import { introductionStorm, introductionSpiceBlow, OPENING_DEFAULTS, type IntroductionOpeningChoice } from './introduction-opening';
import { baseDeck, leaders } from './cards';
import { reserveShipmentCost } from './shipment-price';
import { quoteBattleResolution, type ResolutionCombatant } from './battle-resolution-quote';
import { quoteSpiceCollection } from './board-resolution-quote';
import { INTRODUCTION_MOVE_DESTINATIONS, introductionMovement, type IntroductionMovementChoice } from './introduction-movement';
import { introductionBidding, type IntroductionBiddingChoice } from './introduction-bidding';
import { introductionAlliance, INTRODUCTION_ALLIANCE_DEFAULTS, type IntroductionAllianceChoice } from './introduction-alliance';
import { introductionCharity, introductionRevival, RESOURCE_DEFAULTS, type IntroductionResourceChoice } from './introduction-resources';

/** Fixed teaching examples, never a room, seat or multiplayer save. */
export const INTRODUCTION_STORAGE_KEY = 'dune-introduction-v1';
export const INTRODUCTION_STEPS = [
  { title: 'Your place at the table', topic: 'setup' },
  { title: 'Dial and move the storm', topic: 'storm' },
  { title: 'Reveal spice and Shai-Hulud', topic: 'spice-blow' },
  { title: 'Choose an ally at the Nexus', topic: 'spice-blow' },
  { title: 'Claim CHOAM Charity', topic: 'charity' },
  { title: 'Bid for a hidden card', topic: 'bidding' },
  { title: 'Revive forces and leaders', topic: 'revival' },
  { title: 'Ship within your budget', topic: 'movement' },
  { title: 'Move across the board', topic: 'movement' },
  { title: 'Seal a battle plan', topic: 'battle' },
  { title: 'Reveal a Traitor', topic: 'battle' },
  { title: 'Collect the spice', topic: 'collection' },
  { title: 'Join a table', topic: 'privacy' },
] as const;
export type IntroductionState = IntroductionMovementChoice & IntroductionBiddingChoice & IntroductionAllianceChoice & IntroductionResourceChoice & IntroductionOpeningChoice & {
  version: 6;
  step: number;
  shipment: number;
  destination: 'stronghold' | 'sand';
  shipped: boolean;
  dial: number;
  defense: 'shield' | 'snooper';
  revealed: boolean;
  collectors: number;
  city: boolean;
  collected: boolean;
  moved: boolean;
  traitorStage: 'plans' | 'revealed' | 'resolved';
  traitorCall: boolean;
  opponentTraitor: boolean;
};
export function newIntroduction(): IntroductionState {
  return { ...OPENING_DEFAULTS, ...RESOURCE_DEFAULTS, revivalActions: [], ...INTRODUCTION_ALLIANCE_DEFAULTS, allianceActions: [], version: 6, step: 0, shipment: 4, destination: 'sand', shipped: false,
    dial: 2, defense: 'shield', revealed: false, collectors: 3, city: false, collected: false,
    moveDestination: 'pasty_mesa:5', moveForces: 3, moveCity: false, moveStorm: false,
    moved: false, traitorStage: 'plans', traitorCall: false, opponentTraitor: false,
    auctionScenario: 'contest', auctionHandFull: false, auctionBid: 1, auctionActions: [] };
}
const integer = (value: unknown, min: number, max: number): value is number =>
  Number.isSafeInteger(value) && (value as number) >= min && (value as number) <= max;
export function restoreIntroduction(raw: string | null): IntroductionState | null {
  if (!raw) return null;
  try {
    const parsed = JSON.parse(raw);
    if (!parsed || ![1, 2, 3, 4, 5, 6].includes(parsed.version)) return null;
    // Keep the existing browser key and translate old positions, not just indices.
