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feat: add dark mode and style baking support for Samsung TV compatibility

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This commit is contained in:
biggy
2026-05-13 10:31:46 +02:00
parent b69d830fc8
commit c294c8c85e
2 changed files with 176 additions and 11 deletions
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public/index.html
+44 -5
View File
@@ -299,6 +299,21 @@
letter-spacing: 0;
color: var(--text);
}
.dark-toggle {
display: flex;
align-items: center;
gap: 3px;
font-size: 13px;
cursor: pointer;
white-space: nowrap;
user-select: none;
}
.dark-toggle input[type="checkbox"] {
width: 14px;
height: 14px;
cursor: pointer;
accent-color: var(--accent);
}
.hint {
font-size: 12px;
color: var(--muted);
@@ -700,7 +715,9 @@
container.innerHTML = views
.map((v) => {
const viewUrl = origin + "/v/" + v.id;
const urlPreview = v.urls.map((u, i) => `${u.url} (${u.durationSec}s)`).join(" → ");
const urlPreview = v.urls.map((u, i) =>
`${u.url} (${u.durationSec}s)${u.forceDarkMode ? " 🌙" : ""}`
).join(" → ");
const badges = [
`<span class="badge badge-${v.method}">${v.method.toUpperCase()}</span>`,
v.metaRefreshEnabled ? '<span class="badge badge-refresh">META-REFRESH</span>' : "",
@@ -795,7 +812,7 @@
const idAttr = isEdit ? ` data-id="${existing.id}"` : "";
const urls = existing ? existing.urls : [{ url: "", durationSec: 30 }];
let urlRowsHTML = urls
.map((u, i) => buildUrlRowHTML(u.url, u.durationSec, i, urls.length))
.map((u, i) => buildUrlRowHTML(u.url, u.durationSec, i, urls.length, u.forceDarkMode))
.join("");
const method = existing ? existing.method : "ssr";
const metaChecked = existing ? existing.metaRefreshEnabled : false;
@@ -803,6 +820,8 @@
const cacheTtl = existing ? existing.cacheTtlSec : 60;
const vpW = existing ? existing.viewportWidth : 1920;
const vpH = existing ? existing.viewportHeight : 1080;
const bakeStylesChecked = existing ? existing.bakeStyles : false;
const bakeSectionStyle = method === "ssr" ? "" : "display:none;";
return `
<h2>${title}</h2>
@@ -836,6 +855,14 @@
<div class="hint" style="margin-top:-8px;margin-bottom:16px;">TV reloads when rotation advances. Required for multi-URL on non-JS browsers.</div>
</div>
<div id="bake-section" style="${bakeSectionStyle}">
<div class="checkbox-row">
<input type="checkbox" id="bake-styles" ${bakeStylesChecked ? "checked" : ""}>
<label for="bake-styles">Bake computed styles into HTML (Samsung TV compatibility)</label>
</div>
<div class="hint" style="margin-top:-8px;margin-bottom:16px;">Fixes styling issues on browsers with limited CSS support (e.g., DuckDuckGo). Increases HTML size.</div>
</div>
<div class="field">
<label>Cache TTL (seconds)</label>
<input type="number" id="view-cache-ttl" value="${cacheTtl}" min="0" max="86400" required>
@@ -862,14 +889,19 @@
</form>`;
}
function buildUrlRowHTML(url, durationSec, index, total) {
function buildUrlRowHTML(url, durationSec, index, total, forceDarkMode) {
const isSingle = total <= 1;
const disabledAttr = isSingle ? "disabled" : "";
const grayStyle = isSingle ? 'style="opacity:0.4;"' : "";
const darkChecked = forceDarkMode ? "checked" : "";
return `
<div class="url-row" data-index="${index}">
<input type="url" placeholder="https://example.com/slideshow" value="${esc(url || "")}" class="url-input" required>
<input type="number" placeholder="Seconds" value="${durationSec || 30}" min="1" max="86400" class="duration-input" ${disabledAttr} ${grayStyle} required>
<label class="dark-toggle" title="Force dark mode">
<input type="checkbox" class="dark-mode-input" ${darkChecked}>
🌙
</label>
<button type="button" class="btn btn-icon btn-danger btn-sm" onclick="removeUrlRow(this)" ${isSingle ? "disabled" : ""}>✕</button>
</div>`;
}
@@ -882,7 +914,7 @@
const container = document.getElementById("url-rows");
const rows = container.querySelectorAll(".url-row");
const div = document.createElement("div");
div.innerHTML = buildUrlRowHTML("", 30, rows.length, rows.length + 1);
