/** A `cover.*` device card ("Rollo"). Real covers report their own movement and
 * position, so this just reflects HA's state - no client-side movement animation like
 * the design mockup used (it had no real backend to poll). */

import type { HaDevice, HaEntityState } from "../api/types";
import {
  SHUTTER_PRESETS,
  closedLabelFor,
  closedPercentFromPosition,
  positionFromClosedPercent,
} from "../lib/shutter";

//: Home Assistant's `CoverEntityFeature.SET_POSITION` bit.
const SUPPORT_SET_POSITION = 4;

interface Props {
  device: HaDevice;
  state: HaEntityState | undefined;
  callService: (domain: string, service: string, body: Record<string, unknown>) => Promise<void>;
  optimistic: (entityId: string, patch: Partial<HaEntityState>) => void;
  onManualChange: () => void;
}

export function ShutterCard({ device, state, callService, optimistic, onManualChange }: Props) {
  const position = state?.attributes.current_position as number | undefined;
  const supportedFeatures = (state?.attributes.supported_features as number | undefined) ?? 0;
  const supportsPosition = position != null || (supportedFeatures & SUPPORT_SET_POSITION) !== 0;
  const closedPercent = closedPercentFromPosition(position ?? 0);

  const moving = state?.state === "opening" ? "up" : state?.state === "closing" ? "down" : null;
  const statusLabel =
    moving === "down" ? "Fährt runter …" : moving === "up" ? "Fährt hoch …" : closedLabelFor(closedPercent);

  const setPosition = (target: number) => {
    onManualChange();
    optimistic(device.entity_id, {
      attributes: { ...state?.attributes, current_position: target },
    });
    void callService("cover", "set_cover_position", {
      entity_id: device.entity_id,
      position: target,
    });
  };

  const open = () => {
    onManualChange();
    void callService("cover", "open_cover", { entity_id: device.entity_id });
  };
  const close = () => {
    onManualChange();
    void callService("cover", "close_cover", { entity_id: device.entity_id });
  };
  const stop = () => {
    onManualChange();
    void callService("cover", "stop_cover", { entity_id: device.entity_id });
  };

  return (
    <div className="room-card">
      <div style={{ display: "flex", alignItems: "center", gap: 14 }}>
        <div
          style={{
            width: 56,
            height: 56,
            borderRadius: 16,
            display: "flex",
            alignItems: "center",
            justifyContent: "center",
            flex: "none",
            background: "oklch(88% 0.03 300)",
            color: "oklch(35% 0.05 300)",
          }}
        >
          <BlindsIcon />
        </div>
        <div>
          <div style={{ fontSize: 19, fontWeight: 900, color: "var(--room-ink)" }}>
            {device.name ?? "Rollo"}
          </div>
          <div style={{ fontSize: 13, fontWeight: 700, color: "oklch(45% 0.03 300 / .8)" }}>
            {statusLabel}
          </div>
        </div>
      </div>

      <div style={{ display: "flex", gap: 18, marginTop: 16 }}>
        <div
          style={{
            width: 104,
            height: 140,
            flex: "none",
            borderRadius: 12,
            border: "3px solid oklch(35% 0.04 300)",
            overflow: "hidden",
            position: "relative",
            background: "linear-gradient(180deg, oklch(82% 0.08 220), oklch(70% 0.09 200))",
          }}
        >
          <div
            style={{
              position: "absolute",
              top: 0,
              left: 0,
              right: 0,
              height: `${closedPercent}%`,
              background:
                "repeating-linear-gradient(180deg, oklch(70% 0.03 300) 0px, oklch(70% 0.03 300) 9px, oklch(58% 0.03 300) 9px, oklch(58% 0.03 300) 12px)",
              boxShadow: "0 4px 10px oklch(20% 0.03 300 / .4)",
              transition: "height .2s linear",
            }}
          />
        </div>

        <div style={{ flex: 1, display: "flex", flexDirection: "column", gap: 10 }}>
          {supportsPosition && (
            <div style={{ display: "grid", gridTemplateColumns: "1fr 1fr", gap: 8 }}>
              {SHUTTER_PRESETS.map((preset) => {
                const active = closedLabelFor(closedPercent) === preset.label;
                return (
                  <button
                    key={preset.label}
                    onClick={() => setPosition(positionFromClosedPercent(preset.closedPercent))}
                    style={{
                      height: 48,
                      border: "none",
                      borderRadius: 14,
                      cursor: "pointer",
                      fontWeight: 800,
                      fontSize: 14,
                      background: active ? "var(--room-accent)" : "oklch(89% 0.02 300)",
                      color: active ? "#fff" : "oklch(28% 0.04 300)",
                    }}
                  >
                    {preset.label}
                  </button>
                );
              })}
            </div>
          )}

          <div style={{ display: "grid", gridTemplateColumns: "1fr 1fr 1fr", gap: 8 }}>
            <button
              onClick={open}
              style={{
                height: 52,
                border: "none",
                borderRadius: 14,
                cursor: "pointer",
                fontWeight: 900,
                fontSize: 20,
                background: moving === "up" ? "var(--room-accent)" : "oklch(89% 0.02 300)",
                color: moving === "up" ? "#fff" : "oklch(28% 0.04 300)",
              }}
            >
              ▲
            </button>
            <button
              onClick={stop}
              style={{
                height: 52,
                border: "none",
                borderRadius: 14,
                cursor: "pointer",
                fontWeight: 900,
                fontSize: 18,
                background: "oklch(65% 0.18 25)",
                color: "#fff",
              }}
            >
              ■
            </button>
            <button
              onClick={close}
              style={{
                height: 52,
                border: "none",
                borderRadius: 14,
                cursor: "pointer",
                fontWeight: 900,
                fontSize: 20,
                background: moving === "down" ? "var(--room-accent)" : "oklch(89% 0.02 300)",
                color: moving === "down" ? "#fff" : "oklch(28% 0.04 300)",
              }}
            >
              ▼
            </button>
          </div>
        </div>
      </div>
    </div>
  );
}

function BlindsIcon() {
  return (
    <svg viewBox="0 0 48 48" width="34" height="34" aria-hidden="true">
      <rect x="7" y="7" width="34" height="34" rx="4" fill="none" stroke="currentColor" strokeWidth="3" />
      <path d="M7 16h34M7 24h34M7 32h34" stroke="currentColor" strokeWidth="2.5" />
    </svg>
  );
}