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-rw-r--r--cgithub/src/app.ts104
1 files changed, 41 insertions, 63 deletions
diff --git a/cgithub/src/app.ts b/cgithub/src/app.ts
index bbe07fc..2fa5832 100644
--- a/cgithub/src/app.ts
+++ b/cgithub/src/app.ts
@@ -18,7 +18,9 @@ import {
getGitHubTree,
getGitHubWiki,
getGitHubWikiPages,
+ ExternalRedirectError,
GitHubHTTPError,
+ InternalRedirectError,
RedirectError,
} from "./scraper.ts";
@@ -64,73 +66,53 @@ export function createApp(eta: Eta) {
return redirectTo(c, githubUrlFor(c));
}
- app.get("/", async (c) => {
- return c.render("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 RedirectError) {
- if (e.location.startsWith("https://")) {
- return redirectTo(c, e.location);
- }
- return c.redirect(e.location);
- } else if (e instanceof GitHubHTTPError) {
- c.status(e.status as StatusCode);
- const message = `GitHub responded with HTTP ${e.status} ${e.message}`;
- return c.render("error.eta", { title: e.message, message });
- } else {
- c.status(500);
- return c.render("error.eta", { message: "" + e });
- }
- }
- return c.render(template, data);
- }
-
- // For fragments fetched asynchronously by client-side JS (see public/static/refs.js):
- // errors render as an empty body rather than the full error.eta page.
- async function tryRenderFragment<T extends object>(
- c: Context,
- template: string,
- promise: Promise<T>,
- ) {
- let data: T;
- try {
- data = await promise;
- } catch (e) {
- const status =
+ app.onError((e, c) => {
+ // Fragments fetched asynchronously by client-side JS (see public/static/refs.js)
+ // fail as an empty body rather than the full error.eta page.
+ if (c.req.path.startsWith("/api/")) {
+ c.status(
e instanceof GitHubHTTPError
? (e.status as StatusCode)
: e instanceof RedirectError
? 404
- : 500;
- c.status(status);
+ : 500,
+ );
return c.body(null);
}
- return c.render(template, data);
- }
+
+ if (e instanceof InternalRedirectError) return c.redirect(e.location);
+ if (e instanceof ExternalRedirectError) return redirectTo(c, e.location);
+ if (e instanceof GitHubHTTPError) {
+ c.status(e.status as StatusCode);
+ const message = `GitHub responded with HTTP ${e.status} ${e.message}`;
+ return c.render("error.eta", { title: e.message, message });
+ }
+ c.status(500);
+ return c.render("error.eta", { message: "" + e });
+ });
+
+ app.get("/", async (c) => {
+ return c.render("home.eta");
+ });
app.get("/:owner", async (c) => {
const { owner } = c.req.param();
- return tryRender(c, "owner.eta", getGitHubOwner(owner));
+ return c.render("owner.eta", await getGitHubOwner(owner));
});
app.get("/:owner/:repo", async (c) => {
const { owner, repo } = c.req.param();
- return tryRender(c, "repo.eta", getGitHubRepo(owner, repo));
+ return c.render("repo.eta", await getGitHubRepo(owner, repo));
});
app.get("/:owner/:repo/tree/:branch/:path{.*}?", async (c) => {
const { owner, repo, branch, path = "" } = c.req.param();
- return tryRender(c, "tree.eta", getGitHubTree(owner, repo, branch, path));
+ return c.render("tree.eta", await getGitHubTree(owner, repo, branch, path));
});
app.get("/:owner/:repo/blob/:branch/:path{.*}", async (c) => {
const { owner, repo, branch, path } = c.req.param();
- return tryRender(c, "blob.eta", getGitHubBlob(owner, repo, branch, path));
+ return c.render("blob.eta", await getGitHubBlob(owner, repo, branch, path));
});
app.get("/:owner/:repo/raw/:branch/:path{.*}", async (c) => {
@@ -168,12 +150,12 @@ export function createApp(eta: Eta) {
// page can never be mistaken for one.
app.get("/:owner/:repo/wiki", async (c) => {
const { owner, repo } = c.req.param();
- return tryRender(c, "wiki.eta", getGitHubWiki(owner, repo));
+ return c.render("wiki.eta", await getGitHubWiki(owner, repo));
});
app.get("/:owner/:repo/wiki/_pages", async (c) => {
const { owner, repo } = c.req.param();
- return tryRender(c, "wikiPages.eta", getGitHubWikiPages(owner, repo));
+ return c.render("wikiPages.eta", await getGitHubWikiPages(owner, repo));
});
// An older revision of a page renders exactly like its current one.
