#!/usr/bin/env python3
"""
TP6 — Klick-Konsole fuer den Call-Durchlauf.

Zwei Aufgaben:
  1. FUEHREN: die Seite sagt jederzeit, was gerade laeuft, wie lange es noch dauert und
     was der Mensch am Telefon jetzt tun (und lassen) soll. Am Ende sagt sie unmissver-
     staendlich, dass die Messung abgeschlossen ist.
  2. MITSCHREIBEN: jeder Klick landet mit Zeitstempel in derselben Zeitachse wie der
     Core-Sampler. Der Not-Aus killt zusaetzlich sofort die Saettigungs-Flows.

🔴 Zwei Dinge, die hier absichtlich so gebaut sind:
   - Die Buttons sind server-seitig gerenderte <form>-POSTs. Faellt das JavaScript aus
     (auf dem iPad am 2026-08-20 passiert: es blieb nur der eine statische Button uebrig),
     funktioniert die Konsole trotzdem — die Seite laedt dann nach jedem Klick neu.
   - Die Seite hat ein <meta refresh>. Ohne JS aktualisiert sich die Anleitung dadurch
     trotzdem; laeuft JS, entfernt es das Meta-Tag und pollt stattdessen leise.

Aendert nichts am Netz. Bindet auf 0.0.0.0 (Bedienung vom iPad).
"""
import json
import os
import signal
import time
from http.server import BaseHTTPRequestHandler, HTTPServer

RUN_DIR = os.environ.get(
    "TP6_RUN_DIR",
    "/private/tmp/claude-501/-Users-christophemsenhuber-dev-bf-network-r6/"
    "0d86ebd1-035f-4513-a231-5cca8111ecfd/scratchpad/tp6-run2",
)
SAMPLER = os.environ.get("TP6_SAMPLER", os.path.join(RUN_DIR, "sampler.csv"))
PORT = int(os.environ.get("TP6_PORT", "3031"))

MARKERS = os.path.join(RUN_DIR, "markers.csv")
PIDFILE = os.path.join(RUN_DIR, "flows.pid")
STATE = os.path.join(RUN_DIR, "phase.json")
GO_FLAG = os.path.join(RUN_DIR, "go.flag")
ABORT_FLAG = os.path.join(RUN_DIR, "abort.flag")

os.makedirs(RUN_DIR, exist_ok=True)
if not os.path.exists(MARKERS):
    with open(MARKERS, "w") as fh:
        fh.write("ts_epoch,ts_local,marker\n")

# name, label, css-Klasse, in welchen Modi sichtbar
BUTTONS = [
    ("CALL_START", "📞 Call verbunden — Messung starten", "start", ("wartet",)),
    ("ME_BAD", "🔴 ICH höre/sehe schlecht", "bad-me", ("messung", "langzeit")),
    ("GELI_BAD", "🟠 GELI meldet: hört/sieht mich schlecht", "bad-geli", ("messung", "langzeit")),
    ("SYNC_OFF", "🎬 Lippen nicht synchron", "bad-me", ("messung", "langzeit")),
    ("OK_AGAIN", "🟢 Wieder gut", "ok", ("messung", "langzeit")),
    ("CAM_OFF", "📷 Kamera aus", "cam", ("messung", "langzeit")),
    ("CAM_ON", "📷 Kamera wieder an", "cam", ("messung", "langzeit")),
    ("WALK", "🚶 Ich gehe jetzt los", "walk", ("langzeit",)),
    ("ARRIVED", "📍 Ich stehe still", "walk", ("langzeit",)),
    ("CALL_END", "📴 Call beendet", "end", ("messung", "langzeit")),
]

