import { installGlobalDiagnostics, logInfo } from "./logger.js";
installGlobalDiagnostics();

import { bindIdentityDialog, handleAccountConfirmationToken, handleResetToken, logoutCurrentSession, validateCurrentSession } from "./auth-ui.js";
import { getAuthToken, setAccessToken } from "@rustpad/session";
import { api } from "@rustpad/api";

function slugify(value, fallback) {
  return value.toLowerCase().normalize("NFKD").replace(/[\u0300-\u036f]/g, "").replace(/[^a-z0-9]+/g, "-").replace(/^-|-$/g, "") || fallback;
}

function bindPreview(inputId, previewId, countId, prefix, fallback) {
  const input = document.querySelector(inputId);
  const preview = document.querySelector(previewId);
  const count = document.querySelector(countId);
  const update = () => {
    count.textContent = `${input.value.length}/80`;
    preview.textContent = `${prefix}${slugify(input.value, fallback)}`;
  };
  input.addEventListener("input", update);
  update();
}

function setBusy(button, busy, idleText, busyText) {
  button.disabled = busy;
  button.textContent = busy ? busyText : idleText;
}

bindPreview("#pad-name", "#pad-slug-preview", "#pad-name-count", "/p/", "note");
bindPreview("#workspace-name", "#workspace-slug-preview", "#workspace-name-count", "/w/", "workspace");

document.querySelectorAll(".password-toggle").forEach((button) => {
  button.addEventListener("click", () => {
    const input = document.getElementById(button.dataset.target);
    const show = input.type === "password";
    input.type = show ? "text" : "password";
    button.textContent = show ? "Hide" : "Show";
  });
});

document.querySelector("#pad-form").addEventListener("submit", async (event) => {
  event.preventDefault();
  const name = document.querySelector("#pad-name");
  const password = document.querySelector("#pad-password");
  const button = document.querySelector("#pad-button");
  const error = document.querySelector("#pad-error");
  error.textContent = "";
  setBusy(button, true, "Create note", "Creating…");
  try {
    const payload = { name: name.value.trim() };
    if (password.value) payload.password = password.value;
    const result = await api("/api/pads", { method: "POST", headers: authHeaders(), body: JSON.stringify(payload) });
    if (password.value) { const grant = await api("/api/access-token", { method: "POST", body: JSON.stringify({ kind: "pad", slug: result.slug, password: password.value }) }); setAccessToken("pad", result.slug, grant.access_token); }
    window.location.assign(`${result.url}?view=split&mode=markdown`);
  } catch (requestError) {
    error.textContent = requestError.message;
  } finally {
    setBusy(button, false, "Create note", "Creating…");
  }
});

document.querySelector("#workspace-form").addEventListener("submit", async (event) => {
  event.preventDefault();
  const name = document.querySelector("#workspace-name");
  const password = document.querySelector("#workspace-password");
  const button = document.querySelector("#workspace-button");
  const error = document.querySelector("#workspace-error");
  error.textContent = "";
  setBusy(button, true, "Create workspace", "Creating…");
  try {
    const payload = { name: name.value.trim() };
    if (password.value) payload.password = password.value;
    const result = await api("/api/workspaces", { method: "POST", headers: authHeaders(), body: JSON.stringify(payload) });
    if (password.value) { const grant = await api("/api/access-token", { method: "POST", body: JSON.stringify({ kind: "workspace", slug: result.slug, password: password.value }) }); setAccessToken("workspace", result.slug, grant.access_token); }
    window.location.assign(result.url);
  } catch (requestError) {
    error.textContent = requestError.message;
  } finally {
    setBusy(button, false, "Create workspace", "Creating…");
  }
});

handleAccountConfirmationToken();
handleResetToken();

const identityDialog = document.querySelector("#identity-dialog");
const guestAccount = document.querySelector("#footer-account-guest");
const userAccount = document.querySelector("#footer-account-user");
const userLabel = document.querySelector("#footer-user-label");
const registerLink = document.querySelector("#footer-register");
const registrationEnabled = document.body.dataset.registrationEnabled === "true";
const resourcesDialog = document.querySelector("#resources-dialog");
const resourcesList = document.querySelector("#resources-list");
const resourcesError = document.querySelector("#resources-error");

