#!/usr/bin/env python3
"""Apply Kontra additions to a copy of configuration.nix. Test on /tmp, then run on .13."""
import sys

path = sys.argv[1]
src = open(path).read()

# --- 1) Caddy extraConfig: append reverse_proxy block before closing ''; ---
caddy_add = """
http://kontra.lab.audasmedia.com.au:8000 {
     reverse_proxy localhost:8600
   }
http://admin.kontra.lab.audasmedia.com.au:8000 {
     reverse_proxy localhost:8600
   }
http://kontra.home.lab:8000 {
     reverse_proxy localhost:8600
   }
"""
needle = "\n'';"
idx_caddy = src.index("services.caddy")
i = src.index(needle, idx_caddy)
src = src[:i] + caddy_add + needle + src[i + len(needle):]

# --- Step 2) systemd service + timer after services.caddy closes ---
services_add = """
# --- KONTRA (GOTH news-opinion site) ---
systemd.services.kontra = {
    description = "Kontra GOTH news-opinion site";
    after = [ "network-online.target" ];
    wants = [ "network-online.target" ];
    wantedBy = [ "multi-user.target" ];
    serviceConfig = {
        Type = "simple";
        User = "sam";
        Group = "users";
        WorkingDirectory = "/var/www/kontra_day";
        Environment = [ "KONTRA_CONTENT=/var/www/kontra_day/content" "KONTRA_MEDIA=/media" "PORT=8600" ];
        ExecStart = "/var/www/kontra_day/bin/kontra-bin";
        Restart = "on-failure";
        RestartSec = "3";
        NoNewPrivileges = true;
    };
};

systemd.services.kontra-pull = {
    description = "Pull Kontra content from Gitea (30s timer)";
    after = [ "network-online.target" ];
    wants = [ "network-online.target" ];
    serviceConfig = {
        Type = "oneshot";
        ExecStart = "/run/current-system/sw/bin/bash /var/www/kontra_day/deploy/kontra-pull.sh";
    };
};

systemd.timers.kontra-pull = {
    description = "Kontra content pull timer (30s)";
    wantedBy = [ "timers.target" ];
    timerConfig = {
        OnBootSec = "30s";
        OnUnitActiveSec = "30s";
        AccuracySec = "2s";
    };
};
"""
anchor = "services.caddy"
idx = src.index(anchor)
close = src.find("};", idx)  # closes services.caddy attr
insert_at = close + 2
src = src[:insert_at] + "\n" + services_add + src[insert_at:]

open(path, "w").write(src)
print("patched:", path)