import { useEffect, useMemo, useState } from 'react';
import { Trash2, Search, Loader2 } from 'lucide-react';
import { LookupCallsign, DXCCForCountry } from '../../wailsjs/go/main/App';
import {
  Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription,
} from '@/components/ui/dialog';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Textarea } from '@/components/ui/textarea';
import { Tabs, TabsList, TabsTrigger, TabsContent } from '@/components/ui/tabs';
import { Badge } from '@/components/ui/badge';
import {
  Select, SelectTrigger, SelectValue, SelectContent, SelectItem,
} from '@/components/ui/select';
import { Checkbox } from '@/components/ui/checkbox';
import { Combobox } from '@/components/ui/combobox';
import { cn } from '@/lib/utils';
import { flagURL } from '@/lib/flags';
import type { QSOForm } from '@/types';

type QSO = QSOForm;

// Quick prefix from a callsign (drops portable suffixes, keeps a slashed
// prefix). Read-only display, mirrors Log4OM's PFX box.
function pfxOf(call: string): string {
  const c = (call || '').trim().toUpperCase();
  if (!c) return '';
  const base = c.includes('/') ? c.split('/')[0] : c;
  let lastDigit = -1;
  for (let i = 0; i < base.length; i++) if (base[i] >= '0' && base[i] <= '9') lastDigit = i;
  return lastDigit >= 0 ? base.slice(0, lastDigit + 1) : base;
}

const BANDS = ['160m','80m','60m','40m','30m','20m','17m','15m','12m','10m','6m','4m','2m','70cm','23cm'];
const MODES = ['SSB','CW','FT8','FT4','RTTY','PSK31','AM','FM','DIGITALVOICE','MFSK','OLIVIA','JS8','JT65','JT9'];
const QSL_STATUSES = [
  { value: '_', label: '—' },
  { value: 'Y', label: 'Yes' },
  { value: 'N', label: 'No'  },
  { value: 'R', label: 'Requested' },
  { value: 'I', label: 'Ignore' },
];
const PROP_MODES = ['_','AS','AUE','AUR','BS','ECH','EME','ES','F2','F2M','FAI','GWAVE','INTERNET','ION','IRL','LOS','MS','RPT','RS','SAT','TEP','TR'];

// Confirmation channels — each maps to its QSO sent/received status, dates and
// (paper-only) via fields. Drives the "Manage Confirmation" editor and the
// live status grid (Log4OM style).
type ConfDef = {
  key: string; label: string;
  sent?: keyof QSOForm; rcvd?: keyof QSOForm;
  sentDate?: keyof QSOForm; rcvdDate?: keyof QSOForm;
  via?: keyof QSOForm;
};
const CONFIRMATIONS: ConfDef[] = [
  { key: 'QSL',     label: 'QSL (paper)', sent: 'qsl_sent',  rcvd: 'qsl_rcvd',  sentDate: 'qsl_sent_date',  rcvdDate: 'qsl_rcvd_date',  via: 'qsl_via' },
  { key: 'LOTW',    label: 'LoTW',        sent: 'lotw_sent', rcvd: 'lotw_rcvd', sentDate: 'lotw_sent_date', rcvdDate: 'lotw_rcvd_date' },
  { key: 'EQSL',    label: 'eQSL',        sent: 'eqsl_sent', rcvd: 'eqsl_rcvd', sentDate: 'eqsl_sent_date', rcvdDate: 'eqsl_rcvd_date' },
  { key: 'QRZCOM',  label: 'QRZ.com',     sent: 'qrzcom_qso_upload_status' as any, sentDate: 'qrzcom_qso_upload_date' as any, rcvd: 'qrzcom_qso_download_status' as any, rcvdDate: 'qrzcom_qso_download_date' as any },
  { key: 'CLUBLOG', label: 'Club Log',    sent: 'clublog_qso_upload_status' as any, sentDate: 'clublog_qso_upload_date' as any },
  { key: 'HRDLOG',  label: 'HRDLog',      sent: 'hrdlog_qso_upload_status' as any, sentDate: 'hrdlog_qso_upload_date' as any },
];