function authHeaders() { const token = getAuthToken(); return token ? { Authorization: `Bearer ${token}` } : {}; }
function escapeHtml(value) { const node=document.createElement("div"); node.textContent=String(value ?? ""); return node.innerHTML; }
function shareExpiry(hours, forever) { if (forever) return null; const value=Number(hours); if (!Number.isFinite(value) || value <= 0 || value > 87600) throw new Error("Enter a validity between 1 and 87600 hours."); return new Date(Date.now()+value*3600000).toISOString(); }
function formatShareExpiry(value) { if (!value) return "Never expires"; const date=new Date(value); return Number.isNaN(date.getTime()) ? value : `Expires ${date.toLocaleString()}`; }
async function loadResources() {
  resourcesError.textContent = ""; resourcesList.innerHTML = "<p>Loading…</p>";
  try {
    const data = await api("/api/auth/resources", { headers: authHeaders() });
    const items = [...data.workspaces.map(item => ({...item, kind:"workspace", url:`/w/${item.slug}`})), ...data.pads.map(item => ({...item, kind:"pad", url:`/p/${item.slug}`}))];
    resourcesList.innerHTML = items.length ? "" : "<p>No assigned items yet.</p>";
    for (const item of items) {
      const row = document.createElement("article");
      row.className = "resource-row";
      const sharedLabel = !item.owned ? `<span class="resource-shared-badge">Shared by ${escapeHtml(item.shared_by || "another user")}</span>` : "";
      const permissionLabel = item.permission === "rw" ? "Read and write" : "Read only";
      row.classList.toggle("resource-row--shared", !Boolean(item.owned));
      row.innerHTML = `<div class="resource-main"><div class="resource-copy"><div class="resource-title-line"><a href="${item.url}">${escapeHtml(item.title)}</a>${sharedLabel}</div><small>${item.kind === "workspace" ? "Workspace" : "Note"}${item.private ? " · private" : ""}${!item.owned ? ` · ${permissionLabel}` : item.protected ? " · password protected" : ""}</small></div><div class="resource-actions">${item.owned ? `<button type="button" data-privacy>${item.private ? "Make public" : "Make private"}</button><button type="button" data-share>Share</button><button type="button" data-password>Change password</button><button type="button" data-delete>Delete</button>` : ""}</div></div><div class="resource-inline" data-inline hidden></div>`;

      const inline = row.querySelector("[data-inline]");
      const closeInline = () => { inline.hidden = true; inline.innerHTML = ""; };
      const setInlineMessage = (text, type = "") => {
        const message = inline.querySelector("[data-inline-message]");
        if (!message) return;
        message.className = `form-message resource-inline-message ${type}`.trim();
        message.textContent = text;
      };

