Implement extract.ts helper for quick manual testing

src/yt/solver/extract.ts

@@ -0,0 +1,24 @@
+import { parse } from "meriyah";
+import { getIO } from "./test/io.ts";
+import { downloadCached } from "./test/utils.ts";
+import { argv } from "node:process";
+import { getSolutions, modifyPlayer } from "./solvers.ts";
+import { generate } from "astring";
+
+const data = await (
+  argv.length > 3
+    ? () => downloadCached(argv[2], argv[3])
+    : async () => {
+        const io = await getIO();
+        return await io.read(argv[2]);
+      }
+)();
+
+const program = parse(data);
+const statements = modifyPlayer(program);
+const solutionMap = getSolutions(statements);
+for (const solutions of Object.values(solutionMap)) {
+  for (const solution of solutions) {
+    console.log(String.raw`${generate(solution)}`);
+  }
+}

src/yt/solver/test/download.ts

@@ -1,24 +1,9 @@
 import { players, tests } from "./tests.ts";
-import { getCachePath } from "./utils.ts";
-import { getIO } from "./io.ts";
-
-const io = await getIO();
+import { downloadCached } from "./utils.ts";
 
 for (const test of tests) {
   const variants = test.variants ?? players.keys();
   for (const variant of variants) {
-    const path = getCachePath(test.player, variant);
-    if (await io.exists(path)) {
-      continue;
-    }
-    const playerPath = players.get(variant);
-    const url = `https://www.youtube.com/s/player/${test.player}/${playerPath}`;
-    console.log("Requesting", url);
-    const response = await fetch(url);
-    if (!response.ok) {
-      console.error(`Failed to request ${variant} player for ${test.player}`);
-      continue;
-    }
-    await io.write(path, response);
+    await downloadCached(test.player, variant);
   }
 }

src/yt/solver/test/utils.ts

@@ -1,5 +1,26 @@
-import { type Variant } from "./tests.ts";
+import { getIO } from "./io.ts";
+import { players, type Variant } from "./tests.ts";
 
 export function getCachePath(player: string, variant: Variant) {
   return `src/yt/solver/test/players/${player}-${variant}`;
 }
+
+export async function downloadCached(player: string, variant: string) {
+  const io = await getIO();
+
+  const playerPath = players.get(variant as Variant);
+  if (!playerPath) {
+    throw `Invalid player variant: ${variant}`;
+  }
+  const path = getCachePath(player, variant as Variant);
+  if (!(await io.exists(path))) {
+    const url = `https://www.youtube.com/s/player/${player}/${playerPath}`;
+    console.log("Requesting", url);
+    const response = await fetch(url);
+    if (!response.ok) {
+      throw `Failed to request ${variant} player for ${player}`;
+    }
+    await io.write(path, response);
+  }
+  return await io.read(path);
+}