import { STARTING_CASH, TURN_SECONDS, FARM_SHUTDOWN_GRACE_SECONDS, BUILD_COSTS, FACILITY_DEFS, GRID, EGG_SPAWN_RANGES } from './config.js';
import { BALANCE } from './balance.js';
import { createRunSeed, generateBlockedCells } from './mapGen.js';
import { resetOwnedCells } from './gridExpansion.js';
import { randomBetween, key, inGrid, directionNameBetweenCells } from './utils.js';

export function newTurnStats() {
  return {
    mixerCount: 0,
    truckFemale: 0,
    truckMale: 0,
    trashCount: 0,
    poopSpawned: 0,
    poopTruck: 0,
    poopTrash: 0,
    poopMixer: 0,
    autoSorted: 0,
    revenue: 0,
    penalty: 0,
    profit: 0,
    pendingTruckRevenue: 0,
    mixerRevenue: 0,
    truckRevenue: 0,
    chickShipmentIncome: 0,
    poopShipmentIncome: 0,
    manualComboBonus: 0,
    manualComboSuccess: 0,
    manualComboFailure: 0,
    repairWorkerWages: 0,
    zundaTax: 0,
    fairiesTribute: 0,
    loanRepayment: 0,
    chemicalWeaponSubsidy: 0,
    rescueLoan: 0,
    cardRerollCost: 0,
    mixerPoopFine: 0,
    truckPoopFine: 0,
    maleTruckFine: 0,
    explosionDamage: 0,
    shredderBonus: 0,
    correct: 0,
    mistakes: 0,
    contractBonus: 0,
    contractResult: null,
    conveyorPasses: 0,
    eggProduced: 0
  };
}

export function newTotalStats() {
  return {
    turnsCompleted: 0,
    processed: 0,
    correct: 0,
    mistakes: 0,
    revenue: 0,
    penalty: 0,
    profit: 0,
    maxCash: STARTING_CASH,
    autoSorted: 0,
    poopTruck: 0,
    poopTrash: 0,
    poopMixer: 0,
    explosionDamage: 0,
    shredderBonus: 0,
    contractBonus: 0,
    zundaTax: 0,
    fairiesTribute: 0,
    loanRepayment: 0,
    chemicalWeaponSubsidy: 0,
    rescueLoan: 0,
    manualComboBonus: 0,
    manualComboSuccess: 0,
    manualComboFailure: 0,
    repairWorkerWages: 0,
    cardRerollCost: 0,
    mixerPoopFine: 0,
    truckPoopFine: 0,
    maleTruckFine: 0,
    contractSuccess: 0,
    contractFailed: 0,
    conveyorPasses: 0,
    eggProduced: 0
  };
}

export function createGame() {
  return {
    phase: 'title',
    cash: STARTING_CASH,
    turn: 1,
    timeLeft: TURN_SECONDS,
    shutdownTimeLeft: 0,
    shutdownGraceSeconds: FARM_SHUTDOWN_GRACE_SECONDS,
    cleanupTimer: null,
    cleanupBlown: false,
    lastTimestamp: 0,
    nextId: 10,
    runSeed: createRunSeed(),
    gridCols: BALANCE.grid.cols,
    gridRows: BALANCE.grid.rows,
    gridExpansionPurchases: 0,
    gridExpansionPurchasesByDirection: { right: 0, up: 0 },
    gridChunkOriginY: 0,
    ownedCells: new Set(),
    blockedCells: new Set(),
    buildTool: null,
    buildSession: 0,
    undoStack: [],
    redoStack: [],
    selected: null,
    multiSelected: [],
    selectionBox: null,
    groupDrag: null,
    pan: null,
    view: { x: 0, y: 0, scale: 1 },
    hover: null,
    chicks: [],
    effects: [],
    floatingTexts: [],
    shake: { time: 0, strength: 0 },
    truckCargo: [],
    conveyorTiles: new Set(),
    conveyorMeta: new Map(),
    eggFarms: [],
    scanners: [],
    facilities: {},
    branchCounters: new Map(),
    routingVersion: 0,
    factoryGraph: null,
    factoryGraphCommittedVersion: -1,
    factoryGraphSnapshot: null,
    mixerHalfTimer: 0,
    congestion: new Map(),
    lastExplodedComponent: new Map(),
    contractOffer: null,
    contractActive: null,
    cardEffects: { bearing: 0, legalWork: 0, fairiesFlatteryNext: 0, crowdedFarming: 0, extraEggOutlet: 0, hatchingFeed: 0, safetyCover: 0, recyclingSubsidy: 0, chemicalWeaponSubsidy: 0, preventiveMaintenance: 0, dudFilter: 0, durabilityCoating: 0, laborExploitation: 0, usedMachineActive: false, rescueLoanCharges: 0, loans: [] },
    cardDraft: { pending: false, choices: [], rerolls: 0, picksRemaining: 0 },
    cardTargetPick: null,
    manualCombo: { count: 0, lastBonus: 0 },
    pendingRepairWorkerWages: 0,
    repairman: { hiredForNextDay: false, active: false, x: GRID.x + GRID.cell * 0.5, y: GRID.y + BALANCE.grid.rows * GRID.cell + 84, target: null, repairedToday: 0 },
    stats: newTurnStats(),
    lastResult: null,
    totals: newTotalStats()
  };
}

