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import { createAdaptorServer, serve } from "@hono/node-server";
import { serveStatic } from "@hono/node-server/serve-static";
import { Eta } from "eta";
import { type Context, Hono } from "hono";
import type { StatusCode } from "hono/utils/http-status";
import path from "node:path";
import url from "node:url";
import {
getGitHubBlob,
getGitHubCommits,
getGitHubIssues,
getGitHubRepo,
getGitHubTree,
GitHubHTTPError,
} from "./scraper.ts";
const __dirname = path.dirname(url.fileURLToPath(import.meta.url));
const app = new Hono();
const eta = new Eta({ views: path.join(__dirname, "..", "views") });
app.use("/static/*", serveStatic({ root: path.join(__dirname, "..") }));
app.get("/", async (c) => {
return c.html(await eta.renderAsync("home.eta", {}));
});
async function tryRender<T extends object>(c: Context, template: string, promise: Promise<T>) {
let data: T;
try {
data = await promise;
} catch (e) {
if (e instanceof GitHubHTTPError) {
c.status(e.status as StatusCode);
const message = `GitHub responded with HTTP ${e.status} ${e.message}`;
return c.html(await eta.renderAsync("error.eta", { title: e.message, message }));
} else {
c.status(500);
return c.html(await eta.renderAsync("error.eta", { message: "" + e }));
}
}
return c.html(await eta.renderAsync(template, data));
}
app.get("/:owner/:repo", async (c) => {
const { owner, repo } = c.req.param();
return tryRender(c, "repo.eta", getGitHubRepo(owner, repo));
});
app.get("/:owner/:repo/tree/:branch/:path{.*}?", async (c) => {
const { owner, repo, branch, path = "" } = c.req.param();
return tryRender(c, "tree.eta", getGitHubTree(owner, repo, branch, path));
});
app.get("/:owner/:repo/blob/:branch/:path{.*}", async (c) => {
const { owner, repo, branch, path } = c.req.param();
return tryRender(c, "blob.eta", getGitHubBlob(owner, repo, branch, path));
});
app.get("/:owner/:repo/raw/:branch/:path{.*}", async (c) => {
const { owner, repo, branch, path } = c.req.param();
c.header("Referrer-Policy", "no-referrer");
return c.redirect(`https://raw.githubusercontent.com/${owner}/${repo}/${branch}/${path}`);
});
app.get("/:owner/:repo/issues", async (c) => {
const { owner, repo } = c.req.param();
return tryRender(c, "issues.eta", getGitHubIssues(owner, repo));
});
app.get("/:owner/:repo/commits/:branch/:path{.*}?", async (c) => {
const { owner, repo, branch, path = "" } = c.req.param();
return tryRender(c, "commits.eta", getGitHubCommits(owner, repo, branch, path));
});
app.all("*", async (c) => {
const path = c.req.path;
c.header("Referrer-Policy", "no-referrer");
return c.redirect(`https://github.com${path}`);
});
if (process.env.LISTEN_FDS === "1") {
const server = createAdaptorServer(app);
// Listen on SD_LISTEN_FDS_START.
server.listen({ fd: 3 }, () => {
console.log("Server running via systemd socket activation");
});
} else {
const port = parseInt(process.env.PORT || "3000", 10);
serve({ fetch: app.fetch, port }, (info) => {
console.log(`Server running on http://localhost:${info.port}`);
});
}
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