export function Name() { return "HyperX Eve 1800"; }
export function VendorId() { return 0x03F0; }
export function ProductId() { return 0x08C2; }
export function Publisher() { return "Steve Ferguson"; }
export function Size() { return [21, 6]; }
export function DefaultPosition() { return [10, 100]; }
export function DefaultScale() { return 8.0; }
export function DeviceType() { return "keyboard"; }
export function ConflictingProcesses() { return ["NGenuity2.exe"]; }
/* global
shutdownColor:readonly
LightingMode:readonly
forcedColor:readonly
*/
export function ControllableParameters() {
	return [
		{"property":"shutdownColor", "group":"lighting", "label":"Shutdown Color", description: "This color is applied to the device when the System, or SignalRGB is shutting down", "min":"0", "max":"360", "type":"color", "default":"#000000"},
		{"property":"LightingMode", "group":"lighting", "label":"Lighting Mode", description: "Determines where the device's RGB comes from. Canvas will pull from the active Effect, while Forced will override it to a specific color", "type":"combobox", "values":["Canvas", "Forced"], "default":"Canvas"},
		{"property":"forcedColor", "group":"lighting", "label":"Forced Color", description: "The color used when 'Forced' Lighting Mode is enabled", "min":"0", "max":"360", "type":"color", "default":"#009bde"},
	];
}

// The Eve 1800 has 10 lighting zones, each a vertical strip of the board,
// ordered left to right. X positions follow the physical key columns
// (roughly one unit per key) so effects sweep across the board evenly.
const vLedNames = [
	"Zone 1 (Esc, F1-F4, Tab-Ctrl)",
	"Zone 2 (2-4, E R, S D X)",
	"Zone 3 (F5-F8, 5 6, T F G C V)",
	"Zone 4 (7, Y H, B N, Space)",
	"Zone 5 (8 9, U I J K M)",
	"Zone 6 (0, O P L ;, , . /, Alt)",
	"Zone 7 (- = Backspace, [ ] \\, Enter, Shift, Fn)",
	"Zone 8 (F9-F12, Nav, Arrows)",
	"Zone 9 (Numpad Left)",
	"Zone 10 (Numpad Right)",
];

const vLedPositions = [
	[1, 3], [3, 3], [5, 3], [7, 3], [9, 3],
	[11, 3], [13, 3], [15, 3], [17, 3], [19, 3],
];

export function LedNames() { return vLedNames; }
export function LedPositions() { return vLedPositions; }

// Protocol (0xFF90 vendor interface, 64-byte reports, report ID 0x44):
//   44 02 <chunk> 00 + up to 20 x RGB   colour data
//   44 01 <chunk count>                 apply ("commit") the frame
// The commit must come AFTER the data. These are live writes; nothing is
// saved to the keyboard. Without fresh frames the keyboard eventually falls
// back to its onboard effect, so we re-send periodically even when idle.
const KEEPALIVE_MS = 500;
let lastPacket = [];
let lastSendTime = 0;

export function Initialize() {
	lastPacket = [];
	lastSendTime = 0;
}

export function Render() {
	sendColors();
}

export function Shutdown(SystemSuspending) {
	const color = SystemSuspending ? "#000000" : shutdownColor;
	sendColors(color, true);
}

function sendColors(overrideColor, force = false) {
	const packet = [0x44, 0x02, 0x00, 0x00];

	for (let iIdx = 0; iIdx < vLedPositions.length; iIdx++) {
		let color;

		if (overrideColor) {
			color = hexToRgb(overrideColor);
		} else if (LightingMode === "Forced") {
			color = hexToRgb(forcedColor);
		} else {
			color = device.color(vLedPositions[iIdx][0], vLedPositions[iIdx][1]);
		}

		packet.push(color[0], color[1], color[2]);
	}

	const now = Date.now();

	if (!force && arraysEqual(packet, lastPacket) && now - lastSendTime < KEEPALIVE_MS) {
		return;
	}

	device.write(packet, 64);
	device.write([0x44, 0x01, 0x01], 64);

	lastPacket = packet;
	lastSendTime = now;
}

function arraysEqual(a, b) {
	if (a.length !== b.length) {
		return false;
	}

	for (let i = 0; i < a.length; i++) {
		if (a[i] !== b[i]) {
			return false;
		}
	}

	return true;
}

function hexToRgb(hex) {
	const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
	const colors = [];
	colors[0] = parseInt(result[1], 16);
	colors[1] = parseInt(result[2], 16);
	colors[2] = parseInt(result[3], 16);

	return colors;
}

export function Validate(endpoint) {
	return endpoint.interface === 2 && endpoint.usage === 0xFF00 && endpoint.usage_page === 0xFF90;
}

export function ImageUrl() {
	return "https://assets.signalrgb.com/devices/default/keyboards/full-size-keyboard-render.png";
}