// ─── Initial State Factory ────────────────────────────────────────────────────
// Extracted from store.ts (lines 690-904)

import type { GameState, AttunementState, EnemyState } from '../types';
import { ELEMENTS, GUARDIANS, BASE_UNLOCKED_ELEMENTS, SPELLS_DEF, BASE_UNLOCKED_EFFECTS, PUZZLE_ROOMS } from '../constants';
import { computeElementMax } from './computed-stats';
import { computeEffects as computeUpgradeEffects } from '../upgrade-effects';
import { createStartingEquipment, getSpellsFromEquipment } from '../crafting-slice';
import { getFloorMaxHP, getFloorElement } from '../utils/floor-utils';
import { generateFloorState } from './room-utils';

export function makeInitial(overrides: Partial<GameState> = {}): GameState {
  const pu = overrides.prestigeUpgrades || {};
  const startFloor = 1 + (pu.spireKey || 0) * 2;
  const effects = overrides.skillUpgrades ? computeUpgradeEffects(overrides.skillUpgrades || {}, overrides.skillTiers || {}) : undefined;
  const manaHeartBonus = overrides.manaHeartBonus || 0;
  const unlockedManaTypeUpgrades = overrides.unlockedManaTypeUpgrades || [];

  const elements: Record<string, { current: number; max: number; unlocked: boolean }> = {};
  Object.keys(ELEMENTS).forEach((k) => {
    const isUnlocked = BASE_UNLOCKED_ELEMENTS.includes(k);
    let startAmount = 0;
    
    // Start with some elemental mana if elemStart upgrade
    if (isUnlocked && pu.elemStart) {
      startAmount = pu.elemStart * 5;
    }
    
    // Calculate per-element max capacity including unlockedManaTypeCapacity upgrades
    const baseElemMax = computeElementMax({ 
      skills: overrides.skills || {}, 
      prestigeUpgrades: pu, 
      skillUpgrades: overrides.skillUpgrades || {}, 
      skillTiers: overrides.skillTiers || {},
      unlockedManaTypeUpgrades 
    }, effects, k);
    
    elements[k] = {
      current: overrides.elements?.[k]?.current ?? startAmount,
      max: baseElemMax,
      unlocked: isUnlocked,
    };
  });

  // Starting raw mana
  const startRawMana = 10 + (pu.manaWell || 0) * 500 + (pu.quickStart || 0) * 100;
  
  // Create starting equipment (staff with mana bolt, clothes)
  const startingEquipment = createStartingEquipment();
  
  // Get spells from starting equipment
  const equipmentSpells = getSpellsFromEquipment(
    startingEquipment.equipmentInstances,
    Object.values(startingEquipment.equippedInstances)
  );
  
  // Starting spells - now come from equipment instead of being learned directly
  const startSpells: Record<string, { learned: boolean; level: number; studyProgress: number }> = {};
  
  // Add spells from equipment
  for (const spellId of equipmentSpells) {
    startSpells[spellId] = { learned: true, level: 1, studyProgress: 0 };
  }
  
  // Add random starting spells from spell memory upgrade (pact spells)
  if (pu.spellMemory) {
    const availableSpells = Object.keys(SPELLS_DEF).filter(s => !startSpells[s]);
    const shuffled = availableSpells.sort(() => Math.random() - 0.5);
    for (let i = 0; i < Math.min(pu.spellMemory, shuffled.length); i++) {
      startSpells[shuffled[i]] = { learned: true, level: 1, studyProgress: 0 };
    }
  }

  // Starting attunements - player begins with Enchanter
  const startingAttunements: Record<string, AttunementState> = {
    enchanter: { id: 'enchanter', active: true, level: 1, experience: 0 },
  };

  // Add any attunements from previous loops (for persistence)
  if (overrides.attunements) {
    Object.entries(overrides.attunements).forEach(([id, state]) => {
      if (id !== 'enchanter') {
        startingAttunements[id] = state;
      }
    });
  }