div.innerHTML = buildUrlRowHTML("", 30, rows.length, rows.length + 1, false);
container.appendChild(div.firstElementChild);
updateUrlRowStates();
}
@@ -914,6 +946,7 @@
function onMethodChange() {
const method = document.getElementById("view-method").value;
document.getElementById("meta-section").style.display = method === "ssr" ? "" : "none";
document.getElementById("bake-section").style.display = method === "ssr" ? "" : "none";
}
// ═══════════════════════════════════════════════
@@ -929,6 +962,7 @@
const name = document.getElementById("view-name").value.trim();
const method = document.getElementById("view-method").value;
const metaRefreshEnabled = document.getElementById("meta-refresh").checked;
const bakeStyles = document.getElementById("bake-styles")?.checked ?? false;
const cacheTtlSec = parseInt(document.getElementById("view-cache-ttl").value) || 60;
const viewportWidth = parseInt(document.getElementById("viewport-width").value) || 1920;
const viewportHeight = parseInt(document.getElementById("viewport-height").value) || 1080;
@@ -937,9 +971,11 @@
for (const row of document.querySelectorAll("#url-rows .url-row")) {
const urlVal = row.querySelector(".url-input").value.trim();
if (!urlVal) continue;
const forceDarkMode = row.querySelector(".dark-mode-input")?.checked ?? false;
urls.push({
url: urlVal,
durationSec: parseInt(row.querySelector(".duration-input").value) || 30,
forceDarkMode,
});
}
@@ -953,7 +989,10 @@
}
const body = { name, urls, method, cacheTtlSec, viewportWidth, viewportHeight };
if (method === "ssr") body.metaRefreshEnabled = metaRefreshEnabled;
if (method === "ssr") {
body.metaRefreshEnabled = metaRefreshEnabled;
body.bakeStyles = bakeStyles;
}
try {
if (isEdit) {
src/server.ts
+132 -6
View File
@@ -25,6 +25,7 @@ const CONFIG = {
interface URLItem {
url: string;
durationSec: number;
forceDarkMode?: boolean;
}
interface View {
@@ -36,6 +37,7 @@ interface View {
cacheTtlSec: number;
viewportWidth: number;
viewportHeight: number;
bakeStyles: boolean;
createdAt: number;
}
@@ -48,6 +50,7 @@ interface ViewRow {
cache_ttl_sec: number;
viewport_width: number;
viewport_height: number;
bake_styles: number;
created_at: number;
}
@@ -59,6 +62,7 @@ interface CreateViewBody {
cacheTtlSec?: number;
viewportWidth?: number;
viewportHeight?: number;
bakeStyles?: boolean;
}
type UpdateViewBody = Partial<CreateViewBody>;
@@ -96,7 +100,7 @@ interface DeviceEntry {
// DATABASE
// ═══════════════════════════════════════════════════════════════
const db = new Database("views.db", { create: true });
const db = new Database("/app/data/views.db", { create: true });
db.run(`
CREATE TABLE IF NOT EXISTS views (
@@ -108,6 +112,7 @@ db.run(`
cache_ttl_sec INTEGER NOT NULL DEFAULT 60,
viewport_width INTEGER NOT NULL DEFAULT 1920,
viewport_height INTEGER NOT NULL DEFAULT 1080,
bake_styles INTEGER NOT NULL DEFAULT 0,
created_at INTEGER NOT NULL DEFAULT (unixepoch())
)
`);
@@ -122,6 +127,9 @@ try {
try {
db.run("ALTER TABLE views ADD COLUMN viewport_height INTEGER NOT NULL DEFAULT 1080");
} catch {}
try {
db.run("ALTER TABLE views ADD COLUMN bake_styles INTEGER NOT NULL DEFAULT 0");
} catch {}
function rowToView(row: ViewRow): View {
return {
@@ -133,6 +141,7 @@ function rowToView(row: ViewRow): View {
cacheTtlSec: row.cache_ttl_sec ?? 60,
viewportWidth: row.viewport_width ?? 1920,
viewportHeight: row.viewport_height ?? 1080,
bakeStyles: row.bake_styles === 1,
createdAt: row.created_at,
};
}
@@ -150,8 +159,8 @@ function dbLoad(id: string): View | null {
function dbInsert(v: View): void {
db.run(
`INSERT INTO views (id,name,urls,method,meta_refresh_enabled,cache_ttl_sec,viewport_width,viewport_height,created_at)
VALUES (?,?,?,?,?,?,?,?,?)`,
`INSERT INTO views (id,name,urls,method,meta_refresh_enabled,cache_ttl_sec,viewport_width,viewport_height,bake_styles,created_at)
VALUES (?,?,?,?,?,?,?,?,?,?)`,
[
v.id,
v.name,
@@ -161,6 +170,7 @@ function dbInsert(v: View): void {
v.cacheTtlSec,
v.viewportWidth,
v.viewportHeight,
v.bakeStyles ? 1 : 0,
v.createdAt,
],