      row.querySelector("[data-privacy]")?.addEventListener("click", async () => {
        try { await api("/api/auth/resources/privacy", {method:"POST",headers:authHeaders(),body:JSON.stringify({kind:item.kind,slug:item.slug,private:!Boolean(item.private)})}); await loadResources(); }
        catch(e){ resourcesError.textContent=e.message; }
      });
      row.querySelector("[data-share]")?.addEventListener("click", async () => {
        const dialog = document.createElement("dialog");
        dialog.className = "app-dialog share-dialog";
        dialog.innerHTML = `<div class="share-panel">
          <div class="share-panel-head"><div><h3>Share access</h3><p>Manage registered users and direct access links for <strong>${escapeHtml(item.title)}</strong>.</p></div><button class="dialog-close" type="button" data-cancel aria-label="Close share dialog">×</button></div>
          <div class="share-dialog-body">
            <section class="share-section"><div class="share-section-head"><div><h4>People with access</h4><p>Invite existing Rustpad users by e-mail.</p></div></div><form data-user-share-form class="share-form-grid">
              <label class="share-emails"><span>E-mail addresses</span><input name="emails" type="text" placeholder="alice@example.com, bob@example.com" autocomplete="off"></label>
              <label><span>Permission</span><select name="permission"><option value="ro">Read only</option><option value="rw">Read and write</option></select></label>
              <button class="primary-button" type="submit">Grant access</button>
            </form><div data-user-list class="share-list"></div></section>
            <section class="share-section"><div class="share-section-head"><div><h4>Direct links</h4><p>Create links for people without an account or manage existing links.</p></div></div><form data-link-form class="share-form-grid share-link-form">
              <label><span>Permission</span><select name="permission"><option value="ro">Read only</option><option value="rw">Read and write</option></select></label>
              <label><span>Valid for</span><div class="share-hours-field"><input name="hours" type="number" min="1" max="87600" value="24" inputmode="numeric"><span>hours</span></div></label>
              <label class="share-forever"><input name="forever" type="checkbox"><span>Never expires</span></label>
              <button class="primary-button" type="submit">Create link</button>
            </form><div data-link-list class="share-list"></div></section>
          </div>
          <div class="share-dialog-footer"><p class="form-message resource-inline-message" data-inline-message role="status"></p><button class="secondary-button" type="button" data-done>Done</button></div>
        </div>`;
        document.body.append(dialog);
        const closeDialog=()=>dialog.close();
        dialog.addEventListener("close",()=>dialog.remove(),{once:true});
        dialog.addEventListener("click",event=>{if(event.target===dialog) closeDialog();});
        dialog.querySelector("[data-cancel]").addEventListener("click",closeDialog);
        dialog.querySelector("[data-done]").addEventListener("click",closeDialog);
        const setDialogMessage = (text, type = "") => {
          const message = dialog.querySelector("[data-inline-message]");
          message.className = `form-message resource-inline-message ${type}`.trim();
          message.textContent = text;
        };
        const userForm=dialog.querySelector("[data-user-share-form]");
        const linkForm=dialog.querySelector("[data-link-form]");
        const userList=dialog.querySelector("[data-user-list]");
        const linkList=dialog.querySelector("[data-link-list]");
        const syncForever=()=>{linkForm.hours.disabled=linkForm.forever.checked;};
        linkForm.forever.addEventListener("change",syncForever); syncForever();
        const refresh=async()=>{
          const d=await api(`/api/auth/resources/sharing?kind=${encodeURIComponent(item.kind)}&slug=${encodeURIComponent(item.slug)}`,{headers:authHeaders()});
          userList.innerHTML=d.users.length?d.users.map(u=>`<div class="share-list-row"><div class="share-list-identity"><span class="share-avatar">${escapeHtml((u.nickname || u.email || "?").slice(0,1).toUpperCase())}</span><div><strong>${escapeHtml(u.nickname)}</strong><small>${escapeHtml(u.email)}</small></div></div><span class="share-role">${u.permission === "rw" ? "Read and write" : "Read only"}</span><button class="secondary-button compact-button" type="button" data-remove-user="${escapeHtml(u.email)}">Remove</button></div>`).join(""):'<p class="share-empty">No users have access.</p>';
          linkList.innerHTML=d.links.length?d.links.map(link=>`<form class="share-list-row share-link-row" data-link-token="${escapeHtml(link.token)}"><div class="share-link-info"><strong>Link ${escapeHtml(link.token.slice(0,8))}…</strong><small>${escapeHtml(formatShareExpiry(link.expires_at))}</small></div><label><span class="sr-only">Permission</span><select name="permission" aria-label="Link permission"><option value="ro" ${link.permission==="ro"?"selected":""}>Read only</option><option value="rw" ${link.permission==="rw"?"selected":""}>Read and write</option></select></label><label><span class="sr-only">Validity in hours</span><div class="share-hours-field"><input name="hours" type="number" min="1" max="87600" value="24" aria-label="New validity in hours"><span>h</span></div></label><label class="share-forever"><input name="forever" type="checkbox" ${link.expires_at?"":"checked"}><span>Never</span></label><div class="share-row-actions"><button class="secondary-button compact-button" type="submit">Update</button><button class="danger-button compact-button" type="button" data-revoke-link>Revoke</button></div></form>`).join(""):'<p class="share-empty">No active links.</p>';
          userList.querySelectorAll("[data-remove-user]").forEach(button=>button.addEventListener("click",async()=>{try{button.disabled=true;await api("/api/auth/resources/sharing",{method:"DELETE",headers:authHeaders(),body:JSON.stringify({kind:item.kind,slug:item.slug,email:button.dataset.removeUser})});setDialogMessage("Access removed.","success");await refresh();}catch(err){setDialogMessage(err.message,"error");button.disabled=false;}}));
          linkList.querySelectorAll("[data-link-token]").forEach(linkRow=>{
            const forever=linkRow.elements.forever, hours=linkRow.elements.hours; const sync=()=>{hours.disabled=forever.checked;}; forever.addEventListener("change",sync); sync();
            linkRow.addEventListener("submit",async event=>{event.preventDefault();try{const expires_at=shareExpiry(hours.value,forever.checked);await api("/api/auth/resources/share-links",{method:"PUT",headers:authHeaders(),body:JSON.stringify({kind:item.kind,slug:item.slug,token:linkRow.dataset.linkToken,permission:linkRow.elements.permission.value,expires_at})});setDialogMessage("Link updated.","success");await refresh();}catch(err){setDialogMessage(err.message,"error");}});
            linkRow.querySelector("[data-revoke-link]").addEventListener("click",async()=>{try{await api("/api/auth/resources/share-links",{method:"DELETE",headers:authHeaders(),body:JSON.stringify({kind:item.kind,slug:item.slug,token:linkRow.dataset.linkToken})});setDialogMessage("Link revoked.","success");await refresh();}catch(err){setDialogMessage(err.message,"error");}});
          });
        };
        userForm.addEventListener("submit",async event=>{event.preventDefault();try{await api("/api/auth/resources/sharing",{method:"POST",headers:authHeaders(),body:JSON.stringify({kind:item.kind,slug:item.slug,emails:userForm.emails.value,permission:userForm.permission.value})});userForm.emails.value="";setDialogMessage("Access granted.","success");await refresh();}catch(err){setDialogMessage(err.message,"error");}});
        linkForm.addEventListener("submit",async event=>{event.preventDefault();try{const expires_at=shareExpiry(linkForm.hours.value,linkForm.forever.checked);const result=await api("/api/auth/resources/share-links",{method:"POST",headers:authHeaders(),body:JSON.stringify({kind:item.kind,slug:item.slug,permission:linkForm.permission.value,expires_at})});const absolute=new URL(result.url,location.origin).href;await navigator.clipboard.writeText(absolute);setDialogMessage("Link created and copied.","success");await refresh();}catch(err){setDialogMessage(err.message,"error");}});
        dialog.showModal();
        try { await refresh(); } catch(err) { setDialogMessage(err.message,"error"); }
      });

