poder elegir a que página linkear

src/components/Modal.svelte

@@ -0,0 +1,137 @@
+<script lang="ts">
+  export let onClose: () => void;
+
+  function click(event: Event) {
+    if (event.target !== this) return;
+    onClose();
+  }
+  function keydown(event: KeyboardEvent) {
+    if (event.key === "Escape") onClose();
+  }
+</script>
+
+<div
+  class="modal"
+  aria-labelledby="modal-title"
+  role="dialog"
+  aria-modal="true"
+  on:click={click}
+  on:keydown={keydown}
+>
+  <div class="backdrop" />
+
+  <div class="content-alignment" on:click={click} on:keydown={keydown}>
+    <div class="content">
+      <h3 id="modal-title">
+        <slot name="title" />
+      </h3>
+      <slot />
+      <!--<div
+      class="flex min-h-full items-end justify-center p-4 text-center sm:items-center sm:p-0"
+    >
+      <!--
+        Modal panel, show/hide based on modal state.
+
+        Entering: "ease-out duration-300"
+          From: "opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
+          To: "opacity-100 translate-y-0 sm:scale-100"
+        Leaving: "ease-in duration-200"
+          From: "opacity-100 translate-y-0 sm:scale-100"
+          To: "opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
+      --!>
+      <div
+        class="relative transform overflow-hidden rounded-lg bg-white text-left shadow-xl transition-all sm:my-8 sm:w-full sm:max-w-lg"
+      >
+        <div class="bg-white px-4 pt-5 pb-4 sm:p-6 sm:pb-4">
+          <div class="sm:flex sm:items-start">
+            <div
+              class="mx-auto flex h-12 w-12 flex-shrink-0 items-center justify-center rounded-full bg-red-100 sm:mx-0 sm:h-10 sm:w-10"
+            >
+              <svg
+                class="h-6 w-6 text-red-600"
+                fill="none"
+                viewBox="0 0 24 24"
+                stroke-width="1.5"
+                stroke="currentColor"
+                aria-hidden="true"
+              >
+                <path
+                  stroke-linecap="round"
+                  stroke-linejoin="round"
+                  d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126zM12 15.75h.007v.008H12v-.008z"
+                />
+              </svg>
+            </div>
+            <div class="mt-3 text-center sm:mt-0 sm:ml-4 sm:text-left">
+              <h3
+                class="text-base font-semibold leading-6 text-gray-900"
+                id="modal-title"
+              >
+                Deactivate account
+              </h3>
+              <div class="mt-2">
+                <p class="text-sm text-gray-500">
+                  Are you sure you want to deactivate your account? All of your
+                  data will be permanently removed. This action cannot be
+                  undone.
+                </p>
+              </div>
+            </div>
+          </div>
+        </div>
+        <div class="bg-gray-50 px-4 py-3 sm:flex sm:flex-row-reverse sm:px-6">
+          <button
+            type="button"
+            class="inline-flex w-full justify-center rounded-md bg-red-600 px-3 py-2 text-sm font-semibold text-white shadow-sm hover:bg-red-500 sm:ml-3 sm:w-auto"
+            >Deactivate</button
+          >
+          <button
+            type="button"
+            class="mt-3 inline-flex w-full justify-center rounded-md bg-white px-3 py-2 text-sm font-semibold text-gray-900 shadow-sm ring-1 ring-inset ring-gray-300 hover:bg-gray-50 sm:mt-0 sm:w-auto"
+            >Cancel</button
+          >
+        </div>
+      </div>
+    </div>-->
+    </div>
+  </div>
+</div>
+
+<style>
+  .modal {
+    position: relative;
+    z-index: 169;
+  }
+
+  .backdrop {
+    position: fixed;
+    inset: 0;
+    background: #6b7280;
+    opacity: 0.75;
+  }
+
+  .content-alignment {
+    display: flex;
+    min-height: 100vh;
+    position: fixed;
+    inset: 0;
+    z-index: 269;
+    align-items: center;
+    justify-content: center;
+    overflow-y: auto;
+  }
+
+  .content {
+    overflow-y: none;
+    background: white;
+    padding: 16px 20px;
+    border-radius: 16px;
+    min-width: 50%;
+    min-height: 50%;
+  }
+
+  h3 {
+    margin: 0;
+    margin-bottom: 12px;
+  }
+</style>

