route: add contact list view

added new route /contacts/npub... to show contact lists of users.
each user has about text, follow/unfollow buttons.

fixed CSS and JavaScript links in index.html to support deeper
path i.e. /contacts/npub... uri's.

src/contacts.ts

@@ -1,29 +1,99 @@
-import {Event, nip19} from 'nostr-tools';
+import {Event, nip19, signEvent} from 'nostr-tools';
 import {elem} from './utils/dom';
 import {dateTime} from './utils/time';
-import {isPTag, sortByCreatedAt} from './events';
-import {getViewContent} from './view';
+import {isNotNonceTag, isPTag} from './events';
+import {getViewContent, getViewElem, getViewOptions, setViewElem} from './view';
+import {powEvent} from './system';
+import {config} from './settings';
 import {getMetadata} from './profiles';
+import {publish} from './relays';
+import {parseJSON} from './media';
 
 const contactHistoryMap: {
-  [pubkey: string]: Event[]
+  [pubkey: string]: Event[];
 } = {};
 
+const hasOwnContactList = () => {
+  return !!contactHistoryMap[config.pubkey];
+};
+
+/**
+ * returns true if user is following pubkey
+ */
+export const isFollowing = (pubkey: string) => {
+  const following = contactHistoryMap[config.pubkey]?.at(0);
+  if (!following) {
+    return false;
+  }
+  return following.tags.some(([tag, value]) => tag === 'p' && value === pubkey);
+};
+
+export const updateFollowBtn = (pubkey: string) => {
+  const followBtn = getViewElem(`followBtn-${pubkey}`);
+  const view = getViewOptions();
+  if (followBtn && (view.type === 'contacts' || view.type === 'profile')) {
+    const hasContact = isFollowing(pubkey);
+    const isMe = config.pubkey === pubkey;
+    followBtn.textContent = isMe ? 'following' : hasContact ? 'unfollow' : 'follow';
+    followBtn.classList.remove('primary', 'secondary');
+    followBtn.classList.add(hasContact ? 'secondary' : 'primary');
+    followBtn.hidden = false;
+  }
+};
+
 const updateFollowing = (evt: Event) => {
-  const following = getViewContent().querySelector(`[data-following="${evt.pubkey}"]`);
-  if (following) {
-    const count = evt.tags.filter(isPTag).length;
-    const anchor = elem('a', {
-      data: {following: evt.pubkey},
-      href: `/${evt.id}`,
-      title: dateTime.format(new Date(evt.created_at * 1000)),
-    }, `following ${count}`);
-    following.replaceWith(anchor);
+  const view = getViewOptions();
+  if (evt.pubkey === config.pubkey) {
+    localStorage.setItem('follwing', JSON.stringify(evt));
+  }
+  switch(view.type) {
+    case 'contacts':
+      if (hasOwnContactList()) {
+        const lastContactList = contactHistoryMap[config.pubkey]?.at(1);
+        if (lastContactList) {
+          const [added, removed] = findChanges(evt, lastContactList);
+          [
+            ...added.map(([, pubkey]) => pubkey),
+            ...removed.map(([, pubkey]) => pubkey),
+          ].forEach(updateFollowBtn);
+        } else {
+          evt.tags
+            .filter(isPTag)
+            .forEach(([, pubkey]) => updateFollowBtn(pubkey));
+        }
+      }
+      break;
+    case 'profile':
+      updateFollowBtn(view.id);
+      if (view.id === evt.pubkey) {
+        // update following link
+        const following = getViewElem('following') as HTMLElement;
+        if (following) {
+          const count = evt.tags.filter(isPTag).length;
+          const anchor = elem('a', {
+            data: {following: evt.pubkey},
+            href: `/contacts/${nip19.npubEncode(evt.pubkey)}`,
+            title: dateTime.format(evt.created_at * 1000),
+          }, [
+            'following ',
+            elem('span', {className: 'highlight'}, count),
+          ]);
+          following.replaceWith(anchor);
+          setViewElem('following', anchor);
+        }
+      }
+      break;
+  }
+};
+
+export const refreshFollowing = (id: string) => {
+  if (contactHistoryMap[id]?.at(0)) {
+    updateFollowing(contactHistoryMap[id][0]);
   }
 };
 
 export const setContactList = (evt: Event) => {
-  let contactHistory = contactHistoryMap[evt.pubkey];
+  const contactHistory = contactHistoryMap[evt.pubkey];
   if (!contactHistory) {
     contactHistoryMap[evt.pubkey] = [evt];
     updateFollowing(evt);
@@ -32,9 +102,8 @@ export const setContactList = (evt: Event) => {
   if (contactHistory.find(({id}) => id === evt.id)) {
     return;
   }
-  contactHistory.push(evt);
-  contactHistory.sort(sortByCreatedAt);
-  updateFollowing(contactHistory[0]);
+  contactHistory.unshift(evt);
+  updateFollowing(contactHistory[0]); // TODO: ensure that this is newest contactlist?
 };
 
 /**
@@ -49,26 +118,8 @@ const findChanges = (current: Event, previous: Event) => {
   return [addedContacts, removedContacts];
 };
 
-export const updateContactList = (evt: Event) => {
-  const contactHistory = contactHistoryMap[evt.pubkey];
-  if (contactHistory.length === 1) {
-    return [contactHistory[0].tags.filter(isPTag)];
-  }
-  const pos = contactHistory.findIndex(({id}) => id === evt.id);
-  if (evt.id === contactHistory.at(-1)?.id) { // oldest known contact-list update
-    // update existing contact entries
-    contactHistory
-      .slice(0, -1)
-      .forEach((entry, i) => {
-        const previous = contactHistory[i + 1];
-        const [added, removed] = findChanges(entry, previous);
-        const contactNote = getViewContent().querySelector(`[data-contacts="${entry.id}"]`);
-        const updated = getContactUpdateMessage(added, removed);
-        contactNote?.replaceChildren(...updated);
-      });
-    return [evt.tags.filter(isPTag)];
-  }
-  return findChanges(evt, contactHistory[pos + 1]);
+export const resetContactList = (pubkey: string) => {
+  delete contactHistoryMap[pubkey];
 };
 
