package webui

import (
	"fmt"
	"html"
	"net/url"
	"os"
	"path/filepath"
	"sort"
	"strings"
)

func renderExport(exportDir string) string {
	entries, _ := listExportFiles(exportDir)
	var rows strings.Builder
	for _, e := range entries {
		rows.WriteString(fmt.Sprintf(`<tr><td><a href="/export/file?path=%s" target="_blank">%s</a></td></tr>`,
			url.QueryEscape(e), html.EscapeString(e)))
	}
	if len(entries) == 0 {
		rows.WriteString(`<tr><td style="color:var(--muted)">No export files found.</td></tr>`)
	}
	return `<div class="grid2">
<div class="card"><div class="card-head">Support Bundle</div><div class="card-body">
<p style="font-size:13px;color:var(--muted);margin-bottom:12px">Creates a tar.gz archive of all audit files, SAT results, and logs.</p>
` + renderSupportBundleInline() + `
</div></div>
<div class="card"><div class="card-head">Export Files</div><div class="card-body">
<table><tr><th>File</th></tr>` + rows.String() + `</table>
</div></div>
</div>

` + renderUSBExportCard()
}

func listExportFiles(exportDir string) ([]string, error) {
	var entries []string
	err := filepath.Walk(strings.TrimSpace(exportDir), func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}
		if info.IsDir() {
			return nil
		}
		rel, err := filepath.Rel(exportDir, path)
		if err != nil {
			return err
		}
		entries = append(entries, rel)
		return nil
	})
	if err != nil && !os.IsNotExist(err) {
		return nil, err
	}
	sort.Strings(entries)
	return entries, nil
}

func renderSupportBundleInline() string {
	return `<button id="support-bundle-btn" class="btn btn-primary" onclick="supportBundleDownload()">&#8595; Download Support Bundle</button>
<div id="support-bundle-status" style="margin-top:10px;font-size:13px;color:var(--muted)"></div>
<script>
window.supportBundleDownload = function() {
  var btn = document.getElementById('support-bundle-btn');
  var status = document.getElementById('support-bundle-status');
  btn.disabled = true;
  btn.textContent = 'Building...';
  status.textContent = 'Collecting logs and export data\u2026';
  status.style.color = 'var(--muted)';
  var filename = 'bee-support.tar.gz';
  fetch('/export/support.tar.gz')
    .then(function(r) {
      if (!r.ok) throw new Error('HTTP ' + r.status);
      var cd = r.headers.get('Content-Disposition') || '';
      var m = cd.match(/filename="?([^";]+)"?/);
      if (m) filename = m[1];
      return r.blob();
    })
    .then(function(blob) {
      var url = URL.createObjectURL(blob);
      var a = document.createElement('a');
      a.href = url;
      a.download = filename;
      document.body.appendChild(a);
      a.click();
      document.body.removeChild(a);
      URL.revokeObjectURL(url);
      status.textContent = 'Download started.';
      status.style.color = 'var(--ok-fg)';
    })
    .catch(function(e) {
      status.textContent = 'Error: ' + e.message;
      status.style.color = 'var(--crit-fg)';
    })
    .finally(function() {
      btn.disabled = false;
      btn.textContent = '\u2195 Download Support Bundle';
    });
};
</script>`
}

func renderUSBExportCard() string {
	return `<div class="card" style="margin-top:16px">
  <div class="card-head">Export to USB
    <button class="btn btn-sm btn-secondary" onclick="usbRefresh()" style="margin-left:auto">&#8635; Refresh</button>
  </div>
  <div class="card-body">` + renderUSBExportInline() + `</div>
</div>`
}

