------
# Judger tree
#
# The web needs this too (see the header comment).  Only run/formatter is
# actually executed here; the judge clients' self-update zip is built from the
# sources so that they recompile it themselves (judge_client runs
# `make clean && make` after unzipping).
#
# The zip is written to /opt/uoj/judge_client.zip, *not* into app/storage --
# app/storage is a bind mount at runtime and would shadow it.  install.sh -i
# copies it into place.
# ---------------------------------------------------------------------------
COPY judger /opt/uoj/judger
RUN set -eux; \
    make -C /opt/uoj/judger/uoj_judger run/formatter -j"$(nproc)"; \
    cd /opt/uoj/judger; \
    zip -q -r -y /opt/uoj/judge_client.zip judge_client uoj_judger \
        -x 'uoj_judger/data' 'uoj_judger/data/*' \
           'uoj_judger/work/*' 'uoj_judger/result/*' \
           'uoj_judger/run/formatter' \
           'log/*' '*.o'; \
    unzip -l /opt/uoj/judge_client.zip | tail -2

# ---------------------------------------------------------------------------
# Application
#
# ADD comes last so that editing PHP/CSS only invalidates the cheap layers.
# `install.sh -p` prepares apache/php config and the /var/www/uoj symlink; it
# does not touch the database (that happens at container start).
# ---------------------------------------------------------------------------
ADD web /opt/uoj/web
WORKDIR /opt/uoj/web
RUN chmod +x install.sh docker-entrypoint.sh && bash install.sh -p

ENV LANG=C.UTF-8 TZ=Asia/Shanghai
EXPOSE 80
CMD ["/bin/sh", "/opt/uoj/web/docker-entrypoint.sh"]