import { emitter, useScene, type ZoneNode } from "@pascal-app/core";
import { useViewer } from "@pascal-app/viewer";
import { Camera, Hexagon, Trash2 } from "lucide-react";
import { useState } from "react";
import { cn } from "@/lib/utils";
import useEditor from "@/store/use-editor";
import { ColorDot } from "@/components/ui/primitives/color-dot";
import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/primitives/popover";

function ZoneItem({ zone }: { zone: ZoneNode }) {
  const [cameraPopoverOpen, setCameraPopoverOpen] = useState(false);
  const deleteNode = useScene((state) => state.deleteNode);
  const updateNode = useScene((state) => state.updateNode);
  const selectedZoneId = useViewer((state) => state.selection.zoneId);
  const setSelection = useViewer((state) => state.setSelection);

  const isSelected = selectedZoneId === zone.id;

  const handleClick = () => {
    setSelection({ zoneId: zone.id });
  };

  const handleDelete = (e: React.MouseEvent) => {
    e.stopPropagation();
    deleteNode(zone.id);
    if (isSelected) {
      setSelection({ zoneId: null });
    }
  };

  const handleColorChange = (color: string) => {
    updateNode(zone.id, { color });
  };

  return (
    <div
      className={cn(
        "flex items-center h-8 cursor-pointer group/row text-sm px-2 mx-1 mb-0.5 select-none rounded-lg border transition-all duration-200",
        isSelected
          ? "bg-white dark:bg-accent/50 border-neutral-200/60 dark:border-border/50 shadow-[0_1px_2px_0px_rgba(0,0,0,0.05)] ring-1 ring-white/50 dark:ring-white/10 ring-inset text-foreground"
          : "border-transparent text-muted-foreground hover:bg-white/40 dark:hover:bg-accent/30 hover:border-neutral-200/50 dark:hover:border-border/40 hover:text-foreground"
      )}
      onClick={handleClick}
    >
      <span className="mr-2">
        <ColorDot color={zone.color} onChange={handleColorChange} />
      </span>
      <Hexagon className="w-3.5 h-3.5 mr-1.5 shrink-0" />
      <span className="truncate flex-1">{zone.name}</span>
      {/* Camera snapshot button */}
      <Popover open={cameraPopoverOpen} onOpenChange={setCameraPopoverOpen}>
        <PopoverTrigger asChild>
          <button
            className="relative opacity-0 group-hover/row:opacity-100 w-6 h-6 flex items-center justify-center rounded-md cursor-pointer hover:bg-black/5 dark:hover:bg-white/10 text-muted-foreground hover:text-foreground transition-colors"
            onClick={(e) => e.stopPropagation()}
            title="Camera snapshot"
          >
            <Camera className="w-3 h-3" />
            {zone.camera && (
              <span className="absolute top-0.5 right-0.5 w-1.5 h-1.5 rounded-full bg-primary" />
            )}
          </button>
        </PopoverTrigger>
        <PopoverContent
          side="right"
          align="start"
          className="w-auto p-1"
          onClick={(e) => e.stopPropagation()}
        >
          <div className="flex flex-col gap-0.5">
            {zone.camera && (
              <button
                className="flex items-center gap-2 px-2 py-1.5 text-sm rounded cursor-pointer text-popover-foreground hover:bg-accent text-left w-full"
                onClick={(e) => {
                  e.stopPropagation();
                  emitter.emit("camera-controls:view", { nodeId: zone.id });
                  setCameraPopoverOpen(false);
                }}
              >
                <Camera className="w-3.5 h-3.5" />
                View snapshot
              </button>
            )}
            <button
              className="flex items-center gap-2 px-2 py-1.5 text-sm rounded cursor-pointer text-popover-foreground hover:bg-accent text-left w-full"
              onClick={(e) => {
                e.stopPropagation();
                emitter.emit("camera-controls:capture", { nodeId: zone.id });
                setCameraPopoverOpen(false);
              }}
            >
              <Camera className="w-3.5 h-3.5" />
              {zone.camera ? "Update snapshot" : "Take snapshot"}
            </button>
            {zone.camera && (
              <button
                className="flex items-center gap-2 px-2 py-1.5 text-sm rounded cursor-pointer text-popover-foreground hover:bg-destructive hover:text-destructive-foreground text-left w-full"
                onClick={(e) => {
                  e.stopPropagation();
                  updateNode(zone.id, { camera: undefined });
                  setCameraPopoverOpen(false);
                }}
              >
                <Trash2 className="w-3.5 h-3.5" />
                Clear snapshot
              </button>
            )}
          </div>
        </PopoverContent>
      </Popover>
      <button
        className="opacity-0 group-hover/row:opacity-100 w-6 h-6 flex items-center justify-center rounded-md cursor-pointer hover:bg-black/5 dark:hover:bg-white/10 text-muted-foreground hover:text-foreground transition-colors"
        onClick={handleDelete}
      >
        <Trash2 className="w-3 h-3" />
      </button>
    </div>
  );
}

export function ZonePanel() {
  const nodes = useScene((state) => state.nodes);
  const currentLevelId = useViewer((state) => state.selection.levelId);
  const setPhase = useEditor((state) => state.setPhase);
  const setMode = useEditor((state) => state.setMode);
  const setTool = useEditor((state) => state.setTool);

  // Filter nodes to get zones for the current level
  const levelZones = Object.values(nodes).filter(
    (node): node is ZoneNode =>
      node.type === "zone" && node.parentId === currentLevelId
  );

  const handleAddZone = () => {
    if (currentLevelId) {
      setPhase("structure");
      setMode("build");
      setTool("zone");
    }
  };

  if (!currentLevelId) {
    return (
      <div className="px-3 py-4 text-sm text-muted-foreground">
        Select a level to view and create zones
      </div>
    );
  }

  return (
    <div className="py-1">
      {levelZones.length === 0 ? (
        <div className="px-3 py-4 text-sm text-muted-foreground">
          No zones on this level.{" "}
          <button
            className="text-primary hover:underline cursor-pointer"
            onClick={handleAddZone}
          >
            Add one
          </button>
        </div>
      ) : (
        levelZones.map((zone) => <ZoneItem key={zone.id} zone={zone} />)
      )}
    </div>
  );
}