diff options
Diffstat (limited to 'src/app.ts')
| -rw-r--r-- | src/app.ts | 104 |
1 files changed, 41 insertions, 63 deletions
@@ -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) => { |