# ============================================================
# Stage 1: Build frontend assets (Node.js + pnpm)
# ============================================================
FROM node:24-alpine3.23 AS frontend

RUN corepack enable && corepack prepare pnpm@latest --activate

WORKDIR /src/web/frontend

# Cache frontend dependencies
COPY web/frontend/package.json web/frontend/pnpm-lock.yaml ./
RUN CI=true pnpm install --frozen-lockfile

# Build frontend
COPY web/frontend/ ./
RUN pnpm build:backend

# ============================================================
# Stage 2: Build Go binaries (picoclaw + picoclaw-launcher)
# ============================================================
FROM golang:1.25-alpine AS builder

RUN apk add --no-cache git make

WORKDIR /src

# Cache Go dependencies
COPY go.mod go.sum ./
RUN go mod download

# Copy source
COPY . .

# Copy pre-built frontend assets into the backend embed directory
COPY --from=frontend /src/web/backend/dist web/backend/dist

# Build picoclaw binary (includes go generate)
RUN make build

# Build picoclaw-launcher binary (frontend already built in stage 1)
# Mirror ldflags from web/Makefile to inject version metadata
RUN CONFIG_PKG=github.com/sipeed/picoclaw/pkg/config && \
    VERSION=$(git describe --tags --always --dirty 2>/dev/null || echo dev) && \
    GIT_COMMIT=$(git rev-parse --short=8 HEAD 2>/dev/null || echo dev) && \
    BUILD_TIME=$(date +%FT%T%z) && \
    GO_VERSION=$(go env GOVERSION) && \
    CGO_ENABLED=0 go build -v -tags goolm,stdjson \
      -ldflags "-X ${CONFIG_PKG}.Version=${VERSION} -X ${CONFIG_PKG}.GitCommit=${GIT_COMMIT} -X ${CONFIG_PKG}.BuildTime=${BUILD_TIME} -X ${CONFIG_PKG}.GoVersion=${GO_VERSION} -s -w" \
      -o build/picoclaw-launcher ./web/backend/

# ============================================================
# Stage 3: Minimal runtime image
# ============================================================
FROM alpine:3.23

RUN apk add --no-cache ca-certificates tzdata curl

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget -q --spider http://localhost:18790/health || exit 1

COPY --from=builder /src/build/picoclaw /usr/local/bin/picoclaw
COPY --from=builder /src/build/picoclaw-launcher /usr/local/bin/picoclaw-launcher

ENTRYPOINT ["picoclaw-launcher"]
CMD ["-console", "-public", "-no-browser"]