// Colour-coded status cell for the confirmation grid.
function StatusCell({ value }: { value?: string }) {
  const v = (value || '').toUpperCase();
  // Empty = no value set yet → show a neutral dash, NOT "No" (which is the
  // explicit "N" status). Mirrors the dropdown, which shows "—" for empty.
  if (v === '') {
    return <span className="block text-center text-[11px] text-muted-foreground">—</span>;
  }
  const label = v === 'Y' ? 'Yes' : v === 'R' ? 'Requested' : v === 'I' ? 'Ignore' : v === 'M' ? 'Modified' : 'No';
  const cls = v === 'Y' ? 'bg-emerald-600 text-white'
    : v === 'R' ? 'bg-orange-400 text-white'
    : v === 'I' ? 'bg-stone-400 text-white'
    : 'bg-amber-400 text-amber-950';
  return <span className={cn('block text-center text-[11px] font-semibold rounded px-1 py-0.5', cls)}>{label}</span>;
}

interface Props {
  qso: QSO;
  onSave: (q: QSO) => void;
  onDelete: (id: number) => void;
  onClose: () => void;
  countries?: string[];
}

function toLocalISO(d: any): string {
  if (!d) return '';
  const date = new Date(d);
  if (isNaN(date.getTime())) return '';
  const p = (n: number) => String(n).padStart(2, '0');
  return `${date.getUTCFullYear()}-${p(date.getUTCMonth()+1)}-${p(date.getUTCDate())}T${p(date.getUTCHours())}:${p(date.getUTCMinutes())}`;
}
function parseLocalISO(s: string): string | null {
  if (!s) return null;
  const m = s.match(/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})/);
  if (!m) return null;
  return `${m[1]}-${m[2]}-${m[3]}T${m[4]}:${m[5]}:00.000Z`;
}
function stringifyExtras(e?: Record<string, string>): string {
  if (!e) return '';
  return Object.entries(e).map(([k, v]) => `${k} = ${v}`).join('\n');
}
function parseExtras(t: string): Record<string, string> | undefined {
  const out: Record<string, string> = {};
  for (const raw of t.split('\n')) {
    const line = raw.trim();
    if (!line) continue;
    const idx = line.indexOf('=');
    if (idx < 0) continue;
    const k = line.slice(0, idx).trim().toUpperCase();
    const v = line.slice(idx + 1).trim();
    if (k && v) out[k] = v;
  }
  return Object.keys(out).length ? out : undefined;
}
function numOrUndef(v: any): number | undefined {
  if (v === '' || v === null || v === undefined) return undefined;
  const n = typeof v === 'number' ? v : parseFloat(String(v));
  return isNaN(n) ? undefined : n;
}
function intOrUndef(v: any): number | undefined {
  const n = numOrUndef(v);
  return n === undefined ? undefined : Math.trunc(n);
}

function F({ label, span = 1, children }: { label: string; span?: 1 | 2 | 3 | 6; children: React.ReactNode }) {
  return (
    <div className={cn('flex flex-col gap-1 min-w-0', span === 2 && 'col-span-2', span === 3 && 'col-span-3', span === 6 && 'col-span-6')}>
      <Label>{label}</Label>
      {children}
    </div>
  );
}

function QslSelect({ value, onChange }: { value?: string; onChange: (v: string) => void }) {
  return (
    <Select value={value || '_'} onValueChange={(v) => onChange(v === '_' ? '' : v)}>
      <SelectTrigger><SelectValue /></SelectTrigger>
      <SelectContent>
        {QSL_STATUSES.map((s) => <SelectItem key={s.value} value={s.value}>{s.label}</SelectItem>)}
      </SelectContent>
    </Select>
  );
}

export function QSOEditModal({ qso, onSave, onDelete, onClose, countries = [] }: Props) {
  const [draft, setDraft] = useState<QSO>(() => JSON.parse(JSON.stringify(qso)));
  // Frequencies are edited as kHz + Hz (Log4OM style) and recombined on save.
  const splitHz = (hz?: number) => hz
    ? { khz: String(Math.floor(hz / 1000)), hz: String(hz % 1000).padStart(3, '0') }
    : { khz: '', hz: '' };
  const f0 = splitHz(draft.freq_hz);
  const fr0 = splitHz(draft.freq_rx_hz);
  const [freqKHz, setFreqKHz] = useState(f0.khz);
  const [freqHz, setFreqHz] = useState(f0.hz);
  const [freqRxKHz, setFreqRxKHz] = useState(fr0.khz);
  const [freqRxHz, setFreqRxHz] = useState(fr0.hz);
  const [dateOn, setDateOn] = useState(toLocalISO(draft.qso_date));
  const [dateOff, setDateOff] = useState(toLocalISO(draft.qso_date_off));
  const [endEnabled, setEndEnabled] = useState(!!draft.qso_date_off);
  const [confSel, setConfSel] = useState('QSL'); // selected confirmation channel
  const [extrasText, setExtrasText] = useState(stringifyExtras(draft.extras));
  const [localErr, setLocalErr] = useState('');
  const [saving, setSaving] = useState(false);
  const [looking, setLooking] = useState(false);

  function set<K extends keyof QSO>(key: K, value: QSO[K]) {
    setDraft((d) => ({ ...d, [key]: value }));
  }

