// src/services/renderers/dectStatusRenderer.js
//
// Full CLI-style DECT base dump for `/dectstatus`. Complements the
// compact follow-up from renderDectDiagnosticsMarkdown (phonestatus):
// that one is "exceptions only"; this one is the complete status.xml
// picture (device, firmware, reboot log, network, RTP, security,
// emergency numbers, health verdict).
//
// Input is the same collectAll() result array used by the compact
// renderer. Pure — no I/O, no env.

import { formatDisplayTime } from '../../utils/time.js';

/**
 * @param {Array} results   collectAll() output
 * @param {object} opts
 * @param {string} opts.storeNum
 * @param {boolean} [opts.footer=true]
 * @param {object}  [opts.relay]   optional hub.status() snapshot
 * @param {Array}   [opts.discoveryWarnings]
 * @returns {string}
 */
export function renderDectStatusMarkdown(results, opts = {}) {
  const {
    storeNum,
    footer = true,
    relay = null,
    discoveryWarnings = [],
  } = opts;
  const list = Array.isArray(results) ? results : [];

  const lines = [`**DECT Status — Store ${storeNum}**`, ''];

  if (relay) {
    if (relay.connected) {
      const agent = relay.agent?.hostname || relay.agent?.version || 'connected';
      lines.push(`_Relay: online (${agent})_`);
    } else {
      lines.push('_Relay: **offline** — base collect will fail until dect-relay-agent reconnects_');
    }
    lines.push('');
  }

  if (list.length === 0) {
    lines.push('_No reachable DECT basestations discovered for this store._');
    if (discoveryWarnings.length > 0) {
      lines.push('');
      lines.push('**Discovery notes:**');
      for (const w of discoveryWarnings) {
        const who = w.mac || w.ip || 'base';
        lines.push(`- ${who}: ${w.reason}`);
      }
    }
    if (footer) {
      lines.push('');
      lines.push(`_Pulled at ${formatDisplayTime()}._`);
    }
    return lines.join('\n').trim();
  }

  for (let i = 0; i < list.length; i++) {
    if (i > 0) lines.push('', '---', '');
    lines.push(...renderOneBaseFull(list[i]));
  }

  if (discoveryWarnings.length > 0) {
    lines.push('', '**Discovery notes (skipped bases):**');
    for (const w of discoveryWarnings) {
      const who = w.mac || w.ip || 'base';
      lines.push(`- ${who}: ${w.reason}`);
    }
  }

  if (footer) {
    lines.push('');
    lines.push(
      `_Full base dump at ${formatDisplayTime()} via the DECT relay. ` +
      `Use the action cards below for reboot / factory-reset (chat only)._`,
    );
  }

  return lines.join('\n').trim();
}

function renderOneBaseFull(r) {
  const label = r.base?.name || `Basestation ${r.base?.mac || '?'}`;
  const ip = r.base?.ip || '?';
  const mac = r.base?.mac || '?';
  const lines = [];

  if (!r.ok) {
    lines.push(`⚠️ **${label}**`);
    lines.push(`- IP: \`${ip}\` · MAC: \`${mac}\``);
    lines.push(`- Collect failed: ${r.error?.message || 'unknown error'}`);
    if (r.error?.hint) lines.push(`- _${r.error.hint}_`);
    if (r.elapsedMs != null) lines.push(`- Elapsed: ${r.elapsedMs}ms`);
    return lines;
  }

  const p = r.data || {};
  const verdict = r.verdict || {};
  const icon = verdict.healthy ? '✅' : '⚠️';
  lines.push(`${icon} **${label}**`);

  // ── Device ──
  lines.push('', '**Device**');
  row(lines, 'Model', p.device?.model);
  row(lines, 'System type', p.device?.systemType);
  row(lines, 'Unit', [p.device?.unitName, p.device?.unitIndex].filter(Boolean).join(' · ') || null);
  row(lines, 'MAC', p.device?.macAddress || mac);
  row(lines, 'IP', p.device?.ipAddress || ip);
  row(lines, 'RFPI', p.device?.rfpiAddress);
  row(lines, 'RF band', p.device?.rfBand);
  row(lines, 'Multi-cell', p.multiCell?.role || p.multiCell?.raw);
  row(lines, 'Base status', p.baseStatus);
  row(lines, 'Conflict', p.conflictInfo);

  // ── Firmware ──
  lines.push('', '**Firmware**');
  row(lines, 'Version', p.firmware?.version);
  row(lines, 'Update server', p.firmware?.updateServer);
  row(lines, 'Update path', p.firmware?.updatePath);

  // ── Time ──
  lines.push('', '**Time / uptime**');
  row(lines, 'Local time', p.time?.currentLocalTime);
  row(lines, 'Uptime', p.time?.operatingTime);
  if (r.elapsedMs != null) row(lines, 'Collect latency', `${r.elapsedMs}ms`);

  // ── Reboot log ──
  lines.push('', '**Reboot log** (newest first)');
  const log = Array.isArray(p.rebootLog) ? p.rebootLog : [];
  if (log.length === 0) {
    lines.push('- _(none)_');
  } else {
    for (const entry of log) {
      if (entry.unrecognized) {
        lines.push(`- ??? ${entry.raw || ''}`);
        continue;
      }
      const tag = entry.reasonCode === 80 ? '⚡' : '•';
      lines.push(
        `- ${tag} #${entry.sequence}  ${entry.at}  **${entry.reasonName}** (${entry.reasonCode})  fw=${entry.firmwareAtBoot || '?'}`,
      );
    }
  }

  // ── Network ──
  lines.push('', '**Network stats** (since boot)');
  row(lines, 'Tx packets', p.network?.txPackets);
  row(lines, 'Tx dropped', p.network?.txDropped);
  row(lines, 'Tx errors', p.network?.txErrors);
  row(lines, 'Rx packets', p.network?.rxPackets);
  row(lines, 'Rx dropped', p.network?.rxDropped);
  row(lines, 'Rx errors', p.network?.rxErrors);
  row(lines, 'Rx broadcasts', p.network?.rxBroadcasts);

  // ── RTP ──
  lines.push('', '**RTP**');
  row(lines, 'Total since boot', p.rtp?.total);
  row(lines, 'Current active', p.rtp?.current);
  row(lines, 'Current local', p.rtp?.currentLocal);
  row(lines, 'Current relay', p.rtp?.currentRelay);

  // ── Security ──
  lines.push('', '**Security**');
  row(
    lines,
    'Custom CA',
    p.security?.customCa?.installed
      ? (p.security.customCa.info || 'installed')
      : 'Not installed',
  );
  row(lines, '802.1X protocol', p.security?.dot1x?.protocol);
  row(lines, '802.1X status', p.security?.dot1x?.transactionStatus);

  // ── Emergency ──
  const emerg = Array.isArray(p.emergencyNumbers) ? p.emergencyNumbers : [];
  lines.push('', '**Emergency numbers**');
  lines.push(emerg.length ? `- ${emerg.join(', ')}` : '- _(none configured)_');

  // ── Verdict ──
  lines.push('', '**Health verdict**');
  lines.push(`- healthy: **${verdict.healthy ? 'YES' : 'NO'}**`);
  for (const w of verdict.warnings || []) {
    lines.push(`- ⚠️ ${w}`);
  }
  for (const i of verdict.info || []) {
    lines.push(`- ℹ️ ${i}`);
  }

  return lines;
}

function row(lines, label, value) {
  if (value == null || value === '') return;
  lines.push(`- **${label}:** ${value}`);
}