DEFAULT_STATE = {
    "mode": "wartet",
    "phase": "—",
    "title": "Kein Treiber",
    "instruction": "Es läuft kein Messtreiber. Ein Start-Klick würde nichts messen.",
    "step": 0, "steps": 0, "ends": 0,
}


def read_state():
    try:
        with open(STATE) as fh:
            st = json.load(fh)
        st["driver"] = (time.time() - os.path.getmtime(STATE)) < 20
        return st
    except Exception:
        st = dict(DEFAULT_STATE)
        st["driver"] = False
        return st


def write_marker(name):
    with open(MARKERS, "a") as fh:
        fh.write("%d,%s,%s\n" % (time.time(), time.strftime("%H:%M:%S"), name))
        fh.flush()


def last_marker():
    try:
        rows = [r.strip() for r in open(MARKERS) if r.strip()]
        if len(rows) < 2:
            return "—"
        p = rows[-1].split(",")
        return "%s  (%s)" % (p[2], p[1])
    except Exception:
        return "—"


def sampler_tail():
    """Letzte Sampler-Zeile fuer die Live-Anzeige. Fehlt sie, ist das kein Fehler."""
    try:
        rows = [r.strip() for r in open(SAMPLER) if r.strip()]
        if len(rows) < 2:
            return {}
        row = dict(zip(rows[0].split(","), rows[-1].split(",")))
        return {
            "age": int(time.time() - int(row.get("ts_epoch", "0"))),
            "cpu": row.get("cpu", ""), "wan_rx": row.get("wan_rx_bps", ""),
            "wan_tx": row.get("wan_tx_bps", ""), "iface": row.get("sta_iface", ""),
            "signal": row.get("sta_signal", ""), "tx_rate": row.get("sta_tx_rate", ""),
            "sta_tx_bps": row.get("sta_tx_bps", ""), "sta_rx_bps": row.get("sta_rx_bps", ""),
        }
    except Exception:
        return {}


def kill_flows():
    """Not-Aus: Saettigungs-Flows sofort beenden."""
    killed = 0
    try:
        pids = [int(p) for p in open(PIDFILE).read().split() if p.strip().isdigit()]
    except Exception:
        pids = []
    for pid in pids:
        try:
            os.kill(pid, signal.SIGKILL)
            killed += 1
        except Exception:
            pass
    open(ABORT_FLAG, "w").close()
    return killed


AP = {"cap-wifi1": "ap1 / 5 GHz", "cap-wifi2": "ap1 / 2,4 GHz",
      "cap-wifi3": "ap2 / 5 GHz", "cap-wifi4": "ap2 / 2,4 GHz"}


def fmt_bps(v):
    try:
        n = int(v)
    except (TypeError, ValueError):
        return "—"
    return "%.1f Mbit" % (n / 1e6) if n >= 1e6 else "%d kbit" % (n // 1000)


def render(st):
    w = sampler_tail()
    rest = max(0, int(st.get("ends", 0) - time.time())) if st.get("ends") else 0
    mode = st.get("mode", "wartet")

    banner = ""
    if not st.get("driver"):
        banner = ('<div class="banner warn">⚠️ KEIN TREIBER — ein Start-Klick misst NICHTS. '
                  'Erst den Treiber starten lassen.</div>')
    elif mode == "langzeit":
        banner = ('<div class="banner done">✅ MESSUNG ABGESCHLOSSEN — die Zahlen liegen vor. '
                  'Ab jetzt läuft nur noch die Langzeit-Aufzeichnung.</div>')

    prog = ""
    if st.get("steps"):
        prog = '<div class="steps">Schritt %d von %d</div>' % (st.get("step", 0), st["steps"])

    countdown = ('<div class="cd" id="cd" data-ends="%d">noch ~%d s</div>' % (st.get("ends", 0), rest)
                 if rest else '<div class="cd" id="cd" data-ends="0"></div>')

    wlan = "—"
    if w.get("iface"):
        wlan = "%s · %s dBm · tx %s / rx %s" % (
            AP.get(w["iface"], w["iface"]), w.get("signal", "?"),
            fmt_bps(w.get("sta_tx_bps")), fmt_bps(w.get("sta_rx_bps")))

