import { useCombatStore } from "./combatStore";
import { LOOT_CATALOG, rollBossLoot } from "./lootCatalog";
import { useManastormStore } from "./manastormStore";
import { useGameStore } from "./store";
import { getManastormCatalog, manastormScaling } from "./manastorm";
import { requestOnlineInteraction } from "./onlineSessionRuntime";

/** Shared keyboard, controller, touch, and HUD interaction for the active corpse. */
export function lootCurrentManastormBoss(now = Date.now()): boolean {
  const game = useGameStore.getState();
  const manastorm = useManastormStore.getState();
  if (game.gameMode !== "manastorm" || manastorm.status !== "awaiting-loot") return false;
  const bossId = manastorm.currentEncounter?.bossRuntimeId;
  if (!bossId) return false;
  if (requestOnlineInteraction("loot", bossId)) return true;
  return useCombatStore.getState().lootMob(bossId, now);
}

function stableCacheHash(value: string): number {
  let hash = 2_166_136_261;
  for (let index = 0; index < value.length; index += 1) {
    hash ^= value.charCodeAt(index);
    hash = Math.imul(hash, 16_777_619);
  }
  return hash >>> 0;
}

/**
 * Opens a persisted cache and grants concrete character-level loot. Ascension's
 * private cache tables are unavailable, so templates come from the checked-in
 * SQL loot catalog while the Manastorm cache supplies level and bonus chance.
 */
export function openManastormRewardCache(
  cacheId: string,
  now = Date.now(),
  random: () => number = Math.random,
): boolean {
  const manastorm = useManastormStore.getState();
  const cache = manastorm.rewardCache.find((candidate) => candidate.id === cacheId);
  if (!cache || !LOOT_CATALOG.bosses.length) return false;
  const tableIndex = stableCacheHash(`${cache.cacheId}:${cache.level}`) % LOOT_CATALOG.bosses.length;
  const table = LOOT_CATALOG.bosses[tableIndex];
  const combat = useCombatStore.getState();
  const bonusItemChance = Math.max(
    0,
    Math.min(
      0.75,
      manastormScaling(
        cache.level,
        getManastormCatalog(),
        manastorm.modeId,
      ).bonusLootChance
        + (cache.cacheId === "manastorm-bonus-cache" ? 0.35 : 0),
    ),
  );
  const items = rollBossLoot(table.bossKey, combat.level, {
    now,
    random,
    bonusItemChance,
  });
  if (!useManastormStore.getState().openRewardCache(cacheId)) return false;
  if (items.length) {
    useCombatStore.setState((state) => ({
      inventory: [...state.inventory, ...items],
    }));
  }
  return true;
}