const webglPlatformSource =
	String(navigator.userAgentData?.platform || navigator.platform || "") +
	" " +
	String(navigator.userAgent || "");
const webglPlatformText = webglPlatformSource.toLowerCase();
const webglPlatformKind = webglPlatformText.includes("android")
	? "android"
	: webglPlatformText.includes("iphone") ||
		  webglPlatformText.includes("ipad") ||
		  webglPlatformText.includes("ipod")
		? "ios"
		: webglPlatformText.includes("mac")
			? "mac"
			: webglPlatformText.includes("win")
				? "windows"
				: webglPlatformText.includes("cros")
					? "cros"
					: "linux";

const webglFallbackProfiles = {
	android: {
		vendor: "Qualcomm",
		renderer: "Adreno (TM) 640",
	},
	ios: {
		vendor: "Apple Inc.",
		renderer: "Apple GPU",
	},
	mac: {
		vendor: "Google Inc. (Intel Inc.)",
		renderer: "ANGLE (Intel Inc., Intel(R) Iris(TM) Plus Graphics 640 OpenGL Engine, OpenGL 4.1)",
	},
	windows: {
		vendor: "Google Inc. (Intel)",
		renderer: "ANGLE (Intel, Intel(R) UHD Graphics 620 Direct3D11 vs_5_0 ps_5_0, D3D11)",
	},
	cros: {
		vendor: "Google Inc. (Intel)",
		renderer: "ANGLE (Intel, Mesa Intel(R) UHD Graphics 620 (KBL GT2), OpenGL 4.6)",
	},
	linux: {
		vendor: "Google Inc. (Intel)",
		renderer: "ANGLE (Intel, Mesa Intel(R) UHD Graphics 620 (KBL GT2), OpenGL 4.6)",
	},
};
const webglFallbackProfile = webglFallbackProfiles[webglPlatformKind] || webglFallbackProfiles.linux;
const webglContextProfiles = new WeakMap();
const webglIsObjectKey = (value) =>
	(typeof value === "object" && value !== null) || typeof value === "function";

const webglLooksSoftware = (value) => {
	const text = String(value || "").toLowerCase();
	return (
		text.includes("swiftshader") ||
		text.includes("llvmpipe") ||
		text.includes("lavapipe") ||
		text.includes("software") ||
		text.includes("mesa offscreen") ||
		text.includes("google inc. (google)")
	);
};

const webglMatchesPlatform = (renderer) => {
	const text = String(renderer || "").toLowerCase();
	if (webglPlatformKind === "windows") {
		return !text.includes("apple") && !text.includes("mesa") && !text.includes("opengl engine");
	}
	if (webglPlatformKind === "mac") {
		return !text.includes("direct3d") && !text.includes("d3d") && !text.includes("mesa");
	}
	if (webglPlatformKind === "android") {
		return (
			text.includes("adreno") ||
			text.includes("mali") ||
			text.includes("powervr") ||
			text.includes("qualcomm")
		);
	}
	if (webglPlatformKind === "ios") {
		return text.includes("apple");
	}
	return !text.includes("direct3d") && !text.includes("d3d") && !text.includes("apple");
};

const webglGetContextProfile = (target, thisArg) => {
	if (!webglIsObjectKey(thisArg)) return webglFallbackProfile;
	const cached = Reflect_apply(Page_WeakMap_get, webglContextProfiles, [thisArg]);
	if (cached) return cached;

	let nativeVendor;
	let nativeRenderer;
	try {
		nativeVendor = Reflect_apply(target, thisArg, [0x9245]);
		nativeRenderer = Reflect_apply(target, thisArg, [0x9246]);
	} catch {}

	const nativeProfile =
		typeof nativeVendor === "string" &&
		typeof nativeRenderer === "string" &&
		nativeVendor &&
		nativeRenderer &&
		!webglLooksSoftware(nativeVendor) &&
		!webglLooksSoftware(nativeRenderer) &&
		webglMatchesPlatform(nativeRenderer)
			? { vendor: nativeVendor, renderer: nativeRenderer }
			: webglFallbackProfile;

