# === STAGE 1: Build & Dependencies ===
FROM arm64v8/node:22 AS builder

WORKDIR /app

# Install pnpm and enable corepack
RUN corepack enable && corepack prepare pnpm@latest --activate

# Copy the lockfile and package.json to leverage caching
COPY package.json pnpm-lock.yaml ./

# Use a cache mount to persist the pnpm store across builds.
# The 'pnpm install' command will use this persistent cache.
RUN --mount=type=cache,target=/root/.local/share/pnpm/store/v3 \
    pnpm install --frozen-lockfile

# Copy the rest of the application files
COPY . .

# Use a second cache mount for the Vinxi build artifacts.
RUN --mount=type=cache,target=/app/.vinxi \
    pnpm run build

# === STAGE 2: Generate Production-only Files ===
FROM arm64v8/node:22 AS production_builder

RUN corepack enable && corepack prepare pnpm@latest --activate
# Install jq to process the package.json file.
# Note: jq is not in the base image, so we must install it.
RUN apt-get update && apt-get install -y jq

WORKDIR /app

# Copy the original lockfile and package.json from the builder stage.
COPY --from=builder /app/package.json ./
COPY --from=builder /app/pnpm-lock.yaml ./

# Create a new, production-only package.json file.
# We use 'jq' to remove the 'devDependencies' key from the original package.json.
RUN jq 'del(.devDependencies)' package.json > package.prod.json

# Now, generate a production-only pnpm-lock.yaml
# We run `pnpm install` again, but with `--prod`, and it will
# generate a new lockfile based on the stripped-down dependencies.
RUN --mount=type=cache,target=/root/.local/share/pnpm/store/v3 pnpm install --prod
RUN --mount=type=cache,target=/root/.local/share/pnpm/store/v3 pnpm prune --prod

# === STAGE 3: Final Production Image ===
FROM arm64v8/node:22-alpine

WORKDIR /app

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

# Copy the production-only files from the production_builder stage.
COPY --from=production_builder /app/package.prod.json ./package.json
COPY --from=production_builder /app/pnpm-lock.yaml ./pnpm-lock.yaml

# Now pnpm install will be very fast, as the cache is not invalidated by devDependency changes.
# It uses the production-only package.json and lockfile.
RUN --mount=type=cache,target=/root/.local/share/pnpm/store/v3 \
    pnpm install --frozen-lockfile --prod

# Copy the compiled assets from the original builder stage.
COPY --from=builder /app/.output ./.output

EXPOSE 3000

CMD ["pnpm", "start"]