"use client";

import { useId, type ChangeEvent } from "react";
import { Crosshair } from "lucide-react";

import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
import {
  AIM_TRAINER_CROSSHAIR_SCALE_MAX,
  AIM_TRAINER_CROSSHAIR_SCALE_MIN,
  AIM_TRAINER_CROSSHAIR_SCALE_STEP,
  AIM_TRAINER_CROSSHAIR_STYLES,
  normalizeAimTrainerCrosshairScale,
  type AimTrainerCrosshairPrefs,
  type AimTrainerCrosshairStyle,
} from "./crosshair";

const STYLE_LABELS: Record<AimTrainerCrosshairStyle, string> = {
  classic: "Classic",
  dot: "Dot",
  cross: "Cross",
  circle: "Circle",
  chevron: "Chevron",
};

const COLOR_PRESETS = [
  "#d8d3b6",
  "#4ade80",
  "#f87171",
  "#22d3ee",
  "#e879f9",
  "#ffffff",
] as const;

function CrosshairPreview({ style }: { style: AimTrainerCrosshairStyle }) {
  const lineProps = {
    stroke: "currentColor",
    strokeWidth: 1.75,
    strokeLinecap: "butt" as const,
    strokeLinejoin: "miter" as const,
  };

  switch (style) {
    case "classic":
      return (
        <svg viewBox="-12 -12 24 24" className="size-5" aria-hidden="true">
          <path d="M0 -11V-3 M0 3V11 M-11 0H-3 M3 0H11" fill="none" {...lineProps} />
          <circle cx="0" cy="0" r="0.75" fill="currentColor" />
        </svg>
      );
    case "dot":
      return (
        <svg viewBox="-12 -12 24 24" className="size-5" aria-hidden="true">
          <circle cx="0" cy="0" r="1.5" fill="currentColor" />
        </svg>
      );
    case "cross":
      return (
        <svg viewBox="-12 -12 24 24" className="size-5" aria-hidden="true">
          <path d="M0 -11V11 M-11 0H11" fill="none" {...lineProps} />
        </svg>
      );
    case "circle":
      return (
        <svg viewBox="-12 -12 24 24" className="size-5" aria-hidden="true">
          <circle cx="0" cy="0" r="9" fill="none" {...lineProps} />
          <circle cx="0" cy="0" r="0.75" fill="currentColor" />
        </svg>
      );
    case "chevron":
      return (
        <svg viewBox="-12 -12 24 24" className="size-5" aria-hidden="true">
          <path d="M-5 0L0 -6L5 0" fill="none" {...lineProps} />
          <circle cx="0" cy="0" r="0.75" fill="currentColor" />
        </svg>
      );
  }
}

export function CrosshairSettings({
  value,
  onPrefsChangeAction,
}: {
  readonly value: AimTrainerCrosshairPrefs;
  readonly onPrefsChangeAction: (prefs: AimTrainerCrosshairPrefs) => void;
}) {
  const colorInputId = useId();

  const handleCustomColorChange = (event: ChangeEvent<HTMLInputElement>) => {
    onPrefsChangeAction({ ...value, color: event.target.value });
  };

  const handleScaleChange = (event: ChangeEvent<HTMLInputElement>) => {
    onPrefsChangeAction({
      ...value,
      scale: normalizeAimTrainerCrosshairScale(Number(event.target.value)),
    });
  };

  return (
    <Popover>
      <PopoverTrigger asChild>
        <Button type="button" variant="ghost" size="icon" aria-label="Crosshair settings">
          <Crosshair aria-hidden="true" className="size-4" />
        </Button>
      </PopoverTrigger>
      <PopoverContent align="end" collisionPadding={8} className="w-[300px] p-3">
        <div className="flex flex-col gap-3">
          <div className="flex flex-col gap-2">
            <span className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
              Crosshair style
            </span>
            <div className="grid grid-cols-5 gap-1">
              {AIM_TRAINER_CROSSHAIR_STYLES.map((style) => (
                <Button
                  key={style}
                  type="button"
                  variant={value.style === style ? "default" : "outline"}
                  className="h-auto min-w-0 flex-col gap-1 whitespace-normal px-1 py-1.5 text-center text-xs"
                  aria-label={`${STYLE_LABELS[style]} crosshair`}
                  aria-pressed={value.style === style}
                  onClick={() => onPrefsChangeAction({ ...value, style })}
                >
                  <CrosshairPreview style={style} />
                  <span>{STYLE_LABELS[style]}</span>
                </Button>
              ))}
            </div>
          </div>

          <div className="flex flex-col gap-2">
            <span className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
              Crosshair color
            </span>
            <div className="flex flex-wrap items-center gap-1.5">
              {COLOR_PRESETS.map((color) => {
                const selected = value.color.toLowerCase() === color.toLowerCase();
                return (
                  <Button
                    key={color}
                    type="button"
                    variant="ghost"
                    size="icon"
                    className={
                      selected ? "size-7 p-1 ring-2 ring-ring ring-offset-2" : "size-7 p-1"
                    }
                    aria-label={`Use ${color} crosshair color`}
                    aria-pressed={selected}
                    onClick={() => onPrefsChangeAction({ ...value, color })}
                  >
                    <span
                      aria-hidden="true"
                      className="size-4 rounded-sm border border-black/30"
                      style={{ backgroundColor: color }}
                    />
                  </Button>
                );
              })}
            </div>
            <label
              htmlFor={colorInputId}
              className="flex w-full items-center justify-between gap-3 text-xs text-muted-foreground"
            >
              <span>Custom</span>
              <Input
                id={colorInputId}
                type="color"
                value={value.color}
                aria-label="Custom crosshair color"
                className="h-8 w-10 cursor-pointer p-1"
                onChange={handleCustomColorChange}
              />
            </label>
          </div>

          <div className="flex flex-col gap-2">
            <div className="flex items-center justify-between gap-3">
              <span className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
                Crosshair scale
              </span>
              <span className="font-mono text-xs tabular-nums text-muted-foreground">
                {value.scale.toFixed(1)}x
              </span>
            </div>
            <input
              type="range"
              min={AIM_TRAINER_CROSSHAIR_SCALE_MIN}
              max={AIM_TRAINER_CROSSHAIR_SCALE_MAX}
              step={AIM_TRAINER_CROSSHAIR_SCALE_STEP}
              value={value.scale}
              aria-label="Crosshair scale"
              className="h-4 w-full cursor-pointer accent-primary"
              onChange={handleScaleChange}
            />
          </div>
        </div>
      </PopoverContent>
    </Popover>
  );
}