ARG APP_COLOR
ARG APP_NAME

FROM node:20 as chatui-builder
ARG APP_COLOR
ARG APP_NAME

WORKDIR /app

RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
    git gettext && \
    rm -rf /var/lib/apt/lists/*

RUN git clone https://github.com/huggingface/chat-ui.git

WORKDIR /app/chat-ui

COPY .env.local.template .env.local.template

RUN mkdir defaults
ADD defaults /defaults
RUN chmod -R 777 /defaults
RUN --mount=type=secret,id=MONGODB_URL,mode=0444 \
    --mount=type=secret,id=OPENID_CLIENT_SECRET,mode=0444 \
    APP_COLOR="${APP_COLOR:="$(cat /defaults/APP_COLOR)"}" && export APP_COLOR \
    && APP_NAME="${APP_NAME:="$(cat /defaults/APP_NAME)"}" && export APP_NAME \
    && OPENID_CLIENT_ID="${OPENID_CLIENT_ID:="$(cat /defaults/OPENID_CLIENT_ID)"}" && export OPENID_CLIENT_ID \
    && MONGODB_URL=$(cat /run/secrets/MONGODB_URL) && export MONGODB_URL && \
    OPENID_CLIENT_SECRET=$(cat /run/secrets/OPENID_CLIENT_SECRET) && export OPENID_CLIENT_SECRET && \
    envsubst < ".env.local.template" > ".env.local" \ 
    && rm .env.local.template

RUN --mount=type=cache,target=/app/.npm \
    npm set cache /app/.npm && \
    npm ci

RUN npm install saslprep --save && npm run build

FROM node:20-slim

ARG APP_COLOR
ARG APP_NAME

ENV TZ=Asia/Kuala_Lumpur \
    PORT=3000

RUN npm install -g pm2

RUN mkdir /app
RUN chown -R 1000:1000 /app

RUN adduser --disabled-password --gecos "" user

# Switch to the "user" user
USER user

ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

COPY --from=chatui-builder --chown=1000 /app/chat-ui/node_modules /app/node_modules
COPY --from=chatui-builder --chown=1000 /app/chat-ui/package.json /app/package.json
COPY --from=chatui-builder --chown=1000 /app/chat-ui/build /app/build

CMD pm2 start /app/build/index.js -i $CPU_CORES --no-daemon