 export const getContactUpdateMessage = (
@@ -76,7 +127,6 @@ export const getContactUpdateMessage = (
   removedList: string[][],
 ) => {
   const content = [];
-  // console.log(addedContacts)
   if (addedList.length && addedList[0]) {
     const pubkey = addedList[0][1];
     const {userName} = getMetadata(pubkey);
@@ -90,7 +140,145 @@ export const getContactUpdateMessage = (
     content.push(` (+ ${addedList.length - 1} others)`);
   }
   if (removedList?.length > 0) {
-    content.push(elem('small', {}, ` and unfollowed ${removedList.length}`));
+    if (content.length) {
+      content.push(' and');
+    }
+    content.push(' unfollowed ');
+    if (removedList.length > 1) {
+      content.push(`${removedList.length}`);
+    } else {
+      const removedPubkey = removedList[0][1];
+      const {userName: removeduserName} = getMetadata(removedPubkey);
+      const removedNpub = nip19.npubEncode(removedPubkey);
+      content.push(elem('a', {href: `/${removedNpub}`, data: {profile: removedPubkey}}, removeduserName));
+    }
   }
   return content;
 };
+
+export const updateContactList = (evt: Event) => {
+  const contactHistory = contactHistoryMap[evt.pubkey];
+  if (contactHistory.length === 1) {
+    return [contactHistory[0].tags.filter(isPTag)];
+  }
+  const pos = contactHistory.findIndex(({id}) => id === evt.id);
+  if (evt.id !== contactHistory.at(-1)?.id) { // not oldest known contact-list update
+    return findChanges(evt, contactHistory[pos + 1]);
+  }
+  // update existing contact entries
+  contactHistory
+    .slice(0, -1)
+    .forEach((entry, i) => {
+      const previous = contactHistory[i + 1];
+      const [added, removed] = findChanges(entry, previous);
+      const contactNote = getViewContent().querySelector(`[data-contacts="${entry.id}"]`);
+      const updated = getContactUpdateMessage(added, removed);
+      contactNote?.replaceChildren(...updated);
+    });
+  return [evt.tags.filter(isPTag)];
+};
+
+/**
+ * returns list of pubkeys the given pubkey is following
+ * @param pubkey
+ * @returns {String[]} pubkeys
+ */
+export const getContacts = (pubkey: string) => {
+  const following = contactHistoryMap[pubkey]?.at(0);
+  if (!following) {
+    return [];
+  }
+  return following.tags
+    .filter(isPTag)
+    .map(([, pubkey]) => pubkey);
+};
+
+/**
+ * returns list of pubkeys the user is following, if none found it will try from localstorage
+ * @returns {String[]} pubkeys
+ */
+export const getOwnContacts = () => {
+  const following = getContacts(config.pubkey);
+  if (following.length) {
+    return following;
+  }
+  const followingFromStorage = localStorage.getItem('follwing');
+  if (followingFromStorage) {
+    const follwingData = parseJSON(followingFromStorage) as Event;
+    // TODO: ensure signature matches
+    if (follwingData && follwingData.pubkey === config.pubkey) {
+      return follwingData.tags
+        .filter(isPTag)
+        .map(([, pubkey]) => pubkey);
+    }
+  }
+  return [];
+};
+
+const updateContactTags = (
+  followeeID: string,
+  currentContactList: Event | undefined,
+) => {
+  if (!currentContactList?.tags) {
+    return [['p', followeeID], ['p', config.pubkey]];
+  }
+  if (currentContactList.tags.some(([tag, id]) => tag === 'p' && id === followeeID)) {
+    return currentContactList.tags
+      .filter(([tag, id]) => tag === 'p' && id !== followeeID);
+  }
+  return [
+    ['p', followeeID],
+    ...currentContactList.tags
+      .filter(isNotNonceTag),
+  ];
+};
+
+export const followContact = async (pubkey: string) => {
+  const followBtn = getViewElem(`followBtn-${pubkey}`) as HTMLButtonElement;
+  const statusElem = getViewElem(`followStatus-${pubkey}`) as HTMLElement;
+  if (!followBtn || !statusElem) {
+    return;
+  }
+  const following = contactHistoryMap[config.pubkey]?.at(0);
+  const unsignedEvent = {
+    kind: 3,
+    pubkey: config.pubkey,
+    content: '',
+    tags: updateContactTags(pubkey, following),
+    created_at: Math.floor(Date.now() * 0.001),
+  };
+
+  followBtn.disabled = true;
+  const newContactListEvent = await powEvent(unsignedEvent, {
+    difficulty: config.difficulty,
+    statusElem,
+    timeout: config.timeout,
+  }).catch(console.warn);
+
+  if (!newContactListEvent) {
+    statusElem.textContent = '';
+    statusElem.hidden = false;
+    followBtn.disabled = false;
+    return;
+  }
+  const privatekey = localStorage.getItem('private_key');
+  if (!privatekey) {
+    statusElem.textContent = 'no private key to sign';
+    statusElem.hidden = false;
+    followBtn.disabled = false;
+    return;
+  }
+  const sig = signEvent(newContactListEvent, privatekey);
+  // TODO: validateEvent?
+  if (sig) {
+    statusElem.textContent = 'publishing…';
+    publish({...newContactListEvent, sig}, (relay, error) => {
+      if (error) {
+        return console.error(error, relay);
+      }
+      statusElem.hidden = true;
+      followBtn.disabled = false;
+      console.info(`event published by ${relay}`);
+    });
+  }
+};

src/events.ts

@@ -1,9 +1,11 @@
 import {Event} from 'nostr-tools';
 import {zeroLeadingBitsCount} from './utils/crypto';
 
+export const isEvent = <T>(evt?: T): evt is T => evt !== undefined;
 export const isMention = ([tag, , , marker]: string[]) => tag === 'e' && marker === 'mention';
 export const isPTag = ([tag]: string[]) => tag === 'p';
 export const hasEventTag = (tag: string[]) => tag[0] === 'e';
+export const isNotNonceTag = ([tag]: string[]) => tag !== 'nonce';
 
 /**
  * validate proof-of-work of a nostr event per nip-13.

src/index.html

@@ -6,7 +6,7 @@
     <meta name="apple-mobile-web-app-status-bar-style" content="default">
     <meta name="apple-mobile-web-app-capable" content="yes">
     <title>nostr</title>
-    <link rel="stylesheet" href="styles/main.css" type="text/css">
+    <link rel="stylesheet" href="/styles/main.css" type="text/css">
     <link rel="manifest" href="/manifest.json">
   </head>
   <body>
@@ -24,8 +24,8 @@
                 <legend>write a new note</legend>
                 <textarea name="message" rows="1"></textarea>
                 <div class="buttons">
-                  <button type="submit" id="publish" disabled>send</button>
-                  <button type="button" name="back">back</button>
+                  <button type="submit" id="publish" class="primary" disabled>send</button>
+                  <button type="button" name="back" class="primary">back</button>
                 </div>
                 <small id="sendstatus" class="form-status"></small>
               </fieldset>
@@ -42,7 +42,7 @@
                 <input type="url" name="picture" id="profile_picture" placeholder="https://your.domain/image.png">
                 <div class="buttons">
                   <small id="profilestatus" class="form-status" hidden></small>
-                  <button type="submit" name="publish" tabindex="0" disabled>publish</button>
+                  <button type="submit" name="publish" class="primary" tabindex="0" disabled>publish</button>
                 </div>
               </form>
               <form action="#" name="options">
@@ -86,8 +86,8 @@
                 <input type="password" id="privatekey" autocomplete="off">
                 <div class="buttons">
                   <small id="keystatus" class="form-status" hidden></small>
-                  <button type="button" name="generate" tabindex="0">new</button>
-                  <button type="button" name="import" tabindex="0" disabled>save</button>
+                  <button type="button" name="generate" class="primary" tabindex="0">new</button>
+                  <button type="button" name="import" class="primary" tabindex="0" disabled>save</button>
                 </div>
               </form>
               <footer class="text">
@@ -102,11 +102,13 @@
         <!-- views are inserted here -->
       </main>
       <nav>
-        <a href="/"><!--<span>X</span>-->feed</a>
+        <a href="/">home</a>
+        <a href="/feed">global</a>
+        <span class="spacer"></span>
         <button tpye="button" name="settings">settings</button>
       </nav>
     </div>
 
