1 files changed, 100 insertions, 0 deletions
diff --git a/src/routers/Auth.ts b/src/routers/Auth.ts
new file mode 100644
index 0000000..146bafe
--- /dev/null
+++ b/src/routers/Auth.ts
@@ -0,0 +1,100 @@
+// Copyright 2022 NotDankEnough (ilotterytea)
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// 
+//     http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { Router, CookieOptions } from "express";
+import { PrismaClient, User } from "@prisma/client";
+import { randomBytes } from "crypto";
+import axios from "axios";
+import { Logger } from "tslog";
+
+const log: Logger = new Logger({name: "authlog"});
+
+function AuthRouter(dirPath: string, cfg: {[key: string]: any}, prisma: PrismaClient): Router {
+    const router: Router = Router();
+
+    router.get("/twitch", async (req, res) => {
+        if (!("code" in req.query)) {
+            return res.json({
+                status: 400,
+                reason: "\"code\" query not found."
+            }).status(400);
+        }
+
+        try {
+            const req_token = await axios.post("https://id.twitch.tv/oauth2/token", `client_id=${cfg.Auth.ClientID}&client_secret=${cfg.Auth.ClientSecret}&code=${req.query.code}&grant_type=authorization_code&redirect_uri=${cfg.Auth.RedirectURI}`, {headers: {"Content-Type": "application/x-www-form-urlencoded"}});
+
+            const ttv_user = await axios.get("https://api.twitch.tv/helix/users", {
+                responseType: "json",
+                headers: {
+                    "Authorization": `Bearer ${req_token.data.access_token}`,
+                    "Client-Id": cfg.Auth.ClientID
+                }
+            });
+
+            const user_data = ttv_user.data.data[0];
+
+            const user: User | null = await prisma.user.findFirst({
+                where: {
+                    alias_id: parseInt(user_data.id)
+                }
+            });
+
+            const key: string = randomBytes(16).toString("hex");
+            const cookie_opts: CookieOptions = {
+                httpOnly: false,
+                secure: true,
+                sameSite: "lax"
+            };
+
+            if (!user) {
+                await prisma.user.create({
+                    data: {
+                        alias_id: parseInt(user_data.id),
+                        name: user_data.login,
+                        desc: user_data.description,
+                        pic: user_data.profile_image_url,
+                        key: key
+                    }
+                });
+
+                res.cookie("key", key, cookie_opts);
+                res.cookie("id", user_data.id, cookie_opts);
+            } else {
+                await prisma.user.update({
+                    where: {id: user.id},
+                    data: {
+                        name: user_data.login,
+                        desc: user_data.description,
+                        pic: user_data.profile_image_url,
+                        key: key
+                    }
+                });
+
+                res.cookie("key", key, cookie_opts);
+                res.cookie("id", user_data.id, cookie_opts);
+            }
+            
+            res.redirect("/me");
+        } catch (err: any) {
+            res.json({
+                status: (err.response.data.status) ? err.response.data.status : 400,
+                message: (err.response.data.message) ? err.response.data.message : "Bad request."
+            }).status((err.response.data.status) ? err.response.data.status : 400);
+        }
+    });
+
+    return router;
+}
+
+export default AuthRouter;
+\ No newline at end of file