src/components/PagePicker.svelte

@@ -0,0 +1,64 @@
+<script lang="ts">
+  import type { Readable } from "svelte/store";
+  import { yDocToProsemirrorJSON } from "y-prosemirror";
+  import { Node } from "prosemirror-model";
+  import type { Doc } from "yjs";
+  import { schema } from "../editor/schema";
+  import { makeYdocStore } from "../lib/makeYdocStore";
+  import { lastUpdated } from "../lib/lastUpdated";
+
+  type Entry = {
+    id: string;
+    name: string;
+    title?: string;
+  };
+
+  function getDocs(ydoc: Doc): Entry[] {
+    let docs: Entry[] = [];
+    for (const name of ydoc.share.keys()) {
+      if (name.startsWith("page/")) {
+        const json = yDocToProsemirrorJSON(ydoc, name);
+        const node = Node.fromJSON(schema, json);
+        let titleNode: null | Node = null;
+        node.descendants((node) => {
+          if (titleNode) return false;
+          if (node.type.name === "heading" && node.attrs.level === 1) {
+            titleNode = node;
+            return false;
+          }
+        });
+        docs.push({
+          title: titleNode?.textContent,
+          id: name.replace(/^page\//, ""),
+          name,
+        });
+      }
+    }
+    return docs;
+  }
+
+  let filter: string = "";
+
+  export let onChoose: (id: string) => void;
+  export let ydoc: Doc;
+  $: entries = deriveEntries(ydoc);
+  $: lastU = lastUpdated(ydoc);
+  $: sortedEntries = $entries
+    .sort((a, b) => +$lastU.get(b.name) - +$lastU.get(a.name))
+    // TODO: FTS
+    .filter((x) => (x.title ?? x.id).includes(filter));
+  // $: console.debug($lastU);
+
+  const deriveEntries = makeYdocStore((_, __, ydoc) => getDocs(ydoc));
+</script>
+
+<input type="text" bind:value={filter} placeholder="Buscar..." autofocus />
+<ul>
+  {#each sortedEntries as entry}
+    <li>
+      <button type="button" on:click={() => onChoose(entry.id)}
+        >{entry.title ?? entry.id}</button
+      >
+    </li>
+  {/each}
+</ul>

src/editor/BubbleMenu.svelte

@@ -21,9 +21,13 @@
   import SimpleMarkItem from "./bubblemenu/SimpleMarkItem.svelte";
   import { nanoid } from "nanoid";
   import Button from "./bubblemenu/Button.svelte";
+  import Modal from "../components/Modal.svelte";
+  import PagePicker from "../components/PagePicker.svelte";
+  import type { WorldY } from "../lib/doc";
 
   export let view: EditorView;
   export let state: EditorState;
+  export let worldY: WorldY;
 
   let changingProp:
     | false
@@ -83,11 +87,17 @@
     runCommand(updateMark(view.state.schema.marks.link, { href: url }));
   }
 
-  function createInternalLink() {
-    const pageId = nanoid();
-    runCommand(
-      updateMark(view.state.schema.marks.internal_link, { id: pageId })
-    );
+  let makingInternalLink = false;
+  function startMakingInternalLink() {
+    if (markIsActive(state, view.state.schema.marks.internal_link)) {
+      runCommand(removeMark(view.state.schema.marks.internal_link));
+    } else {
+      makingInternalLink = true;
+    }
+  }
+  function makeInternalLink(id: string) {
+    runCommand(updateMark(view.state.schema.marks.internal_link, { id }));
+    makingInternalLink = false;
   }
 
   const svgStyle = "width: 100%; height: 100%";
@@ -117,6 +127,13 @@ transform: scale(${1 / viewport.scale});
   });
 </script>
 