    btns = "\n".join(
        '<form method="post" action="/m?type=%s" onsubmit="return send(event,\'%s\')">'
        '<button class="%s" type="submit">%s</button></form>' % (n, n, c, l)
        for n, l, c, modes in BUTTONS if mode in modes
    )

    return PAGE.format(
        banner=banner, title=st.get("title", "—"), phase=st.get("phase", "—"),
        instruction=st.get("instruction", ""), prog=prog, countdown=countdown,
        wlan=wlan, wan="rx %s / tx %s · CPU %s%%" % (fmt_bps(w.get("wan_rx")),
                                                     fmt_bps(w.get("wan_tx")), w.get("cpu", "?")),
        last=last_marker(), buttons=btns,
    )


PAGE = """<meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1">
<meta http-equiv="refresh" content="8" id="metaref">
<title>TP6 — Call-Konsole</title><style>
:root{{color-scheme:dark}}
body{{margin:0;padding:14px;background:#14161a;color:#e8eaed;
     font:16px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}}
.banner{{padding:12px 14px;border-radius:10px;font-weight:700;margin-bottom:12px}}
.warn{{background:#7f1d1d;color:#fff}} .done{{background:#14532d;color:#d1fae5}}
.card{{background:#1c1f26;border:1px solid #2a2f3a;border-radius:12px;padding:14px;margin-bottom:12px}}
.phase{{font-size:13px;color:#7dd3fc;text-transform:uppercase;letter-spacing:.06em}}
h2{{margin:4px 0 8px;font-size:21px}}
.inst{{font-size:17px;color:#e8eaed}}
.cd{{margin-top:10px;font:600 15px ui-monospace,Menlo,monospace;color:#fbbf24}}
.steps{{margin-top:6px;font-size:13px;color:#9aa4b2}}
.live{{background:#1c1f26;border:1px solid #2a2f3a;border-radius:10px;padding:10px 12px;
      margin-bottom:14px;font:13px/1.7 ui-monospace,Menlo,monospace;white-space:pre-wrap;color:#9aa4b2}}
button{{width:100%;margin:0 0 10px;padding:20px 16px;font-size:19px;font-weight:600;border:none;
       border-radius:12px;background:#262b34;color:#e8eaed;-webkit-tap-highlight-color:transparent}}
button:active{{filter:brightness(1.3)}}
.start{{background:#14532d}} .bad-me{{background:#7f1d1d}} .bad-geli{{background:#7c3f12}}
.ok{{background:#166534}} .cam{{background:#2b3648}} .walk{{background:#1e3a5f}} .end{{background:#3a2b4a}}
.abort{{background:#b91c1c;font-size:23px;padding:30px 16px;box-shadow:0 0 0 3px #7f1d1d inset}}
form{{margin:0}}
</style>
{banner}
<div class="card">
  <div class="phase">{phase}</div>
  <h2>{title}</h2>
  <div class="inst">{instruction}</div>
  {countdown}
  {prog}
</div>
<div class="live">WLAN    {wlan}
WAN     {wan}
Marker  {last}</div>
{buttons}
<form method="post" action="/m?type=ABORT" onsubmit="return send(event,'ABORT')">
  <button class="abort" type="submit">⛔ LAST SOFORT STOPPEN</button></form>
<script>
// JS ist Komfort, keine Voraussetzung: die Buttons sind Formulare, die Anleitung kommt
// notfalls per <meta refresh>. Laeuft JS, ersetzen wir das durch leises Nachladen.
window.onerror = function(m, s, l, c){{
  try{{ fetch('/jserr?msg=' + encodeURIComponent(m + ' @' + l + ':' + c), {{method:'POST'}}); }}catch(e){{}}
}};
function send(ev, name){{
  try{{
    ev.preventDefault();
    fetch('/m?type=' + encodeURIComponent(name), {{method:'POST'}}).then(refresh);
    var b = ev.target.querySelector('button');
    if(b){{ b.style.filter='brightness(1.6)'; setTimeout(function(){{b.style.filter='';}},400); }}
    return false;
  }}catch(e){{ return true; }}   // im Zweifel den normalen Form-POST durchlassen
}}
function refresh(){{
  fetch('/').then(function(r){{return r.text();}}).then(function(html){{
    var d = document.createElement('html'); d.innerHTML = html;
    var n = d.querySelector('.card'), o = document.querySelector('.card');
    if(n && o) o.replaceWith(n);
    var nb = d.querySelector('.live'), ob = document.querySelector('.live');
    if(nb && ob) ob.replaceWith(nb);
    var nban = d.querySelector('.banner'), oban = document.querySelector('.banner');
    if(nban && oban) oban.replaceWith(nban); else if(nban && !oban) document.body.prepend(nban);
    tick();
  }}).catch(function(){{}});
}}
function tick(){{
  var el = document.getElementById('cd'); if(!el) return;
  var ends = parseInt(el.dataset.ends || '0', 10); if(!ends) {{ el.textContent=''; return; }}
  var r = Math.max(0, ends - Math.floor(Date.now()/1000));
  el.textContent = r ? 'noch ~' + r + ' s' : 'gleich weiter …';
}}
var mr = document.getElementById('metaref'); if(mr) mr.remove();   // JS lebt -> kein Vollreload
setInterval(tick, 1000); setInterval(refresh, 3000);
// Bildschirm wachhalten: gesperrtes iPad = kein Not-Aus.
async function wake(){{ try{{ if('wakeLock' in navigator) await navigator.wakeLock.request('screen'); }}catch(e){{}} }}
document.addEventListener('visibilitychange', function(){{ if(!document.hidden) wake(); }});
wake();
</script>"""


