# HSOSKY PlayWeb - cau hinh nginx mau
#
# Dat vao /etc/nginx/sites-available/playweb roi:
#   ln -s /etc/nginx/sites-available/playweb /etc/nginx/sites-enabled/
#   nginx -t && systemctl reload nginx
#
# Doi server_name va duong dan root cho khop may cua ban.

server {
    listen 80;
    listen [::]:80;
    server_name play.hsosky.com;          # <-- doi ten mien

    root /var/www/playweb/public;         # <-- doi duong dan
    index index.html;

    # ---- Nen ----
    # gzip_static uu tien file .gz da nen san (classes.js.gz 765KB thay vi
    # 10.4MB). Neu ban nginx khong co module nay thi bo dong duoi va dua vao
    # gzip on ben duoi.
    gzip_static on;

    gzip on;
    gzip_vary on;
    gzip_comp_level 6;
    gzip_min_length 1024;
    gzip_types application/javascript text/javascript text/css text/html application/json image/svg+xml;

    # ---- Cau noi WebSocket -> TCP (BAT BUOC) ----
    # Khong co phan nay thi game khong the ket noi may chu, se ket o man
    # dang nhap. bridge.mjs phai dang chay o 127.0.0.1:8081.
    location /socket-bridge {
        proxy_pass http://127.0.0.1:8081;
        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;

        # Ket noi game mo lau va co luc im lang -> dung de nginx tu ngat
        proxy_read_timeout  1h;
        proxy_send_timeout  1h;
        proxy_buffering off;
    }

    # ---- Tai nguyen co danh phien ban (?v=N) ----
    # App luon goi kem ?v=N va doi so do moi khi noi dung doi, nen cache
    # duoc vinh vien. Neu ban mo thang /classes.js khong kem ?v thi co the
    # nhan ban cu trong cache - do la danh doi da biet truoc.
    location ~* \.(js|css)$ {
        add_header Cache-Control "public, max-age=31536000, immutable";
        access_log off;
    }

    # ---- JAR tai nguyen game ----
    # Khong danh phien ban nen dung ETag: het han thi hoi lai, giong nhau
    # thi nhan 304 rong thay vi tai lai 2.7MB.
    location ~* \.(jar|jad)$ {
        add_header Cache-Control "public, max-age=3600, must-revalidate";
        access_log off;
    }

    # ---- Trang HTML ----
    # Khong duoc cache lau: day la cho chua so ?v moi, cache no la nguoi
    # choi mac ket o ban cu.
    location = /index.html { add_header Cache-Control "no-cache"; }
    location = /play.html  { add_header Cache-Control "no-cache"; }

    # /play chay duoc nhu /play.html
    location = /play { try_files /play.html =404; }

    location / {
        try_files $uri $uri/ /index.html;
    }
}

# ---- HTTPS ----
# Sau khi chay certbot, no tu them block 443. Luu y: trang https thi game
# tu dung wss:// - khoi phai sua gi, mien la location /socket-bridge o tren
# duoc chep sang block 443 (certbot thuong tu lam).