#125, basic infrastructure for scripts attached to notes via relations

src/public/javascripts/services/bundle.js

@@ -1,8 +1,14 @@
 import ScriptContext from "./script_context.js";
 import server from "./server.js";
 
-async function executeBundle(bundle) {
+async function getAndExecuteBundle(noteId, targetNote = null) {
-    const apiContext = ScriptContext(bundle.note, bundle.allNotes);
+    const bundle = await server.get('script/bundle/' + noteId);
+
+    await executeBundle(bundle, targetNote);
+}
+
+async function executeBundle(bundle, targetNote) {
+    const apiContext = ScriptContext(bundle.note, bundle.allNotes, targetNote);
 
     return await (function () {
         return eval(`const apiContext = this; (async function() { ${bundle.script}\r\n})()`);
@@ -19,5 +25,6 @@ async function executeStartupBundles() {
 
 export default {
     executeBundle,
+    getAndExecuteBundle,
     executeStartupBundles
 }

src/public/javascripts/services/note_detail.js

@@ -15,6 +15,7 @@ import noteDetailText from './note_detail_text.js';
 import noteDetailFile from './note_detail_file.js';
 import noteDetailSearch from './note_detail_search.js';
 import noteDetailRender from './note_detail_render.js';
+import bundleService from "./bundle.js";
 
 const $noteTitle = $("#note-title");
 
@@ -30,6 +31,7 @@ const $labelListInner = $("#label-list-inner");
 const $relationList = $("#relation-list");
 const $relationListInner = $("#relation-list-inner");
 const $childrenOverview = $("#children-overview");
+const $scriptArea = $("#note-detail-script-area");
 
 let currentNote = null;
 
@@ -144,6 +146,8 @@ async function handleProtectedSession() {
 }
 
 async function loadNoteDetail(noteId) {
+    $scriptArea.html('');
+
     currentNote = await loadNote(noteId);
 
     if (isNewNoteCreated) {
@@ -183,10 +187,15 @@ async function loadNoteDetail(noteId) {
 
     const labels = await loadLabelList();
 
-    loadRelationList(); // no need to wait
-
     const hideChildrenOverview = labels.some(label => label.name === 'hideChildrenOverview');
     await showChildrenOverview(hideChildrenOverview);
+
+    const relations = await loadRelationList();
+    const relationsToRun = relations.filter(relation => relation.name === 'runOnNoteView');
+
+    for (const relationToRun of relationsToRun) {
+        await bundleService.getAndExecuteBundle(relationToRun.targetNoteId, getCurrentNote());
+    }
 }
 
 async function showChildrenOverview(hideChildrenOverview) {

src/public/javascripts/services/script_api.js

@@ -2,8 +2,9 @@ import treeService from './tree.js';
 import server from './server.js';
 import utils from './utils.js';
 import infoService from './info.js';
+import linkService from './link.js';
 
-function ScriptApi(startNote, currentNote) {
+function ScriptApi(startNote, currentNote, targetNote = null) {
     const $pluginButtons = $("#plugin-buttons");
 
     async function activateNote(notePath) {
@@ -42,7 +43,8 @@ function ScriptApi(startNote, currentNote) {
             script: script,
             params: prepareParams(params),
             startNoteId: startNote.noteId,
-            currentNoteId: currentNote.noteId
+            currentNoteId: currentNote.noteId,
+            targetNoteId: targetNote ? targetNote.noteId : null
         });
 
         return ret.executionResult;
@@ -51,6 +53,7 @@ function ScriptApi(startNote, currentNote) {
     return {
         startNote: startNote,
         currentNote: currentNote,
+        targetNote: targetNote,
         addButtonToToolbar,
         activateNote,
         getInstanceName: () => window.glob.instanceName,
@@ -59,7 +62,8 @@ function ScriptApi(startNote, currentNote) {
         parseDate: utils.parseDate,
         showMessage: infoService.showMessage,
         showError: infoService.showError,
-        reloadTree: treeService.reload
+        reloadTree: treeService.reload,
+        createNoteLink: linkService.createNoteLink
     }
 }
 

src/public/javascripts/services/script_context.js

@@ -1,13 +1,13 @@
 import ScriptApi from './script_api.js';
 import utils from './utils.js';
 
