"use client";
import { parseAsString, useQueryStates } from "nuqs";
import {
useCallback,
useEffect,
useId,
useMemo,
useRef,
useState,
} from "react";
import {
getMobileInputClasses,
MobileButtonGroup,
MobileCard,
MobileControlPanel,
MobileFormGroup,
MobileToolWrapper,
} from "@/components/mobile-tool-wrapper";
import { Input } from "@/components/ui/input";
import {
Select,
SelectContent,
SelectItem,
SelectTrigger,
SelectValue,
} from "@/components/ui/select";
import { useResponsive } from "@/hooks/use-breakpoint";
import { getRadius } from "@/lib/radius";
import { DownloadActions } from "./components/download-actions";
import { LogoOptionsPanel } from "./components/logo-options-panel";
import { Preview } from "./components/preview";
import { rebuildQr } from "./qr-render";
import { type QrOptions, STYLES } from "./qr-styles";
// Constants for magic numbers
const DEFAULT_LOGO_SIZE_PERCENT = 20;
const DEFAULT_LOGO_STROKE_PX = 20;
const CENTER_POSITION_THRESHOLD = 0.01;
const CENTER_POSITION_VALUE = 0.5;
const BOTTOM_RIGHT_THRESHOLD = 0.75;
// Stable position objects to avoid inline object creation
const CENTER_POSITION = { x: 0.5, y: 0.5 };
const BOTTOM_RIGHT_POSITION = { x: 0.82, y: 0.82 };
export function QrClient() {
const urlId = useId();
const styleId = useId();
const { isMobileOnly } = useResponsive();
const [mounted, setMounted] = useState(false);
const containerRef = useRef<HTMLDivElement>(null);
const [svg, setSvg] = useState<SVGSVGElement | null>(null);
const [fileName] = useState("qr-code");
const [logoSvgContent, setLogoSvgContent] = useState<string | null>(null);
const [logoSizePercent] = useState<number>(DEFAULT_LOGO_SIZE_PERCENT);
const [logoPosition, setLogoPosition] = useState<{ x: number; y: number }>({
x: CENTER_POSITION_VALUE,
y: CENTER_POSITION_VALUE,
});
const [logoStrokePx] = useState<number>(DEFAULT_LOGO_STROKE_PX);
const [qs, setQs] = useQueryStates(
{
data: parseAsString.withDefault("https://instagram.com/kalypsodesigns"),
style: parseAsString.withDefault(STYLES[0]?.id || "slate-ember"),
},
{ history: "replace" },
);
const DEFAULT_SIZE = 768;
const [options, setOptions] = useState<QrOptions>({
data: qs.data,
size: DEFAULT_SIZE,
styleId: qs.style,
padding: 10,
});
useEffect(() => setMounted(true), []);
useEffect(() => {
setOptions((prev) => ({
...prev,
data: qs.data,
styleId: qs.style,
padding: 10,
}));
}, [qs]);
const rebuild = useCallback(async () => {
if (!containerRef.current) {
return;
}
const { svg: newSvg } = await rebuildQr({
container: containerRef.current,
options,
logoSvgContent,
logoSizePercent,
logoStrokePx,
logoPosition,
});
setSvg(newSvg);
}, [options, logoSvgContent, logoSizePercent, logoStrokePx, logoPosition]);
useEffect(() => {
if (!mounted) {
return;
}
rebuild();
}, [mounted, rebuild]);
const setPositionCenter = useCallback(() => {
setLogoPosition(CENTER_POSITION);
}, []);
const setPositionBottomRight = useCallback(() => {
setLogoPosition(BOTTOM_RIGHT_POSITION);
}, []);
const positionLabel = useMemo(() => {
const { x, y } = logoPosition;
if (
Math.abs(x - CENTER_POSITION_VALUE) < CENTER_POSITION_THRESHOLD &&
Math.abs(y - CENTER_POSITION_VALUE) < CENTER_POSITION_THRESHOLD
) {
return "Center";
}
if (x > BOTTOM_RIGHT_THRESHOLD && y > BOTTOM_RIGHT_THRESHOLD) {
return "Bottom right";
}
return "Custom";
}, [logoPosition]);
if (!mounted) {
return (
<div className="flex min-h-[400px] items-center justify-center">
<div className="text-muted-foreground text-sm">Loading...</div>
</div>
);
}
return (
<MobileToolWrapper>
<Preview containerRef={containerRef} />
<DownloadActions fileName={fileName} size={options.size} svg={svg} />
<MobileCard className={isMobileOnly ? "mt-2" : "mt-6"}>
<MobileControlPanel>
<MobileFormGroup label="Content URL or Text" labelId={urlId}>
<Input
className={getMobileInputClasses(isMobileOnly)}
id={urlId}
onChange={(e) => {
setOptions((o) => ({ ...o, data: e.target.value }));
setQs({ data: e.target.value });
}}
placeholder="https://…"
value={options.data}
/>
</MobileFormGroup>
<MobileFormGroup label="Style" labelId={styleId}>
<Select onValueChange={(v) => setQs({ style: v })} value={qs.style}>
<SelectTrigger
className={`w-full ${getMobileInputClasses(isMobileOnly)}`}
id={styleId}
>
<SelectValue />
</SelectTrigger>
<SelectContent>
{STYLES.map((s) => (
<SelectItem key={s.id} value={s.id}>
{s.name}
</SelectItem>
))}
</SelectContent>
</Select>
</MobileFormGroup>
</MobileControlPanel>
{logoSvgContent && (
<MobileControlPanel>
<LogoOptionsPanel
logoSvgContent={logoSvgContent}
onSetLogoContent={(content) => {
setLogoSvgContent(content);
}}
/>
<MobileFormGroup label="Logo position">
<div
className={`${getRadius("medium")} overflow-hidden border bg-muted/30 p-3 ${isMobileOnly ? "p-2" : ""}`}
>
<div
className={`mb-2 text-muted-foreground text-xs ${isMobileOnly ? "mb-1.5 text-xs" : ""}`}
>
Current: <span className="font-medium">{positionLabel}</span>
</div>
<MobileButtonGroup>
<button
className={`h-8 ${getRadius("buttonSmall")} border px-2.5 py-1.5 text-xs transition-colors ${
Math.abs(logoPosition.x - CENTER_POSITION_VALUE) <
CENTER_POSITION_THRESHOLD &&
Math.abs(logoPosition.y - CENTER_POSITION_VALUE) <
CENTER_POSITION_THRESHOLD
? "border-primary bg-primary text-primary-foreground"
: "border-border bg-background hover:bg-muted"
}`}
onClick={setPositionCenter}
type="button"
>
Center
</button>
<button
className={`h-8 ${getRadius("buttonSmall")} border px-2.5 py-1.5 text-xs transition-colors ${
logoPosition.x > BOTTOM_RIGHT_THRESHOLD &&
logoPosition.y > BOTTOM_RIGHT_THRESHOLD
? "border-primary bg-primary text-primary-foreground"
: "border-border bg-background hover:bg-muted"
}`}
onClick={setPositionBottomRight}
type="button"
>
Bottom right
</button>
</MobileButtonGroup>
</div>
</MobileFormGroup>
</MobileControlPanel>
)}
{!logoSvgContent && (
<LogoOptionsPanel
logoSvgContent={logoSvgContent}
onSetLogoContent={(content) => {
setLogoSvgContent(content);
}}
/>
)}
</MobileCard>
</MobileToolWrapper>
);
}
