export const WebAuthnScript = ({
  isRegister = false,
  isPasskeys = false,
}: {
  isRegister?: boolean;
  isPasskeys?: boolean;
}) => {
  return (
    <>
      <script src="/public/auth-client.js?v=6"></script>
      {isRegister && (
        <script
          type="module"
          dangerouslySetInnerHTML={{
            __html: `
          import { entropyToMnemonic } from '/public/utils/bip39.ts';

          const urlParams = new URLSearchParams(window.location.search);
          const codeParam = urlParams.get('code');
          if (codeParam) {
            const input = document.getElementById('inviteCode');
            if (input) {
              input.value = codeParam;
              document.getElementById('username').focus();
            }
          }

          let generatedMnemonic = "";

          document.getElementById('registerBtn').addEventListener('click', async () => {
            const username = document.getElementById('username').value.trim();
            const inviteCode = document.getElementById('inviteCode').value.trim();

            if (!username || !inviteCode) {
              setStatus("Username and Invite Code are required.", true);
              return;
            }

            const loader = document.getElementById('loadingIndicator');
            const btn = document.getElementById('registerBtn');
            loader.style.display = 'block';
            btn.disabled = true;
            setStatus('');

            try {
              const res = await startWebAuthnRegistration(username, inviteCode);
              if (res && res.success) {
                // Generate 16 bytes of entropy for 12 BIP-39 words
                const entropy = new Uint8Array(16);
                crypto.getRandomValues(entropy);
                generatedMnemonic = await entropyToMnemonic(entropy);

                const words = generatedMnemonic.split(' ');
                const grid = document.getElementById('wordGrid');
                grid.innerHTML = words.map((w, idx) => \`
                  <div class="word-cell">
                    <span class="word-num">\${idx + 1}.</span>
                    <span class="word-text">\${w}</span>
                  </div>
                \`).join('');

                // Switch to Step 2
                document.getElementById('step1Container').style.display = 'none';
                document.getElementById('step2Container').style.display = 'block';
                document.getElementById('registerTitle').textContent = "Recovery Voucher";
                document.getElementById('registerSubtitle').textContent = "Save your 12-word backup key in a safe place.";
              }
            } catch (err) {
              console.error(err);
            } finally {
              loader.style.display = 'none';
              btn.disabled = false;
            }
          });

          document.getElementById('copyWordsBtn').addEventListener('click', async () => {
            if (!generatedMnemonic) return;
            try {
              await navigator.clipboard.writeText(generatedMnemonic);
              const btn = document.getElementById('copyWordsBtn');
              const origHtml = btn.innerHTML;
              btn.innerHTML = '<span>✓ Copied to Clipboard!</span>';
              btn.style.borderColor = 'var(--success)';
              btn.style.color = 'var(--success-text)';
              setTimeout(() => {
                btn.innerHTML = origHtml;
                btn.style.borderColor = '';
                btn.style.color = '';
              }, 2500);
            } catch (_e) {
              alert("Select and copy the words manually: " + generatedMnemonic);
            }
          });
        `,
          }}
        >
        </script>
      )}

      {isPasskeys && (
        <script
          type="module"
          dangerouslySetInnerHTML={{
            __html: `
          import { entropyToMnemonic } from '/public/utils/bip39.ts';

          // Revoke Passkey Logic
          document.querySelectorAll('.revoke-passkey-btn').forEach(btn => {
            btn.addEventListener('click', async (e) => {
              if (e.currentTarget.disabled) return;
              if (!confirm('Are you sure you want to remove this passkey?')) return;

              const passkeyId = e.currentTarget.getAttribute('data-passkey-id');
              const originalText = e.currentTarget.textContent;
              e.currentTarget.textContent = 'Removing...';
              e.currentTarget.disabled = true;

              try {
                const res = await fetch(\`/api/passkeys/\${passkeyId}\`, {
                  method: 'DELETE'
                });

                if (res.ok) {
                  window.location.reload();
                } else {
                  const data = await res.json();
                  alert(data.error || 'Failed to remove passkey');
                  e.currentTarget.textContent = originalText;
                  e.currentTarget.disabled = false;
                }
              } catch (err) {
                alert('An error occurred');
                e.currentTarget.textContent = originalText;
                e.currentTarget.disabled = false;
              }
            });
          });