-function ScriptContext(startNote, allNotes) {
+function ScriptContext(startNote, allNotes, targetNote = null) {
     const modules = {};
 
     return {
         modules: modules,
         notes: utils.toObject(allNotes, note => [note.noteId, note]),
-        apis: utils.toObject(allNotes, note => [note.noteId, ScriptApi(startNote, note)]),
+        apis: utils.toObject(allNotes, note => [note.noteId, ScriptApi(startNote, note, targetNote)]),
         require: moduleNoteIds => {
             return moduleName => {
                 const candidates = allNotes.filter(note => moduleNoteIds.includes(note.noteId));

src/routes/api/script.js

@@ -5,7 +5,8 @@ const scriptService = require('../../services/script');
 const repository = require('../../services/repository');
 
 async function exec(req) {
-    const result = await scriptService.executeScript(req.body.script, req.body.params, req.body.startNoteId, req.body.currentNoteId);
+    const result = await scriptService.executeScript(req.body.script, req.body.params, req.body.startNoteId,
+        req.body.currentNoteId, req.body.targetNoteId);
 
     return { executionResult: result };
 }

src/services/script.js

@@ -14,7 +14,7 @@ async function executeNote(note) {
     await executeBundle(bundle);
 }
 
-async function executeBundle(bundle, startNote) {
+async function executeBundle(bundle, startNote, targetNote = null) {
     if (!startNote) {
         // this is the default case, the only exception is when we want to preserve frontend startNote
         startNote = bundle.note;
@@ -23,7 +23,7 @@ async function executeBundle(bundle, startNote) {
     // last \r\n is necessary if script contains line comment on its last line
     const script = "async function() {\r\n" + bundle.script + "\r\n}";
 
-    const ctx = new ScriptContext(startNote, bundle.allNotes);
+    const ctx = new ScriptContext(startNote, bundle.allNotes, targetNote);
 
     if (await bundle.note.hasLabel('manualTransactionHandling')) {
         return await execute(ctx, script, '');
@@ -37,9 +37,10 @@ async function executeBundle(bundle, startNote) {
  * This method preserves frontend startNode - that's why we start execution from currentNote and override
  * bundle's startNote.
  */
-async function executeScript(script, params, startNoteId, currentNoteId) {
+async function executeScript(script, params, startNoteId, currentNoteId, targetNoteId) {
     const startNote = await repository.getNote(startNoteId);
     const currentNote = await repository.getNote(currentNoteId);
+    const targetNote = await repository.getNote(targetNoteId);
 
     currentNote.content = `return await (${script}\r\n)(${getParams(params)})`;
     currentNote.type = 'code';
@@ -47,7 +48,7 @@ async function executeScript(script, params, startNoteId, currentNoteId) {
 
     const bundle = await getScriptBundle(currentNote);
 
-    return await executeBundle(bundle, startNote);
+    return await executeBundle(bundle, startNote, targetNote);
 }
 
 async function execute(ctx, script, paramsStr) {

src/services/script_context.js

@@ -9,10 +9,10 @@ const config = require('./config');
 const repository = require('./repository');
 const axios = require('axios');
 
-function ScriptContext(startNote, allNotes) {
+function ScriptContext(startNote, allNotes, targetNote = null) {
     this.modules = {};
     this.notes = utils.toObject(allNotes, note => [note.noteId, note]);
-    this.apis = utils.toObject(allNotes, note => [note.noteId, new ScriptApi(startNote, note)]);
+    this.apis = utils.toObject(allNotes, note => [note.noteId, new ScriptApi(startNote, note, targetNote)]);
     this.require = moduleNoteIds => {
         return moduleName => {
             const candidates = allNotes.filter(note => moduleNoteIds.includes(note.noteId));
@@ -27,9 +27,10 @@ function ScriptContext(startNote, allNotes) {
     };
 }
 
-function ScriptApi(startNote, currentNote) {
+function ScriptApi(startNote, currentNote, targetNote) {
     this.startNote = startNote;
     this.currentNote = currentNote;
+    this.targetNote = targetNote;
 
     this.axios = axios;
 
@@ -44,6 +45,7 @@ function ScriptApi(startNote, currentNote) {
     this.getNote = repository.getNote;
     this.getBranch = repository.getBranch;
     this.getLabel = repository.getLabel;
+    this.getRelation = repository.getRelation;
     this.getImage = repository.getImage;
     this.getEntity = repository.getEntity;
     this.getEntities = repository.getEntities;

src/views/index.ejs

@@ -180,6 +180,8 @@
       </div>
 
       <div id="note-detail-wrapper">
+        <div id="note-detail-script-area"></div>
+
         <div id="note-detail-component-wrapper">
           <div id="note-detail-text" class="note-detail-component" tabindex="2"></div>