	Reflect_apply(Page_WeakMap_set, webglContextProfiles, [thisArg, nativeProfile]);
	return nativeProfile;
};

const webglGetParameterHandler = {
	apply(target, thisArg, args) {
		const nativeValue = Reflect_apply(target, thisArg, args);
		const param = args[0];
		if (param === 0x1f00 && typeof nativeValue === "string") return "WebKit";
		if (param === 0x1f01 && typeof nativeValue === "string") return "WebKit WebGL";
		if ((param === 0x9245 || param === 0x9246) && typeof nativeValue === "string") {
			const profile = webglGetContextProfile(target, thisArg);
			return param === 0x9245 ? profile.vendor : profile.renderer;
		}
		return nativeValue;
	},
};

const webglFloatPrecisionTypes = {
	0x8df0: true,
	0x8df1: true,
	0x8df2: true,
};

const webglClonePrecisionFormat = (result, values) => {
	const ownKeys = Reflect_ownKeys(result);
	let hasRangeMin = false;
	let hasRangeMax = false;
	let hasPrecision = false;
	for (let index = 0; index < ownKeys.length; index += 1) {
		if (ownKeys[index] === "rangeMin") hasRangeMin = true;
		if (ownKeys[index] === "rangeMax") hasRangeMax = true;
		if (ownKeys[index] === "precision") hasPrecision = true;
	}
	if (!hasRangeMin || !hasRangeMax || !hasPrecision) return result;

	const clone = Object_create(Object_getPrototypeOf(result));
	for (let index = 0; index < ownKeys.length; index += 1) {
		const key = ownKeys[index];
		const descriptor = Object_getOwnPropertyDescriptor(result, key);
		if (!descriptor) return result;
		if (key === "rangeMin" || key === "rangeMax" || key === "precision") {
			if (!("value" in descriptor)) return result;
			descriptor.value = values[key];
		}
		try {
			Object_defineProperty(clone, key, descriptor);
		} catch {
			return result;
		}
	}
	return clone;
};

const webglGetShaderPrecisionFormatHandler = {
	apply(target, thisArg, args) {
		const result = Reflect_apply(target, thisArg, args);
		const precisionType = args[1];
		if (
			!result ||
			webglPlatformKind === "android" ||
			webglPlatformKind === "ios" ||
			!webglFloatPrecisionTypes[precisionType]
		) {
			return result;
		}

		const rangeMin = result.rangeMin;
		const rangeMax = result.rangeMax;
		const precision = result.precision;
		if (
			typeof rangeMin !== "number" ||
			typeof rangeMax !== "number" ||
			typeof precision !== "number"
		) {
			return result;
		}

		const values = {
			rangeMin: Math_max(rangeMin, 127),
			rangeMax: Math_max(rangeMax, 127),
			precision: Math_max(precision, 23),
		};
		if (
			values.rangeMin === rangeMin &&
			values.rangeMax === rangeMax &&
			values.precision === precision
		) {
			return result;
		}
		return webglClonePrecisionFormat(result, values);
	},
};

const webglInstallMethodProxy = (proto, name, handler) => {
	if (!proto) return;
	const descriptor = Object_getOwnPropertyDescriptor(proto, name);
	if (!descriptor || typeof descriptor.value !== "function") return;
	const proxy = new Window_Proxy(descriptor.value, handler);
	patchToString(proxy, name);
	try {
		Object_defineProperty(proto, name, {
			value: proxy,
			writable: descriptor.writable,
			configurable: descriptor.configurable,
			enumerable: descriptor.enumerable,
		});
	} catch {}
};

if (window.WebGLRenderingContext) {
	webglInstallMethodProxy(WebGLRenderingContext.prototype, "getParameter", webglGetParameterHandler);
	webglInstallMethodProxy(
		WebGLRenderingContext.prototype,
		"getShaderPrecisionFormat",
		webglGetShaderPrecisionFormatHandler,
	);
}
if (window.WebGL2RenderingContext) {
	webglInstallMethodProxy(WebGL2RenderingContext.prototype, "getParameter", webglGetParameterHandler);
	webglInstallMethodProxy(
		WebGL2RenderingContext.prototype,
		"getShaderPrecisionFormat",
		webglGetShaderPrecisionFormatHandler,
	);
}