          // Add Passkey Logic
          const addContainer = document.getElementById('addPasskeyContainer');
          const addBtn = document.getElementById('addPasskeyBtn');
          const cancelBtn = document.getElementById('cancelAddPasskeyBtn');
          const confirmBtn = document.getElementById('confirmAddPasskeyBtn');
          const statusDiv = document.getElementById('addPasskeyStatus');

          addBtn?.addEventListener('click', () => {
            addContainer.style.display = 'block';
            addBtn.style.display = 'none';
          });

          cancelBtn?.addEventListener('click', () => {
            addContainer.style.display = 'none';
            addBtn.style.display = 'inline-flex';
            statusDiv.textContent = '';
          });

          confirmBtn?.addEventListener('click', async () => {
            confirmBtn.disabled = true;
            statusDiv.textContent = 'Follow prompt on device...';
            statusDiv.style.color = 'var(--primary)';

            try {
              const resp = await fetch("/api/passkeys/register/challenge", { method: "POST" });
              const data = await resp.json();
              if (!resp.ok) {
                statusDiv.textContent = data.error || "Failed to get registration challenge";
                statusDiv.style.color = 'var(--danger)';
                confirmBtn.disabled = false;
                return;
              }

              const { startRegistration } = SimpleWebAuthnBrowser;
              const attResp = await startRegistration({ optionsJSON: data.options });

              const verificationResp = await fetch("/api/passkeys/register/verify", {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify({ response: attResp }),
              });

              const verificationJSON = await verificationResp.json();
              if (verificationJSON.success) {
                statusDiv.textContent = "Passkey registered successfully! Reloading...";
                statusDiv.style.color = 'var(--success-text)';
                setTimeout(() => window.location.reload(), 1000);
              } else {
                statusDiv.textContent = verificationJSON.error || "Registration verification failed";
                statusDiv.style.color = 'var(--danger)';
                confirmBtn.disabled = false;
              }
            } catch (err) {
              statusDiv.textContent = err.message || 'An error occurred.';
              statusDiv.style.color = 'var(--danger)';
              confirmBtn.disabled = false;
            }
          });

          // Re-generate Recovery Voucher
          let backupMnemonic = "";
          document.getElementById('regenVoucherBtn')?.addEventListener('click', async () => {
            const entropy = new Uint8Array(16);
            crypto.getRandomValues(entropy);
            backupMnemonic = await entropyToMnemonic(entropy);

            const grid = document.getElementById('generatedWordGrid');
            grid.innerHTML = backupMnemonic.split(' ').map((w, idx) => \`
              <div class="word-cell">
                <span style="color: var(--text-muted); font-size: 0.75rem; width: 18px;">\${idx + 1}.</span>
                <span style="color: var(--text-primary); font-weight: 600;">\${w}</span>
              </div>
            \`).join('');

            document.getElementById('voucherModal').style.display = 'block';
          });

          document.getElementById('copyVoucherBtn')?.addEventListener('click', async () => {
            if (!backupMnemonic) return;
            try {
              await navigator.clipboard.writeText(backupMnemonic);
              const btn = document.getElementById('copyVoucherBtn');
              const origHtml = btn.innerHTML;
              btn.innerHTML = '<span>✓ Copied 12 Words to Clipboard!</span>';
              setTimeout(() => { btn.innerHTML = origHtml; }, 2500);
            } catch (_e) {
              alert(backupMnemonic);
            }
          });
        `,
          }}
        >
        </script>
      )}
    </>
  );
};