import type { CharacterProfile } from "../app/types";
import type { ArenaActorSnapshot, ArenaAuthoritativeSnapshot } from "./arenaTypes";

export function controlledArenaActor(snapshot: ArenaAuthoritativeSnapshot | null, character: Pick<CharacterProfile, "id"> | null): ArenaActorSnapshot | null {
  if (!snapshot) return null;
  return snapshot.actors.find((actor) => actor.id === snapshot.controlledActorId)
    ?? snapshot.actors.find((actor) => character && actor.characterId === character.id && !actor.isBot)
    ?? (snapshot.mode === "practice" ? snapshot.actors.find((actor) => actor.id === "practice-player") : null)
    ?? null;
}

export function arenaTargetActor(snapshot: ArenaAuthoritativeSnapshot | null, id: string | null): ArenaActorSnapshot | null {
  const player = snapshot?.actors.find((actor) => actor.id === id);
  if (player) return player;
  for (const owner of snapshot?.actors ?? []) {
    const summon = owner.combat?.summons.find((entry) => entry.id === id);
    if (summon) return { ...owner, id: summon.id, name: summon.name, position: summon.position,
      health: summon.health, maxHealth: summon.maxHealth, alive: summon.health > 0 };
  }
  return null;
}

export function arenaIntentFeedback(reason?: string): string {
  return ({
    "preparation": "Wait for the gates to open.", "invalid-target": "Select a living target.",
    "out-of-range": "Target is out of range.", "line-of-sight": "Target is out of sight.",
    "resource": "Not enough resource.", "cooldown": "Ability is not ready yet.",
    "already-casting": "Already casting.", "moving": "Stop moving to cast.",
    "controlled": "You cannot cast while controlled or silenced.", "not-learned": "That ability is not learned by this character.",
    "not-facing": "Face your target.", "must-be-behind": "Move behind your target.",
    "invalid-destination": "Choose a reachable location in range.", "insufficient-resource": "Not enough resource.",
    "school-locked": "That spell school is locked.", "player-controlled": "You cannot act while controlled.",
    "actor-unavailable": "You cannot act right now.",
  } as Record<string, string>)[reason ?? ""] ?? "Unable to use that ability.";
}