  // Country drives the DXCC entity number (ADIF). The DXCC field is read-only;
  // picking a Country resolves and stamps its DXCC# so they can't diverge.
  async function onCountryChange(v: string) {
    set('country', v);
    try {
      const n = await DXCCForCountry(v);
      set('dxcc', (n && n > 0 ? n : undefined) as any);
    } catch { /* leave DXCC as-is if resolution fails */ }
  }

  // Re-run a callsign lookup (QRZ/HamQTH + cty.dat) and merge the result into
  // the draft — handy after correcting the callsign. Only overwrites the
  // lookup-derived fields; leaves call/band/mode/RST/dates alone.
  async function fetchLookup() {
    const call = (draft.callsign ?? '').trim().toUpperCase();
    if (!call) { setLocalErr('Callsign required'); return; }
    setLooking(true);
    setLocalErr('');
    try {
      const r: any = await LookupCallsign(call);
      setDraft((d) => ({
        ...d,
        name: r.name ?? d.name,
        qth: r.qth ?? d.qth,
        address: r.address ?? (d as any).address,
        email: r.email ?? (d as any).email,
        country: r.country ?? d.country,
        grid: r.grid ?? d.grid,
        state: r.state ?? d.state,
        cnty: r.cnty ?? d.cnty,
        cont: r.cont ?? d.cont,
        qsl_via: r.qsl_via ?? d.qsl_via,
        dxcc: r.dxcc || d.dxcc,
        cqz: r.cqz || d.cqz,
        ituz: r.ituz || d.ituz,
        lat: r.lat || d.lat,
        lon: r.lon || d.lon,
      }));
    } catch (e: any) {
      setLocalErr('Lookup: ' + String(e?.message ?? e));
    } finally {
      setLooking(false);
    }
  }

  function save() {
    if (!draft.callsign?.trim()) { setLocalErr('Callsign required'); return; }
    setSaving(true);
    setLocalErr('');
    const out: any = {
      ...draft,
      callsign: draft.callsign.trim().toUpperCase(),
      grid: (draft.grid ?? '').trim().toUpperCase(),
      gridsquare_ext: (draft.gridsquare_ext ?? '').trim().toUpperCase(),
      station_callsign: (draft.station_callsign ?? '').trim().toUpperCase(),
      operator: (draft.operator ?? '').trim().toUpperCase(),
      my_grid: (draft.my_grid ?? '').trim().toUpperCase(),
      my_gridsquare_ext: (draft.my_gridsquare_ext ?? '').trim().toUpperCase(),
      iota: (draft.iota ?? '').trim().toUpperCase(),
      sota_ref: (draft.sota_ref ?? '').trim().toUpperCase(),
      pota_ref: (draft.pota_ref ?? '').trim().toUpperCase(),
      my_iota: (draft.my_iota ?? '').trim().toUpperCase(),
      my_sota_ref: (draft.my_sota_ref ?? '').trim().toUpperCase(),
      my_pota_ref: (draft.my_pota_ref ?? '').trim().toUpperCase(),
      qso_date:     parseLocalISO(dateOn) ?? new Date().toISOString(),
      qso_date_off: endEnabled ? (parseLocalISO(dateOff) ?? undefined) : undefined,
      freq_hz:    freqKHz.trim()   ? parseInt(freqKHz, 10) * 1000   + (parseInt(freqHz, 10) || 0)   : undefined,
      freq_rx_hz: freqRxKHz.trim() ? parseInt(freqRxKHz, 10) * 1000 + (parseInt(freqRxHz, 10) || 0) : undefined,
      dxcc:       intOrUndef(draft.dxcc),
      cqz:        intOrUndef(draft.cqz),
      ituz:       intOrUndef(draft.ituz),
      age:        intOrUndef(draft.age),
      srx:        intOrUndef(draft.srx),
      stx:        intOrUndef(draft.stx),
      my_dxcc:    intOrUndef(draft.my_dxcc),
      my_cq_zone: intOrUndef(draft.my_cq_zone),
      my_itu_zone: intOrUndef(draft.my_itu_zone),
      lat: numOrUndef(draft.lat),    lon: numOrUndef(draft.lon),
      my_lat: numOrUndef(draft.my_lat), my_lon: numOrUndef(draft.my_lon),
      ant_az: numOrUndef(draft.ant_az), ant_el: numOrUndef(draft.ant_el),
      tx_pwr: numOrUndef(draft.tx_pwr),
      extras: parseExtras(extrasText),
    };
    onSave(out);
  }

