# Nginx config — audiocontrol frontend
# Variables substituted at container start via envsubst:
#   $BEOCREATE_HOST  — hostname/IP of the BeoCreate Pi
#   $BEOCREATE_PORT  — hifiberrydsp REST API port (default 13141)

server {
    listen 80;
    server_name _;

    # Docker's internal DNS — resolves all upstreams lazily so nginx starts
    # even if a backend is temporarily unreachable at boot
    resolver 127.0.0.11 valid=10s ipv6=off;

    # ── Serve React SPA ──────────────────────────────────────────────────────
    root  /var/www/audiocontrol;
    index index.html;

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

    # ── HiFiBerry DSP REST API (BeoCreate Pi) ────────────────────────────────
    location /api/hifiberry/ {
        set $beocreate http://${BEOCREATE_HOST}:${BEOCREATE_PORT};
        rewrite            ^/api/hifiberry/(.*)$ /$1 break;
        proxy_pass         $beocreate;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_read_timeout 10s;
        proxy_connect_timeout 5s;
    }

    # ── Mopidy JSON-RPC (HTTP) ───────────────────────────────────────────────
    location /api/mopidy/ {
        set $mopidy http://mopidy:6680;
        rewrite            ^/api/mopidy/(.*)$ /mopidy/$1 break;
        proxy_pass         $mopidy;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_read_timeout 10s;
    }

    # ── Mopidy library images ───────────────────────────────────────────────
    location /api/mopidy-image/ {
        set $mopidy http://mopidy:6680;
        rewrite            ^/api/mopidy-image/(.*)$ /$1 break;
        proxy_pass         $mopidy;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_read_timeout 10s;
    }

    # ── Mopidy WebSocket (real-time events) ──────────────────────────────────
    location /ws/mopidy {
        set $mopidy_ws http://mopidy:6680;
        proxy_pass             $mopidy_ws/mopidy/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     86400s;
        proxy_send_timeout     86400s;
    }

    # ── Snapcast JSON-RPC (HTTP) ─────────────────────────────────────────────
    location /api/snapcast/rpc {
        set $snapserver_http http://snapserver:1780;
        rewrite            ^/api/snapcast/rpc$ /jsonrpc break;
        proxy_pass         $snapserver_http;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_read_timeout 10s;
    }

    # ── Spotify credential store (served by bandcamp-api) ───────────────────
    location /api/spotify/ {
        set $bandcamp_api http://bandcamp-api:8091;
        rewrite            ^/api/spotify/(.*)$ /spotify/$1 break;
        proxy_pass         $bandcamp_api;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_read_timeout 15s;
        proxy_connect_timeout 10s;
    }

    # ── Bandcamp API (credential store + login test) ─────────────────────────
    location /api/bandcamp/ {
        set $bandcamp_api http://bandcamp-api:8091;
        rewrite            ^/api/bandcamp/(.*)$ /$1 break;
        proxy_pass         $bandcamp_api;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_read_timeout 30s;
        proxy_connect_timeout 10s;
    }

    # ── Snapcast now playing recognition ─────────────────────────────────────
    # host.docker.internal lives in /etc/hosts (extra_hosts), not in Docker's
    # embedded DNS (127.0.0.11), so we must NOT use a set/$var here — a static
    # proxy_pass resolves via /etc/hosts at config load time and always works.
    location /api/now-playing/ {
        rewrite            ^/api/now-playing/(.*)$ /$1 break;
        proxy_pass         http://host.docker.internal:8090;
        proxy_set_header   Host              $host;
        proxy_set_header   X-Real-IP         $remote_addr;
        proxy_read_timeout 45s;
        proxy_connect_timeout 5s;
    }

    # ── Snapcast JSON-RPC WebSocket ──────────────────────────────────────────
    location /ws/snapcast {
        set $snapserver_ws http://snapserver:1780;
        rewrite                ^/ws/snapcast$ /jsonrpc break;
        proxy_pass             $snapserver_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     86400s;
        proxy_send_timeout     86400s;
    }

    # ── Gzip ─────────────────────────────────────────────────────────────────
    gzip on;
    gzip_types text/plain text/css application/javascript application/json;
    gzip_min_length 1024;
}