# syntax=docker/dockerfile:1

# ------------------------------------------------------------------------------
# Stage 1: Install frontend dependencies (Native execution on host architecture)
# ------------------------------------------------------------------------------
FROM --platform=$BUILDPLATFORM node:22-bookworm-slim AS deps
WORKDIR /app/frontend

COPY frontend/package.json frontend/package-lock.json* ./
RUN --mount=type=cache,target=/root/.npm \
    npm ci

# ------------------------------------------------------------------------------
# Stage 2: Build the TanStack Start frontend (Native execution on host architecture)
# ------------------------------------------------------------------------------
FROM --platform=$BUILDPLATFORM node:22-bookworm-slim AS builder
WORKDIR /app/frontend

COPY --from=deps /app/frontend/node_modules ./node_modules
COPY frontend/ ./

ENV NODE_ENV=production
RUN npm run build

# ------------------------------------------------------------------------------
# Stage 3: Fetch PocketBase binary for target architecture (Native host downloader)
# ------------------------------------------------------------------------------
FROM --platform=$BUILDPLATFORM alpine:3.20 AS pb-downloader
ARG TARGETARCH
ARG PB_VERSION=0.40.2

RUN apk add --no-cache curl unzip ca-certificates \
  && case "${TARGETARCH}" in \
       amd64) PB_ARCH="amd64" ;; \
       arm64) PB_ARCH="arm64" ;; \
       arm)   PB_ARCH="armv7" ;; \
       *) echo "Unsupported target architecture: ${TARGETARCH}" >&2; exit 1 ;; \
     esac \
  && curl -fsSL -o /tmp/pb.zip "https://github.com/pocketbase/pocketbase/releases/download/v${PB_VERSION}/pocketbase_${PB_VERSION}_linux_${PB_ARCH}.zip" \
  && unzip /tmp/pb.zip -d /app \
  && chmod +x /app/pocketbase \
  && rm -f /tmp/pb.zip

# ------------------------------------------------------------------------------
# Stage 4: Production runner (Target architecture)
# ------------------------------------------------------------------------------
FROM node:22-bookworm-slim AS runner
LABEL maintainer="Amritanshu <docker@tanshu.com>"

RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    ca-certificates \
  && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copy PocketBase binary and migrations
COPY --from=pb-downloader /app/pocketbase /app/pocketbase
COPY backend/pb_migrations /app/pb_migrations

# Copy compiled frontend application
COPY --from=builder /app/frontend/.output /app/frontend/.output

# Copy entrypoint script
COPY docker-entrypoint.sh /app/docker-entrypoint.sh
RUN chmod +x /app/docker-entrypoint.sh

# Environment variables
ENV NODE_ENV=production \
    PORT=3000 \
    HOST=0.0.0.0 \
    PB_DATA_DIR=/app/pb_data

# Persistent data volume for PocketBase SQLite database and file storage
VOLUME ["/app/pb_data"]

# Port 3000: TanStack Start Web Application
# Port 8090: PocketBase REST API & Admin UI
EXPOSE 3000 8090

# Health check for both PocketBase and frontend server
HEALTHCHECK --interval=15s --timeout=3s --start-period=5s --retries=3 \
  CMD curl -fsS http://127.0.0.1:8090/api/health > /dev/null && curl -fsS http://127.0.0.1:3000 > /dev/null || exit 1

ENTRYPOINT ["/app/docker-entrypoint.sh"]