  useEffect(() => {
    function onKey(e: KeyboardEvent) {
      if (e.key === 'Enter' && (e.ctrlKey || e.metaKey)) save();
    }
    window.addEventListener('keydown', onKey);
    return () => window.removeEventListener('keydown', onKey);
    // eslint-disable-next-line react-hooks/exhaustive-deps
  });

  const extrasCount = useMemo(
    () => (draft.extras ? Object.keys(draft.extras).length : 0),
    [draft.extras],
  );

  return (
    <Dialog open onOpenChange={(o) => { if (!o) onClose(); }}>
      <DialogContent className="max-w-4xl max-h-[92vh] grid grid-rows-[auto_1fr_auto] gap-0 p-0">
        <DialogHeader className="flex-row items-baseline gap-2">
          <DialogTitle>Edit QSO</DialogTitle>
          <span className="font-mono text-xs text-muted-foreground">#{draft.id} — {draft.callsign}</span>
          <DialogDescription className="sr-only">Edit fields for QSO #{draft.id}</DialogDescription>
        </DialogHeader>

        <Tabs defaultValue="qsoinfo" className="flex flex-col overflow-hidden min-h-0">
          <TabsList className="px-3 overflow-x-auto">
            <TabsTrigger value="qsoinfo">QSO Info</TabsTrigger>
            <TabsTrigger value="contact">Contact's details</TabsTrigger>
            <TabsTrigger value="qsl">QSL Info</TabsTrigger>
            <TabsTrigger value="contest">Contest</TabsTrigger>
            <TabsTrigger value="sat">Sat / Prop</TabsTrigger>
            <TabsTrigger value="mystation">My Station</TabsTrigger>
            <TabsTrigger value="extras">
              Extras
              {extrasCount > 0 && (
                <Badge variant="accent" className="ml-1 px-1.5 py-0 text-[9px]">{extrasCount}</Badge>
              )}
            </TabsTrigger>
          </TabsList>

          {localErr && (
            <div className="mx-5 mt-3 text-xs text-destructive bg-destructive/10 border border-destructive/30 rounded-md px-3 py-2">
              {localErr}
            </div>
          )}

          <div className="overflow-y-auto px-5 py-4 flex-1">
            <TabsContent value="qsoinfo" className="mt-0">
              {/* Top: Callsign + RST + Fetch */}
              <div className="flex items-end gap-2 mb-3">
                <div className="flex flex-col flex-1 min-w-0">
                  <Label>Callsign</Label>
                  <Input className="font-mono text-lg font-bold tracking-wider uppercase h-10"
                    value={draft.callsign ?? ''} onChange={(e) => set('callsign', e.target.value)} />
                </div>
                <div className="flex flex-col w-20"><Label>S</Label>
                  <Input value={draft.rst_sent ?? ''} onChange={(e) => set('rst_sent', e.target.value)} className="font-mono" /></div>
                <div className="flex flex-col w-20"><Label>R</Label>
                  <Input value={draft.rst_rcvd ?? ''} onChange={(e) => set('rst_rcvd', e.target.value)} className="font-mono" /></div>
                <Button type="button" variant="outline" className="h-10" onClick={fetchLookup} disabled={looking}
                  title="Look up this callsign (QRZ.com / HamQTH) and refresh name, country, grid, zones…">
                  {looking ? <Loader2 className="size-4 animate-spin" /> : <Search className="size-4" />} Fetch
                </Button>
              </div>