export function getSpawnRange(farm) {
  return EGG_SPAWN_RANGES[(farm?.level || 1) - 1] || EGG_SPAWN_RANGES[EGG_SPAWN_RANGES.length - 1] || [2, 4];
}

export function nextSpawnDelay(farm) {
  const [min, max] = getSpawnRange(farm);
  return randomBetween(min, max);
}

function facilityBodyForEntry(id, entry, side) {
  const def = FACILITY_DEFS[id];
  const spec = { ...def.body, name: def.name, price: def.price };
  const g = { left: GRID.x, right: GRID.x + GRID.cols * GRID.cell, top: GRID.y, bottom: GRID.y + GRID.rows * GRID.cell };
  const c = { x: GRID.x + entry.col * GRID.cell + GRID.cell / 2, y: GRID.y + entry.row * GRID.cell + GRID.cell / 2 };
  let x = c.x - spec.w / 2;
  let y = c.y - spec.h / 2;
  if (side === 'left') { x = g.left - spec.w - 18; y = c.y - spec.h / 2; }
  else if (side === 'right') { x = g.right + 18; y = c.y - spec.h / 2; }
  else if (side === 'bottom') { x = c.x - spec.w / 2; y = g.bottom + 18; }
  else if (side === 'top') { x = c.x - spec.w / 2; y = g.top - spec.h - 18; }
  return { type: 'facility', id, name: spec.name, x, y, w: spec.w, h: spec.h, level: 1, price: spec.price, entry: { ...entry }, side };
}

export function defaultFacilities() {
  return {
    // Initial grid is 20 columns × 10 rows. Machine bodies sit outside the starter grid.
    mixer: facilityBodyForEntry('mixer', { col: 0, row: 4 }, 'left'),
    trash: facilityBodyForEntry('trash', { col: 12, row: 9 }, 'bottom'),
    truck: facilityBodyForEntry('truck', { col: 18, row: 9 }, 'bottom')
  };
}

const INITIAL_CONVEYOR_BACKBONE = Object.freeze([
  // Egg Farm -> S1 top input. The S1/S2 rows were moved down so unrelated
  // belt streams keep at least one blank tile between side-by-side flows.
  [1, 1], [2, 1], [3, 1], [4, 1], [5, 1], [6, 1], [7, 1], [8, 1], [8, 2], [8, 3],
  // S1 left output -> Mixer receiver on the left grid edge.
  [7, 4], [6, 4], [5, 4], [4, 4], [3, 4], [2, 4], [1, 4], [0, 4],
  // S1 right output -> S2 top input.
  [9, 4], [10, 4], [11, 4], [12, 4], [13, 4], [14, 4], [15, 4], [15, 5], [15, 6],
  // S2 left output -> Waste Shredder receiver on bottom grid edge.
  [14, 7], [13, 7], [12, 7], [12, 8], [12, 9],
  // S2 right output -> Truck receiver on the bottom grid edge.
  [16, 7], [17, 7], [18, 7], [18, 8], [18, 9]
]);

const INITIAL_SCANNERS = Object.freeze([
  { type: 'scanner', id: 1, kind: 'manual', slot: 0, role: 0, col: 8, row: 4, level: 1, queue: [], cooldown: 0, price: BUILD_COSTS.manualScanner, builtSession: null, autoMode: 'standard', keys: { left: { key: 'a', code: 'KeyA', label: 'A' }, right: { key: 'd', code: 'KeyD', label: 'D' } } },
  { type: 'scanner', id: 2, kind: 'manual', slot: 1, role: 1, col: 15, row: 7, level: 1, queue: [], cooldown: 0, price: BUILD_COSTS.manualScanner, builtSession: null, autoMode: 'standard', keys: { left: { key: 'arrowleft', code: 'ArrowLeft', label: 'Left' }, right: { key: 'arrowright', code: 'ArrowRight', label: 'Right' } } }
]);

const INITIAL_EGG_FARMS = Object.freeze([
  { type: 'eggFarm', id: 1, col: 1, row: 0, level: 1, extraEggOutlet: 0, nextSpawn: 2, lastInterval: 2, spawnCounter: 0, price: BUILD_COSTS.eggFarm, builtSession: null }
]);

function addConveyorTile(game, col, row, options = {}) {
  if (!inGrid(col, row)) return;
  const k = key(col, row);
  game.conveyorTiles.add(k);
  if (!game.conveyorMeta.has(k) || options.forceMeta) {
    game.conveyorMeta.set(k, {
      price: BUILD_COSTS.conveyor,
      builtSession: null,
      uses: 0,
      durability: BALANCE.maintenance.durability.conveyor,
      maintenanceType: 'conveyor',
      dir: options.dir || null,
      outDirs: Array.isArray(options.outDirs) ? [...options.outDirs] : []
    });
  } else if (options.dir || options.outDirs) {
    const meta = game.conveyorMeta.get(k);
    if (options.dir) meta.dir = options.dir;
    if (Array.isArray(options.outDirs)) meta.outDirs = [...new Set([...(meta.outDirs || []), ...options.outDirs])];
  }
}