@@ -182,7 +164,7 @@ export function createApp(eta: Eta) {
if (page.startsWith("_") || !/^[0-9a-f]{40}$/.test(oid)) {
return redirectToGitHub(c);
}
- return tryRender(c, "wiki.eta", getGitHubWiki(owner, repo, page, oid));
+ return c.render("wiki.eta", await getGitHubWiki(owner, repo, page, oid));
});
app.get("/:owner/:repo/wiki/:page", async (c) => {
@@ -190,7 +172,7 @@ export function createApp(eta: Eta) {
if (page.startsWith("_")) {
return redirectToGitHub(c);
}
- return tryRender(c, "wiki.eta", getGitHubWiki(owner, repo, page));
+ return c.render("wiki.eta", await getGitHubWiki(owner, repo, page));
});
app.get("/:owner/:repo/issues", async (c) => {
@@ -203,13 +185,13 @@ export function createApp(eta: Eta) {
return c.redirect(`/${owner}/${repo}/issues?q=${encodeURIComponent(`is:issue ${q}`)}`);
}
- return tryRender(c, "issues.eta", getGitHubIssues(owner, repo, { q }));
+ return c.render("issues.eta", await getGitHubIssues(owner, repo, { q }));
});
app.get("/:owner/:repo/pulls", async (c) => {
const { owner, repo } = c.req.param();
const q = c.req.query("q");
- return tryRender(c, "pulls.eta", getGitHubPulls(owner, repo, { q }));
+ return c.render("pulls.eta", await getGitHubPulls(owner, repo, { q }));
});
app.get("/:owner/:repo/search", async (c) => {
@@ -229,7 +211,7 @@ export function createApp(eta: Eta) {
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));
+ return c.render("commits.eta", await getGitHubCommits(owner, repo, branch, path));
});
// Internal endpoints fetched asynchronously by client-side JS, not meant to
@@ -246,32 +228,28 @@ export function createApp(eta: Eta) {
if (view !== "tree" && view !== "blob" && view !== "commits") {
return c.notFound();
}
- const refs = getGitHubRefs(owner, repo, type).then((data) => ({ ...data, view, path }));
- return tryRenderFragment(c, "_refs.eta", refs);
+ const refs = await getGitHubRefs(owner, repo, type);
+ return c.render("_refs.eta", { ...refs, view, path });
});
app.get("/api/:owner/:repo/latest-commit/:branch/:path{.*}?", async (c) => {
const { owner, repo, branch, path = "" } = c.req.param();
- return tryRenderFragment(
- c,
- "_latestCommit.eta",
- getGitHubLatestCommit(owner, repo, branch, path),
- );
+ return c.render("_latestCommit.eta", await getGitHubLatestCommit(owner, repo, branch, path));
});
app.get("/api/:owner/:repo/sidebar", async (c) => {
const { owner, repo } = c.req.param();
- return tryRenderFragment(c, "_sidebar.eta", getGitHubSidebar(owner, repo));
+ return c.render("_sidebar.eta", await getGitHubSidebar(owner, repo));
});
app.get("/:owner/:repo/releases/tag/:tag", async (c) => {
const { owner, repo, tag } = c.req.param();
- return tryRender(c, "release.eta", getGitHubRelease(owner, repo, tag));
+ return c.render("release.eta", await getGitHubRelease(owner, repo, tag));
});
app.get("/:owner/:repo/releases", async (c) => {
const { owner, repo } = c.req.param();
- return tryRender(c, "releases.eta", getGitHubReleases(owner, repo));
+ return c.render("releases.eta", await getGitHubReleases(owner, repo));
});
app.all("*", async (c) => {
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-04 14:55:56 +0000