              <div className="grid grid-cols-2 gap-x-6 gap-y-2.5">
                {/* ── Left column ── */}
                <div className="flex flex-col gap-2.5">
                  <div><Label>Name</Label><Input value={draft.name ?? ''} onChange={(e) => set('name', e.target.value)} /></div>
                  <div className="flex items-center gap-2">
                    <Label className="w-20 shrink-0">Band</Label>
                    <Select value={draft.band || ''} onValueChange={(v) => set('band', v)}>
                      <SelectTrigger className="h-8 flex-1"><SelectValue /></SelectTrigger>
                      <SelectContent>{BANDS.map((b) => <SelectItem key={b} value={b}>{b}</SelectItem>)}</SelectContent>
                    </Select>
                  </div>
                  <div className="flex items-center gap-2">
                    <Label className="w-20 shrink-0">RX Band</Label>
                    <Select value={draft.band_rx || '_'} onValueChange={(v) => set('band_rx', v === '_' ? '' : v)}>
                      <SelectTrigger className="h-8 flex-1"><SelectValue /></SelectTrigger>
                      <SelectContent><SelectItem value="_">—</SelectItem>{BANDS.map((b) => <SelectItem key={b} value={b}>{b}</SelectItem>)}</SelectContent>
                    </Select>
                  </div>
                  <div className="flex items-center gap-2">
                    <Label className="w-20 shrink-0">Mode</Label>
                    <Select value={draft.mode || ''} onValueChange={(v) => set('mode', v)}>
                      <SelectTrigger className="h-8 flex-1"><SelectValue /></SelectTrigger>
                      <SelectContent>{MODES.map((m) => <SelectItem key={m} value={m}>{m}</SelectItem>)}</SelectContent>
                    </Select>
                  </div>
                  <div className="flex items-center gap-2">
                    <Label className="w-20 shrink-0">Country</Label>
                    <Combobox value={draft.country ?? ''} options={countries} placeholder="Country"
                      onChange={onCountryChange} className="flex-1" />
                  </div>
                  <div className="flex items-center gap-2">
                    <Label className="w-20 shrink-0">ITU</Label>
                    <Input type="number" value={draft.ituz ?? ''} onChange={(e) => set('ituz', intOrUndef(e.target.value) as any)} className="font-mono w-16 text-center" />
                    <Label>CQ</Label>
                    <Input type="number" value={draft.cqz ?? ''} onChange={(e) => set('cqz', intOrUndef(e.target.value) as any)} className="font-mono w-16 text-center" />
                    <Input type="number" value={draft.dxcc ?? ''} readOnly tabIndex={-1} className="font-mono w-16 text-center bg-muted/60 text-muted-foreground cursor-not-allowed" title="DXCC entity # — set automatically from Country" />
                    {flagURL(draft.dxcc) && <img src={flagURL(draft.dxcc)} alt="" className="h-4 rounded-[2px] border border-border/50" referrerPolicy="no-referrer" />}
                  </div>
                  <div className="flex items-center gap-2">
                    <Label className="w-20 shrink-0">Freq</Label>
                    <Input value={freqKHz} onChange={(e) => setFreqKHz(e.target.value.replace(/\D/g, ''))} className="font-mono w-24" placeholder="kHz" />
                    <Input value={freqHz} onChange={(e) => setFreqHz(e.target.value.replace(/\D/g, ''))} maxLength={3} className="font-mono w-16" placeholder="Hz" />
                  </div>
                  <div className="flex items-center gap-2">
                    <Label className="w-20 shrink-0">RX Freq</Label>
                    <Input value={freqRxKHz} onChange={(e) => setFreqRxKHz(e.target.value.replace(/\D/g, ''))} className="font-mono w-24" placeholder="kHz" />
                    <Input value={freqRxHz} onChange={(e) => setFreqRxHz(e.target.value.replace(/\D/g, ''))} maxLength={3} className="font-mono w-16" placeholder="Hz" />
                  </div>
                </div>

