feat: implement reporter

.github/scripts/reporter.ts

@@ -0,0 +1,58 @@
+const SCOREBOARD_API = "https://boundvariable.space/scoreboard";
+const DISCORD_WEBHOOK_URL = process.env.DISCORD_WEBHOOK_URL;
+const TEAM_NAME = "Maximum";
+
+async function postToDiscord() {
+  try {
+    const response = await fetch(SCOREBOARD_API);
+    const data = await response.json();
+
+    // dataを構造体に変換
+    const formattedData = data.rows.map((row) => {
+      const columns = data.columns;
+      const obj = {};
+      columns.forEach((column, index) => {
+        obj[column] = row.values[index];
+      });
+      return obj;
+    });
+
+    // dataを#順にソート
+    formattedData.sort((a, b) => a["#"] - b["#"]);
+
+    // 上位10チーム+自チームのみ抽出
+    const top10WithUs = formattedData.filter(
+      (row) => row.team === TEAM_NAME || row["#"] <= 10
+    );
+
+    // メッセージ作成、自分のチームを強調
+    const message = top10WithUs
+      .map((row) => {
+        const rank = row["#"];
+        const team = row.team;
+        const isUs = row.team === TEAM_NAME;
+        return `${isUs ? "**" : ""}${rank}. ${team}${isUs ? "**" : ""}`;
+      })
+      .join("\n");
+
+    const now = new Date().toLocaleString("ja-JP", {
+      timeZone: "Asia/Tokyo",
+    });
+
+    await fetch(DISCORD_WEBHOOK_URL, {
+      method: "POST",
+      headers: {
+        "Content-Type": "application/json",
+      },
+      body: JSON.stringify({
+        content: `**Scoreboard**\n\`\`\`${message}\`\`\`\nLast updated: ${now}`,
+      }),
+    });
+
+    console.log("Posted to Discord successfully.");
+  } catch (error) {
+    console.error("Error posting to Discord:", error);
+  }
+}
+
+postToDiscord();

.github/workflows/reporter.yaml

@@ -0,0 +1,23 @@
+name: ICFPC2024 Leaderboard Reporter
+
+on:
+  schedule:
+    - cron: "0 * * * *"
+  push:
+    branches:
+      - main
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v1
+
+      - name: Run
+        run: bun run .github/scripts/reporter.ts
+        env:
+          DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_WEBHOOK_URL }}