func renderUSBExportInline() string {
	return `<p style="font-size:13px;color:var(--muted);margin-bottom:12px">Write audit JSON or support bundle directly to a removable USB drive.</p>
<div id="usb-status" style="font-size:13px;color:var(--muted)">Scanning for USB devices...</div>
<div id="usb-targets" style="margin-top:12px"></div>
<div id="usb-msg" style="margin-top:10px;font-size:13px"></div>
<script>
(function(){
function usbRefresh() {
  document.getElementById('usb-status').textContent = 'Scanning...';
  document.getElementById('usb-targets').innerHTML = '';
  document.getElementById('usb-msg').textContent = '';
  fetch('/api/export/usb').then(r=>r.json()).then(targets => {
    window._usbTargets = Array.isArray(targets) ? targets : [];
    const st = document.getElementById('usb-status');
    const ct = document.getElementById('usb-targets');
    if (!targets || targets.length === 0) {
      st.textContent = 'No removable USB devices found.';
      return;
    }
    st.textContent = targets.length + ' device(s) found:';
    ct.innerHTML = '<table><tr><th>Device</th><th>FS</th><th>Size</th><th>Label</th><th>Model</th><th>Actions</th></tr>' +
      targets.map((t, idx) => {
        const dev = t.device || '';
        const label = t.label || '';
        const model = t.model || '';
        return '<tr>' +
          '<td style="font-family:monospace">'+dev+'</td>' +
          '<td>'+t.fs_type+'</td>' +
          '<td>'+t.size+'</td>' +
          '<td>'+label+'</td>' +
          '<td style="font-size:12px;color:var(--muted)">'+model+'</td>' +
          '<td style="white-space:nowrap">' +
            '<button class="btn btn-sm btn-primary" onclick="usbExport(\'audit\','+idx+',this)">Audit JSON</button> ' +
            '<button class="btn btn-sm btn-secondary" onclick="usbExport(\'bundle\','+idx+',this)">Support Bundle</button>' +
            '<div class="usb-row-msg" style="margin-top:6px;font-size:12px;color:var(--muted)"></div>' +
          '</td></tr>';
      }).join('') + '</table>';
  }).catch(e => {
    document.getElementById('usb-status').textContent = 'Error: ' + e;
  });
}
window.usbExport = function(type, targetIndex, btn) {
  const target = (window._usbTargets || [])[targetIndex];
  if (!target) {
    const msg = document.getElementById('usb-msg');
    msg.style.color = 'var(--err,red)';
    msg.textContent = 'Error: USB target not found. Refresh and try again.';
    return;
  }
  const msg = document.getElementById('usb-msg');
  const row = btn ? btn.closest('td') : null;
  const rowMsg = row ? row.querySelector('.usb-row-msg') : null;
  const originalText = btn ? btn.textContent : '';
  if (btn) {
    btn.disabled = true;
    btn.textContent = 'Exporting...';
  }
  if (rowMsg) {
    rowMsg.style.color = 'var(--muted)';
    rowMsg.textContent = 'Working...';
  }
  msg.style.color = 'var(--muted)';
  msg.textContent = 'Exporting ' + (type === 'bundle' ? 'support bundle' : 'audit JSON') + ' to ' + (target.device||'') + '...';
  fetch('/api/export/usb/'+type, {
    method: 'POST',
    headers: {'Content-Type':'application/json'},
    body: JSON.stringify(target)
  }).then(async r => {
    const d = await r.json();
    if (!r.ok) throw new Error(d.error || ('HTTP ' + r.status));
    return d;
  }).then(d => {
    msg.style.color = 'var(--ok,green)';
    msg.textContent = d.message || 'Done.';
    if (rowMsg) {
      rowMsg.style.color = 'var(--ok,green)';
      rowMsg.textContent = d.message || 'Done.';
    }
  }).catch(e => {
    msg.style.color = 'var(--err,red)';
    msg.textContent = 'Error: '+e;
    if (rowMsg) {
      rowMsg.style.color = 'var(--err,red)';
      rowMsg.textContent = 'Error: ' + e;
    }
  }).finally(() => {
    if (btn) {
      btn.disabled = false;
      btn.textContent = originalText;
    }
  });
};
window.usbRefresh = usbRefresh;
usbRefresh();
})();
</script>`
}