                {/* ── Right column ── */}
                <div className="flex flex-col gap-2.5">
                  <div><Label>QSO Start (UTC)</Label><Input type="datetime-local" value={dateOn} onChange={(e) => setDateOn(e.target.value)} /></div>
                  <div>
                    <Label className="flex items-center gap-2">
                      <Checkbox checked={endEnabled} onCheckedChange={(c) => setEndEnabled(!!c)} /> QSO End (UTC)
                    </Label>
                    <Input type="datetime-local" value={dateOff} disabled={!endEnabled} onChange={(e) => setDateOff(e.target.value)} />
                  </div>
                  <div className="flex items-end gap-2">
                    <div className="flex flex-col flex-1"><Label>Grid</Label><Input value={draft.grid ?? ''} onChange={(e) => set('grid', e.target.value)} className="font-mono uppercase" /></div>
                    <div className="flex flex-col w-24"><Label>PFX</Label><Input readOnly value={pfxOf(draft.callsign ?? '')} className="font-mono bg-muted/40" /></div>
                  </div>
                  <div><Label>Comment</Label><Input value={draft.comment ?? ''} onChange={(e) => set('comment', e.target.value)} /></div>
                  <div><Label>Note</Label><Textarea rows={3} value={draft.notes ?? ''} onChange={(e) => set('notes', e.target.value)} /></div>
                </div>
              </div>
            </TabsContent>

            <TabsContent value="contact" className="mt-0">
              <div className="grid grid-cols-2 gap-x-6 gap-y-2.5">
                {/* Left column */}
                <div className="flex flex-col gap-2.5">
                  <div><Label>County</Label><Input value={draft.cnty ?? ''} onChange={(e) => set('cnty', e.target.value)} /></div>
                  <div><Label>State</Label><Input value={draft.state ?? ''} onChange={(e) => set('state', e.target.value)} /></div>
                  <div><Label>QTH</Label><Input value={draft.qth ?? ''} onChange={(e) => set('qth', e.target.value)} /></div>
                  <div><Label>Address</Label><Textarea rows={4} value={draft.address ?? ''} onChange={(e) => set('address', e.target.value)} /></div>
                </div>
                {/* Right column */}
                <div className="flex flex-col gap-2.5">
                  <div><Label>E-mail address</Label><Input value={(draft as any).email ?? ''} onChange={(e) => (set as any)('email', e.target.value)} /></div>
                  <div className="flex items-end gap-2">
                    <div className="flex flex-col flex-1"><Label>Lat</Label><Input type="number" step="0.000001" value={draft.lat ?? ''} onChange={(e) => set('lat', numOrUndef(e.target.value) as any)} className="font-mono" /></div>
                    <div className="flex flex-col flex-1"><Label>Lon</Label><Input type="number" step="0.000001" value={draft.lon ?? ''} onChange={(e) => set('lon', numOrUndef(e.target.value) as any)} className="font-mono" /></div>
                  </div>
                  <div><Label>QSL Msg</Label><Input value={draft.qsl_msg ?? ''} onChange={(e) => set('qsl_msg', e.target.value)} /></div>
                  <div><Label>QSL Via</Label><Input value={draft.qsl_via ?? ''} onChange={(e) => set('qsl_via', e.target.value)} /></div>
                </div>
              </div>
            </TabsContent>

            <TabsContent value="qsl" className="mt-0">
              {(() => {
                const def = CONFIRMATIONS.find((c) => c.key === confSel) ?? CONFIRMATIONS[0];
                const val = (k?: keyof QSOForm) => (k ? ((draft as any)[k] ?? '') : '');
                const put = (k: keyof QSOForm | undefined, v: any) => { if (k) (set as any)(k, v); };
                return (
                  <div className="flex gap-6">
                    {/* Left: edit one confirmation channel at a time */}
                    <div className="flex-1 max-w-sm space-y-3">
                      <div>
                        <Label>Manage Confirmation</Label>
                        <Select value={confSel} onValueChange={setConfSel}>
                          <SelectTrigger><SelectValue /></SelectTrigger>
                          <SelectContent>{CONFIRMATIONS.map((c) => <SelectItem key={c.key} value={c.key}>{c.label}</SelectItem>)}</SelectContent>
                        </Select>
                      </div>
                      <div className="grid grid-cols-2 gap-3">
                        <div><Label>Sent</Label><QslSelect value={val(def.sent)} onChange={(v) => put(def.sent, v)} /></div>
                        <div><Label>Received</Label>
                          {def.rcvd
                            ? <QslSelect value={val(def.rcvd)} onChange={(v) => put(def.rcvd, v)} />
                            : <Input disabled value="—" />}
                        </div>
                        <div><Label>Date sent</Label><Input value={val(def.sentDate)} placeholder="YYYYMMDD" onChange={(e) => put(def.sentDate, e.target.value)} className="font-mono" /></div>
                        <div><Label>Date received</Label><Input value={val(def.rcvdDate)} placeholder="YYYYMMDD" disabled={!def.rcvdDate} onChange={(e) => put(def.rcvdDate, e.target.value)} className="font-mono" /></div>
                        {def.via && (
                          <div className="col-span-2"><Label>Via</Label><Input value={val(def.via)} onChange={(e) => put(def.via, e.target.value)} placeholder="BUREAU / DIRECT / manager…" /></div>
                        )}
                      </div>
                      <p className="text-[11px] text-muted-foreground">
                        Pick a channel, edit it — the table on the right updates live. Everything is written when you click <strong>Save changes</strong>.
                      </p>
                    </div>