   </body>
-  <script src="main.js"></script>
+  <script src="/main.js"></script>
 </html>

src/main.ts

@@ -4,15 +4,15 @@ import {elem} from './utils/dom';
 import {bounce} from './utils/time';
 import {isWssUrl} from './utils/url';
 import {closeSettingsView, config, toggleSettingsView} from './settings';
-import {sub24hFeed, subEventID, subNote, subProfile} from './subscriptions'
-import {getReplyTo, hasEventTag, isMention, sortByCreatedAt, sortEventCreatedAt} from './events';
+import {subGlobalFeed, subEventID, subNote, subProfile, subPubkeys, subOwnContacts, subContactList} from './subscriptions'
+import {getReplyTo, hasEventTag, isEvent, isMention, sortByCreatedAt, sortEventCreatedAt} from './events';
 import {clearView, getViewContent, getViewElem, getViewOptions, setViewElem, view} from './view';
 import {handleReaction, handleUpvote} from './reactions';
 import {closePublishView, openWriteInput, togglePublishView} from './write';
 import {handleMetadata, renderProfile} from './profiles';
-import {getContactUpdateMessage, setContactList, updateContactList} from './contacts';
+import {followContact, getContactUpdateMessage, getContacts, getOwnContacts, refreshFollowing, resetContactList, setContactList, updateContactList, updateFollowBtn} from './contacts';
 import {EventWithNip19, EventWithNip19AndReplyTo, textNoteList, replyList} from './notes';
-import {createTextNote, renderEventDetails, renderRecommendServer, renderUpdateContact} from './ui';
+import {createContact, createTextNote, renderEventDetails, renderRecommendServer, renderUpdateContact} from './ui';
 
 // curl -H 'accept: application/nostr+json' https://relay.nostr.ch/
 
@@ -38,6 +38,18 @@ const renderNote = (
   setViewElem(evt.id, article);
 };
 
+const renderContact = (pubkey: string) => {
+  if (getViewElem(`contact-${pubkey}`)) { // contact already in view
+    updateFollowBtn(pubkey);
+    return;
+  }
+  const contact = createContact(pubkey);
+  if (contact) {
+    getViewContent().append(contact);
+    setViewElem(`contact-${pubkey}`, contact);
+  }
+};
+
 const hasEnoughPOW = (
   [tag, , commitment]: string[],
   eventId: string
@@ -55,7 +67,6 @@ const renderFeed = bounce(() => {
         .forEach(renderNote);
       break;
     case 'profile':
-      const isEvent = <T>(evt?: T): evt is T => evt !== undefined;
       [
         ...textNoteList // get notes
           .filter(note => note.pubkey === view.id),
@@ -65,9 +76,24 @@ const renderFeed = bounce(() => {
       ]
         .sort(sortByCreatedAt)
         .reverse()
-        .forEach(renderNote); // render in-reply-to
+        .forEach(renderNote);
 
       renderProfile(view.id);
+      refreshFollowing(view.id);
+      break;
+    case 'home':
+      const ids = getOwnContacts();
+      [
+        ...textNoteList
+          .filter(note => ids.includes(note.pubkey)),
+        ...replyList // search id in notes and replies
+          .filter(reply => ids.includes(reply.pubkey))
+          .map(reply => textNoteList.find(note => note.id === reply.replyTo))
+          .filter(isEvent),
+      ]
+        .sort(sortByCreatedAt)
+        .reverse()
+        .forEach(renderNote);
       break;
     case 'feed':
       const now = Math.floor(Date.now() * 0.001);
@@ -82,12 +108,16 @@ const renderFeed = bounce(() => {
         .reverse()
         .forEach(renderNote);
       break;
+    case 'contacts':
+      getContacts(view.id)
+        .forEach(renderContact);
+      break;
   }
 }, 17); // (16.666 rounded, an arbitrary value to limit updates to max 60x per s)
 
 const renderReply = (evt: EventWithNip19AndReplyTo) => {
   const parent = getViewElem(evt.replyTo);
-  if (!parent) { // root article has not been rendered
+  if (!parent || getViewElem(evt.id)) {
     return;
   }
   let replyContainer = parent.querySelector('.mbox-replies');
@@ -110,7 +140,6 @@ const handleReply = (evt: EventWithNip19, relay: string) => {
   }
   const replyTo = getReplyTo(evt);
   if (!replyTo) {
-    console.warn('expected to find reply-to-event-id', evt);
     return;
   }
   const evtWithReplyTo = {replyTo, ...evt};
@@ -124,7 +153,7 @@ const handleTextNote = (evt: Event, relay: string) => {
     return;
   }
   if (eventRelayMap[evt.id]) {
-    eventRelayMap[evt.id] = [...(eventRelayMap[evt.id]), relay]; // TODO: just push?
+    eventRelayMap[evt.id] = [...(eventRelayMap[evt.id]), relay]; // TODO: remove eventRelayMap and just check for getViewElem?
   } else {
     eventRelayMap[evt.id] = [relay];
     const evtWithNip19 = {
@@ -145,38 +174,45 @@ const handleTextNote = (evt: Event, relay: string) => {
   }
 };
 
