trilium/src/routes/api/tree_changes.js

"use strict";

const express = require('express');
const router = express.Router();
const sql = require('../../services/sql');
const auth = require('../../services/auth');
const utils = require('../../services/utils');
const sync_table = require('../../services/sync_table');
const tree = require('../../services/tree');
const notes = require('../../services/notes');
const wrap = require('express-promise-wrap').wrap;

/**
 * Code in this file deals with moving and cloning note tree rows. Relationship between note and parent note is unique
 * for not deleted note trees. There may be multiple deleted note-parent note relationships.
 */

router.put('/:noteTreeId/move-to/:parentNoteId', auth.checkApiAuth, wrap(async (req, res, next) => {
    const noteTreeId = req.params.noteTreeId;
    const parentNoteId = req.params.parentNoteId;
    const sourceId = req.headers.source_id;

    const noteToMove = await tree.getNoteTree(noteTreeId);

    if (!await tree.validateParentChild(res, parentNoteId, noteToMove.noteId, noteTreeId)) {
        return;
    }

    const maxNotePos = await sql.getValue('SELECT MAX(notePosition) FROM note_tree WHERE parentNoteId = ? AND isDeleted = 0', [parentNoteId]);
    const newNotePos = maxNotePos === null ? 0 : maxNotePos + 1;

    const now = utils.nowDate();

    await sql.doInTransaction(async () => {
        await sql.execute("UPDATE note_tree SET parentNoteId = ?, notePosition = ?, dateModified = ? WHERE noteTreeId = ?",
            [parentNoteId, newNotePos, now, noteTreeId]);

        await sync_table.addNoteTreeSync(noteTreeId, sourceId);
    });

    res.send({ success: true });
}));

router.put('/:noteTreeId/move-before/:beforeNoteTreeId', auth.checkApiAuth, wrap(async (req, res, next) => {
    const noteTreeId = req.params.noteTreeId;
    const beforeNoteTreeId = req.params.beforeNoteTreeId;
    const sourceId = req.headers.source_id;

    const noteToMove = await tree.getNoteTree(noteTreeId);
    const beforeNote = await tree.getNoteTree(beforeNoteTreeId);

    if (!await tree.validateParentChild(res, beforeNote.parentNoteId, noteToMove.noteId, noteTreeId)) {
        return;
    }

    await sql.doInTransaction(async () => {
        // we don't change dateModified so other changes are prioritized in case of conflict
        // also we would have to sync all those modified note trees otherwise hash checks would fail
        await sql.execute("UPDATE note_tree SET notePosition = notePosition + 1 WHERE parentNoteId = ? AND notePosition >= ? AND isDeleted = 0",
            [beforeNote.parentNoteId, beforeNote.notePosition]);

        await sync_table.addNoteReorderingSync(beforeNote.parentNoteId, sourceId);

        await sql.execute("UPDATE note_tree SET parentNoteId = ?, notePosition = ?, dateModified = ? WHERE noteTreeId = ?",
            [beforeNote.parentNoteId, beforeNote.notePosition, utils.nowDate(), noteTreeId]);

        await sync_table.addNoteTreeSync(noteTreeId, sourceId);
    });

    res.send({ success: true });
}));

router.put('/:noteTreeId/move-after/:afterNoteTreeId', auth.checkApiAuth, wrap(async (req, res, next) => {
    const noteTreeId = req.params.noteTreeId;
    const afterNoteTreeId = req.params.afterNoteTreeId;
    const sourceId = req.headers.source_id;

    const noteToMove = await tree.getNoteTree(noteTreeId);
    const afterNote = await tree.getNoteTree(afterNoteTreeId);

    if (!await tree.validateParentChild(res, afterNote.parentNoteId, noteToMove.noteId, noteTreeId)) {
        return;
    }

    await sql.doInTransaction(async () => {
        // we don't change dateModified so other changes are prioritized in case of conflict
        // also we would have to sync all those modified note trees otherwise hash checks would fail
        await sql.execute("UPDATE note_tree SET notePosition = notePosition + 1 WHERE parentNoteId = ? AND notePosition > ? AND isDeleted = 0",
            [afterNote.parentNoteId, afterNote.notePosition]);

        await sync_table.addNoteReorderingSync(afterNote.parentNoteId, sourceId);

        await sql.execute("UPDATE note_tree SET parentNoteId = ?, notePosition = ?, dateModified = ? WHERE noteTreeId = ?",
            [afterNote.parentNoteId, afterNote.notePosition + 1, utils.nowDate(), noteTreeId]);

        await sync_table.addNoteTreeSync(noteTreeId, sourceId);
    });

    res.send({ success: true });
}));

router.put('/:noteTreeId/expanded/:expanded', auth.checkApiAuth, wrap(async (req, res, next) => {
    const noteTreeId = req.params.noteTreeId;
    const expanded = req.params.expanded;

    await sql.doInTransaction(async () => {
        await sql.execute("UPDATE note_tree SET isExpanded = ? WHERE noteTreeId = ?", [expanded, noteTreeId]);

        // we don't sync expanded attribute
    });

    res.send({});
}));

router.delete('/:noteTreeId', auth.checkApiAuth, wrap(async (req, res, next) => {
    await sql.doInTransaction(async () => {
        await notes.deleteNote(req.params.noteTreeId, req.headers.source_id);
    });

    res.send({});
}));

module.exports = router;