    if (parsed.version === 1 && !integer(parsed.step, 0, 4)) return null;
    if (parsed.version === 2 && !integer(parsed.step, 0, 6)) return null;
    if (parsed.version === 3 && !integer(parsed.step, 0, 7)) return null;
    if (parsed.version === 4 && !integer(parsed.step, 0, 8)) return null;
    if (parsed.version === 5 && !integer(parsed.step, 0, 10)) return null;
    const resourceDefaults = { ...RESOURCE_DEFAULTS, revivalActions: [] };
    const auctionDefaults = { auctionScenario: 'contest', auctionHandFull: false, auctionBid: 1, auctionActions: [] };
    const allianceDefaults = { ...INTRODUCTION_ALLIANCE_DEFAULTS, allianceActions: [] };
    const previous = (parsed.version === 1 ? { ...newIntroduction(), ...parsed, version: 5,
      step: [0, 5, 7, 9, 10][parsed.step],
      moveDestination: 'pasty_mesa:5', moveForces: 3, moveCity: false, moveStorm: false,
      moved: false, traitorStage: 'plans', traitorCall: false, opponentTraitor: false, ...auctionDefaults, ...allianceDefaults, ...resourceDefaults }
      : parsed.version === 2 ? { ...parsed, version: 5, step: [0, 5, 6, 7, 8, 9, 10][parsed.step], ...auctionDefaults, ...allianceDefaults, ...resourceDefaults }
      : parsed.version === 3 ? { ...parsed, version: 5, step: [0, 3, 5, 6, 7, 8, 9, 10][parsed.step], ...allianceDefaults, ...resourceDefaults }
      : parsed.version === 4 ? { ...parsed, version: 5, step: [0, 1, 3, 5, 6, 7, 8, 9, 10][parsed.step], ...resourceDefaults }
      : parsed);
    const s = (previous.version === 5 ? { ...previous, version: 6, step: [0, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12][previous.step], ...OPENING_DEFAULTS } : previous) as IntroductionState;
    if (!integer(s.step, 0, INTRODUCTION_STEPS.length - 1) ||
      !integer(s.shipment, 1, 6) || !['stronghold', 'sand'].includes(s.destination) ||
      !integer(s.dial, 0, 6) || !['shield', 'snooper'].includes(s.defense) ||
      !integer(s.collectors, 0, 6) ||
      ![s.shipped, s.revealed, s.city, s.collected].every(v => typeof v === 'boolean') ||
      (s.shipped && introductionShipment(s).cost > 8) ||
      !INTRODUCTION_MOVE_DESTINATIONS.includes(s.moveDestination) || !integer(s.moveForces, 1, 5) ||
      ![s.moveCity, s.moveStorm, s.moved, s.traitorCall, s.opponentTraitor].every(v => typeof v === 'boolean') ||
      !['plans', 'revealed', 'resolved'].includes(s.traitorStage) ||
      (s.traitorStage !== 'resolved' && s.traitorCall) ||
      (s.moved && !introductionMovement(s).allowed)) return null;
    introductionBidding(s);
    introductionAlliance(s);
    introductionCharity(s);
    introductionRevival(s);
    introductionStorm(s);
    introductionSpiceBlow(s);
    // Whitelist fields; never retain credentials or arbitrary imported properties.
