feat(frontend): add learning, community, and profile feature components
Cover verified playback, quizzes, skill tree, certificates, events, league, and registration UI.
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"use client";
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import { useEffect, useRef, useState } from "react";
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import { Check, Loader2, Scan, X, ZoomIn } from "lucide-react";
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import {
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Dialog,
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DialogContent,
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DialogFooter,
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DialogHeader,
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DialogTitle,
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} from "@/components/ui/dialog";
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import { Button } from "@/components/ui/button";
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const OUTPUT_SIZE = 512;
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function clamp(v: number, lo: number, hi: number) {
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return Math.min(hi, Math.max(lo, v));
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}
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export function AvatarCropDialog({
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file,
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busy,
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onCancel,
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onCrop,
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}: {
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file: File | null;
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busy?: boolean;
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onCancel: () => void;
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onCrop: (blob: Blob) => Promise<void> | void;
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}) {
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const boxRef = useRef<HTMLDivElement>(null);
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const [img, setImg] = useState<{ el: HTMLImageElement; w: number; h: number } | null>(null);
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const [C, setC] = useState(280);
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const [scale, setScale] = useState(1);
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const [pan, setPan] = useState({ x: 0, y: 0 });
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const drag = useRef<{ sx: number; sy: number; px: number; py: number } | null>(null);
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useEffect(() => {
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if (!file) return;
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const url = URL.createObjectURL(file);
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const el = new Image();
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el.onload = () => setImg({ el, w: el.naturalWidth, h: el.naturalHeight });
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el.src = url;
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return () => URL.revokeObjectURL(url);
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}, [file]);
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useEffect(() => {
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if (!img) return;
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const box = boxRef.current;
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const size = Math.min(box?.clientWidth ?? 280, 320);
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setC(size);
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const minScale = size / Math.min(img.w, img.h);
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setScale(minScale);
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setPan({ x: (size - img.w * minScale) / 2, y: (size - img.h * minScale) / 2 });
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}, [img]);
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const minScale = img ? C / Math.min(img.w, img.h) : 1;
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const maxScale = minScale * 6;
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const clampPan = (x: number, y: number, s: number) => ({
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x: clamp(x, C - (img?.w ?? C) * s, 0),
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y: clamp(y, C - (img?.h ?? C) * s, 0),
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});
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const onPointerDown = (e: React.PointerEvent<HTMLDivElement>) => {
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(e.target as HTMLElement).setPointerCapture(e.pointerId);
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drag.current = { sx: e.clientX, sy: e.clientY, px: pan.x, py: pan.y };
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};
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const onPointerMove = (e: React.PointerEvent<HTMLDivElement>) => {
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if (!drag.current) return;
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const dx = e.clientX - drag.current.sx;
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const dy = e.clientY - drag.current.sy;
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setPan(clampPan(drag.current.px + dx, drag.current.py + dy, scale));
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};
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const onPointerUp = () => {
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drag.current = null;
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};
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const zoom = (s: number) => {
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const next = clamp(s, minScale, maxScale);
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const cx = C / 2;
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const cy = C / 2;
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const imgX = (cx - pan.x) / scale;
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const imgY = (cy - pan.y) / scale;
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setPan(clampPan(cx - imgX * next, cy - imgY * next, next));
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setScale(next);
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};
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const setZoomIn = () => {
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if (!img) return;
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const ms = C / Math.min(img.w, img.h);
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setScale(ms);
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setPan({ x: (C - img.w * ms) / 2, y: (C - img.h * ms) / 2 });
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};
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const confirm = async () => {
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if (!img) return;
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const cropSize = C / scale;
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let cx = -pan.x / scale;
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let cy = -pan.y / scale;
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cx = clamp(cx, 0, img.w - cropSize);
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cy = clamp(cy, 0, img.h - cropSize);
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const canvas = document.createElement("canvas");
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canvas.width = OUTPUT_SIZE;
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canvas.height = OUTPUT_SIZE;
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const ctx = canvas.getContext("2d");
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if (!ctx) return;
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ctx.imageSmoothingEnabled = true;
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ctx.imageSmoothingQuality = "high";
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ctx.drawImage(img.el, cx, cy, cropSize, cropSize, 0, 0, OUTPUT_SIZE, OUTPUT_SIZE);
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const blob = await new Promise<Blob | null>((resolve) =>
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canvas.toBlob(resolve, "image/png")
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);
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if (blob) await onCrop(blob);
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};
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const zoomPct = Math.round((scale / maxScale) * 100);
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return (
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<Dialog open={!!file && !!img} onOpenChange={(o) => !o && !busy && onCancel()}>
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<DialogContent className="max-w-sm rounded-2xl">
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<DialogHeader>
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<DialogTitle>تنظیم عکس آواتار</DialogTitle>
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</DialogHeader>
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<div className="relative mx-auto aspect-square w-full max-w-[280px]" ref={boxRef}>
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{img ? (
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<>
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<div
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className="absolute inset-0 touch-none select-none overflow-hidden rounded-full ring-2 ring-border"
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onPointerDown={onPointerDown}
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onPointerMove={onPointerMove}
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onPointerUp={onPointerUp}
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onPointerCancel={onPointerUp}
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style={{ cursor: "move" }}
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>
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<img
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src={img.el.src}
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alt="پیشنمایش آواتار"
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draggable={false}
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className="pointer-events-none select-none"
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style={{
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position: "absolute",
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left: 0,
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top: 0,
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transform: `translate(${pan.x}px, ${pan.y}px) scale(${scale})`,
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transformOrigin: "0 0",
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width: img.w,
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height: img.h,
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maxWidth: "none",
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maxHeight: "none",
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}}
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/>
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<div
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className="pointer-events-none absolute inset-0 rounded-full"
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style={{
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background: "rgba(0,0,0,0.45)",
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WebkitMaskImage: "radial-gradient(circle at center, transparent 49.2%, black 50%)",
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maskImage: "radial-gradient(circle at center, transparent 49.2%, black 50%)",
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}}
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/>
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</div>
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<span className="pointer-events-none absolute inset-0 rounded-full ring-2 ring-primary/70 ring-offset-2 ring-offset-background" />
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</>
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) : (
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<div className="absolute inset-0 grid place-items-center text-sm text-muted-foreground">
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<Loader2 className="h-6 w-6 animate-spin" />
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</div>
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)}
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</div>
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<div className="flex items-center gap-3 px-1">
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<ZoomIn className="h-4 w-4 shrink-0 text-muted-foreground" />
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<input
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type="range"
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min={17}
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max={100}
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value={zoomPct}
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onChange={(e) => zoom((Number(e.target.value) / 100) * maxScale)}
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aria-label="بزرگنمایی"
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className="w-full accent-primary"
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/>
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</div>
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<DialogFooter className="sm:space-x-0 sm:space-x-reverse sm:justify-between">
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<Button variant="outline" onClick={onCancel} disabled={busy}>
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<X /> انصراف
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</Button>
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<div className="flex items-center gap-2">
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<Button variant="ghost" size="sm" onClick={setZoomIn} disabled={busy} title="تنظیم خودکار">
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<Scan /> برازش
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</Button>
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<Button onClick={confirm} disabled={busy || !img}>
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{busy ? <Loader2 className="h-4 w-4 animate-spin" /> : <Check />}
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{busy ? "در حال آپلود…" : "تأیید و ذخیره"}
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</Button>
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</div>
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</DialogFooter>
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</DialogContent>
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</Dialog>
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);
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}
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