function ensureConveyorMeta(game, col, row) {
  const k = key(col, row);
  if (!game.conveyorMeta.has(k)) addConveyorTile(game, col, row);
  return game.conveyorMeta.get(k);
}

function markInitialConveyorDirection(game, from, to) {
  const dir = directionNameBetweenCells(from, to);
  if (!dir) return;
  const fromMeta = ensureConveyorMeta(game, from.col, from.row);
  fromMeta.outDirs = Array.isArray(fromMeta.outDirs) ? fromMeta.outDirs : [];
  if (!fromMeta.outDirs.includes(dir)) fromMeta.outDirs.push(dir);
  fromMeta.dir = dir;
  const toMeta = ensureConveyorMeta(game, to.col, to.row);
  if (!toMeta.dir) toMeta.dir = dir;
}

function scannerPortCells(scanner) {
  return [
    { col: scanner.col, row: scanner.row - 1 },
    { col: scanner.col - 1, row: scanner.row },
    { col: scanner.col + 1, row: scanner.row }
  ].filter(p => inGrid(p.col, p.row));
}

function farmOutputCells(farm) {
  return [
    { col: farm.col, row: farm.row + 1 },
    { col: farm.col - 1, row: farm.row },
    { col: farm.col + 1, row: farm.row },
    { col: farm.col, row: farm.row - 1 }
  ].filter(p => inGrid(p.col, p.row));
}

function protectedInitialCells(game) {
  const reserved = new Set([...game.conveyorTiles]);
  const add = p => { if (p && inGrid(p.col, p.row)) reserved.add(key(p.col, p.row)); };
  for (const scanner of game.scanners) {
    add(scanner);
    for (const p of scannerPortCells(scanner)) add(p);
  }
  for (const farm of game.eggFarms) {
    add(farm);
    for (const p of farmOutputCells(farm)) add(p);
  }
  for (const f of Object.values(game.facilities)) add(f.entry);
  return reserved;
}

function installInitialConveyorBackbone(game) {
  const cells = INITIAL_CONVEYOR_BACKBONE.map(([col, row]) => ({ col, row }));
  for (const { col, row } of cells) addConveyorTile(game, col, row);
  for (let i = 0; i < cells.length - 1; i += 1) markInitialConveyorDirection(game, cells[i], cells[i + 1]);
}

function scrubBlockedCellsFromInitialBackbone(game) {
  const protectedCells = protectedInitialCells(game);
  for (const k of protectedCells) game.blockedCells.delete(k);
}

export function resetLayout(game) {
  GRID.x = BALANCE.grid.x;
  GRID.y = BALANCE.grid.y;
  GRID.cols = BALANCE.grid.cols;
  GRID.rows = BALANCE.grid.rows;
  game.gridCols = GRID.cols;
  game.gridRows = GRID.rows;
  resetOwnedCells(game);
  game.gridOwnedCells = game.ownedCells.size;
  if (game.repairman) {
    game.repairman.x = GRID.x + GRID.cell * 0.5;
    game.repairman.y = GRID.y + GRID.rows * GRID.cell + 84;
    game.repairman.target = null;
    game.repairman.active = false;
    game.repairman.hiredForNextDay = false;
  }
  game.conveyorTiles.clear();
  game.conveyorMeta.clear();
  game.blockedCells = new Set();
  installInitialConveyorBackbone(game);
  game.facilities = defaultFacilities();
  game.scanners = INITIAL_SCANNERS.map(scanner => ({ ...scanner, keys: scanner.keys ? { left: { ...scanner.keys.left }, right: { ...scanner.keys.right } } : null, queue: [] }));
  game.eggFarms = INITIAL_EGG_FARMS.map(farm => {
    const nextSpawn = nextSpawnDelay(farm);
    return { ...farm, nextSpawn, lastInterval: nextSpawn };
  });

  // Generate no-build cells only after the complete initial factory footprint is
  // installed. The protected footprint includes every default conveyor segment,
  // scanner body/ports, farm output, and machine receiver. This guarantees that
  // the starter line is always continuous from Egg Farm -> S1 -> S2 -> exits even
  // when roughly 20% of the map is blocked.
  const reserved = protectedInitialCells(game);
  game.blockedCells = generateBlockedCells({ seed: game.runSeed, targetRatio: BALANCE.map.blockedRatio, reserved: [...reserved] });
  scrubBlockedCellsFromInitialBackbone(game);
  installInitialConveyorBackbone(game);
  game.routingVersion = (game.routingVersion || 0) + 1;
  game.factoryGraph = null;
  game.factoryGraphCommittedVersion = -1;
}