      row.querySelector("[data-password]")?.addEventListener("click", () => {
        inline.hidden = false;
        inline.innerHTML = `<form class="resource-password-form" autocomplete="off"><label>New password<input name="resource-password" type="password" minlength="8" maxlength="128" autocomplete="new-password" data-bwignore="true" placeholder="Minimum 8 characters"></label><p class="resource-inline-help">Leave empty to remove password protection.</p><p class="form-message resource-inline-message" data-inline-message role="status"></p><div class="resource-inline-actions"><button class="primary-button" type="submit">Save</button><button class="secondary-button" type="button" data-cancel>Cancel</button></div></form>`;
        const form = inline.querySelector("form");
        const input = form.querySelector("input");
        form.querySelector("[data-cancel]").addEventListener("click", closeInline);
        form.addEventListener("submit", async event => {
          event.preventDefault();
          const password = input.value;
          if (password && password.length < 8) { setInlineMessage("Password must contain at least 8 characters.", "error"); return; }
          const submit = form.querySelector('[type="submit"]');
          submit.disabled = true;
          setInlineMessage("");
          try {
            await api("/api/auth/resources", { method:"PUT", headers:authHeaders(), body:JSON.stringify({kind:item.kind, slug:item.slug, password}) });
            await loadResources();
          } catch(e) {
            setInlineMessage(e.message, "error");
            submit.disabled = false;
          }
        });
        input.focus();
      });

      row.querySelector("[data-delete]")?.addEventListener("click", () => {
        inline.hidden = false;
        inline.innerHTML = `<div class="resource-delete-confirm"><p>Delete “${item.title}” permanently?</p><p class="form-message resource-inline-message" data-inline-message role="status"></p><div class="resource-inline-actions"><button class="danger-button" type="button" data-confirm-delete>Delete</button><button class="secondary-button" type="button" data-cancel>Cancel</button></div></div>`;
        inline.querySelector("[data-cancel]").addEventListener("click", closeInline);
        inline.querySelector("[data-confirm-delete]").addEventListener("click", async event => {
          event.currentTarget.disabled = true;
          setInlineMessage("");
          try {
            await api("/api/auth/resources", { method:"DELETE", headers:authHeaders(), body:JSON.stringify({kind:item.kind, slug:item.slug}) });
            await loadResources();
          } catch(e) {
            setInlineMessage(e.message, "error");
            event.currentTarget.disabled = false;
          }
        });
      });
      resourcesList.append(row);
    }
  } catch(e) { resourcesList.innerHTML=""; resourcesError.textContent=e.message; }
}


function renderAccount(session) {
  guestAccount.hidden = Boolean(session);
  userAccount.hidden = !session;
  if (session) userLabel.textContent = `Signed in as ${session.nickname}`;
  registerLink.hidden = !registrationEnabled;
}

if (identityDialog) {
  const authDialog = bindIdentityDialog({
    dialog: identityDialog,
    onIdentity: async (_nickname, session) => renderAccount(session),
  });

  document.querySelector("#footer-login")?.addEventListener("click", () => {
    authDialog.setMode("login");
    identityDialog.showModal();
  });
  registerLink?.addEventListener("click", () => {
    authDialog.setMode("register");
    identityDialog.showModal();
  });
  document.querySelector("#footer-resources")?.addEventListener("click", async () => { resourcesDialog.showModal(); await loadResources(); });
  document.querySelector("#close-resources")?.addEventListener("click", () => resourcesDialog.close());
  resourcesDialog?.addEventListener("click", (event) => { if (event.target === resourcesDialog) resourcesDialog.close(); });
  document.querySelector("#footer-logout")?.addEventListener("click", async () => {
    await logoutCurrentSession();
    renderAccount(null);
  });

  renderAccount(null);
  validateCurrentSession().then(renderAccount);
}