import { useMemo, useState } from 'react';

import type {
  RuntimeStoryEquipmentSlotView,
  RuntimeStoryForgeRecipeView,
  RuntimeStoryInventoryItemView,
} from '../../packages/shared/src/contracts/rpgRuntimeStoryState';
import { formatCurrency } from '../data/economy';
import { buildInitialPlayerInventory } from '../data/npcInteractions';
import {
  Character,
  InventoryItem,
  NarrativeCodexSection,
  NarrativeQaReport,
  WorldType,
} from '../types';
import { PlatformPillBadge } from './common/PlatformPillBadge';
import { PlatformActionButton } from './common/PlatformActionButton';
import { PlatformStatusMessage } from './common/PlatformStatusMessage';
import { PlatformSubpanel } from './common/PlatformSubpanel';
import {
  InventoryItemDetailModal,
  InventoryItemGrid,
} from './InventoryItemViews';

interface InventoryPanelProps {
  playerCharacter: Character;
  worldType: WorldType | null;
  playerInventory: InventoryItem[];
  playerCurrency: number;
  playerHp: number;
  playerMaxHp: number;
  playerMana: number;
  playerMaxMana: number;
  inBattle: boolean;
  currencyText?: string | null;
  backpackItems?: RuntimeStoryInventoryItemView[];
  equipmentSlots?: RuntimeStoryEquipmentSlotView[];
  onUseItem: (itemId: string) => Promise<boolean>;
  onEquipItem: (itemId: string) => Promise<boolean>;
  forgeRecipes: RuntimeStoryForgeRecipeView[];
  onCraftRecipe: (recipeId: string) => Promise<boolean>;
  onDismantleItem: (itemId: string) => Promise<boolean>;
  onReforgeItem: (itemId: string) => Promise<boolean>;
  narrativeCodex?: NarrativeCodexSection[];
  narrativeQaReport?: NarrativeQaReport | null;
}

export function InventoryPanel({
  playerCharacter,
  worldType,
  playerInventory,
  playerCurrency,
  inBattle,
  currencyText = null,
  backpackItems = [],
  equipmentSlots: _equipmentSlots = [],
  onUseItem: _onUseItem,
  onEquipItem: _onEquipItem,
  forgeRecipes,
  onCraftRecipe,
  onDismantleItem: _onDismantleItem,
  onReforgeItem: _onReforgeItem,
  narrativeCodex = [],
  narrativeQaReport = null,
}: InventoryPanelProps) {
  const [selectedItem, setSelectedItem] = useState<InventoryItem | null>(null);
  const [forgeActionKey, setForgeActionKey] = useState<string | null>(null);

  const serverInventoryItems = useMemo(
    () =>
      backpackItems
        .map((view) => view.item as unknown as InventoryItem)
        .filter(
          (item) =>
            typeof item.id === 'string' && typeof item.name === 'string',
        ),
    [backpackItems],
  );
  const inventoryItems = useMemo(
    () =>
      serverInventoryItems.length > 0
        ? serverInventoryItems
        : playerInventory.length > 0
          ? playerInventory
          : buildInitialPlayerInventory(playerCharacter, worldType),
    [playerCharacter, playerInventory, serverInventoryItems, worldType],
  );
  const documentItems = useMemo(
    () =>
      inventoryItems.filter(
        (item) => item.category === '文书' || item.tags.includes('document'),
      ),
    [inventoryItems],
  );

  return (
    <div className="flex min-h-0 flex-1 flex-col">
      <div className="flex-1 overflow-y-auto scrollbar-hide">
        <InventoryItemGrid
          items={inventoryItems}
          selectedItemId={selectedItem?.id ?? null}
          onSelectItem={setSelectedItem}
        />

        {documentItems.length > 0 && (
          <PlatformSubpanel
            surface="dark"
            radius="sm"
            padding="md"
            className="mt-4"
          >
            <div className="mb-2 text-xs uppercase tracking-[0.2em] text-zinc-500">
              文书与证据
            </div>
            <div className="space-y-2">
              {documentItems.map((item) => (
                <PlatformSubpanel
                  as="button"
                  key={item.id}
                  onClick={() => setSelectedItem(item)}
                  surface="dark"
                  radius="xs"
                  padding="row"
                  className="w-full text-left transition hover:border-white/15"
                >
                  <div className="text-sm font-semibold text-white">
                    {item.name}
                  </div>
                  <div className="mt-1 text-xs text-zinc-400">
                    {item.description || '记录着当前线程的阶段性线索。'}
                  </div>
                </PlatformSubpanel>
              ))}
            </div>
          </PlatformSubpanel>
        )}

