Exposing fetch to functions and initial work on Electron

plugs/tasks/task.ts

@@ -3,16 +3,19 @@ import type { ClickEvent, IndexTreeEvent } from "../../webapp/app_event";
 import { batchSet, scanPrefixGlobal } from "plugos-silverbullet-syscall/index";
 import { readPage, writePage } from "plugos-silverbullet-syscall/space";
 import { parseMarkdown } from "plugos-silverbullet-syscall/markdown";
-import { dispatch, getCurrentPage, getText } from "plugos-silverbullet-syscall/editor";
+import { dispatch, filterBox, getCursor, getText } from "plugos-silverbullet-syscall/editor";
 import {
   addParentPointers,
   collectNodesMatching,
   collectNodesOfType,
+  findNodeOfType,
   nodeAtPos,
+  ParseTree,
   renderToText
 } from "../../common/tree";
 import { removeQueries } from "../query/util";
 import { applyQuery, QueryProviderEvent } from "../query/engine";
+import { niceDate } from "../core/dates";
 
 export type Task = {
   name: string;
@@ -24,6 +27,10 @@ export type Task = {
   page?: string;
 };
 
+function getDeadline(deadlineNode: ParseTree): string {
+  return deadlineNode.children![0].text!.replace(/📅\s*/, "");
+}
+
 export async function indexTasks({ name, tree }: IndexTreeEvent) {
   // console.log("Indexing tasks");
   let tasks: { key: string; value: Task }[] = [];
@@ -36,9 +43,9 @@ export async function indexTasks({ name, tree }: IndexTreeEvent) {
       done: complete,
     };
 
-    let deadlineNodes = collectNodesOfType(n, "DeadlineDate");
-    if (deadlineNodes.length > 0) {
-      value.deadline = deadlineNodes[0].children![0].text!.replace(/📅\s*/, "");
+    let deadlineNode = findNodeOfType(n, "DeadlineDate");
+    if (deadlineNode) {
+      value.deadline = getDeadline(deadlineNode);
     }
 
     let taskIndex = n.parent!.children!.indexOf(n);
@@ -61,65 +68,120 @@ export async function taskToggle(event: ClickEvent) {
   return taskToggleAtPos(event.pos);
 }
 
+async function toggleTaskMarker(node: ParseTree, moveToPos: number) {
+  let changeTo = "[x]";
+  if (node.children![0].text === "[x]" || node.children![0].text === "[X]") {
+    changeTo = "[ ]";
+  }
+  await dispatch({
+    changes: {
+      from: node.from,
+      to: node.to,
+      insert: changeTo,
+    },
+    selection: {
+      anchor: moveToPos,
+    },
+  });
+
+  let parentWikiLinks = collectNodesMatching(
+    node.parent!,
+    (n) => n.type === "WikiLinkPage"
+  );
+  for (let wikiLink of parentWikiLinks) {
+    let ref = wikiLink.children![0].text!;
+    if (ref.includes("@")) {
+      let [page, pos] = ref.split("@");
+      let text = (await readPage(page)).text;
+
+      let referenceMdTree = await parseMarkdown(text);
+      // Adding +1 to immediately hit the task marker
+      let taskMarkerNode = nodeAtPos(referenceMdTree, +pos + 1);
+
+      if (!taskMarkerNode || taskMarkerNode.type !== "TaskMarker") {
+        console.error(
+          "Reference not a task marker, out of date?",
+          taskMarkerNode
+        );
+        return;
+      }
+      taskMarkerNode.children![0].text = changeTo;
+      text = renderToText(referenceMdTree);
+      console.log("Updated reference paged text", text);
+      await writePage(page, text);
+    }
+  }
+}
+
 export async function taskToggleAtPos(pos: number) {
-  let currentpage = await getCurrentPage();
   let text = await getText();
   let mdTree = await parseMarkdown(text);
   addParentPointers(mdTree);
 
   let node = nodeAtPos(mdTree, pos);
   if (node && node.type === "TaskMarker") {
-    let changeTo = "[x]";
-    if (node.children![0].text === "[x]" || node.children![0].text === "[X]") {
-      changeTo = "[ ]";
-    }
-    await dispatch({
-      changes: {
-        from: node.from,
-        to: node.to,
-        insert: changeTo,
-      },
-      selection: {
-        anchor: pos,
-      },
-    });
-
-    let parentWikiLinks = collectNodesMatching(
-      node.parent!,
-      (n) => n.type === "WikiLinkPage"
-    );
-    for (let wikiLink of parentWikiLinks) {
-      let ref = wikiLink.children![0].text!;
-      if (ref.includes("@")) {
-        let [page, pos] = ref.split("@");
-        if (page !== currentpage) {
-          text = (await readPage(page)).text;
-        }
-
-        let referenceMdTree = await parseMarkdown(text);
-        // Adding +1 to immediately hit the task marker
-        let taskMarkerNode = nodeAtPos(referenceMdTree, +pos + 1);
-
-        if (!taskMarkerNode || taskMarkerNode.type !== "TaskMarker") {
-          console.error(
-            "Reference not a task marker, out of date?",
-            taskMarkerNode
-          );
-          return;
-        }
-        taskMarkerNode.children![0].text = changeTo;
-        console.log(
-          "This will be the new marker",
-          renderToText(taskMarkerNode)
-        );
-        text = renderToText(referenceMdTree);
-        console.log("Updated reference paged text", text);
-        await writePage(page, text);
-      }
-    }
+    await toggleTaskMarker(node, pos);
   }
 }
 
+export async function taskToggleCommand() {
+  let text = await getText();
+  let pos = await getCursor();
+  let tree = await parseMarkdown(text);
+  addParentPointers(tree);
+
+  let node = nodeAtPos(tree, pos);
+  // We kwow node.type === Task (due to the task context)
+  let taskMarker = findNodeOfType(node!, "TaskMarker");
+  await toggleTaskMarker(taskMarker!, pos);
+}
+
+export async function postponeCommand() {
+  let text = await getText();
+  let pos = await getCursor();
+  let tree = await parseMarkdown(text);
+  addParentPointers(tree);
+
+  let node = nodeAtPos(tree, pos)!;
+  // We kwow node.type === DeadlineDate (due to the task context)
+  let date = getDeadline(node);
+  let option = await filterBox(
+    "Postpone for...",
+    [
+      { name: "a day", orderId: 1 },
+      { name: "a week", orderId: 2 },
+      { name: "following Monday", orderId: 3 },
+    ],
+    "Select the desired time span to delay this task"
+  );
+  if (!option) {
+    return;
+  }
+  let d = new Date(date);
+  switch (option.name) {
+    case "a day":
+      d.setDate(d.getDate() + 1);
+      break;
+    case "a week":
+      d.setDate(d.getDate() + 7);
+      break;
+    case "following Monday":
+      d.setDate(d.getDate() + ((7 - d.getDay() + 1) % 7 || 7));
+      break;
+  }
+  await dispatch({
+    changes: {
+      from: node.from,
+      to: node.to,
+      insert: `📅 ${niceDate(d)}`,
+    },
+    selection: {
+      anchor: pos,
+    },
+  });
+  // await toggleTaskMarker(taskMarker!, pos);
+}
+
 export async function queryProvider({
   query,
 }: QueryProviderEvent): Promise<string> {