# ── Build Stage ─────────────────────────────────
FROM golang:1.23-alpine AS builder

RUN apk add --no-cache git ca-certificates

WORKDIR /build

# Copy shared package first.
COPY pkg/ ./pkg/

# Copy service module.
COPY services/cart/ ./services/cart/

# Tidy the shared package.
WORKDIR /build/pkg
RUN go mod tidy

# Tidy and download dependencies for the service.
WORKDIR /build/services/cart
RUN go mod tidy && go mod download

# Build binary.
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 \
    go build -ldflags="-s -w" -o /bin/cart-service ./cmd/server

# ── Runtime Stage ───────────────────────────────
FROM alpine:3.19

RUN apk add --no-cache ca-certificates tzdata && \
    addgroup -S damsle && adduser -S damsle -G damsle

COPY --from=builder /bin/cart-service /usr/local/bin/cart-service

USER damsle

EXPOSE 8081

HEALTHCHECK --interval=10s --timeout=3s --start-period=5s --retries=3 \
    CMD wget -qO- http://localhost:8081/healthz || exit 1

ENTRYPOINT ["cart-service"]
