drawdb-io/drawdb
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use ddb files as source

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Tei Yuan Wei
2024-09-23 16:24:39 +08:00
parent 6c3d916a4d
commit d1d23b1c92
9 changed files with 161 additions and 313 deletions
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17
server/README.md Normal file
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@@ -0,0 +1,17 @@
# DrawDB Node.js Wrapper
This is a Node.js application that serves static files for the DrawDB frontend and provides an API to handle file operations for `.ddb` files.
## Environment variables:
- `DRAWDB_FILE_DIR`: Directory where `.ddb` files will be stored (default: `/usercode`).
- `DRAWDB_HOME`: Path to the DrawDB frontend static files (default: `../dist`).
- `DRAWDB_PORT`: Port number for the app (default: `8080`).
## Run dev
```bash
export DRAWDB_FILE_DIR=/some-dir-to-write-ddb-files
cd server
npm run dev
```
The server will be running at `http://localhost:8080` (or the port specified by `DRAWDB_PORT`).

28
server/index.js
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@@ -14,14 +14,14 @@ app.use(express.json())
// Serve the static files from the DrawDB app
app.use(express.static(DRAWDB_HOME));
// Endpoints
app.post('/api/usercode-files/', (req, res) => {
const { filename, content } = req.body;
if (!filename || !content) {
return res.status(400).send('Filename and content are required');
}
const filePath = path.join(DRAWDB_FILE_DIR, filename);
const filePath = path.join(DRAWDB_FILE_DIR, filename);
fs.writeFile(filePath, JSON.stringify(content), 'utf8', (err) => {
if (err) {
return res.status(500).send('Error writing ddb file');
@@ -32,15 +32,13 @@ app.post('/api/usercode-files/', (req, res) => {
app.get('/api/usercode-files/:filename', (req, res) => {
const filename = req.params.filename;
const filePath = path.join(DRAWDB_FILE_DIR, filename); // Adjust the path based on your directory structure
const filePath = path.join(DRAWDB_FILE_DIR, filename);
fs.readFile(filePath, 'utf8', (err, data) => {
if (err) {
if (err.code === 'ENOENT') {
// File not found
return res.status(404).send('File not found');
}
// Some other error
return res.status(500).send('Error reading file');
}
res.send(data);
@@ -49,13 +47,11 @@ app.get('/api/usercode-files/:filename', (req, res) => {
app.delete('/api/usercode-files/:filename', (req, res) => {
const filename = req.params.filename;
if (!filename) {
return res.status(400).send('Filename is required');
}
const filePath = path.join(DRAWDB_FILE_DIR, filename);
fs.access(filePath, fs.constants.F_OK, (err) => {
if (err) {
return res.send('File does not exists.');
@@ -69,12 +65,26 @@ app.delete('/api/usercode-files/:filename', (req, res) => {
});
})
// Handles any requests that don't match the ones above
app.get('/api/diagrams', (_req, res) => {
const dirPath = DRAWDB_FILE_DIR;
fs.readdir(dirPath, (err, files) => {
if (err) {
return res.status(500).send('Unable to scan directory');
}
const ddbFiles = files.filter(file => path.extname(file) === '.ddb');
const fileContents = ddbFiles.map(file => {
const filePath = path.join(dirPath, file);
const fileContent = fs.readFileSync(filePath, 'utf-8');
return JSON.parse(fileContent);
});
res.json(fileContents);
});
});
app.get('*', (req, res) => {
res.sendFile(path.join(DRAWDB_HOME, 'index.html'));
});
app.listen(DRAWDB_PORT, () => {
console.log(`DrawDB is running on port ${DRAWDB_PORT}`);
});

1
server/package.json
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@@ -6,6 +6,7 @@
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1",
"start": "node index.js",
"start:prod": "node server.js",
"build": "webpack"
},
"keywords": [],

2
server/server.js
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256
server/server.js.LICENSE.txt
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@@ -1,256 +0,0 @@
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/
/*!
* accepts
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* body-parser
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* body-parser
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* bytes
* Copyright(c) 2012-2014 TJ Holowaychuk
* Copyright(c) 2015 Jed Watson
* MIT Licensed
*/
/*!
* content-disposition
* Copyright(c) 2014-2017 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* content-type
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* cookie
* Copyright(c) 2012-2014 Roman Shtylman
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* depd
* Copyright(c) 2014-2018 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* destroy
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015-2022 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* ee-first
* Copyright(c) 2014 Jonathan Ong
* MIT Licensed
*/
/*!
* encodeurl
* Copyright(c) 2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* escape-html
* Copyright(c) 2012-2013 TJ Holowaychuk
* Copyright(c) 2015 Andreas Lubbe
* Copyright(c) 2015 Tiancheng "Timothy" Gu
* MIT Licensed
*/
/*!
* etag
* Copyright(c) 2014-2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* express
* Copyright(c) 2009-2013 TJ Holowaychuk
* Copyright(c) 2013 Roman Shtylman
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* express
* Copyright(c) 2009-2013 TJ Holowaychuk
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* finalhandler
* Copyright(c) 2014-2022 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* forwarded
* Copyright(c) 2014-2017 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* fresh
* Copyright(c) 2012 TJ Holowaychuk
* Copyright(c) 2016-2017 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* http-errors
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* media-typer
* Copyright(c) 2014 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* merge-descriptors
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* methods
* Copyright(c) 2013-2014 TJ Holowaychuk
* Copyright(c) 2015-2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* mime-db
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015-2022 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* mime-types
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* negotiator
* Copyright(c) 2012 Federico Romero
* Copyright(c) 2012-2014 Isaac Z. Schlueter
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* on-finished
* Copyright(c) 2013 Jonathan Ong
* Copyright(c) 2014 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* parseurl
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2014-2017 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* proxy-addr
* Copyright(c) 2014-2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* range-parser
* Copyright(c) 2012-2014 TJ Holowaychuk
* Copyright(c) 2015-2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* raw-body
* Copyright(c) 2013-2014 Jonathan Ong
* Copyright(c) 2014-2022 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* send
* Copyright(c) 2012 TJ Holowaychuk
* Copyright(c) 2014-2022 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* serve-static
* Copyright(c) 2010 Sencha Inc.
* Copyright(c) 2011 TJ Holowaychuk
* Copyright(c) 2014-2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* statuses
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* toidentifier
* Copyright(c) 2016 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* type-is
* Copyright(c) 2014 Jonathan Ong
* Copyright(c) 2014-2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* unpipe
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
/*!
* vary
* Copyright(c) 2014-2017 Douglas Christopher Wilson
* MIT Licensed
*/
/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */

1
server/usercode/Untitled Diagram.ddb
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@@ -1 +0,0 @@
{"author":"Unnamed","title":"Untitled Diagram","date":"2024-09-20T09:27:33.343Z","tables":[{"id":0,"name":"table_0","x":0,"y":0,"fields":[{"name":"id","type":"INTEGER","default":"","check":"","primary":true,"unique":true,"notNull":true,"increment":true,"comment":"","id":0}],"comment":"","indices":[],"color":"#175e7a","key":1726824435540}],"relationships":[],"notes":[],"subjectAreas":[],"database":"mysql"}