import { selectedPhaseModuleRoster, type FactionModuleProfile } from './faction-module-profile';

/** Public uncertainty about a possible concealed Duke capture. Fresh games
 * explicitly begin false; some early legacy states can prove safety publicly. */
export type DukeCapturePolicyContext = Omit<Partial<FactionModuleProfile>, 'players'> & {
  advanced: boolean;
  players: readonly { faction: string }[];
  dukeCaptureUncertain?: boolean;
  status?: string;
  turn?: number;
  phase?: number;
  battle?: unknown;
  lastBattleContext?: unknown;
  pendingCapture?: unknown;
  response?: { kind: string } | null;
  decision?: { kind: string } | null;
};

export const DUKE_CAPTURE_UNCERTAIN_BLOCK =
  'Duke Vidal acquisition is unavailable while Harkonnen capture history may be unresolved.';

/** Before the first battle of the first turn, a legacy game has no capture
 * history. Use public phase and continuation state only, never Duke custody. */
export function legacyDukeCaptureHistoryClear(g: DukeCapturePolicyContext): boolean {
  return g.dukeCaptureUncertain === undefined && g.status === 'playing' && g.turn === 1 &&
    typeof g.phase === 'number' && Number.isInteger(g.phase) && g.phase >= 0 && g.phase <= 5 &&
    g.battle == null && g.lastBattleContext == null && g.pendingCapture == null &&
    g.response?.kind !== 'capture' && g.decision?.kind !== 'captureOffer' &&
    g.decision?.kind !== 'capturedLeader';
}

/** This result depends only on public table configuration and the public
 * uncertainty receipt, never on actual Duke custody or capture identity. */
export function dukeCaptureUncertaintyBlock(g: DukeCapturePolicyContext): string | null {
  return g.advanced && g.players.some(player => player.faction === 'harkonnen') &&
    g.dukeCaptureUncertain !== false && !legacyDukeCaptureHistoryClear(g)
    ? DUKE_CAPTURE_UNCERTAIN_BLOCK : null;
}

/** Original native faction tables with no selected optional module.  Native
 * Ecaz Occupy and Moritani assassination stamps are faction rules, not modules. */
export function plainAdvancedEcazDukeProfile(g: DukeCapturePolicyContext): boolean {
  return g.advanced === true && Array.isArray(g.expansions) && g.expansions.includes('ecaz') &&
    selectedPhaseModuleRoster({ expansions: g.expansions, players: g.players }) &&
    g.players.some(player => player.faction === 'ecaz') &&
    g.players.some(player => player.faction === 'harkonnen') &&
    !g.leaderSkills && !g.homeworlds && !g.nexusCards && !g.techTokens && !g.strongholdCards &&
    !g.discoveryEnabled && !g.discoveries && !g.discoveryStash && !g.greatMaker &&
    !g.ecazTreachery && !g.semutaPreview && !g.advancedPreview && !g.kullPreview &&
    !g.nexusKullPreview && !g.guildBetrayalPreview && !g.richeseBetrayalPreview &&
    !g.nexusIxianReplacementPreview && !g.nexusIxianBetrayalPreview && !g.nexusHarkonnenBetrayalPreview &&
    !g.spiceBankerIncomePreview;
}