moved services into the service directory

src/public/javascripts/services/tree_cache.js

@@ -0,0 +1,68 @@
+import utils from "./utils.js";
+import Branch from "../entities/branch.js";
+import NoteShort from "../entities/note_short.js";
+
+class TreeCache {
+    load(noteRows, branchRows) {
+        this.parents = [];
+        this.children = [];
+        this.childParentToBranch = {};
+
+        /** @type {Object.<string, NoteShort>} */
+        this.notes = {};
+        for (const noteRow of noteRows) {
+            const note = new NoteShort(this, noteRow);
+
+            this.notes[note.noteId] = note;
+        }
+
+        /** @type {Object.<string, Branch>} */
+        this.branches = {};
+        for (const branchRow of branchRows) {
+            const branch = new Branch(this, branchRow);
+
+            this.addBranch(branch);
+        }
+    }
+
+    getNote(noteId) {
+        return this.notes[noteId];
+    }
+
+    addBranch(branch) {
+        this.branches[branch.branchId] = branch;
+
+        this.parents[branch.noteId] = this.parents[branch.noteId] || [];
+        this.parents[branch.noteId].push(this.notes[branch.parentNoteId]);
+
+        this.children[branch.parentNoteId] = this.children[branch.parentNoteId] || [];
+        this.children[branch.parentNoteId].push(this.notes[branch.noteId]);
+
+        this.childParentToBranch[branch.noteId + '-' + branch.parentNoteId] = branch;
+    }
+
+    add(note, branch) {
+        this.notes[note.noteId] = note;
+
+        this.addBranch(branch);
+    }
+
+    getBranch(branchId) {
+        return this.branches[branchId];
+    }
+
+    getBranchByChildParent(childNoteId, parentNoteId) {
+        const key = (childNoteId + '-' + parentNoteId);
+        const branch = this.childParentToBranch[key];
+
+        if (!branch) {
+            utils.throwError("Cannot find branch for child-parent=" + key);
+        }
+
+        return branch;
+    }
+}
+
+const treeCache = new TreeCache();
+
+export default treeCache;