FROM golang:1.25-alpine AS backend
WORKDIR /src
COPY backend/go.mod backend/go.sum ./
RUN go mod download
COPY backend/ .
RUN CGO_ENABLED=0 go build -o /server ./cmd/server/

FROM node:22-alpine AS frontend
WORKDIR /src
COPY frontend/package.json frontend/package-lock.json ./
RUN npm ci
COPY frontend/ .
RUN npm run build

FROM alpine:3.21
RUN apk add --no-cache ca-certificates tzdata
RUN apk add --no-cache steamcmd libstdc++ libgcc || true

COPY --from=backend /server /usr/local/bin/arma3-web-server
COPY --from=frontend /src/dist /usr/share/arma3-web-server/frontend

EXPOSE 8080
VOLUME ["/data", "/servers"]

# Expected mount structure under /servers:
#   /servers/              ← SERVERFILE_DIR (arma3server_x64 binary, userconfig/)
#   /servers/steamapps/workshop/content/107410/  ← workshop mods (downloaded via SteamCMD)
#   /servers/mods/         ← MODS_DIR (@modname mod folders)
#   /servers/cfg/          ← CFG_DIR (.cfg files)
#   /servers/profiles/     ← PROFILES_DIR (logs, .rpt, server profile)
ENV DATA_DIR=/data
ENV SERVERFILE_DIR=/servers
ENV MODS_DIR=/servers/mods
ENV CFG_DIR=/servers/cfg
ENV PROFILES_DIR=/servers/profiles
ENV LISTEN=:8080
ENV FRONTEND_DIR=/usr/share/arma3-web-server/frontend
ENV GIN_MODE=release

ENTRYPOINT ["arma3-web-server"]