# Stage 1: Build
FROM node:20-alpine AS builder

# Métadonnées
LABEL maintainer="Yt2Jellyfin"
LABEL description="Frontend React pour Yt2Jellyfin"

# Définir le répertoire de travail
WORKDIR /app

# Copier les fichiers de dépendances
COPY package*.json ./

# Installer les dépendances (avec cache npm)
RUN npm ci --only=production

# Copier le code source
COPY . .

# Build de l'application
RUN npm run build

# Stage 2: Production avec Nginx
FROM nginx:1.25-alpine AS production

# Installer des outils de sécurité et nettoyer
RUN apk add --no-cache \
    ca-certificates \
    tzdata \
    && rm -rf /var/cache/apk/*

# Créer un utilisateur non-root
RUN addgroup -g 1001 -S nginx-app && \
    adduser -S -D -H -u 1001 -h /var/cache/nginx -s /sbin/nologin -G nginx-app -g nginx-app nginx-app

# Copier les fichiers buildés depuis le stage builder
COPY --from=builder --chown=nginx-app:nginx-app /app/dist /usr/share/nginx/html

# Configuration Nginx sécurisée
COPY --chown=nginx-app:nginx-app <<EOF /etc/nginx/nginx.conf
user nginx-app;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    log_format main '\$remote_addr - \$remote_user [\$time_local] "\$request" '
                    '\$status \$body_bytes_sent "\$http_referer" '
                    '"\$http_user_agent" "\$http_x_forwarded_for"';

    access_log /var/log/nginx/access.log main;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    client_max_body_size 10M;

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml text/javascript application/json application/javascript application/xml+rss application/rss+xml font/truetype font/opentype application/vnd.ms-fontobject image/svg+xml;

    server {
        listen 80;
        server_name _;
        root /usr/share/nginx/html;
        index index.html;

        # Désactiver les tokens de version Nginx
        server_tokens off;

        # Logs
        access_log /var/log/nginx/access.log main;
        error_log /var/log/nginx/error.log warn;

        # Gestion des assets statiques avec cache
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }

        # SPA routing - toutes les routes vers index.html
        location / {
            try_files \$uri \$uri/ /index.html;
            add_header Cache-Control "no-cache";
        }

        # Proxy vers le backend (optionnel, si sur même réseau)
        location /api {
            proxy_pass http://backend:3000;
            proxy_http_version 1.1;
            proxy_set_header Upgrade \$http_upgrade;
            proxy_set_header Connection 'upgrade';
            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_cache_bypass \$http_upgrade;
            proxy_connect_timeout 30s;
            proxy_send_timeout 30s;
            proxy_read_timeout 30s;
        }

        # Bloquer l'accès aux fichiers sensibles
        location ~ /\. {
            deny all;
            access_log off;
            log_not_found off;
        }
    }
}
EOF

# Créer les dossiers nécessaires avec bonnes permissions
RUN mkdir -p /var/cache/nginx /var/log/nginx /var/run && \
    chown -R nginx-app:nginx-app /var/cache/nginx /var/log/nginx /var/run /usr/share/nginx/html && \
    chmod -R 755 /usr/share/nginx/html

# Exposer le port
EXPOSE 80

# Healthcheck
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --quiet --tries=1 --spider http://localhost/ || exit 1

# Passer à l'utilisateur non-root
USER nginx-app

# Démarrer Nginx
CMD ["nginx", "-g", "daemon off;"]