80 lines
2.6 KiB
TypeScript
80 lines
2.6 KiB
TypeScript
/**
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* Moves favicon-shaped values out of `rich_content.thumbnailUrl` into the new
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* `faviconUrl` field.
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*
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* The extraction cascade used to end at the page's icon and then at a guessed
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* `${origin}/favicon.ico`, so `thumbnailUrl` was almost never empty — it just
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* held a 16×16 icon (or a 404) that the UI then cover-cropped into a 128×72
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* box. The cascade now stops at real artwork, and an absent `thumbnailUrl`
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* means "no artwork", which is what lets the frontend draw a placeholder.
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* This migration gives rows written before that change the same meaning.
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*
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* Purely local — it classifies the already-stored URL and makes no network
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* calls, so `accentColor` is deliberately not backfilled: the frontend derives
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* a stable hue from the hostname whenever one is missing, and
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* `refreshDumpMetadata` fetches the real color on demand.
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*
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* Idempotent: rows that already carry a `faviconUrl` are skipped, so a fresh
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* database built from schema.sql is a no-op.
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*
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* @module
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*/
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import type { DatabaseSync } from "node:sqlite";
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/**
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* Checks whether a stored thumbnail URL is really a site icon.
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*
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* Deliberately loose. A false positive (a genuine cover image living under
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* `/assets/icons/`) renders contained on a tinted field instead of
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* cover-cropped — mildly wrong, never broken — so chasing them isn't worth the
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* extra rules.
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*/
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function isIconUrl(raw: string): boolean {
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let pathname: string;
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try {
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pathname = new URL(raw).pathname;
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} catch {
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return false;
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}
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return /favicon|apple-touch-icon|\/icons?\//i.test(pathname) ||
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/\.(ico|svg)$/i.test(pathname);
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}
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/** Applies this migration to `db`. */
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export function up(db: DatabaseSync): void {
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const rows = db.prepare(
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`SELECT id, rich_content FROM dumps
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WHERE kind = 'url' AND rich_content IS NOT NULL;`,
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).all() as { id: string; rich_content: string }[];
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const update = db.prepare(
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`UPDATE dumps SET rich_content = ? WHERE id = ?;`,
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);
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let patched = 0;
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for (const row of rows) {
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let rich: { thumbnailUrl?: string; faviconUrl?: string };
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try {
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rich = JSON.parse(row.rich_content);
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} catch {
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continue; // malformed payload — leave it untouched
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}
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if (rich.faviconUrl || !rich.thumbnailUrl) continue;
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if (!isIconUrl(rich.thumbnailUrl)) continue;
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const { thumbnailUrl: _dropped, ...rest } = rich;
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update.run(
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JSON.stringify({ ...rest, faviconUrl: rich.thumbnailUrl }),
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row.id,
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);
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patched++;
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}
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if (patched > 0) {
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console.log(
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`[migrate] 0011: reclassified ${patched} favicon thumbnail(s)`,
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);
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}
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}
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