-config.rerenderFeed = () => {
+const rerenderFeed = () => {
   clearView();
   renderFeed();
 };
+config.rerenderFeed = rerenderFeed;
 
 const handleContactList = (evt: Event, relay: string) => {
+  // TODO: if newer and view.type === 'home' rerenderFeed()
   setContactList(evt);
   const view = getViewOptions();
+  if (getViewElem(evt.id)) {
+    return;
+  }
   if (
-    getViewElem(evt.id)
-    || view.type !== 'profile'
-    || view.id !== evt.pubkey
+    view.type === 'contacts'
+    && [view.id, config.pubkey].includes(evt.pubkey) // render if contact-list is from current users or current view
   ) {
+    renderFeed();
     return;
   }
-  // use find instead of sort?
-  const closestTextNotes = textNoteList.sort(sortEventCreatedAt(evt.created_at));
-  const closestNote = getViewElem(closestTextNotes[0].id);
-  if (!closestNote) {
-    // no close note, try later
-    setTimeout(() => handleContactList(evt, relay), 1500);
-    return;
-  };
-  const [addedContacts, removedContacts] = updateContactList(evt);
-  const content = getContactUpdateMessage(addedContacts, removedContacts);
-  if (!content.length) {
-    // P same as before, maybe only evt.content or 'a' tags changed?
-    return;
+  if (view.type === 'profile' && view.id === evt.pubkey) {
+    // use find instead of sort?
+    const closestTextNotes = textNoteList.sort(sortEventCreatedAt(evt.created_at));
+    const closestNote = getViewElem(closestTextNotes[0].id);
+    if (!closestNote) {
+      // no close note, try later
+      setTimeout(() => handleContactList(evt, relay), 1500);
+      return;
+    };
+    const [addedContacts, removedContacts] = updateContactList(evt);
+    const content = getContactUpdateMessage(addedContacts, removedContacts);
+    if (!content.length) {
+      // P same as before, maybe only evt.content or 'a' tags changed?
+      return;
+    }
+    const art = renderUpdateContact({...evt, content}, relay);
+    closestNote.after(art);
+    setViewElem(evt.id, art);
   }
-  const art = renderUpdateContact({...evt, content}, relay);
-  closestNote.after(art);
-  setViewElem(evt.id, art);
 };
 
 const handleRecommendServer = (evt: Event, relay: string) => {
@@ -198,12 +234,12 @@ const handleRecommendServer = (evt: Event, relay: string) => {
 };
 
 const onEventDetails = (evt: Event, relay: string) => {
-  if (getViewElem(`detail-${evt.id}`)) {
+  if (getViewElem(evt.id)) {
     return;
   }
-  const art = renderEventDetails(evt, relay);
-  getViewContent().append(art);
-  setViewElem(`detail-${evt.id}`, art);
+  const article = renderEventDetails(evt, relay);
+  getViewContent().append(article);
+  setViewElem(evt.id, article);
 };
 
 const onEvent = (evt: Event, relay: string) => {
@@ -230,8 +266,19 @@ const onEvent = (evt: Event, relay: string) => {
 // subscribe and change view
 const route = (path: string) => {
   if (path === '/') {
-    sub24hFeed(onEvent);
-    view('/', {type: 'feed'});
+    const contactList = getOwnContacts();
+    if (contactList.length) {
+      subPubkeys(contactList, onEvent);
+      view(`/`, {type: 'home'});
+    } else {
+      subGlobalFeed(onEvent);
+      view('/feed', {type: 'feed'});
+    }
+    return;
+  }
+  if (path === '/feed') {
+    subGlobalFeed(onEvent);
+    view('/feed', {type: 'feed'});
   } else if (path.length === 64 && path.match(/^\/[0-9a-z]+$/)) {
     const {type, data} = nip19.decode(path.slice(1));
     if (typeof data !== 'string') {
@@ -246,22 +293,31 @@ const route = (path: string) => {
       case 'npub':
         subProfile(data, onEvent);
         view(path, {type: 'profile', id: data});
+        updateFollowBtn(data);
         break;
       default:
         console.warn(`type ${type} not yet supported`);
     }
     renderFeed();
+  } else if (path.length === 73 && path.match(/^\/contacts\/npub[0-9a-z]+$/)) {
+    const contactNpub = path.slice(10);
+    const {type: contactType, data: contactPubkey} = nip19.decode(contactNpub);
+    if (contactType === 'npub') {
+      subContactList(contactPubkey, onEvent);
+      view(path, {type: 'contacts', id: contactPubkey});
+    }
   } else if (path.length === 65) {
     const eventID = path.slice(1);
     subEventID(eventID, onEventDetails);
     view(path, {type: 'event', id: eventID});
   } else {
-    console.warn('no support for ', path)
+    console.warn('no support for ', path);
   }
 };
 
 // onload
 route(location.pathname);
+subOwnContacts(onEvent); // subscribe after route as routing unsubscribes current subs
 
 // only push a new entry if there is no history onload
 if (!history.length) {
@@ -286,8 +342,11 @@ const handleLink = (a: HTMLAnchorElement, e: MouseEvent) => {
   }
   if (
     href === '/'
+    || href.startsWith('/feed')
     || href.startsWith('/note')
     || href.startsWith('/npub')
+    || href.startsWith('/contacts/npub')
+    || (href.startsWith('/') && href.length === 65)
   ) {
     route(href);
     history.pushState({}, '', href);
@@ -306,17 +365,26 @@ const handleButton = (button: HTMLButtonElement) => {
     case 'back':
       closePublishView();
       return;
+    case 'import':
+      resetContactList(config.pubkey);
+      rerenderFeed();
+      subOwnContacts(onEvent);
+      subGlobalFeed(onEvent);
+      return;
   }
-  const id = (button.closest('[data-id]') as HTMLElement)?.dataset.id;
+  const id = button.dataset.id || (button.closest('[data-id]') as HTMLElement)?.dataset.id;
   if (id) {
     switch(button.name) {
       case 'reply':
         openWriteInput(button, id);
-        break;
+        return;
       case 'star':
-          const note = replyList.find(r => r.id === id) || textNoteList.find(n => n.id === (id));
-          note && handleUpvote(note);
-        break;
+        const note = replyList.find(r => r.id === id) || textNoteList.find(n => n.id === (id));
+        note && handleUpvote(note);
+        return;
+      case 'follow':
+        followContact(id);
+        return;
     }
   }
   // const container = e.target.closest('[data-append]');

src/profiles.ts

@@ -1,7 +1,7 @@
 import {Event} from 'nostr-tools';
 import {elem, elemCanvas, parseTextContent} from './utils/dom';
 import {getNoxyUrl} from './utils/url';
-import {getViewContent, getViewElem} from './view';
+import {getViewElem, getViewOptions} from './view';
 import {parseJSON} from './media';
 import {sortByCreatedAt} from './events';
 
@@ -37,7 +37,7 @@ const transformMetadata = (data: unknown): Profile | undefined => {
     name,
     ...(hasAboutString && {about: data.about as string}),
     ...(hasPictureString && {picture: data.picture as string}),
-    ...(hasWebsite && {hasWebsite: data.website as string})
+    ...(hasWebsite && {website: data.website as string})
   };
 };
 
