"use client";

import Link from "next/link";
import {
  Item,
  ItemContent,
  ItemDescription,
  ItemHeader,
  ItemMedia,
  ItemTitle,
} from "@/components/ui/item";
import { CapacityBar } from "@/components/frontend/storage/CapacityBar";
import {
  getCategoryLabel,
  getFunctionTypeLabel,
  getGridSlots,
  getResourceCount,
  calculateStoredMass,
  calculateUtilization,
} from "@/lib/logistics";
import { GameStructure, Faction, Structure, Resource } from "@/payload-types";
import {
  BoxIcon,
  Building2Icon,
  ChevronRightIcon,
  Grid3x3Icon,
  MapPinIcon,
} from "lucide-react";

interface StructureCardProps {
  structure: GameStructure & {
    type: Structure;
    faction?: Faction | null;
  };
}

export function StructureCard({ structure }: StructureCardProps) {
  const structureType = structure.type;
  const storedResources = structure.storedResources ?? [];

  const currentMass = calculateStoredMass(storedResources);
  const utilization = calculateUtilization(structureType, storedResources);
  const resourceCount = getResourceCount(storedResources);
  const gridSlots = getGridSlots(structureType);
  const functionLabel = getFunctionTypeLabel(structureType.functionType);

  return (
    <Link href={`/logistics/structures/${structure.id}`}>
      <Item variant="outline" className="cursor-pointer group">
        <ItemHeader>
          <div className="flex items-center gap-2">
            <ItemMedia variant="icon">
              <Building2Icon />
            </ItemMedia>
            <ItemTitle className="flex flex-col">
              <span>{structure.name}</span>
              <span className="text-xs font-normal text-muted-foreground">
                {structureType.name}
              </span>
            </ItemTitle>
          </div>
          <div className="flex items-center gap-2">
            {structure.faction && typeof structure.faction === "object" && (
              <span className="text-xs text-muted-foreground bg-muted px-2 py-0.5 rounded-md">
                {structure.faction.name}
              </span>
            )}
            <span className="text-xs text-muted-foreground bg-muted px-2 py-0.5 rounded-md">
              {getCategoryLabel(structureType.category)}
            </span>
          </div>
        </ItemHeader>
        <ItemContent>
          <div className="flex flex-col gap-3 w-full">
            <CapacityBar
              utilization={utilization}
              currentMass={currentMass}
              maxMass={structureType.maxCapacityMass ?? null}
            />
            <div className="flex items-center justify-between text-xs text-muted-foreground">
              <div className="flex items-center gap-3">
                <span className="flex items-center gap-1">
                  <BoxIcon className="size-3" />
                  {resourceCount} resource{resourceCount !== 1 ? "s" : ""}
                </span>
                {gridSlots !== null && (
                  <span className="flex items-center gap-1">
                    <Grid3x3Icon className="size-3" />
                    {structureType.xSize}×{structureType.ySize} grid
                  </span>
                )}
                {functionLabel && (
                  <span className="flex items-center gap-1">
                    {functionLabel}
                  </span>
                )}
              </div>
              {structure.coordinates && (
                <span className="flex items-center gap-1">
                  <MapPinIcon className="size-3" />
                  {structure.coordinates[0].toFixed(1)}, {structure.coordinates[1].toFixed(1)}
                </span>
              )}
            </div>
          </div>
        </ItemContent>
        <ItemDescription>
          {resourceCount === 0
            ? "Empty — no resources stored."
            : `${resourceCount} resource type${resourceCount !== 1 ? "s" : ""} stored`}
        </ItemDescription>
        <span className="text-xs text-muted-foreground group-hover:text-primary transition-colors flex items-center gap-1">
          View details <ChevronRightIcon className="size-3" />
        </span>
      </Item>
    </Link>
  );
}