# Production SPA + API reverse proxy for the applicant app (frontend_user, port 8080).
# Serves the minified Vite build only — no dev server, no /src, no sourcemaps. TLS terminates
# on the host reverse proxy (Caddy/nginx); this listens HTTP inside the Docker network.

server {
    listen 8080;
    server_name _;
    server_tokens off;                      # do not advertise the nginx version

    root /usr/share/nginx/html;
    index index.html;

    # Defense-in-depth headers (inherited by locations that set no add_header of their own).
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "DENY" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "geolocation=(), microphone=(), camera=()" always;
    # A Content-Security-Policy is recommended but must enumerate the app's real sources.
    # The applicant PDF export currently pulls @react-pdf NotoSerif fonts from remote URLs —
    # self-host those first, then enable a locked-down policy, e.g.:
    #   add_header Content-Security-Policy "default-src 'self'; img-src 'self' data: blob:; style-src 'self' 'unsafe-inline'; font-src 'self' data:; connect-src 'self'" always;

    client_max_body_size 50m;

    gzip on;
    gzip_comp_level 5;
    gzip_min_length 1024;
    gzip_types text/plain text/css application/javascript application/json image/svg+xml;

    # Same-origin API + submitted PDFs → backend (the browser never talks to be0 directly).
    location /api/ {
        proxy_pass http://be0:4402;
        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_connect_timeout 300;
        proxy_send_timeout 300;
        proxy_read_timeout 300;
    }

    location /submitted-initiatives/ {
        proxy_pass http://be0:4402;
        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;
    }

    # Content-addressed build assets (hashed filenames) — safe to cache hard.
    # Only `expires` here so the server-level security headers are still inherited.
    location /assets/ {
        expires 1y;
        try_files $uri =404;
    }

    # SPA history fallback — unknown routes return index.html, never a listing or source file.
    location / {
        try_files $uri $uri/ /index.html;
    }
}