                    {/* Right: live status grid for every channel */}
                    <div className="w-72 shrink-0">
                      <table className="w-full border-separate" style={{ borderSpacing: 4 }}>
                        <thead>
                          <tr className="text-[10px] uppercase tracking-wider text-muted-foreground">
                            <th className="text-left font-semibold">Type</th>
                            <th className="font-semibold">Sent</th>
                            <th className="font-semibold">Received</th>
                          </tr>
                        </thead>
                        <tbody>
                          {CONFIRMATIONS.map((c) => (
                            <tr key={c.key} className={cn('text-xs', c.key === confSel && 'bg-accent/40')}>
                              <td className="font-medium pr-2 py-0.5">{c.label}</td>
                              <td className="w-24"><StatusCell value={val(c.sent)} /></td>
                              <td className="w-24">{c.rcvd ? <StatusCell value={val(c.rcvd)} /> : <span className="block text-center text-[11px] text-muted-foreground">—</span>}</td>
                            </tr>
                          ))}
                        </tbody>
                      </table>
                    </div>
                  </div>
                );
              })()}
            </TabsContent>

            <TabsContent value="contest" className="mt-0">
              <div className="grid grid-cols-6 gap-3">
                <F label="Contest ID" span={2}><Input value={draft.contest_id ?? ''} onChange={(e) => set('contest_id', e.target.value)} /></F>
                <F label="SRX"><Input type="number" value={draft.srx ?? ''} onChange={(e) => set('srx', intOrUndef(e.target.value) as any)} /></F>
                <F label="STX"><Input type="number" value={draft.stx ?? ''} onChange={(e) => set('stx', intOrUndef(e.target.value) as any)} /></F>
                <F label="SRX string" span={3}><Input value={draft.srx_string ?? ''} onChange={(e) => set('srx_string', e.target.value)} /></F>
                <F label="STX string" span={3}><Input value={draft.stx_string ?? ''} onChange={(e) => set('stx_string', e.target.value)} /></F>
                <F label="Check"><Input value={draft.check ?? ''} onChange={(e) => set('check', e.target.value)} /></F>
                <F label="Precedence"><Input value={draft.precedence ?? ''} onChange={(e) => set('precedence', e.target.value)} /></F>
                <F label="ARRL section"><Input value={draft.arrl_sect ?? ''} onChange={(e) => set('arrl_sect', e.target.value)} /></F>
              </div>
            </TabsContent>

            <TabsContent value="sat" className="mt-0">
              <div className="grid grid-cols-6 gap-3">
                <F label="Propagation mode">
                  <Select value={draft.prop_mode || '_'} onValueChange={(v) => set('prop_mode', v === '_' ? '' : v)}>
                    <SelectTrigger><SelectValue /></SelectTrigger>
                    <SelectContent>{PROP_MODES.map((p) => <SelectItem key={p} value={p}>{p === '_' ? '—' : p}</SelectItem>)}</SelectContent>
                  </Select>
                </F>
                <F label="Satellite name"><Input value={draft.sat_name ?? ''} placeholder="AO-91" onChange={(e) => set('sat_name', e.target.value)} /></F>
                <F label="Satellite mode"><Input value={draft.sat_mode ?? ''} placeholder="U/V" onChange={(e) => set('sat_mode', e.target.value)} /></F>
                <F label="Antenna AZ (°)"><Input type="number" value={draft.ant_az ?? ''} onChange={(e) => set('ant_az', numOrUndef(e.target.value) as any)} /></F>
                <F label="Antenna EL (°)"><Input type="number" value={draft.ant_el ?? ''} onChange={(e) => set('ant_el', numOrUndef(e.target.value) as any)} /></F>
                <F label="Antenna path"><Input value={draft.ant_path ?? ''} placeholder="S, L, G" onChange={(e) => set('ant_path', e.target.value)} /></F>
              </div>
            </TabsContent>

