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file - unify '/:id' & '/:id/:name'

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otofune 2017-11-07 09:14:39 +09:00
parent f80283a94f
commit 8e62cc1efd
1 changed files with 33 additions and 61 deletions
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94
src/file/server.ts
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@ -86,70 +86,42 @@ function send(data: Buffer, type: string, req: express.Request, res: express.Res
}
}
async function sendFileById (req: express.Request, res: express.Response): Promise<void> {
// Validate id
if (!mongodb.ObjectID.isValid(req.params.id)) {
res.status(400).send('incorrect id');
return;
}
const fileId = new mongodb.ObjectID(req.params.id);
const file = await DriveFile.findOne({ _id: fileId });
if (file == null) {
res.status(404).sendFile(`${__dirname}/assets/dummy.png`);
return;
}
const bucket = await getGridFSBucket();
const buffer = await ((id): Promise<Buffer> => new Promise((resolve, reject) => {
const chunks = [];
const readableStream = bucket.openDownloadStream(id);
readableStream.on('data', chunk => {
chunks.push(chunk);
});
readableStream.on('end', () => {
resolve(Buffer.concat(chunks));
});
}))(fileId);
send(buffer, file.metadata.type, req, res);
}
/**
* Routing
*/
app.get('/:id', async (req, res) => {
// Validate id
if (!mongodb.ObjectID.isValid(req.params.id)) {
res.status(400).send('incorrect id');
return;
}
const fileId = new mongodb.ObjectID(req.params.id);
const file = await DriveFile.findOne({ _id: fileId });
if (file == null) {
res.status(404).sendFile(`${__dirname}/assets/dummy.png`);
return;
}
const bucket = await getGridFSBucket();
const buffer = await ((id): Promise<Buffer> => new Promise((resolve, reject) => {
const chunks = [];
const readableStream = bucket.openDownloadStream(id);
readableStream.on('data', chunk => {
chunks.push(chunk);
});
readableStream.on('end', () => {
resolve(Buffer.concat(chunks));
});
}))(fileId);
send(buffer, file.metadata.type, req, res);
});
app.get('/:id/:name', async (req, res) => {
// Validate id
if (!mongodb.ObjectID.isValid(req.params.id)) {
res.status(400).send('incorrect id');
return;
}
const fileId = new mongodb.ObjectID(req.params.id);
const file = await DriveFile.findOne({ _id: fileId });
if (file == null) {
res.status(404).sendFile(`${__dirname}/assets/dummy.png`);
return;
}
const bucket = await getGridFSBucket();
const buffer = await ((id): Promise<Buffer> => new Promise((resolve, reject) => {
const chunks = [];
const readableStream = bucket.openDownloadStream(id);
readableStream.on('data', chunk => {
chunks.push(chunk);
});
readableStream.on('end', () => {
resolve(Buffer.concat(chunks));
});
}))(fileId);
send(buffer, file.metadata.type, req, res);
});
app.get('/:id', sendFileById);
app.get('/:id/:name', sendFileById);
module.exports = app;