func renderNvidiaSelfHealInline() string {
	return `<p style="font-size:13px;color:var(--muted);margin-bottom:12px">Inspect NVIDIA GPU health, restart the bee-nvidia driver service, and issue a per-GPU reset when the driver reports reset required.</p>
<div style="display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px">
  <button id="nvidia-restart-btn" class="btn btn-secondary" onclick="nvidiaRestartDrivers()">Restart GPU Drivers</button>
  <button class="btn btn-sm btn-secondary" onclick="loadNvidiaSelfHeal()">&#8635; Refresh</button>
</div>
<div id="nvidia-self-heal-status" style="font-size:13px;color:var(--muted);margin-bottom:12px">Loading NVIDIA GPU status...</div>
<div id="nvidia-self-heal-table"><p style="color:var(--muted);font-size:13px">Loading...</p></div>
<div id="nvidia-self-heal-out" style="display:none;margin-top:12px">
  <div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:4px">
    <span id="nvidia-self-heal-out-label" style="font-size:12px;font-weight:600;color:var(--muted)">Output</span>
    <span id="nvidia-self-heal-out-status" style="font-size:12px"></span>
  </div>
  <div id="nvidia-self-heal-terminal" class="terminal" style="max-height:220px;width:100%;box-sizing:border-box"></div>
</div>
<script>
function nvidiaSelfHealShowResult(label, status, output) {
  var out = document.getElementById('nvidia-self-heal-out');
  var term = document.getElementById('nvidia-self-heal-terminal');
  var statusEl = document.getElementById('nvidia-self-heal-out-status');
  var labelEl = document.getElementById('nvidia-self-heal-out-label');
  out.style.display = 'block';
  labelEl.textContent = label;
  term.textContent = output || '(no output)';
  term.scrollTop = term.scrollHeight;
  if (status === 'ok') {
    statusEl.textContent = '✓ done';
    statusEl.style.color = 'var(--ok-fg, #2c662d)';
  } else {
    statusEl.textContent = '✗ failed';
    statusEl.style.color = 'var(--crit-fg, #9f3a38)';
  }
}
function nvidiaRestartDrivers() {
  var btn = document.getElementById('nvidia-restart-btn');
  var original = btn.textContent;
  btn.disabled = true;
  btn.textContent = 'Restarting...';
  nvidiaSelfHealShowResult('restart bee-nvidia', 'ok', 'Running...');
  fetch('/api/services/action', {
    method:'POST',
    headers:{'Content-Type':'application/json'},
    body:JSON.stringify({name:'bee-nvidia', action:'restart'})
  }).then(r=>r.json()).then(d => {
    nvidiaSelfHealShowResult('restart bee-nvidia', d.status || 'error', d.output || d.error || '(no output)');
    setTimeout(function() {
      loadServices();
      loadNvidiaSelfHeal();
    }, 800);
  }).catch(e => {
    nvidiaSelfHealShowResult('restart bee-nvidia', 'error', 'Request failed: ' + e);
  }).finally(() => {
    btn.disabled = false;
    btn.textContent = original;
  });
}
function nvidiaResetGPU(index, btn) {
  var original = btn.textContent;
  btn.disabled = true;
  btn.textContent = 'Resetting...';
  nvidiaSelfHealShowResult('reset gpu ' + index, 'ok', 'Running...');
  fetch('/api/gpu/nvidia-reset', {
    method:'POST',
    headers:{'Content-Type':'application/json'},
    body:JSON.stringify({index:index})
  }).then(r=>r.json()).then(d => {
    nvidiaSelfHealShowResult('reset gpu ' + index, d.status || 'error', d.output || '(no output)');
    setTimeout(loadNvidiaSelfHeal, 1000);
  }).catch(e => {
    nvidiaSelfHealShowResult('reset gpu ' + index, 'error', 'Request failed: ' + e);
  }).finally(() => {
    btn.disabled = false;
    btn.textContent = original;
  });
}
function loadNvidiaSelfHeal() {
  var status = document.getElementById('nvidia-self-heal-status');
  var table = document.getElementById('nvidia-self-heal-table');
  status.textContent = 'Loading NVIDIA GPU status...';
  status.style.color = 'var(--muted)';
  table.innerHTML = '<p style="color:var(--muted);font-size:13px">Loading...</p>';
  fetch('/api/gpu/nvidia-status').then(r=>r.json()).then(gpus => {
    if (!Array.isArray(gpus) || gpus.length === 0) {
      status.textContent = 'No NVIDIA GPUs detected or nvidia-smi is unavailable.';
      table.innerHTML = '';
      return;
    }
    status.textContent = gpus.length + ' NVIDIA GPU(s) detected.';
    const rows = gpus.map(g => {
      const serial = g.serial || '';
      const bdf = g.bdf || '';
      const id = serial || bdf || ('gpu-' + g.index);
      const badge = g.status === 'OK' ? 'badge-ok' : g.status === 'RESET_REQUIRED' ? 'badge-err' : 'badge-warn';
      const details = [];
      if (serial) details.push('serial ' + serial);
      if (bdf) details.push('bdf ' + bdf);
      if (g.parse_failure && g.raw_line) details.push(g.raw_line);
      return '<tr>'
        + '<td style="white-space:nowrap">' + g.index + '</td>'
        + '<td>' + (g.name || 'unknown') + '</td>'
        + '<td style="font-family:monospace">' + id + '</td>'
        + '<td><span class="badge ' + badge + '">' + (g.status || 'UNKNOWN') + '</span>'
        + (details.length ? '<div style="margin-top:4px;font-size:12px;color:var(--muted)">' + details.join(' | ') + '</div>' : '')
        + '</td>'
        + '<td style="white-space:nowrap"><button class="btn btn-sm btn-secondary" onclick="nvidiaResetGPU(' + g.index + ', this)">Reset GPU</button></td>'
        + '</tr>';
    }).join('');
    table.innerHTML = '<table><tr><th>GPU</th><th>Model</th><th>ID</th><th>Status</th><th>Action</th></tr>' + rows + '</table>';
  }).catch(e => {
    status.textContent = 'Error loading NVIDIA GPU status: ' + e;
    status.style.color = 'var(--crit-fg, #9f3a38)';
    table.innerHTML = '';
  });
}
loadNvidiaSelfHeal();
</script>`
}