@@ -87,10 +87,22 @@ export const handleMetadata = (evt: Event, relay: string) => {
         username.classList.add('mbox-kind0-name');
       });
   }
+  if (metadata.about) {
+    const about = getViewElem(`about-${evt.pubkey}`);
+    if (about) {
+      const view = getViewOptions();
+      about.replaceChildren(...parseTextContent(
+        view.type === 'contacts'
+          ? metadata.about.split('\n')[0]
+          : metadata.about
+      )[0]);
+    }
+  }
 };
 
 export const getMetadata = (pubkey: string) => {
   const user = profileMap[pubkey];
+  const about = user?.about;
   const name = user?.name;
   const userName = name || pubkey.slice(0, 8);
   // const userImg = user?.picture;
@@ -100,14 +112,13 @@ export const getMetadata = (pubkey: string) => {
     src: userImg,
     title: `${userName} on ${host} ${userAbout}`,
   }) : */ elemCanvas(pubkey);
-  return {img, name, userName};
+  return {about, img, name, userName};
 };
 
 export const renderProfile = (pubkey: string) => {
-  const content = getViewContent();
-  const header = getViewElem(pubkey);
+  const header = getViewElem('header');
   const metadata = profileMap[pubkey];
-  if (!content || !header || !metadata) {
+  if (!header || !metadata) {
     return;
   }
   if (metadata.name) {
@@ -119,11 +130,21 @@ export const renderProfile = (pubkey: string) => {
       header.append(elem('h1', {}, metadata.name));
     }
   }
-  if (metadata.about) {
-    const detail = getViewElem(`detail-${pubkey}`);
-    if (!detail.children.length) {
-      const [content] = parseTextContent(metadata.about);
-      detail?.append(...content);
+  console.log('render detail')
+  const detail = getViewElem(`detail-${pubkey}`);
+  if (metadata.about && !detail.children.length) {
+    const [content] = parseTextContent(metadata.about);
+    detail?.append(...content);
+  }
+  if (metadata.website) {
+    const website = detail.querySelector('[data-website]');
+    if (website) {
+      const url = metadata.website.toLowerCase().startsWith('http') ? metadata.website : `https://${metadata.website}`;
+      const [content] = parseTextContent(url);
+      website.replaceChildren(...content);
+      (website as HTMLDivElement).hidden = false;
+    } else {
+      detail.append(elem('div', {data: {website: ''}}, metadata.name));
     }
   }
 };

src/relays.ts

@@ -50,7 +50,7 @@ const subscribe = (
   });
   if (unsub) {
     sub.on('eose', () => {
-      console.log('eose', relay.url);
+      // console.log('eose', relay.url);
       unsubscribe(sub);
     });
   }
@@ -69,7 +69,7 @@ export const subOnce = (
   if (relay) {
     const sub = subscribe(obj.cb, obj.filter, relay);
     sub.on('eose', () => {
-      console.log('eose', obj.relay);
+      // console.log('eose', obj.relay);
       unsubscribe(sub);
     });
   }

src/styles/cards.css

@@ -19,6 +19,7 @@
   background-color: var(--bgcolor-textinput);
   border-radius: var(--profileimg-size);
   flex-basis: var(--profileimg-size);
+  flex-shrink: 0;
   height: var(--profileimg-size);
   margin-right: var(--gap-half);
   max-height: var(--profileimg-size);
@@ -49,9 +50,6 @@ a.mbox-img:focus {
   padding-bottom: var(--gap-half);
   word-break: break-word;
 }
-.mbox-content a {
-  text-decoration: underline;
-}
 .mbox-img + .mbox-body {
   --max-width: calc(100% - var(--profileimg-size) - var(--gap-half));
   flex-basis: var(--max-width);
@@ -60,33 +58,77 @@ a.mbox-img:focus {
 .mbox-replies .mbox-replies .mbox-img + .mbox-body {
   --max-width: calc(100% - var(--profileimg-size) + var(--gap-half));
 }
+.mbox-contact .mbox-img + .mbox-body {
+  --max-width: calc(100% - var(--profileimg-size) - var(--gap-half) - 90px);
+}
 
 .mbox-header {
-  align-items: start;
+  align-items: baseline;
   display: flex;
   gap: var(--gap-quarter);
   justify-content: space-between;
-  margin-top: 0;
+  margin: .1rem 0;
   min-height: 1.8rem;
 }
 .mbox-header a {
   font-size: var(--font-small);
+  line-height: var(--lineheight-small);
+  text-decoration: none;
 }
 .mbox-header small {
+  color: var(--color-accent);
   white-space: nowrap;
 }
 
 .mbox-username {
-  font-weight: 600;
 }
 .mbox-kind0-name {
   color: var(--color-accent);
 }
 
+.mbox-contact {
+  align-items: start; /* TODO: maybe all .mbox element should have align-items start */
+  flex-wrap: nowrap;
+  padding: var(--gap-half);
+}
+.mbox-contact .mbox-header {
+  justify-content: start;
+}
+.mbox-contact .mbox-body {
+  flex-basis: 100%;
+  flex-grow: 1;
+  flex-shrink: 1;
+  min-width: 0; /* with this mbox-content displays text on one line cutting off text-overflo... */
+  padding-bottom: 0;
+}
+.mbox-contact .mbox-content {
+  overflow: clip;
+  padding-right: var(--gap-quarter);
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.mbox-cta {
+  align-items: center;
+  align-self: center;
+  display: flex;
+  white-space: nowrap;
+}
+
+.mbox-updated-contact,
+.mbox-recommend-server {
+  padding-bottom: var(--gap-quarter);
+}
 .mbox-updated-contact .mbox-body,
 .mbox-recommend-server .mbox-body {
   display: block;
   font-size: var(--font-small);
+  padding-bottom: var(--gap-quarter);
+  padding-top: 0;
+}
+.mbox-updated-contact + .mbox-updated-contact,
+.mbox-recommend-server + .mbox-updated-contact {
+  padding-top: 0;
 }
 
 .mbox-updated-contact .mbox-header,

src/styles/error.css

@@ -5,6 +5,7 @@
   display: flex;
   flex-direction: column;
   left: 0;
+  max-width: 100vw;
   overflow: auto;
   padding: var(--gap);
   position: fixed;

src/styles/form.css

@@ -117,19 +117,39 @@ form .buttons,
 .buttons img,
 .buttons small,
 .buttons span {
+  font-weight: normal;
   vertical-align: middle;
 }
 
 button {
-  --bg-color: var(--bgcolor-accent);
-  --border-color: var(--bgcolor-accent);
-  background-color: var(--bg-color);
-  border: 0.2rem solid var(--border-color);
-  border-radius: .2rem;
+  background-color: transparent;
+  border: none;
   cursor: pointer;
+  font-weight: bold;
   outline-offset: 1px;
   word-break: normal;
 }
+button:active {
+  --bg-color: rgb(13, 74, 139);
+  --border-color: rgb(13, 74, 139);
+}
+
+.primary,
+.secondary {
+  border: 0.2rem solid var(--bgcolor-accent);
+  border-radius: .2rem;
+  padding: .9rem 2rem .7rem 2rem;
+}
+.primary {
+  background-color: var(--bgcolor-accent);
+}
+.secondary {
+  background-color: transparent;
+}
+.secondary:disabled {
+  border-color: var(--color-accent);
+  color: var(--color-accent);
+}
 
 button:focus {
 }

src/styles/main.css

@@ -16,6 +16,7 @@
   --focus-outline-width: 2px;
   --focus-outline: var(--focus-outline-width) var(--focus-outline-style) var(--focus-outline-color);
   --font-small: 1.2rem;
+  --lineheight-small: 1.5;
   --gap: 2.4rem;
   --gap-half: 1.2rem;
   --gap-quarter: .6rem;
@@ -41,12 +42,16 @@
 