  // Unlock transference element for Enchanter attunement
  if (elements['transference']) {
    elements['transference'] = { ...elements['transference'], unlocked: true };
  }

  return {
    day: 1,
    hour: 0,
    loopCount: overrides.loopCount || 0,
    gameOver: false,
    victory: false,
    paused: false,

    rawMana: startRawMana,
    meditateTicks: 0,
    totalManaGathered: overrides.totalManaGathered || 0,

    // Attunements (class-like system)
    attunements: startingAttunements,

    elements: elements as Record<string, { current: number; max: number; unlocked: boolean }>,

    currentFloor: startFloor,
    floorHP: getFloorMaxHP(startFloor),
    floorMaxHP: getFloorMaxHP(startFloor),
    maxFloorReached: startFloor,
    signedPacts: [],
    activeSpell: 'manaBolt',
    currentAction: 'meditate',
    castProgress: 0,
    
    // Initialize room state
    currentRoom: generateFloorState(startFloor),

    spells: startSpells,
    skills: overrides.skills || {},
    skillProgress: {},
    skillUpgrades: overrides.skillUpgrades || {},
    skillTiers: overrides.skillTiers || {},
    parallelStudyTarget: null,

    // Golemancy
    golemancy: {
      enabledGolems: [],
      summonedGolems: [],
      lastSummonFloor: 0,
    },

    // Achievements
    achievements: {
      unlocked: [],
      progress: {},
    },

    // Stats tracking
    totalSpellsCast: 0,
    totalDamageDealt: 0,
    totalCraftsCompleted: 0,

    // Combat special effect tracking
    comboHitCount: 0,         // Hit counter for COMBO_MASTER (every 5th attack)
    floorHitCount: 0,         // Hit counter for current floor (for FIRST_STRIKE)

    // New equipment system
    equippedInstances: startingEquipment.equippedInstances,
    equipmentInstances: startingEquipment.equipmentInstances,
    enchantmentDesigns: [],
    designProgress: null,
    designProgress2: null,
    preparationProgress: null,
    applicationProgress: null,
    equipmentCraftingProgress: null,
    unlockedEffects: [...BASE_UNLOCKED_EFFECTS],
    equipmentSpellStates: [],

    // Legacy equipment (for backward compatibility)
    equipment: {
      mainHand: null,
      offHand: null,
      head: null,
      body: null,
      hands: null,
      accessory: null,
    },
    inventory: [],

    blueprints: {},

    // Loot inventory
    lootInventory: {
      materials: {},
      blueprints: [],
    },

    schedule: [],
    autoSchedule: false,
    studyQueue: [],
    craftQueue: [],

    currentStudyTarget: null,
    
    // Study momentum tracking (for STUDY_MOMENTUM effect)
    consecutiveStudyHours: 0,

    insight: overrides.insight || 0,
    totalInsight: overrides.totalInsight || 0,
    prestigeUpgrades: pu,
    memorySlots: 3 + (pu.deepMemory || 0),
    memories: overrides.memories || [],

    incursionStrength: 0,
    containmentWards: 0,

    // Conversion drains tracking (for UI display)
    conversionDrains: {},

    log: ['✨ The loop begins. You start with a Basic Staff (Mana Bolt) and civilian clothes. Gather your strength, mage.'],
    loopInsight: 0,
    flowSurgeEndTime: 0,  // Hour timestamp for FLOW_SURGE effect (0 = inactive)
    
    // Mana Well Effects (Phase 4)
    manaHeartBonus: manaHeartBonus,  // Cumulative +10% max mana per loop from MANA_HEART
    
    // Spire Mode - simplified UI for climbing
    spireMode: false,
    clearedFloors: {},
    climbDirection: null,
    isDescending: false,
    
    // Activity Log (for Spire Mode UI)
    activityLog: [],
    
    // Track selected mana types for unlockedManaTypeCapacity upgrade
    unlockedManaTypeUpgrades: unlockedManaTypeUpgrades,
  };
}