'use client';

import { useState, useMemo } from 'react';
import { Button } from '@/components/ui/button';
import { Progress } from '@/components/ui/progress';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Badge } from '@/components/ui/badge';
import { ScrollArea } from '@/components/ui/scroll-area';
import { Separator } from '@/components/ui/separator';
import { Anvil, Hammer, Package } from 'lucide-react';
import {
  FABRICATOR_RECIPES,
  getRecipesByManaType,
  canCraftRecipe,
} from '@/lib/game/data/fabricator-recipes';
import { LOOT_DROPS, LOOT_RARITY_COLORS } from '@/lib/game/data/loot-drops';
import { useCraftingStore, useManaStore } from '@/lib/game/stores';
import type { FabricatorRecipe } from '@/lib/game/data/fabricator-recipes';

const MANA_TYPE_LABELS: Record<string, string> = {
  earth: '⛰️ Earth',
  metal: '🔩 Metal',
  crystal: '💎 Crystal',
  sand: '🏜️ Sand',
};

function RecipeCard({
  recipe,
  materials,
  manaAmount,
  onCraft,
  isCrafting,
}: {
  recipe: FabricatorRecipe;
  materials: Record<string, number>;
  manaAmount: number;
  onCraft: (recipe: FabricatorRecipe) => void;
  isCrafting: boolean;
}) {
  const { canCraft, missingMaterials, missingMana } = canCraftRecipe(
    recipe,
    materials,
    manaAmount,
  );
  const rarityStyle = LOOT_RARITY_COLORS[recipe.rarity];

  return (
    <div
      className="p-3 rounded border bg-gray-800/50"
      style={{ borderColor: rarityStyle?.color }}
    >
      <div className="flex justify-between items-start mb-2">
        <div>
          <div className="font-semibold" style={{ color: rarityStyle?.color }}>
            {recipe.name}
          </div>
          <div className="text-xs text-gray-400 capitalize">{recipe.rarity}</div>
        </div>
        <Badge variant="outline" className="text-xs">
          {MANA_TYPE_LABELS[recipe.manaType] ?? recipe.manaType}
        </Badge>
      </div>

      <div className="text-xs text-gray-400 mb-2">{recipe.description}</div>
      <div className="text-xs text-amber-400/80 italic mb-2">{recipe.gearTrait}</div>

      <Separator className="bg-gray-700 my-2" />

      <div className="text-xs space-y-1">
        <div className="text-gray-500">Materials:</div>
        {Object.entries(recipe.materials).map(([matId, amount]) => {
          const available = materials[matId] || 0;
          const matDrop = LOOT_DROPS[matId];
          const hasEnough = available >= amount;

          return (
            <div key={matId} className="flex justify-between">
              <span>{matDrop?.name ?? matId}</span>
              <span className={hasEnough ? 'text-green-400' : 'text-red-400'}>
                {available} / {amount}
              </span>
            </div>
          );
        })}

        <div className="flex justify-between mt-2">
          <span>{MANA_TYPE_LABELS[recipe.manaType]?.split(' ')[1] ?? recipe.manaType} Mana:</span>
          <span className={manaAmount >= recipe.manaCost ? 'text-green-400' : 'text-red-400'}>
            {manaAmount} / {recipe.manaCost}
          </span>
        </div>

        <div className="flex justify-between">
          <span>Craft Time:</span>
          <span>{recipe.craftTime}h</span>
        </div>
      </div>

      <Button
        className="w-full mt-3"
        size="sm"
        disabled={!canCraft || isCrafting}
        onClick={() => onCraft(recipe)}
      >
        {canCraft ? 'Craft' : 'Missing Resources'}
      </Button>
    </div>
  );
}

export function FabricatorSubTab() {
  const [selectedManaType, setSelectedManaType] = useState<string>('earth');

  const lootInventory = useCraftingStore((s) => s.lootInventory);
  const equipmentCraftingProgress = useCraftingStore((s) => s.equipmentCraftingProgress);
  const rawMana = useManaStore((s) => s.rawMana);
  const startCraftingEquipment = useCraftingStore((s) => s.startCraftingEquipment);
  const cancelEquipmentCrafting = useCraftingStore((s) => s.cancelEquipmentCrafting);

  const availableManaTypes = useMemo(() => {
    return [...new Set(FABRICATOR_RECIPES.map((r) => r.manaType))];
  }, []);

  const filteredRecipes = useMemo(
    () => getRecipesByManaType(selectedManaType),
    [selectedManaType],
  );

