server: support replying
s-ol
1 year, 2 months ago
| 21 | 21 | } |
| 22 | 22 | app.use(express.json()); |
| 23 | 23 | app.use(cookieParser()); |
| 24 | ||
| 25 | type Note = { | |
| 26 | type: 'Note'; | |
| 27 | published: string; | |
| 28 | attributedTo: string | { | |
| 29 | id: string; | |
| 30 | type: 'Person', | |
| 31 | name: string; | |
| 32 | }; | |
| 33 | inReplyTo: string[]; | |
| 34 | replies: string[]; | |
| 35 | content: string; | |
| 36 | }; | |
| 24 | 37 | |
| 25 | 38 | const discdag = express() |
| 26 | 39 | .post('/login', wrap(async ($req, $res) => { |
| 135 | 148 | if (doc.text().indexOf("Invalid discussion ID:") > -1) |
| 136 | 149 | return $res.status(404).end(); |
| 137 | 150 | |
| 138 | type Note = { | |
| 139 | type: 'Note'; | |
| 140 | published: string; | |
| 141 | attributedTo: string | { | |
| 142 | id: string; | |
| 143 | type: 'Person', | |
| 144 | name: string; | |
| 145 | }; | |
| 146 | inReplyTo: string[]; | |
| 147 | replies: string[]; | |
| 148 | content: string; | |
| 149 | }; | |
| 150 | ||
| 151 | 151 | let first = null; |
| 152 | 152 | const items: Record<string, Note> = {}; |
| 153 | 153 | for (const node of doc('g.node', 'svg')) { |
| 199 | 199 | first, |
| 200 | 200 | items, |
| 201 | 201 | }); |
| 202 | })); | |
| 202 | })) | |
| 203 | ||
| 204 | .put('/disc/:discussion', wrap(async ($req, $res) => { | |
| 205 | const { inReplyTo, content } = $req.body as { inReplyTo: string[], content: string }; | |
| 206 | const { discussion } = $req.params; | |
| 207 | const { digest } = $req.cookies; | |
| 208 | ||
| 209 | if (!digest || !digest.length) | |
| 210 | return $res.status(401).end(); | |
| 211 | ||
| 212 | if (!inReplyTo.length || !content.length) | |
| 213 | return $res.status(400).end(); | |
| 214 | ||
| 215 | const parents = inReplyTo.map(id => { | |
| 216 | const parts = id.split('/'); | |
| 217 | return parts[parts.length - 1]; | |
| 218 | }).join(','); | |
| 219 | ||
| 220 | const res = await fetch(DISCDAG_URL, { | |
| 221 | method: 'POST', | |
| 222 | headers: { | |
| 223 | 'Content-Type': 'application/x-www-form-urlencoded', | |
| 224 | 'Cookie': `DiscussionID=${discussion}; digest=${digest}; SelectedNodes=${parents}`, | |
| 225 | }, | |
| 226 | body: new URLSearchParams({ Action: 'SendReply', ReplyText: content }).toString(), | |
| 227 | }); | |
| 228 | ||
| 229 | if (res.status !== 200) | |
| 230 | throw new Error("bad response"); | |
| 231 | ||
| 232 | const doc = cheerio.load(await res.text()); | |
| 233 | ||
| 234 | if (doc.text().indexOf("Invalid discussion ID:") > -1) | |
| 235 | return $res.status(404).end(); | |
| 236 | ||
| 237 | if (doc.text().indexOf("Replying only available if you have write access:") > -1) | |
| 238 | return $res.status(403).end(); | |
| 239 | ||
| 240 | const items: Record<string, Note> = {}; | |
| 241 | for (const node of doc('g.node polygon[stroke-width=5]', 'svg').parent()) { | |
| 242 | const nodeId = doc('title', node).text(); | |
| 243 | const [_, time, author] = nodeId.split('_'); | |
| 244 | ||
| 245 | const id = `${PUBLIC_URL}/discdag/disc/${discussion}/${nodeId}`; | |
| 246 | ||
| 247 | const content = doc('g:first text', node) | |
| 248 | .slice(3) | |
| 249 | .map(function(this: any) { return doc(this).text(); }) | |
| 250 | .toArray() | |
| 251 | .join(' ').trim(); | |
| 252 | ||
| 253 | items[id] = { | |
| 254 | type: 'Note', | |
| 255 | published: time.replace(/^(\d{4})(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)[a-z]*/, '$1-$2-$3T$4:$5:$6Z'), | |
| 256 | attributedTo: `${PUBLIC_URL}/discdag/user/${author}`, | |
| 257 | inReplyTo: [], | |
| 258 | replies: [], | |
| 259 | content, | |
| 260 | }; | |
| 261 | } | |
| 262 | ||
| 263 | for (const node of doc('g.edge', 'svg')) { | |
| 264 | let [frm, to] = doc('title', node).text().split('->'); | |
| 265 | if (frm === 'SELECTED' || to === 'SELECTED') continue; | |
| 266 | frm = `${PUBLIC_URL}/discdag/disc/${discussion}/${frm}`; | |
| 267 | to = `${PUBLIC_URL}/discdag/disc/${discussion}/${to}`; | |
| 268 | ||
| 269 | items[frm]?.replies.push(to); | |
| 270 | items[to]?.inReplyTo.push(frm); | |
| 271 | } | |
| 272 | ||
| 273 | return $res | |
| 274 | .json({ | |
| 275 | '@context': 'https://www.w3.org/ns/activitystreams', | |
| 276 | items, | |
| 277 | }); | |
| 278 | })) | |
| 279 | ; | |
| 203 | 280 | |
| 204 | 281 | app.use('/discdag', discdag); |
| 205 | 282 | |