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basic lazy loading of tree now works, still WIP

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This commit is contained in:
azivner
2018-04-16 20:40:18 -04:00
parent 1687ed7e0b
commit 82de1c88d4
6 changed files with 154 additions and 75 deletions
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72
src/routes/api/tree.js
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@@ -3,7 +3,26 @@
const sql = require('../../services/sql');
const optionService = require('../../services/options');
const protectedSessionService = require('../../services/protected_session');
const utils = require('../../services/utils');
async function getNotes(noteIds) {
const questionMarks = noteIds.map(() => "?").join(",");
const notes = await sql.getRows(`
SELECT noteId, title, isProtected, type, mime
FROM notes WHERE isDeleted = 0 AND noteId IN (${questionMarks})`, noteIds);
protectedSessionService.decryptNotes(notes);
notes.forEach(note => note.isProtected = !!note.isProtected);
return notes;
}
async function getParentToChildren(noteIds) {
const questionMarks = noteIds.map(() => "?").join(",");
return await sql.getRows(`SELECT branchId, noteId AS 'childNoteId', parentNoteId FROM branches WHERE isDeleted = 0
AND parentNoteId IN (${questionMarks})`, noteIds);
}
async function getTree() {
const branches = await sql.getRows(`
@@ -18,34 +37,43 @@ async function getTree() {
SELECT branches.* FROM tree JOIN branches USING(branchId);`);
const noteIds = branches.map(b => b.noteId);
const questionMarks = branches.map(() => "?").join(",");
const notes = await sql.getRows(`
SELECT noteId, title, isProtected, type, mime
FROM notes WHERE isDeleted = 0 AND noteId IN (${questionMarks})`, noteIds);
const notes = await getNotes(noteIds);
protectedSessionService.decryptNotes(notes);
notes.forEach(note => note.isProtected = !!note.isProtected);
const relationships = await sql.getRows(`SELECT noteId, parentNoteId FROM branches WHERE isDeleted = 0
AND parentNoteId IN (${questionMarks})`, noteIds);
const parentToChild = {};
for (const rel of relationships) {
parentToChild[rel.parentNoteId] = parentToChild[rel.parentNoteId] || [];
parentToChild[rel.parentNoteId].push(rel.noteId);
}
const parentToChildren = await getParentToChildren(noteIds);
return {
startNotePath: await optionService.getOption('startNotePath'),
branches: branches,
notes: notes,
parentToChild
branches,
notes,
parentToChildren
};
}
async function load(req) {
let noteIds = req.body.noteIds;
const branchIds = req.body.branchIds;
if (branchIds && branchIds.length > 0) {
noteIds = await sql.getColumn(`SELECT noteId FROM branches WHERE isDeleted = 0 AND branchId IN(${branchIds.map(() => "?").join(",")})`, branchIds);
}
const questionMarks = noteIds.map(() => "?").join(",");
const branches = await sql.getRows(`SELECT * FROM branches WHERE isDeleted = 0 AND noteId IN (${questionMarks})`, noteIds);
const notes = await getNotes(noteIds);
const parentToChildren = await getParentToChildren(noteIds);
return {
branches,
notes,
parentToChildren
};
}
module.exports = {
getTree
getTree,
load
};