  const isCrafting = equipmentCraftingProgress !== null;

  const handleCraft = (recipe: FabricatorRecipe) => {
    // Use the existing equipment crafting system with a fabricator-specific blueprint ID
    startCraftingEquipment(`fabricator-${recipe.id}`);
  };

  return (
    <div className="space-y-4">
      {/* Mana type filter */}
      <div className="flex gap-2 flex-wrap">
        {availableManaTypes.map((mt) => (
          <Button
            key={mt}
            variant={selectedManaType === mt ? 'default' : 'outline'}
            size="sm"
            onClick={() => setSelectedManaType(mt)}
          >
            {MANA_TYPE_LABELS[mt] ?? mt}
          </Button>
        ))}
      </div>

      <div className="grid grid-cols-1 lg:grid-cols-2 gap-4">
        {/* Recipe list */}
        <Card className="bg-gray-900/80 border-gray-700">
          <CardHeader className="pb-2">
            <CardTitle className="text-amber-400 text-sm flex items-center gap-2">
              <Hammer className="w-4 h-4" />
              {MANA_TYPE_LABELS[selectedManaType] ?? selectedManaType} Recipes
            </CardTitle>
          </CardHeader>
          <CardContent>
            {isCrafting ? (
              <div className="space-y-3">
                <div className="text-sm text-gray-400">
                  Crafting: {equipmentCraftingProgress.blueprintId}
                </div>
                <Progress
                  value={
                    (equipmentCraftingProgress.progress /
                      equipmentCraftingProgress.required) *
                    100
                  }
                  className="h-3"
                />
                <div className="flex justify-between text-xs text-gray-400">
                  <span>
                    {equipmentCraftingProgress.progress.toFixed(1)}h /{' '}
                    {equipmentCraftingProgress.required.toFixed(1)}h
                  </span>
                  <span>Mana spent: {equipmentCraftingProgress.manaSpent}</span>
                </div>
                <Button size="sm" variant="outline" onClick={cancelEquipmentCrafting}>
                  Cancel
                </Button>
              </div>
            ) : (
              <ScrollArea className="h-80">
                <div className="space-y-2">
                  {filteredRecipes.length === 0 ? (
                    <div className="text-center text-gray-400 py-4">
                      <Anvil className="w-12 h-12 mx-auto mb-2 opacity-50" />
                      <p>No recipes for this mana type yet.</p>
                    </div>
                  ) : (
                    filteredRecipes.map((recipe) => (
                      <RecipeCard
                        key={recipe.id}
                        recipe={recipe}
                        materials={lootInventory.materials}
                        manaAmount={rawMana}
                        onCraft={handleCraft}
                        isCrafting={isCrafting}
                      />
                    ))
                  )}
                </div>
              </ScrollArea>
            )}
          </CardContent>
        </Card>

        {/* Materials inventory */}
        <Card className="bg-gray-900/80 border-gray-700">
          <CardHeader className="pb-2">
            <CardTitle className="text-amber-400 text-sm flex items-center gap-2">
              <Package className="w-4 h-4" />
              Materials ({Object.values(lootInventory.materials).reduce((a, b) => a + b, 0)})
            </CardTitle>
          </CardHeader>
          <CardContent>
            <ScrollArea className="h-80">
              {Object.keys(lootInventory.materials).length === 0 ? (
                <div className="text-center text-gray-400 py-4">
                  <Package className="w-12 h-12 mx-auto mb-2 opacity-50" />
                  <p>No materials collected yet.</p>
                  <p className="text-xs mt-1">Defeat floors to gather materials!</p>
                </div>
              ) : (
                <div className="grid grid-cols-2 gap-2">
                  {Object.entries(lootInventory.materials).map(([matId, count]) => {
                    if (count <= 0) return null;
                    const drop = LOOT_DROPS[matId];
                    if (!drop) return null;

                    const rarityStyle = LOOT_RARITY_COLORS[drop.rarity];

                    return (
                      <div
                        key={matId}
                        className="p-2 rounded border bg-gray-800/50"
                        style={{ borderColor: rarityStyle?.color }}
                      >
                        <div className="text-sm font-semibold" style={{ color: rarityStyle?.color }}>
                          {drop.name}
                        </div>
                        <div className="text-xs text-gray-400">x{count}</div>
                      </div>
                    );
                  })}
                </div>
              )}
            </ScrollArea>
          </CardContent>
        </Card>
      </div>
    </div>
  );
}

FabricatorSubTab.displayName = 'FabricatorSubTab';