func renderTools() string {
	return `<div class="card" style="margin-bottom:16px">
  <div class="card-head">System Install</div>
  <div class="card-body">
    <div style="margin-bottom:20px">
    <div style="font-weight:600;margin-bottom:8px">Install to RAM</div>
    <p id="boot-source-text" style="color:var(--muted);font-size:13px;margin-bottom:8px">Detecting boot source...</p>
    <p id="ram-status-text" style="color:var(--muted);font-size:13px;margin-bottom:8px">Checking...</p>
    <button id="ram-install-btn" class="btn btn-primary" onclick="installToRAM()" style="display:none">&#9654; Copy to RAM</button>
    </div>
    <div style="border-top:1px solid var(--line);padding-top:20px">
    <div style="font-weight:600;margin-bottom:8px">Install to Disk</div>` +
		renderInstallInline() + `
    </div>
  </div>
</div>
<script>
fetch('/api/system/ram-status').then(r=>r.json()).then(d=>{
  const boot = document.getElementById('boot-source-text');
  const txt = document.getElementById('ram-status-text');
  const btn = document.getElementById('ram-install-btn');
  let source = d.device || d.source || 'unknown source';
  let kind = d.kind || 'unknown';
  let label = source;
  if (kind === 'ram') label = 'RAM';
  else if (kind === 'usb') label = 'USB (' + source + ')';
  else if (kind === 'cdrom') label = 'CD-ROM (' + source + ')';
  else if (kind === 'disk') label = 'disk (' + source + ')';
  else label = source;
  boot.textContent = 'Current boot source: ' + label + '.';
  txt.textContent = d.message || 'Checking...';
  if (d.status === 'ok' || d.in_ram) {
    txt.style.color = 'var(--ok, green)';
  } else if (d.status === 'failed') {
    txt.style.color = 'var(--err, #b91c1c)';
  } else {
    txt.style.color = 'var(--muted)';
  }
  if (d.can_start_task) {
    btn.style.display = '';
    btn.disabled = false;
  } else {
    btn.style.display = 'none';
  }
});
function installToRAM() {
  document.getElementById('ram-install-btn').disabled = true;
  fetch('/api/system/install-to-ram', {method:'POST'}).then(r=>r.json()).then(d=>{
    window.location.href = '/tasks#' + d.task_id;
  });
}
</script>

<div class="card"><div class="card-head">Support Bundle</div><div class="card-body">
<p style="font-size:13px;color:var(--muted);margin-bottom:12px">Downloads a tar.gz archive of all audit files, SAT results, and logs.</p>
` + renderSupportBundleInline() + `
<div style="border-top:1px solid var(--border);margin-top:16px;padding-top:16px">
  <div style="font-weight:600;margin-bottom:8px">Export to USB</div>
  ` + renderUSBExportInline() + `
</div>
</div></div>

<div class="card"><div class="card-head">Tool Check <button class="btn btn-sm btn-secondary" onclick="checkTools()" style="margin-left:auto">&#8635; Check</button></div>
<div class="card-body"><div id="tools-table"><p style="color:var(--muted);font-size:13px">Checking...</p></div></div></div>

<div class="card"><div class="card-head">NVIDIA Self Heal</div><div class="card-body">` +
		renderNvidiaSelfHealInline() + `</div></div>

<div class="card"><div class="card-head">Network</div><div class="card-body">` +
		renderNetworkInline() + `</div></div>

<div class="card"><div class="card-head">Services</div><div class="card-body">` +
		renderServicesInline() + `</div></div>


<script>
function checkTools() {
  document.getElementById('tools-table').innerHTML = '<p style="color:var(--muted);font-size:13px">Checking...</p>';
  fetch('/api/tools/check').then(r=>r.json()).then(tools => {
    const rows = tools.map(t =>
      '<tr><td>'+t.Name+'</td><td><span class="badge '+(t.OK ? 'badge-ok' : 'badge-err')+'">'+(t.OK ? '&#10003; '+t.Path : '&#10007; missing')+'</span></td></tr>'
    ).join('');
    document.getElementById('tools-table').innerHTML =
      '<table><tr><th>Tool</th><th>Status</th></tr>'+rows+'</table>';
  });
}
checkTools();
</script>`
}

func renderExportIndex(exportDir string) (string, error) {
	entries, err := listExportFiles(exportDir)
	if err != nil {
		return "", err
	}
	var body strings.Builder
	body.WriteString(`<!DOCTYPE html><html><head><meta charset="utf-8"><title>Bee Export Files</title></head><body>`)
	body.WriteString(`<h1>Bee Export Files</h1><ul>`)
	for _, entry := range entries {
		body.WriteString(`<li><a href="/export/file?path=` + url.QueryEscape(entry) + `">` + html.EscapeString(entry) + `</a></li>`)
	}
	if len(entries) == 0 {
		body.WriteString(`<li>No export files found.</li>`)
	}
	body.WriteString(`</ul></body></html>`)
	return body.String(), nil
}