class Handler(BaseHTTPRequestHandler):
    def _send(self, code, body, ctype="application/json"):
        raw = body.encode("utf-8")
        self.send_response(code)
        self.send_header("Content-Type", ctype + "; charset=utf-8")
        self.send_header("Content-Length", str(len(raw)))
        self.send_header("Cache-Control", "no-store")
        self.end_headers()
        self.wfile.write(raw)

    def _back(self):
        self.send_response(303)
        self.send_header("Location", "/")
        self.send_header("Content-Length", "0")
        self.end_headers()

    def do_GET(self):
        if self.path.startswith("/status"):
            st = read_state()
            st["sampler"] = sampler_tail()
            st["last"] = last_marker()
            self._send(200, json.dumps(st))
        elif self.path in ("/", "/index.html"):
            self._send(200, render(read_state()), "text/html")
        else:
            self._send(404, "{}")

    def do_POST(self):
        if self.path.startswith("/jserr"):
            with open(os.path.join(RUN_DIR, "jserrors.log"), "a") as fh:
                fh.write("%s %s\n" % (time.strftime("%H:%M:%S"), self.path.split("msg=", 1)[-1]))
            self._send(200, "{}")
            return
        if self.path.startswith("/m?"):
            name = self.path.split("type=", 1)[1].split("&")[0].upper()
            if name == "ABORT":
                write_marker("ABORT_killed=%d" % kill_flows())
            else:
                if name == "CALL_START":
                    open(GO_FLAG, "w").close()
                write_marker(name)
            if "text/html" in (self.headers.get("Accept") or ""):
                self._back()
            else:
                self._send(200, json.dumps({"ok": True}))
        else:
            self._send(404, "{}")

    def log_message(self, *_a):
        pass


if __name__ == "__main__":
    print("Konsole: http://localhost:%d/   ·   vom iPad: http://10.40.10.183:%d/" % (PORT, PORT))
    print("Marker  -> %s" % MARKERS)
    HTTPServer(("0.0.0.0", PORT), Handler).serve_forever()