+{#if makingInternalLink}
+  <Modal onClose={() => (makingInternalLink = false)}>
+    <svelte:fragment slot="title">Elegir página</svelte:fragment>
+    <PagePicker ydoc={worldY.ydoc} onChoose={makeInternalLink} />
+  </Modal>
+{/if}
+
 <div class="bubble" hidden={state.selection.empty} style={barStyle}>
   {#if changingProp === false}
     <SimpleMarkItem {view} {state} type={view.state.schema.marks.strong}
@@ -137,7 +154,8 @@ transform: scale(${1 / viewport.scale});
     >
     <Button
       active={markIsActive(state, view.state.schema.marks.internal_link)}
-      onClick={createInternalLink}><InternalLinkIcon style={svgStyle} /></Button
+      onClick={startMakingInternalLink}
+      ><InternalLinkIcon style={svgStyle} /></Button
     >
   {:else if changingProp.type === "link"}
     <input

src/editor/Editor.svelte

@@ -72,7 +72,7 @@
   <!-- this element gets replaced with the editor itself when mounted -->
   <div bind:this={wrapperEl} />
   {#if view}
-    <BubbleMenu {view} state={updatedState} />
+    <BubbleMenu {view} {worldY} state={updatedState} />
   {/if}
 </div>
 

src/lib/lastUpdated.ts

@@ -0,0 +1,29 @@
+import type { AbstractType, Doc } from "yjs";
+import { makeYdocStore } from "./makeYdocStore.js";
+
+// XXX: si hay problemas de perf, mirar acá..
+// después de implementar esto me di cuenta que simplemente puedo fijarme en
+// cuales fueron las últimas páginas a las que se entró, y probablemente sería más útil.
+
+export function lastUpdated(ydoc: Doc) {
+  let map: Map<string, Date> = new Map();
+  let observers: Set<{ y: AbstractType<any>; observer: () => void }> =
+    new Set();
+  return makeYdocStore(
+    (_, __, ydoc) => {
+      for (const name of ydoc.share.keys()) {
+        if (name.startsWith("page/")) {
+          if (!map.get(name)) {
+            map.set(name, new Date());
+            const y = ydoc.getXmlFragment(name);
+            const observer = () => map.set(name, new Date());
+            observers.add({ y, observer });
+            y.observeDeep(observer);
+          }
+        }
+      }
+      return map;
+    },
+    () => observers.forEach(({ y, observer }) => y.unobserveDeep(observer))
+  )(ydoc);
+}

src/lib/makeYdocStore.ts

@@ -0,0 +1,29 @@
+import type { Readable } from "svelte/store";
+import type { Doc, Transaction } from "yjs";
+
+export function makeYdocStore<T>(
+  handler: (update: Uint8Array, origin: any, ydoc: Doc, tr: Transaction) => T,
+  unhandler?: () => void
+) {
+  return (ydoc: Doc): Readable<T> => {
+    // thanks https://github.com/relm-us/svelt-yjs/blob/main/src/types/array.ts
+    return {
+      subscribe: (run) => {
+        function updateHandler(
+          update: Uint8Array,
+          origin: any,
+          ydoc: Doc,
+          tr: Transaction
+        ) {
+          run(handler(update, origin, ydoc, tr));
+        }
+        ydoc.on("update", updateHandler);
+        updateHandler(null, null, ydoc, null);
+        return () => {
+          if (unhandler) unhandler();
+          ydoc.off("update", updateHandler);
+        };
+      },
+    };
+  };
+}

src/views/Page.svelte

@@ -19,10 +19,19 @@
       throw new Error("No conozco ese mundo.");
     }
     const worldY = getWorldY(worldIdentifier);
+
     return { worldY, doc: getWorldPage(worldY.ydoc, pageId) };
   }
 
-  $: docPromise = loadDoc(worldId, pageId);
+  let state: "loading" | { worldY: WorldY; doc: XmlFragment } | { error: any };
+  $: {
+    state = "loading";
+    loadDoc(worldId, pageId)
+      .then((doc) => {
+        state = doc;
+      })
+      .catch((error) => (state = { error }));
+  }
 </script>
 
 <nav>
@@ -38,12 +47,13 @@
     </ul>
   </details>
 </nav>
-{#await docPromise then doc}
-  <Editor doc={doc.doc} worldY={doc.worldY} />
-{:catch error}
-  {error}
+
+{#if state === "loading"}Cargando...{:else if "doc" in state}
+  <Editor doc={state.doc} worldY={state.worldY} />
+{:else if "error" in state}
+  {state.error}
   <a href={routes.ChooseWorld}>Volver al inicio</a>
-{/await}
+{/if}
 
 <style>
   nav a {