feat: get paste route

src/db/bin.ts

@@ -1,16 +1,29 @@
 import { Pool, QueryResult } from "pg";
 import { Word } from "../utils/types";
-import { Query } from "./queries";
 
 // query wrappers
 export const getAvailableWord = async (db: Pool): Promise<Word | undefined> => {
+    let query =
+        "SELECT * FROM words WHERE taken = 'f' ORDER BY random() LIMIT 1;";
     const data: void | QueryResult<Word> = await db
-        .query(Query.getAvailableWord)
+        .query(query)
         .catch((err) => err);
 
     return data?.rows[0];
 };
 
 export const setWordTaken = async (db: Pool, id: number) => {
-    await db.query(Query.setWordTaken(id)).catch((err) => err);
+    let query = `UPDATE words SET taken = 't' WHERE id = ${id}`;
+    await db.query(query).catch((err) => err);
+};
+
+export const getWordFromVal = async (
+    db: Pool,
+    id: string
+): Promise<Word | undefined> => {
+    let query = `SELECT * FROM words WHERE val = '${id}';`;
+    let results: QueryResult<Word> | void = await db
+        .query(query)
+        .catch((err) => err);
+    return results?.rows[0];
 };

src/db/queries.ts

@@ -1,9 +0,0 @@
-// query strings
-export const Query = {
-    getAvailableWord:
-        "SELECT * FROM words WHERE taken = 'f' ORDER BY random() LIMIT 1;",
-
-    setWordTaken(id: number) {
-        return `UPDATE words SET taken = 't' WHERE id = ${id}`;
-    },
-};

src/routes/bin.ts

@@ -1,11 +1,11 @@
 import { Router, Request, Response, NextFunction } from "express";
 import { Pool, QueryResult } from "pg";
-import fs from "fs";
 import path from "path";
 import { Word } from "../utils/types";
 import fsp from "fs/promises";
-import { projectRoot } from "../utils";
-import { getAvailableWord, setWordTaken } from "../db/bin";
+import { getPastePath, projectRoot } from "../utils";
+import { getAvailableWord, getWordFromVal, setWordTaken } from "../db/bin";
+import { getPackedSettings } from "http2";
 
 export default function BinRouter(db: Pool) {
     const router: Router = Router();
@@ -35,5 +35,31 @@ export default function BinRouter(db: Pool) {
         res.status(500).json({ message: "Something went wrong" });
     });
 
+    router.get("/paste/:id", async (req: Request, res: Response) => {
+        const id: string = req.params.id;
+
+        if (id == undefined || id == "") {
+            return res.status(400).json({ message: "Invalid paste id!" });
+        }
+
+        // verify word
+        let word = await getWordFromVal(db, id);
+        if (word == undefined || !word.taken) {
+            return res.status(404).json({ message: "Paste not found!" });
+        }
+
+        // send paste
+        const paste = await fsp
+            .readFile(getPastePath(word.val), {
+                encoding: "utf-8",
+            })
+            .catch((err: Error) => {
+                throw err;
+            });
+
+        res.set("Content-type", "text/plain");
+        return res.status(200).send(paste);
+    });
+
     return router;
 }

src/utils/index.ts

@@ -11,6 +11,11 @@ export const logWarning = (msg: string) => console.log(chalk.bold.yellow(msg));
 
 export const projectRoot = path.join(__dirname, "..", "..");
 
+// generate paste path string
+export const getPastePath = (word: string): string => {
+    return path.join(projectRoot, "data", word + ".txt");
+};
+
 export const errorHandler: ErrorRequestHandler = (err, _, res, __) => {
     logError(err);