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"use strict";
const fs = require("fs");
const util = require("util");
const {sj, res204, err400, err500} = require("./utils");
const rd = util.promisify(fs.readdir);
const rf = util.promisify(fs.readFile);
const wf = util.promisify(fs.writeFile);
const {R_OK,W_OK} = fs.constants;
const exists = s => new Promise(r => fs.access(s, R_OK|W_OK, e => r(!e)));
const NOTE_DIR = "./users";
function genNoteID() {
const now = new Date().toISOString();
return now.replace(/[^0-9]/g,"").slice(0,16);
}
async function newNote(req, res) {
let noteID, noteFile;
do {
noteID = genNoteID();
noteFile = `${NOTE_DIR}/${req.uid}/${noteID}.md`;
} while (await exists(noteFile)) // TODO increment
console.log(Date.now()+` Creating note ${req.uid}:${noteID}`);
await wf(noteFile, "");
sj(res, {id:noteID, content:""});
}
async function getNote(req, res, match) {
console.log(Date.now()+` Getting note ${req.uid}:${match.noteID}`);
const noteFile = `${NOTE_DIR}/${req.uid}/${match.noteID}.md`;
const content = await rf(noteFile, "UTF-8"); // TODO exists
sj(res, {id:match.noteID, content});
}
async function setNote(req, res, match, data) {
console.log(Date.now()+` Setting note ${req.uid}:${match.noteID}`);
if (match.noteID !== data.id) return err400(res);
const noteFile = `${NOTE_DIR}/${req.uid}/${match.noteID}.md`;
await wf(noteFile, data.content, "UTF-8");
sj(res, {});
}
async function listNotes(req, res) {
console.log(Date.now()+` Getting notes for ${req.uid}`);
const files = await rd(`${NOTE_DIR}/${req.uid}`);
const notes = files.map(fn => fn.slice(0,-3));
sj(res, notes);
}
// TODO list in order of recent updates w/ timestamps
// TODO pagination?
module.exports.attach = (app, {authed}) => {
app.get("/list", authed(listNotes));
app.post("/new", authed(newNote));
app.get("/(?<noteID>[0-9]{16})", authed(getNote));
app.jpost("/(?<noteID>[0-9]{16})", authed(setNote));
};
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