# ==============================================================================
# MERICA Data Lakehouse — Clean Release Appliance Dockerfile
# ==============================================================================
# Multi-stage Dockerfile packaging Vite React Frontend, FastAPI Modular Backend,
# Nginx Reverse Proxy, and Supervisord into a single, decoupled appliance image.
#
# Build Command:
#   docker build -t registry.sicabe.com/merica:1.0.0 .
# ==============================================================================

# ------------------------------------------------------------------------------
# Stage 1: Build Frontend Assets
# ------------------------------------------------------------------------------
FROM node:20-alpine AS frontend-builder
WORKDIR /frontend

# Install dependencies and build static bundle
COPY frontend/package*.json ./
RUN npm install --legacy-peer-deps

COPY frontend/ ./
RUN npm run build

# ------------------------------------------------------------------------------
# Stage 2: MERICA Clean Appliance Runtime
# ------------------------------------------------------------------------------
FROM python:3.11-slim AS appliance

LABEL maintainer="BPKP Data Lakehouse Team <dlh@bpkp.go.id>"
LABEL description="MERICA Data Lakehouse - Production Appliance Image"
LABEL version="1.0.0"

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    nginx \
    supervisor \
    curl \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Install Python dependencies
COPY backend/requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt

# Copy Backend application code
COPY backend/app ./app

# Copy Built Frontend artifacts to Nginx docroot
COPY --from=frontend-builder /frontend/dist /usr/share/nginx/html

# Setup Nginx, Supervisord, and Entrypoint
RUN mkdir -p /etc/nginx/conf.d /etc/supervisor/conf.d /var/log/supervisor /app/configs /app/storage /app/data /app/merica-pipelines/configs /app/merica-pipelines/metadata /app/merica-pipelines/dbt

# Nginx Single-Port Reverse Proxy Configuration
RUN cat <<'EOF' > /etc/nginx/conf.d/default.conf
server {
    listen 80;
    server_name localhost;

    # Frontend Static Assets
    location / {
        root /usr/share/nginx/html;
        index index.html index.htm;
        try_files $uri $uri/ /index.html;
    }

    # Internal Loopback Proxy to FastAPI (127.0.0.1:8000)
    location /api/ {
        proxy_pass http://127.0.0.1:8000/api/;
        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_connect_timeout 60s;
        proxy_read_timeout 120s;

        # WebSocket support
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    # OpenAPI Documentation
    location /docs {
        proxy_pass http://127.0.0.1:8000/docs;
    }
    location /openapi.json {
        proxy_pass http://127.0.0.1:8000/openapi.json;
    }
}
EOF
RUN rm -f /etc/nginx/sites-enabled/default

# Supervisord Configuration (Dual Daemon: Nginx + Uvicorn)
RUN cat <<'EOF' > /etc/supervisor/conf.d/supervisord.conf
[supervisord]
nodaemon=true
logfile=/var/log/supervisor/supervisord.log
pidfile=/var/run/supervisord.pid

[program:nginx]
command=/usr/sbin/nginx -g "daemon off;"
autostart=true
autorestart=true
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0

[program:uvicorn]
directory=/app
command=python -m uvicorn app.main:app --host 127.0.0.1 --port 8000 --workers 2
autostart=true
autorestart=true
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
EOF

# Entrypoint script
RUN cat <<'EOF' > /entrypoint.sh
#!/bin/bash
set -e
echo "🚀 Starting MERICA Appliance..."
exec /usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf
EOF
RUN chmod +x /entrypoint.sh

EXPOSE 80

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
    CMD curl -f http://127.0.0.1/api/v1/health || exit 1

ENTRYPOINT ["/entrypoint.sh"]