);
@@ -168,7 +178,7 @@ function dbInsert(v: View): void {
function dbUpdate(v: View): void {
db.run(
"UPDATE views SET name=?,urls=?,method=?,meta_refresh_enabled=?,cache_ttl_sec=?,viewport_width=?,viewport_height=? WHERE id=?",
"UPDATE views SET name=?,urls=?,method=?,meta_refresh_enabled=?,cache_ttl_sec=?,viewport_width=?,viewport_height=?,bake_styles=? WHERE id=?",
[
v.name,
JSON.stringify(v.urls),
@@ -177,6 +187,7 @@ function dbUpdate(v: View): void {
v.cacheTtlSec,
v.viewportWidth,
v.viewportHeight,
v.bakeStyles ? 1 : 0,
v.id,
],
);
@@ -345,6 +356,7 @@ class PagePool {
async resetPage(page: Page): Promise<boolean> {
try {
await page.goto("about:blank", { waitUntil: "domcontentloaded", timeout: 5000 });
await page.emulateMediaFeatures([]);
// Clear storage via CDP — avoids opaque-origin SecurityError
const client = await page.createCDPSession();
@@ -520,13 +532,19 @@ function drainRenderQueue(): void {
async function renderViewToCache(view: View, urlIndex: number, key: string): Promise<string> {
const urlItem = view.urls[urlIndex];
const forceDarkMode = urlItem.forceDarkMode ?? false;
const bakeStyles = view.bakeStyles ?? false;
let body: string;
if (view.method === "mjpeg") {
const jpeg = await renderScreenshotFrame(urlItem.url, view.viewportWidth, view.viewportHeight);
const jpeg = await renderScreenshotFrame(
urlItem.url, view.viewportWidth, view.viewportHeight, forceDarkMode,
);
body = jpeg.toString("base64");
} else {
body = await renderSSR(urlItem.url, view.viewportWidth, view.viewportHeight);
body = await renderSSR(
urlItem.url, view.viewportWidth, view.viewportHeight, forceDarkMode, bakeStyles,
);
}
const now = Date.now();
@@ -704,6 +722,94 @@ async function resolveCSSImports(cssText: string, baseUrl: string, depth = 0): P
return cssText;
}
// ═══════════════════════════════════════════════════════════════
// COMPUTED STYLE BAKING
// ═══════════════════════════════════════════════════════════════
/**
* Bake computed styles into inline style attributes.
* This ensures styles work on browsers with limited CSS support (e.g., Samsung TV).
* Only bakes styles that differ from the element's default computed styles.
*/
async function bakeComputedStyles(page: Page): Promise<void> {
await page.evaluate((): void => {
// Create a dummy element to get default styles for comparison
const dummy = document.createElement("div");
dummy.style.cssText = "position:absolute;visibility:hidden;";
document.body.appendChild(dummy);
const computedProperties = [
// Layout
"display", "position", "top", "right", "bottom", "left",
"width", "height", "min-width", "min-height", "max-width", "max-height",
"margin", "margin-top", "margin-right", "margin-bottom", "margin-left",
"padding", "padding-top", "padding-right", "padding-bottom", "padding-left",
// Flex/Grid
"flex", "flex-direction", "flex-wrap", "flex-flow", "flex-grow", "flex-shrink", "flex-basis",
"justify-content", "align-items", "align-content", "align-self", "gap", "row-gap", "column-gap",
"grid", "grid-template", "grid-template-columns", "grid-template-rows", "grid-area",
// Box model
"box-sizing", "border", "border-radius", "border-top", "border-right", "border-bottom", "border-left",
"border-width", "border-style", "border-color",
// Colors & Background
"color", "background", "background-color", "background-image", "background-size", "background-position",
"background-repeat", "background-attachment",
// Typography
"font", "font-family", "font-size", "font-weight", "font-style", "font-variant",
"line-height", "text-align", "text-decoration", "text-transform", "letter-spacing", "word-spacing",
"white-space", "overflow-wrap", "word-break",
// Visual
"opacity", "visibility", "z-index", "overflow", "overflow-x", "overflow-y",
"box-shadow", "text-shadow", "transform", "transform-origin",
// List/Table
"list-style", "border-collapse", "border-spacing",
];
function getDefaultValue(prop: string): string {
return window.getComputedStyle(dummy).getPropertyValue(prop);
}
