# The Tera API, as one small image.
#
# TypeScript is not compiled: Node runs the .ts sources directly by stripping
# types at load, which is why there is no build stage, no dist/ and no source
# maps to keep in sync. It is also why `erasableSyntaxOnly` is on in
# server/tsconfig.json — an enum or a parameter property would break the runtime
# and not the typecheck, which is the worst possible order to find out.
#
# The build context is the repo root, because the server's type contract lives
# in the root package at src/server/wire.ts.

FROM node:24-alpine

WORKDIR /app

# The lockfile and both manifests, so the layer cache survives a source change.
COPY package.json package-lock.json ./
COPY server/package.json ./server/

# Only the server workspace's production dependencies. Without --workspace this
# would also install three.js, which the API has no use for.
RUN npm ci --omit=dev --workspace @lumbridge/tera-api

# The whole browser package's source, for the sake of src/server/wire.ts. Every
# import of it is type-only and is erased before anything is loaded, so none of
# this is read at runtime — it is here so that a typecheck inside the image tells
# the truth.
COPY src ./src
COPY server/src ./server/src

ENV NODE_ENV=production
# Inside a container, loopback is a different loopback. This is the only reason
# TERA_HOST exists.
ENV TERA_HOST=0.0.0.0
EXPOSE 8431

USER node
CMD ["node", "server/src/index.ts"]