 @media (prefers-color-scheme: light) {
   html {
-    --color: rgb(93, 93, 93);
-    --color-accent: rgb(130, 130, 130);
+    --color: rgb(43, 43, 43);
+    --color-accent: rgb(118, 118, 118);
+    --color-accent-line: rgb(163, 163, 163);
     --color-danger: #0e0e0e;
+    --color-visited: #7467c4;
+    --color-visited-line: #9083e3;
+    --color-inverse: #fff;
     --bgcolor: #fff;
     --bgcolor-nav: gainsboro;
-    --bgcolor-accent: #7badfc;
+    --bgcolor-accent: #5194ff;
     --bgcolor-danger: rgb(225, 40, 40);
     --bgcolor-danger-input: rgba(255 255 255 / .85);
     --bgcolor-inactive: #bababa;
@@ -56,15 +61,19 @@
 
 @media (prefers-color-scheme: dark) {
   html {
-    --color: #e3e3e3;
+    --color: #d9d9d9;
     --color-accent: #828282;
+    --color-accent-line: #737373;
     --color-danger: #e3e3e3;
+    --color-visited: #796ae3;
+    --color-visited-line: #5d4fce;
+    --color-inverse: #101010;
     --bgcolor: #101010;
     --bgcolor-nav: rgb(31, 22, 51);
-    --bgcolor-accent: rgb(16, 93, 176);
+    --bgcolor-accent: rgb(16, 77, 176);
     --bgcolor-danger: rgb(169, 0, 0);
     --bgcolor-danger-input: rgba(0 0 0 / .5);
-    --bgcolor-inactive: #202122;
+    --bgcolor-inactive: #353638;
     --bgcolor-textinput: #0e0e0e;
   }
 
@@ -92,14 +101,15 @@ body {
 @media (orientation: portrait) {
   body {
     font-size: 1.4rem;
-    line-height: 1.5;
+    line-height: 1.428571428571429;
   }
 }
 
 html, body {
-  min-height: 100%;
   height: 100%;
   margin: 0;
+  min-height: 100%;
+  overflow: clip;
 }
 
 h1, h2, h3, h4, h5 { font-weight: normal; }
@@ -133,16 +143,25 @@ img {
 
 a {
   color: var(--color-accent);
-  text-decoration: none;
+  text-decoration-color: var(--color-accent-line);
+  text-decoration-line: underline;
+  text-decoration-style: solid;
+  text-decoration-thickness: 2px;
+}
+
+a .highlight {
+  color: var(--color);
 }
 
-a:focus {
+a:focus,
+button:focus {
   border-radius: var(--focus-border-radius);
   outline: var(--focus-outline);
   outline-offset: 0;
 }
 a:visited {
-  color: #8377ce;
+  color: var(--color-visited);
+  text-decoration-color: var(--color-visited-line);
 }
 nav a:visited {
   color: inherit;
@@ -156,7 +175,7 @@ img[alt] {
 
 pre {
   margin: 0;
-  padding: .5rem 0;
+  padding: 0;
 }
 
 dl {
@@ -166,6 +185,7 @@ dl {
 }
 
 dt {
+  color: var(--color-accent);
   grid-column-start: 1;
 }
 

src/styles/view.css

@@ -24,14 +24,16 @@ aside {
 }
 
 nav {
+  align-items: center;
   background-color: var(--bgcolor-nav);
   display: flex;
   flex-direction: row;
   flex-grow: 1;
   flex-shrink: 0;
   justify-content: space-between;
+  min-height: 4.6rem;
   overflow-y: auto;
-  padding: 0 1.5rem;
+  padding: .2rem 1.5rem;
   user-select: none;
   -webkit-user-select: none;
 }
@@ -42,6 +44,7 @@ nav {
 }
 @media (orientation: landscape) {
   nav {
+    align-items: stretch;
     flex-direction: column;
     justify-content: space-between;
   }
@@ -51,6 +54,8 @@ nav button {
   --bgcolor-accent: transparent;
   --border-color: transparent;
   border-radius: 0;
+  color: inherit;
+  font-weight: bold;
   padding: 1rem;
 }
 @media (orientation: landscape) {
@@ -58,6 +63,17 @@ nav button {
   nav button {
     padding: 2rem 0;
   }
+  nav .spacer {
+    flex-grow: 1;
+  }
+  nav button:last-child {
+    margin-bottom: .4rem;
+  }
+}
+@media (orientation: portrait) {
+  nav .spacer {
+    display: none;
+  }
 }
 
 .view {
@@ -121,8 +137,6 @@ nav .content {
   justify-content: space-between;
 }
 nav a {
-  display: flex;
-  flex-direction: column;
   text-align: center;
   text-decoration: none;
 }
@@ -135,19 +149,36 @@ nav a {
   --extra-space: calc(var(--profileimg-size) + var(--gap-half));
   padding: var(--gap-half);
 }
-
-.hero h1 {
+.hero-title {
+  align-items: baseline;
+  display: flex;
+  flex-wrap: wrap;
+  gap: var(--gap-half);
+  justify-content: end;
+  max-width: var(--content-width);
+}
+.hero-title h1 {
+  flex-grow: 1;
+  font-size: 2.1rem;
+  line-height: 1.285714285714286;
+  margin-bottom: 0;
+  margin-top: 2rem;
   padding-left: var(--extra-space);
 }
+.hero-title button {
+  line-height: 1;
+}
 
 .hero p {
+  max-width: calc(var(--content-width) - var(--extra-space));
   padding-left: var(--extra-space);
 }
 
-.hero small {
+.hero .hero-npub {
   color: var(--color-accent);
-  font-size: 1.1rem;
   display: block;
+  font-size: 1.1rem;
+  line-height: 1.36363636;
   max-width: 100%;
   overflow: clip;
   text-align: center;
@@ -155,7 +186,7 @@ nav a {
   white-space: nowrap;
 }
 @media (min-width: 54ch) {
-  .hero small {
+  .hero .hero-npub {
     padding-left: var(--extra-space);
     text-align: left;
   }
@@ -164,3 +195,7 @@ nav a {
 .hero footer {
   padding-left: var(--extra-space);
 }
+
+.hero footer a {
+  text-decoration: none;
+}

src/subscriptions.ts

@@ -1,5 +1,5 @@
 import {Event} from 'nostr-tools';
-import {getReplyTo, hasEventTag, isMention} from './events';
+import {getReplyTo, hasEventTag, isMention, isPTag} from './events';
 import {config} from './settings';
 import {sub, subOnce, unsubAll} from './relays';
 