function shouldBake(prop: string, value: string): boolean {
if (!value || value === "none" || value === "auto" || value === "normal") return false;
if (value === "0px" || value === "0" || value === "rgba(0, 0, 0, 0)") return false;
if (value.includes("initial") || value.includes("inherit")) return false;
return value !== getDefaultValue(prop);
}
// Walk all elements and bake computed styles
const elements = document.querySelectorAll<HTMLElement>("*");
for (const el of elements) {
// Skip script, style, meta, link tags
const tag = el.tagName.toLowerCase();
if (["script", "style", "meta", "link", "noscript", "template"].includes(tag)) continue;
const computed = window.getComputedStyle(el);
const stylesToBake: string[] = [];
for (const prop of computedProperties) {
const value = computed.getPropertyValue(prop);
if (shouldBake(prop, value)) {
stylesToBake.push(`${prop}:${value}`);
}
}
if (stylesToBake.length > 0) {
// Merge with existing inline styles, preserving user-set inline styles
const existingInline = el.getAttribute("style") || "";
const bakedStyles = stylesToBake.join(";");
if (existingInline) {
// User inline styles take precedence - put them last
el.setAttribute("style", `${bakedStyles};${existingInline}`);
} else {
el.setAttribute("style", bakedStyles);
}
}
}
dummy.remove();
});
}
async function inlineAllResources(page: Page, html: string): Promise<string> {
interface InlinePayload {
css: Array<{ url: string; text: string }>;
@@ -865,10 +971,15 @@ async function renderSSR(
url: string,
viewportWidth = 1920,
viewportHeight = 1080,
forceDarkMode = false,
bakeStyles = false,
): Promise<string> {
const page = await pagePool.acquire();
try {
await page.setViewport({ width: viewportWidth, height: viewportHeight });
if (forceDarkMode) {
await page.emulateMediaFeatures([{ name: "prefers-color-scheme", value: "dark" }]);
}
// Try networkidle0 first; fall back to whatever we have on timeout
try {
@@ -883,6 +994,13 @@ async function renderSSR(
let html = await page.content();
html = await inlineAllResources(page, html);
// Bake computed styles into inline attributes (for Samsung TV compatibility)
if (bakeStyles) {
await bakeComputedStyles(page);
html = await page.content();
}
html = stripScriptTags(html);
return html;
} finally {
@@ -898,10 +1016,14 @@ async function renderScreenshotFrame(
url: string,
viewportWidth = 1920,
viewportHeight = 1080,
forceDarkMode = false,
): Promise<Buffer> {
const page = await pagePool.acquire();
try {
await page.setViewport({ width: viewportWidth, height: viewportHeight });
if (forceDarkMode) {
await page.emulateMediaFeatures([{ name: "prefers-color-scheme", value: "dark" }]);
}
try {
await page.goto(url, { waitUntil: "networkidle0", timeout: CONFIG.RENDER_TIMEOUT_MS });
@@ -1046,12 +1168,14 @@ async function handleAPI(req: Request, path: string): Promise<Response> {
urls: body.urls.map((u) => ({
url: u.url.trim(),
durationSec: Math.max(1, Math.round(u.durationSec)),
forceDarkMode: u.forceDarkMode ?? false,
})),
method: body.method,
metaRefreshEnabled: body.metaRefreshEnabled ?? false,
cacheTtlSec: Math.max(0, body.cacheTtlSec ?? 60),
viewportWidth: Math.max(320, Math.min(7680, body.viewportWidth ?? 1920)),
viewportHeight: Math.max(240, Math.min(4320, body.viewportHeight ?? 1080)),
bakeStyles: body.bakeStyles ?? false,
createdAt: Math.floor(Date.now() / 1000),
};
@@ -1087,6 +1211,7 @@ async function handleAPI(req: Request, path: string): Promise<Response> {
view.urls = body.urls.map((u) => ({
url: u.url.trim(),
durationSec: Math.max(1, Math.round(u.durationSec)),
forceDarkMode: u.forceDarkMode ?? false,
}));
}
if (body.method !== undefined) {
@@ -1101,6 +1226,7 @@ async function handleAPI(req: Request, path: string): Promise<Response> {
view.viewportWidth = Math.max(320, Math.min(7680, body.viewportWidth));
if (body.viewportHeight !== undefined)
view.viewportHeight = Math.max(240, Math.min(4320, body.viewportHeight));
if (body.bakeStyles !== undefined) view.bakeStyles = body.bakeStyles;
dbUpdate(view);
cacheInvalidate(viewId);