# syntax=docker/dockerfile:1
#
# One image, three commands. docker-compose runs it three times with different
# entrypoints (api / frontend / redirect). See docker-compose.yml.

# --- 1. Build the SPA -------------------------------------------------------
FROM node:20-alpine AS frontend
WORKDIR /app
COPY package.json package-lock.json* ./
RUN npm ci 2>/dev/null || npm install
COPY index.html vite.config.ts tsconfig*.json postcss.config.js tailwind.config.js ./
COPY src ./src
COPY public ./public
RUN npm run build   # -> /app/dist

# --- 2. Build the Go binary -------------------------------------------------
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 GOOS=linux go build -trimpath -ldflags="-s -w" -o /out/snip ./cmd/snip

# --- 3. Minimal runtime -----------------------------------------------------
FROM alpine:3.20
RUN apk add --no-cache ca-certificates wget && adduser -D -u 10001 snip
WORKDIR /app
COPY --from=backend /out/snip /usr/local/bin/snip
COPY --from=frontend /app/dist ./web
ENV FRONTEND_DIST=/app/web
USER snip
# Default command; compose overrides with api / frontend / redirect.
ENTRYPOINT ["snip"]
CMD ["api"]