    return { version: 6, stormExample: s.stormExample, stormDial: s.stormDial, stormStage: s.stormStage, blowExample: s.blowExample, blowStage: s.blowStage, step: s.step, shipment: s.shipment, destination: s.destination,
      shipped: s.shipped, dial: s.dial, defense: s.defense, revealed: s.revealed,
      collectors: s.collectors, city: s.city, collected: s.collected,
      moveDestination: s.moveDestination, moveForces: s.moveForces, moveCity: s.moveCity,
      moveStorm: s.moveStorm, moved: s.moved, traitorStage: s.traitorStage,
      traitorCall: s.traitorCall, opponentTraitor: s.opponentTraitor,
      auctionScenario: s.auctionScenario, auctionHandFull: s.auctionHandFull,
      auctionBid: s.auctionBid, auctionActions: [...s.auctionActions],
      allianceScenario: s.allianceScenario, allianceHoldings: s.allianceHoldings,
      allianceActions: [...s.allianceActions], allianceClosed: s.allianceClosed, allianceChecked: s.allianceChecked,
      charitySpice: s.charitySpice, charityClaimed: s.charityClaimed,
      revivalFaction: s.revivalFaction, revivalSpice: s.revivalSpice, revivalAmount: s.revivalAmount,
      revivalLeader: s.revivalLeader, revivalRoster: s.revivalRoster,
      revivalActions: s.revivalActions.map(a => a.kind === 'forces' ? { kind: a.kind, amount: a.amount } : { kind: a.kind, leader: a.leader }) };
  } catch { return null; }
}
export function introductionShipment(s: Pick<IntroductionState, 'shipment' | 'destination'>) {
  const cost = reserveShipmentCost({ faction: 'atreides', halfRate: false }, s.destination, s.shipment);
  return { cost, remaining: 8 - cost, affordable: cost <= 8 };
}
export const INTRODUCTION_CARDS = {
  shield: baseDeck().find(c => c.kind === 'shield')!,
  snooper: baseDeck().find(c => c.kind === 'snooper')!,
  weapon: baseDeck().find(c => c.kind === 'projectile')!,
};
export const INTRODUCTION_LEADERS = { you: leaders('atreides')[0], opponent: leaders('guild')[0] };
export function introductionBattle(s: Pick<IntroductionState, 'dial' | 'defense'>) {
  return practiceBattle(s, false, false);
}
export function introductionTraitor(s: Pick<IntroductionState, 'traitorCall' | 'opponentTraitor'>) {
  return practiceBattle({ dial: 2, defense: 'snooper' }, s.traitorCall, s.opponentTraitor);
}
function practiceBattle(s: Pick<IntroductionState, 'dial' | 'defense'>, call: boolean, opponentCall: boolean) {
  const side = (you: boolean): ResolutionCombatant => {
    const leader = you ? INTRODUCTION_LEADERS.you : INTRODUCTION_LEADERS.opponent;
    const card = you ? INTRODUCTION_CARDS[s.defense] : INTRODUCTION_CARDS.weapon;
    return { id: you ? 'you' : 'opponent', faction: you ? 'atreides' : 'guild', spice: 0,
      hand: [card], leader, plan: { dial: you ? s.dial : 3, support: 0, leader: leader.id,
        weapon: you ? null : card.id, defense: you ? card.id : null },
      forces: { normal: 6, elite: 0, eliteStrength: 1, freeSupport: true } };
  };
  return quoteBattleResolution({ advanced: false, turn: 2, territory: 'wind_pass',
    attacker: side(true), defender: side(false),
    voters: [
      { id: 'you', beneficiary: 'you', called: call, traitors: [INTRODUCTION_LEADERS.opponent.id] },
      { id: 'opponent', beneficiary: 'opponent', called: opponentCall,
        traitors: opponentCall ? [INTRODUCTION_LEADERS.you.id] : [] },
    ],
    participants: [{ id: 'you', faction: 'atreides' }, { id: 'opponent', faction: 'guild' }],
    physicalCards: baseDeck(), pendingAuditorPresent: false, pendingRetentionPresent: false });
}
export function introductionCollection(s: Pick<IntroductionState, 'collectors' | 'city'>) {
  const forces: Record<string, number> = { 'wind_pass:14': s.collectors };
  if (s.city) forces['arrakeen:10'] = 1;
  const quote = quoteSpiceCollection({ advanced: false, storm: 18, order: ['you'],
    players: [{ id: 'you', faction: 'atreides', ally: null, forces, spice: 0 }],
    spice: { 'wind_pass:14': 8 } });
  return { amount: quote.receipts[0].collected, remaining: quote.spice['wind_pass:14'] };
}