        {(narrativeCodex.length > 0 || narrativeQaReport) && (
          <PlatformSubpanel
            surface="dark"
            radius="sm"
            padding="md"
            className="mt-4"
          >
            <div className="mb-2 text-xs uppercase tracking-[0.2em] text-zinc-500">
              故事档案
            </div>
            {narrativeQaReport && (
              <PlatformStatusMessage
                tone="warning"
                surface="editorDark"
                size="xs"
                className="mb-3"
              >
                QA：{narrativeQaReport.summary}
              </PlatformStatusMessage>
            )}
            <div className="space-y-3">
              {narrativeCodex.slice(0, 3).map((section) => (
                <PlatformSubpanel
                  key={section.id}
                  surface="dark"
                  radius="xs"
                  padding="sm"
                >
                  <div className="text-sm font-semibold text-white">
                    {section.title}
                  </div>
                  <div className="mt-2 space-y-1">
                    {section.entries.slice(0, 3).map((entry) => (
                      <div key={entry.id} className="text-xs text-zinc-400">
                        <span className="text-zinc-200">{entry.title}</span>
                        {'：'}
                        {entry.summary}
                      </div>
                    ))}
                  </div>
                </PlatformSubpanel>
              ))}
            </div>
          </PlatformSubpanel>
        )}

        <PlatformSubpanel
          surface="dark"
          radius="sm"
          padding="md"
          className="mt-4"
        >
          <div className="mb-2 flex items-center justify-between gap-3 text-xs uppercase tracking-[0.2em] text-zinc-500">
            <span>工坊</span>
            <span className="text-emerald-200/80">
              {currencyText ?? formatCurrency(playerCurrency, worldType)}
            </span>
          </div>
          <div className="space-y-3">
            {forgeRecipes.map((recipe) => (
              <PlatformSubpanel
                key={recipe.id}
                surface="dark"
                radius="xs"
                padding="sm"
              >
                <div className="flex items-start justify-between gap-3">
                  <div className="min-w-0">
                    <div className="text-sm font-semibold text-white">
                      {recipe.name}
                    </div>
                    <div className="mt-1 text-xs text-zinc-400">
                      {recipe.description}
                    </div>
                    <div className="mt-2 text-xs text-emerald-200/80">
                      产物：{recipe.resultLabel}
                    </div>
                    <div className="mt-1 text-[11px] text-zinc-500">
                      花费：{recipe.currencyText}
                    </div>
                  </div>
                  <PlatformActionButton
                    surface="editorDark"
                    tone="success"
                    size="xxs"
                    disabled={
                      !recipe.canCraft ||
                      !recipe.action.enabled ||
                      inBattle ||
                      forgeActionKey === recipe.id
                    }
                    onClick={async () => {
                      setForgeActionKey(recipe.id);
                      const crafted = await onCraftRecipe(recipe.id);
                      setForgeActionKey(null);
                      if (crafted && selectedItem) {
                        setSelectedItem(null);
                      }
                    }}
                    className="rounded-lg disabled:border-white/8 disabled:bg-black/20 disabled:text-zinc-500 disabled:opacity-100"
                  >
                    {forgeActionKey === recipe.id
                      ? '制作中...'
                      : recipe.kind === 'forge'
                        ? '锻造'
                        : '合成'}
                  </PlatformActionButton>
                </div>
                <div className="mt-2 flex flex-wrap gap-2">
                  {recipe.requirements.map((requirement) => {
                    const isRequirementMet =
                      requirement.owned >= requirement.quantity;

                    return (
                      <PlatformPillBadge
                        key={`${recipe.id}-${requirement.id}`}
                        tone={isRequirementMet ? 'darkEmerald' : 'darkNeutral'}
                        size="xxs"
                        className={`px-2 ${isRequirementMet ? '' : 'text-zinc-400'}`}
                      >
                        {requirement.label} {requirement.owned}/
                        {requirement.quantity}
                      </PlatformPillBadge>
                    );
                  })}
                </div>
                {(!recipe.canCraft || !recipe.action.enabled) &&
                  (recipe.disabledReason || recipe.action.reason) && (
                    <div className="mt-2 text-[11px] text-zinc-500">
                      {recipe.disabledReason ?? recipe.action.reason}
                    </div>
                  )}
              </PlatformSubpanel>
            ))}
          </div>
        </PlatformSubpanel>
      </div>

      <InventoryItemDetailModal
        item={selectedItem}
        playerCharacter={playerCharacter}
        worldType={worldType}
        onClose={() => setSelectedItem(null)}
      />
    </div>
  );
}