            <TabsContent value="mystation" className="mt-0 space-y-3">
              <p className="text-xs text-muted-foreground">These override the active station profile for this QSO only.</p>
              <div className="grid grid-cols-6 gap-3">
                <F label="Station callsign" span={3}><Input value={draft.station_callsign ?? ''} onChange={(e) => set('station_callsign', e.target.value)} /></F>
                <F label="Operator" span={3}><Input value={draft.operator ?? ''} onChange={(e) => set('operator', e.target.value)} /></F>
                <F label="My grid"><Input value={draft.my_grid ?? ''} onChange={(e) => set('my_grid', e.target.value)} /></F>
                <F label="Grid ext"><Input value={draft.my_gridsquare_ext ?? ''} onChange={(e) => set('my_gridsquare_ext', e.target.value)} /></F>
                <F label="Country" span={2}><Combobox value={draft.my_country ?? ''} options={countries} placeholder="Country" onChange={(v) => set('my_country', v)} /></F>
                <F label="State"><Input value={draft.my_state ?? ''} onChange={(e) => set('my_state', e.target.value)} /></F>
                <F label="County"><Input value={draft.my_cnty ?? ''} onChange={(e) => set('my_cnty', e.target.value)} /></F>
                <F label="DXCC"><Input type="number" value={draft.my_dxcc ?? ''} onChange={(e) => set('my_dxcc', intOrUndef(e.target.value) as any)} /></F>
                <F label="CQ zone"><Input type="number" value={draft.my_cq_zone ?? ''} onChange={(e) => set('my_cq_zone', intOrUndef(e.target.value) as any)} /></F>
                <F label="ITU zone"><Input type="number" value={draft.my_itu_zone ?? ''} onChange={(e) => set('my_itu_zone', intOrUndef(e.target.value) as any)} /></F>
                <F label="IOTA"><Input value={draft.my_iota ?? ''} onChange={(e) => set('my_iota', e.target.value)} /></F>
                <F label="SOTA ref"><Input value={draft.my_sota_ref ?? ''} onChange={(e) => set('my_sota_ref', e.target.value)} /></F>
                <F label="POTA ref"><Input value={draft.my_pota_ref ?? ''} onChange={(e) => set('my_pota_ref', e.target.value)} /></F>
                <F label="Lat"><Input type="number" step="0.000001" value={draft.my_lat ?? ''} onChange={(e) => set('my_lat', numOrUndef(e.target.value) as any)} /></F>
                <F label="Lon"><Input type="number" step="0.000001" value={draft.my_lon ?? ''} onChange={(e) => set('my_lon', numOrUndef(e.target.value) as any)} /></F>
                <F label="Street" span={2}><Input value={draft.my_street ?? ''} onChange={(e) => set('my_street', e.target.value)} /></F>
                <F label="City" span={2}><Input value={draft.my_city ?? ''} onChange={(e) => set('my_city', e.target.value)} /></F>
                <F label="Postal" span={2}><Input value={draft.my_postal_code ?? ''} onChange={(e) => set('my_postal_code', e.target.value)} /></F>
                <F label="Rig" span={3}><Input value={draft.my_rig ?? ''} onChange={(e) => set('my_rig', e.target.value)} /></F>
                <F label="Antenna" span={3}><Input value={draft.my_antenna ?? ''} onChange={(e) => set('my_antenna', e.target.value)} /></F>
              </div>
            </TabsContent>

            <TabsContent value="extras" className="mt-0 space-y-2">
              <p className="text-xs text-muted-foreground">
                ADIF fields not promoted to first-class columns. One per line:{' '}
                <code className="bg-muted px-1 py-0.5 rounded font-mono">FIELD_NAME = value</code>
              </p>
              <Textarea rows={14} className="font-mono text-xs" value={extrasText} onChange={(e) => setExtrasText(e.target.value)} />
            </TabsContent>
          </div>
        </Tabs>

        <DialogFooter className="!flex-row gap-2">
          <Button variant="outline" className="text-destructive hover:bg-destructive/10 hover:text-destructive" onClick={() => onDelete(draft.id)} disabled={saving}>
            <Trash2 className="size-3.5" /> Delete
          </Button>
          <div className="flex-1" />
          <Button variant="outline" onClick={onClose} disabled={saving}>Cancel</Button>
          <Button onClick={save} disabled={saving}>{saving ? 'Saving…' : 'Save changes'}</Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}