@@ -8,8 +8,58 @@ type SubCallback = (
   relay: string,
 ) => void;
 
+export const subPubkeys = (
+  pubkeys: string[],
+  onEvent: SubCallback,
+) => {
+  const authorsPrefixes = pubkeys.map(pubkey => pubkey.slice(0, 32));
+  console.info(`subscribe to homefeed ${authorsPrefixes}`);
+  unsubAll();
+
+  const repliesTo = new Set<string>();
+  sub({
+    cb: (evt, relay) => {
+      if (
+        evt.tags.some(hasEventTag)
+        && !evt.tags.some(isMention)
+      ) {
+        const note = getReplyTo(evt); // get all reply to events instead?
+        if (note && !repliesTo.has(note)) {
+          repliesTo.add(note);
+          subOnce({
+            cb: onEvent,
+            filter: {
+              ids: [note],
+              kinds: [1],
+              limit: 1,
+            },
+            relay,
+          });
+        }
+      }
+      onEvent(evt, relay);
+    },
+    filter: {
+      authors: authorsPrefixes,
+      kinds: [1],
+      limit: 20,
+    },
+  });
+  // get metadata
+  sub({
+    cb: onEvent,
+    filter: {
+      authors: pubkeys,
+      kinds: [0],
+      limit: pubkeys.length,
+    },
+    unsub: true,
+  });
+};
+
 /** subscribe to global feed */
-export const sub24hFeed = (onEvent: SubCallback) => {
+export const subGlobalFeed = (onEvent: SubCallback) => {
+  console.info('subscribe to global feed');
   unsubAll();
   const now = Math.floor(Date.now() * 0.001);
   const pubkeys = new Set<string>();
@@ -132,15 +182,17 @@ export const subNote = (
     });
   };
 
-  replies.add(eventId)
-  sub({
-    cb: onReply,
-    filter: {
-      '#e': [eventId],
-      kinds: [1, 7],
-    },
-    unsub: true,
-  });
+  replies.add(eventId);
+  setTimeout(() => {
+    sub({
+      cb: onReply,
+      filter: {
+        '#e': [eventId],
+        kinds: [1, 7],
+      },
+      unsub: true, // TODO: probably keep this subscription also after onReply/unsubAll
+    });
+  }, 200);
 };
 
 /** subscribe to npub key (nip-19) */
@@ -194,9 +246,9 @@ export const subProfile = (
     sub({
       cb: onEvent,
       filter: {
-        authors: [pubkey],
+        authors: [pubkey, config.pubkey],
         kinds: [3],
-        limit: 3,
+        limit: 6,
       },
     });
   }, 100);
@@ -206,11 +258,71 @@ export const subEventID = (
   id: string,
   onEvent: SubCallback,
 ) => {
+  unsubAll();
   sub({
     cb: onEvent,
     filter: {
       ids: [id],
       limit: 1,
     },
+    unsub: true,
+  });
+  sub({
+    cb: onEvent,
+    filter: {
+      authors: [id],
+      limit: 200,
+    },
+    unsub: true,
+  });
+};
+
+export const subOwnContacts = (onEvent: SubCallback) => {
+  sub({
+    cb: onEvent,
+    filter: {
+      authors: [config.pubkey],
+      kinds: [3],
+      limit: 1,
+    },
+    unsub: true,
+  });
+};
+
+export const subContactList = (
+  pubkey: string,
+  onEvent: SubCallback,
+) => {
+  unsubAll();
+  const pubkeys = new Set<string>();
+  let newestEvent = 0;
+  sub({
+    cb: (evt: Event, relay: string) => {
+      if (evt.created_at <= newestEvent) {
+        return;
+      }
+      newestEvent = evt.created_at;
+      const newPubkeys = evt.tags
+        .filter(isPTag)
+        .filter(([, p]) => !pubkeys.has(p))
+        .map(([, p]) => {
+          pubkeys.add(p);
+          return p
+        });
+      subOnce({
+        cb: onEvent,
+        filter: {
+          authors: newPubkeys,
+          kinds: [0],
+        },
+        relay,
+      });
+      onEvent(evt, relay);
+    },
+    filter: {
+      authors: [pubkey],
+      kinds: [3],
+      limit: 1,
+    },
   });
 };

src/system.ts

@@ -88,7 +88,7 @@ export const powEvent = (
   statusElem.replaceChildren('working…', cancelBtn);
   statusElem.hidden = false;
   return new Promise((resolve, reject) => {
-    const worker = new Worker('./worker.js');
+    const worker = new Worker('/worker.js');
 
     const onCancel = () => {
       worker.terminate();

src/template.ts

@@ -7,13 +7,18 @@ export type DOMMap = {
 };
 
 export type ViewTemplateOptions = {
-  type: 'feed'
+  type: 'home';
+} | {
+  type: 'feed';
 } | {
   type: 'note';
   id: string;
 } | {
   type: 'profile';
   id: string;
+} | {
+  type: 'contacts';
+  id: string;
 } | {
   type: 'event';
   id: string;
@@ -23,33 +28,52 @@ export const renderViewTemplate = (options: ViewTemplateOptions) => {
   const content = elem('div', {className: 'content'});
   const dom: DOMMap = {};
   switch (options.type) {
+    case 'home':
+      break;
+    case 'feed':
+      break;
     case 'profile':
       const pubkey = options.id;
-      const detail = elem('p', {data: {'profileDetails': pubkey}});
-      dom[`detail-${pubkey}`] = detail;
-      const header = elem('header', {className: 'hero'}, [
-        elem('small', {}, nip19.npubEncode(pubkey)),
-        elem('h1', {}, pubkey),
+      const npub = nip19.npubEncode(pubkey);
+      const about = elem('span');
+      const detail = elem('p', {}, about);
+      const followStatus = elem('small');
+      const followBtn = elem('button', {
+        className: 'primary',
+        name: 'follow',
+        data: {'id': options.id}
+      }, 'follow');
+      const following = elem('span');
+      const profileHeader = elem('header', {className: 'hero'}, [
+        elem('small', {className: 'hero-npub'}, npub),
+        elem('div', {className: 'hero-title'}, [
+          elem('h1', {}, pubkey),
+          followStatus,
+          followBtn,
+        ]),
         detail,
-        elem('footer', {}, [
-          elem('span', {data:{following: pubkey}})
-        ])
+        elem('footer', {}, following),
       ]);
-      dom[pubkey] = header;
-      content.append(header);
+      dom.header = profileHeader;
+      dom[`about-${pubkey}`] = about;
+      dom[`detail-${pubkey}`] = detail;
+      dom.following = following;
+      dom[`followStatus-${pubkey}`] = followStatus;
+      dom[`followBtn-${pubkey}`] = followBtn;
+      content.append(profileHeader);
       document.title = pubkey;
       break;
     case 'note':
       break;
-    case 'feed':
+    case 'contacts':
       break;
     case 'event':
       const id = options.id;
-      const eventHeader = elem('header', {className: 'hero'}, [
-        elem('h1', {}, id),
-      ]);
-      dom[id] = eventHeader;
-      content.append(eventHeader);
+      content.append(
+        elem('header', {className: 'hero'}, [
+          elem('h1', {}, id),
+        ])
+      );
       document.title = id;
       break;
   }

