# syntax=docker/dockerfile:1
# SPDX-License-Identifier: AGPL-3.0-or-later
# This file is part of Wolfree.
# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

FROM alpine

WORKDIR /app/

# Install all dependencies.

RUN \
    apk add \
    -- \
    wget \
    npm \
    gcc \
    rustup \
    ;

RUN \
    rustup-init -y

COPY \
    ./docusaurus/package.json \
    ./docusaurus/package.json

RUN \
    npm install \
    --prefix ./docusaurus/ \
    -- \
    ;

# WolframAlpha LLC prebuilt the website and kindly deployed it on the Internet.
# We can run Wget to download the web pages and save them as static pages.

RUN \
    wget \
    --directory-prefix=./docusaurus/static/ \
    --no-host-directories \
    --page-requisites \
    --convert-links \
    --no-verbose \
    -- \
    'https://www.wolframalpha.com/input/index.html' \
    'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.0/jquery.min.js' \
    'https://cdnjs.cloudflare.com/ajax/libs/dompurify/3.0.5/purify.min.js' \
    ; \
    : \
    ;

RUN \
    sed \
    -e 's|.*js...static.chunks...........||' \
    -e 's|"........js.....miniCssF.*|.js\n|' \
    -e 's|:"|.|g' \
    -e 's|",|.js\n|g' \
    -- \
    ./docusaurus/static/_next/static/chunks/webpack-*.js \
    | \
    wget \
    --directory-prefix=./docusaurus/static/ \
    --no-host-directories \
    --page-requisites \
    --convert-links \
    --no-verbose \
    --input-file=- \
    --base=https://www.wolframalpha.com/_next/static/chunks/ \
    -- \
    ; \
    : \
    ;

RUN \
    sed \
    -e 's|.*return.static.css.....||' \
    -e 's|.........css.......function.*|.css\n|' \
    -e 's|[0-9]*:"||g' \
    -e 's|",|.css\n|g' \
    -- \
    ./docusaurus/static/_next/static/chunks/webpack-*.js \
    | \
    wget \
    --directory-prefix=./docusaurus/static/ \
    --no-host-directories \
    --page-requisites \
    --convert-links \
    --no-verbose \
    --input-file=- \
    --base=https://www.wolframalpha.com/_next/static/css/ \
    -- \
    ; \
    : \
    ;

# Delete unused large files on the static website.

RUN \
    truncate \
    -s 0 \
    -- \
    ./docusaurus/static/_next/static/images/* \
    ;

# Build the Docusaurus static website.

COPY \
    ./docusaurus/ \
    ./docusaurus/

RUN \
    npm run \
    --prefix ./docusaurus/ \
    -- \
    build \
    ;

# Lint the source code and run the Rust program.
# The Rust program customizes the static pages.

COPY \
    ./rust/ \
    ./rust/

RUN \
    PATH="$HOME/.cargo/bin:$PATH" \
    cargo clippy \
    --manifest-path ./rust/wolfree_libredirect_patch/Cargo.toml \
    -- \
    --warn clippy::all \
    --warn clippy::cargo \
    --warn clippy::nursery \
    --warn clippy::pedantic \
    --warn clippy::restriction \
    ;

RUN \
    PATH="$HOME/.cargo/bin:$PATH" \
    cargo clippy \
    --manifest-path ./rust/wolfree_sed_in_place/Cargo.toml \
    -- \
    --warn clippy::all \
    --warn clippy::cargo \
    --warn clippy::nursery \
    --warn clippy::pedantic \
    --warn clippy::restriction \
    ;

# Optionally, customize Wolfree instances to suit LibRedirect.
# https://github.com/libredirect/browser_extension/issues/425
# To integrate Wolfree with LibRedirect, please delete the number sign at the beginning of the following line.
# RUN PATH="$HOME/.cargo/bin:$PATH" cargo run --manifest-path ./rust/wolfree_libredirect_patch/Cargo.toml -- ;

RUN PATH="$HOME/.cargo/bin:$PATH" cargo run --manifest-path ./rust/wolfree_sed_in_place/Cargo.toml -- ;

# Optimizing builds with cache management | Docker Documentation
# https://docs.docker.com/build/cache/
# Because a change causes a rebuild for steps that follow,
# try to make expensive steps appear near the beginning of the Dockerfile.
# Steps that change often should appear near the end of the Dockerfile to avoid triggering rebuilds of layers that haven't changed.

CMD \
    npm run \
    --prefix ./docusaurus/ \
    -- \
    serve \
    --port 80 \
    --host localhost \
    ;

EXPOSE 80