feat: reforca o branding das exportacoes

lib/utils/export-branding.ts

@@ -0,0 +1,108 @@
+const FALLBACK_PRIMARY_COLOR: [number, number, number] = [201, 106, 58];
+const RGB_PATTERN = /\d+(?:\.\d+)?/g;
+
+function parseRgbColor(value: string): [number, number, number] | null {
+	if (!value.toLowerCase().startsWith("rgb")) {
+		return null;
+	}
+
+	const channels = value.match(RGB_PATTERN);
+	if (!channels || channels.length < 3) {
+		return null;
+	}
+
+	const red = Number.parseFloat(channels[0]);
+	const green = Number.parseFloat(channels[1]);
+	const blue = Number.parseFloat(channels[2]);
+
+	if ([red, green, blue].some((channel) => Number.isNaN(channel))) {
+		return null;
+	}
+
+	return [Math.round(red), Math.round(green), Math.round(blue)];
+}
+
+function resolveCssColor(value: string): [number, number, number] | null {
+	if (typeof window === "undefined" || typeof document === "undefined") {
+		return null;
+	}
+
+	const probe = document.createElement("span");
+	probe.style.position = "fixed";
+	probe.style.opacity = "0";
+	probe.style.pointerEvents = "none";
+	probe.style.color = "";
+	probe.style.color = value;
+
+	if (!probe.style.color) {
+		return null;
+	}
+
+	document.body.appendChild(probe);
+	const resolved = window.getComputedStyle(probe).color;
+	document.body.removeChild(probe);
+
+	return parseRgbColor(resolved);
+}
+
+export function getPrimaryPdfColor(): [number, number, number] {
+	if (typeof window === "undefined" || typeof document === "undefined") {
+		return FALLBACK_PRIMARY_COLOR;
+	}
+
+	const rootStyles = window.getComputedStyle(document.documentElement);
+	const rawPrimary = rootStyles.getPropertyValue("--primary").trim();
+	const rawColorPrimary = rootStyles.getPropertyValue("--color-primary").trim();
+	const candidates = [rawPrimary, rawColorPrimary].filter(Boolean);
+
+	for (const candidate of candidates) {
+		const resolved = resolveCssColor(candidate);
+		if (resolved) {
+			return resolved;
+		}
+	}
+
+	return FALLBACK_PRIMARY_COLOR;
+}
+
+export async function loadExportLogoDataUrl(
+	logoPath = "/logo_text.png",
+): Promise<string | null> {
+	if (typeof window === "undefined" || typeof document === "undefined") {
+		return null;
+	}
+
+	return new Promise((resolve) => {
+		const image = new Image();
+		image.crossOrigin = "anonymous";
+
+		image.onload = () => {
+			const width = image.naturalWidth || image.width;
+			const height = image.naturalHeight || image.height;
+			if (!width || !height) {
+				resolve(null);
+				return;
+			}
+
+			const canvas = document.createElement("canvas");
+			canvas.width = width;
+			canvas.height = height;
+			const context = canvas.getContext("2d");
+			if (!context) {
+				resolve(null);
+				return;
+			}
+
+			context.drawImage(image, 0, 0, width, height);
+
+			try {
+				resolve(canvas.toDataURL("image/png"));
+			} catch {
+				resolve(null);
+			}
+		};
+
+		image.onerror = () => resolve(null);
+		image.src = logoPath;
+	});
+}