src/ui.ts

@@ -2,14 +2,15 @@ import {Event, nip19} from  'nostr-tools';
 import {Children, elem, elemArticle, parseTextContent} from './utils/dom';
 import {dateTime, formatTime} from './utils/time';
 import {/*validatePow,*/ sortByCreatedAt} from './events';
-import {setViewElem} from './view';
+import {getViewElem, getViewOptions, setViewElem} from './view';
 import {config} from './settings';
 import {getReactions, getReactionContents} from './reactions';
 import {openWriteInput} from './write';
 // import {linkPreview} from './media';
+import {parseJSON} from './media';
 import {getMetadata} from './profiles';
 import {EventWithNip19, replyList} from './notes';
-import {parseJSON} from './media';
+import {isFollowing} from './contacts';
 
 setInterval(() => {
   document.querySelectorAll('time[datetime]').forEach((timeElem: HTMLTimeElement) => {
@@ -100,8 +101,6 @@ export const renderUpdateContact = (
         ' ',
         elem('span', {data: {contacts: evt.id}, title: time.toISOString()}, evt.content),
       ]),
-      elem('div', {className: 'mbox-content'}, [
-      ]),
     ]),
   ], {
       className: 'mbox-updated-contact',
@@ -131,18 +130,17 @@ export const renderRecommendServer = (evt: Event, relay: string) => {
 
 export const renderEventDetails = (evt: Event, relay: string) => {
   const {img, name, userName} = getMetadata(evt.pubkey);
-  const time = new Date(evt.created_at * 1000);
   const npub = nip19.npubEncode(evt.pubkey);
 
-  let content = parseJSON(evt.content)
+  let content = (![1, 7].includes(evt.kind) && evt.content !== '') ? parseJSON(evt.content) : (evt.content || '<empty>');
   switch (typeof content) {
     case 'object':
       content = JSON.stringify(content, null, 2);
       break;
     default:
-      content = `${evt.content}`;
+      content = `${content}`;
   }
-  const body = elem('div', {className: 'mbox-body', title: dateTime.format(time)}, [
+  const body = elem('div', {className: 'mbox-body'}, [
     elem('header', {className: 'mbox-header'}, [
       elem('a', {
         className: `mbox-username${name ? ' mbox-kind0-name' : ''}`,
@@ -178,7 +176,50 @@ export const renderEventDetails = (evt: Event, relay: string) => {
     elem('a', {className: 'mbox-img', href: `/${npub}`, tabIndex: -1}, img),
     body,
   ], {
-    className: 'mbox-recommend-server',
+    className: 'mbox-plain-event',
     data: {kind: evt.kind, id: evt.id, pubkey: evt.pubkey}
   });
 };
+
+export const createContact = (pubkey: string) => {
+  const {about: aboutContent, img, name, userName} = getMetadata(pubkey);
+  const npub = nip19.npubEncode(pubkey);
+  const view = getViewOptions();
+  if (view.type !== 'contacts') {
+    return null;
+  }
+  const isMe = config.pubkey === pubkey;
+  const isCurrentUser = view.id === pubkey;
+  const hasContact = isFollowing(pubkey);
+  const followStatus = elem('small');
+  const followBtn = elem('button', {
+      className: hasContact ? 'secondary' : 'primary',
+      ...(isMe && {disabled: true}),
+      name: 'follow',
+      data: {id: pubkey}
+    }, hasContact ? (isMe ? 'following' : 'unfollow') : 'follow');
+  const about = elem('div', {className: 'mbox-content'}, aboutContent);
+  setViewElem(`about-${pubkey}`, about);
+  setViewElem(`followStatus-${pubkey}`, followStatus);
+  setViewElem(`followBtn-${pubkey}`, followBtn);
+  return elemArticle([
+    elem('a', {className: 'mbox-img', href: `/${npub}`, tabIndex: -1}, img),
+    elem('div', {className: 'mbox-body'}, [
+      elem('header', {className: 'mbox-header'}, [
+        elem('a', {
+          className: `mbox-username${name ? ' mbox-kind0-name' : ''}`,
+          data: {profile: pubkey},
+          href: `/${npub}`,
+        }, name || userName),
+        (isMe || isCurrentUser)
+          ? elem('small', {}, isMe ? '(your user)' : '(current user)')
+           : null,
+      ]),
+      about,
+    ]),
+    elem('div', {className: 'mbox-cta'}, [followStatus, followBtn]),
+  ], {
+    className: 'mbox-contact',
+    data: {pubkey},
+  });
+};

src/utils/dom.ts

@@ -104,11 +104,12 @@ export const parseTextContent = (
             return elem('a', {href: `/${npub}`, data: {profile: data}}, data.slice(6, 15))
           }
         }
-        if (!word.match(/^(https?:\/\/|www\.)\S*/)) {
+        const WORD = word.toUpperCase();
+        if (!WORD.match(/^(HTTPS?:\/\/|WWW\.)\S*/)) {
           return word;
         }
         try {
-          if (!word.startsWith('http')) {
+          if (!WORD.startsWith('HTTP')) {
             word = 'https://' + word;
           }
           const url = new URL(word);
@@ -116,11 +117,12 @@ export const parseTextContent = (
             return word;
           }
           firstLink = firstLink || url.href;
+          const prettierWithoutSlash = url.pathname === '/';
           return elem('a', {
             href: url.href,
             target: '_blank',
             rel: 'noopener noreferrer'
-          }, url.href.slice(url.protocol.length + 2));
+          }, url.href.slice(url.protocol.length + 2, prettierWithoutSlash ? -1 : undefined));
         } catch (err) {
           return word;
         }

src/view.ts

@@ -60,8 +60,8 @@ type GetViewOptions = () => ViewTemplateOptions;
 
 /**
  * get options for current view
- * @returns {id: 'feed' | 'profile' | 'note' | 'event', id?: string}
- */
+ * @returns {id: 'home' | 'feed' | 'profile' | 'note' | 'contacts' | 'event', id?: string}
+*/
 export const getViewOptions: GetViewOptions = () => containers[activeContainerIndex]?.options || {type: 'feed'};
 
 /**