# ============================================================
# STAGE 1: Build the React/Vite Frontend
# ============================================================
FROM node:20-alpine AS frontend-build
WORKDIR /app/frontend

# Copy package files and install dependencies
COPY F_Pro/package.json F_Pro/package-lock.json ./
RUN npm ci

# Copy the rest of the frontend source
COPY F_Pro/ .

# Build-time env vars that Vite bakes into the static bundle.
# Pass them with --build-arg in `docker build` or set them
# as HuggingFace Space secrets (they become ARGs automatically).
ARG VITE_GOOGLE_CLIENT_ID
ARG VITE_STRIPE_PUBLISHABLE_KEY
# For HuggingFace the app is served on port 7860, so the API
# lives on the same host. Override these if you use an external backend.
ARG VITE_API_BASE_URL=http://localhost:7860/api
ARG VITE_WS_URL=ws://localhost:7860/ws

ENV VITE_GOOGLE_CLIENT_ID=$VITE_GOOGLE_CLIENT_ID
ENV VITE_STRIPE_PUBLISHABLE_KEY=$VITE_STRIPE_PUBLISHABLE_KEY
ENV VITE_API_BASE_URL=$VITE_API_BASE_URL
ENV VITE_WS_URL=$VITE_WS_URL

RUN npm run build
# Output is in /app/frontend/dist

# ============================================================
# STAGE 2: Build the Spring Boot Backend
# ============================================================
FROM maven:3.9.6-eclipse-temurin-21 AS backend-build
WORKDIR /app/backend

# Cache Maven dependencies separately from source
COPY quran-app-backend/pom.xml .
RUN mvn dependency:go-offline -B

# Build the JAR
COPY quran-app-backend/src ./src
RUN mvn clean package -DskipTests
# Output is in /app/backend/target/*.jar

# ============================================================
# STAGE 3: Final runtime image
# ============================================================
FROM eclipse-temurin:21-jre-jammy
WORKDIR /app

# ---------- system packages ----------
RUN apt-get update && apt-get install -y --no-install-recommends \
        nginx \
        ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# ---------- Nginx config ----------
# Nginx listens on 7860 (the port HuggingFace Spaces exposes).
# Static files are served directly; /api/** and /ws/** are proxied
# to the Spring Boot process running on 3000 internally.
RUN rm -f /etc/nginx/sites-enabled/default
COPY <<'NGINX_EOF' /etc/nginx/conf.d/quranapp.conf
server {
    listen 7860;
    server_name _;

    # Serve the React SPA
    root /app/static;
    index index.html;

    # API proxy → Spring Boot
    location /api/ {
        proxy_pass http://127.0.0.1:3000/api/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_read_timeout 300s;
	proxy_send_timeout 300s;
	proxy_connect_timeout 300s;
	client_max_body_size 50M;
    }

    # WebSocket proxy → Spring Boot
    location /ws/ {
        proxy_pass http://127.0.0.1:3000/ws/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 3600s;
    }

    # SPA fallback — all other paths return index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}
NGINX_EOF

# ---------- Copy built artifacts ----------
COPY --from=frontend-build /app/frontend/dist /app/static
COPY --from=backend-build  /app/backend/target/*.jar /app/app.jar

# ---------- Startup script ----------
# HuggingFace Spaces require a single process entry point.
# We start Spring Boot in the background, then hand control to Nginx.
COPY <<'STARTUP_EOF' /app/start.sh
#!/bin/bash
set -e

echo "==> Starting Spring Boot on port 3000..."
java -jar /app/app.jar &

echo "==> Waiting for Spring Boot to be ready..."
until curl -sf http://127.0.0.1:3000/actuator/health > /dev/null 2>&1; do
    sleep 2
done

echo "==> Spring Boot is ready. Starting Nginx on port 7860..."
nginx -g "daemon off;"
STARTUP_EOF

RUN chmod +x /app/start.sh

# HuggingFace Spaces only expose port 7860
EXPOSE 7860

CMD ["/app/start.sh"]