import { readFileSync, writeFileSync } from 'node:fs';

// 맵별 고정 카메라: 맵 로드 시 플레이어 CameraComponent를 data/camera.json 값으로 설정.
// 새 CameraComponent를 만들지 않고(엔진 소유) 기존 카메라 속성만 런타임 설정한다.
const CAM = JSON.parse(readFileSync('data/camera.json', 'utf8'));
const MAP_NUMBERS = Array.from({ length: 11 }, (_, i) => i + 1); // map01~11

function prop(Type, Name, DefaultValue = 'nil') {
  return { Type, DefaultValue, SyncDirection: 0, Attributes: [], Name };
}
function method(Name, Code, Arguments = [], ExecSpace = 6) {
  return {
    Return: { Type: 'void', DefaultValue: null, SyncDirection: 0, Attributes: [], Name: null },
    Arguments,
    Code,
    Scope: 2,
    ExecSpace,
    Attributes: [],
    Name,
  };
}

function writeCodeblock() {
  const cb = {
    Id: '',
    GameId: '',
    EntryKey: 'codeblock://mapcamera',
    ContentType: 'x-mod/codeblock',
    Content: '',
    Usage: 0,
    UsePublish: 1,
    UseService: 0,
    CoreVersion: '26.5.0.0',
    StudioVersion: '',
    DynamicLoading: 0,
    ContentProto: {
      Use: 'Json',
      Json: {
        CoreVersion: { Major: 0, Minor: 2 },
        ScriptVersion: { Major: 1, Minor: 0 },
        Description: '',
        Id: 'MapCamera',
        Language: 1,
        Name: 'MapCamera',
        Type: 1,
        Source: 0,
        Target: null,
        Properties: [prop('number', 'CamTries', '0')],
        Methods: [
          method('OnBeginPlay', `self.CamTries = 0
local eventId = 0
local function apply()
	self.CamTries = self.CamTries + 1
	local cam = nil
	local lp = _UserService.LocalPlayer
	if lp ~= nil then
		cam = lp.CameraComponent
	end
	if cam == nil then
		cam = _CameraService:GetCurrentCameraComponent()
	end
	if cam ~= nil then
		cam.ZoomRatio = ${CAM.zoomRatio}
		cam.ScreenOffset = Vector2(${CAM.screenOffsetX}, ${CAM.screenOffsetY})
		cam.ConfineCameraArea = ${CAM.confineCameraArea}
		cam.CameraOffset = Vector2(${CAM.cameraOffsetX}, ${CAM.cameraOffsetY})
	end
	local pc = nil
	if lp ~= nil then
		pc = lp.PlayerControllerComponent
		if pc ~= nil then
			pc.LookDirectionX = 1
			pc.FixedLookAt = true
			pc.Enable = false
		end
	end
	if cam ~= nil and pc ~= nil then
		_TimerService:ClearTimer(eventId)
	elseif self.CamTries > 30 then
		_TimerService:ClearTimer(eventId)
	end
end
eventId = _TimerService:SetTimerRepeat(apply, 0.1)`),
        ],
        EntityEventHandlers: [],
      },
    },
  };
  writeFileSync('RootDesk/MyDesk/MapCamera.codeblock', JSON.stringify(cb, null, 2), 'utf8');
}

function patchMap(nn) {
  const tag = String(nn).padStart(2, '0');
  const file = `map/map${tag}.map`;
  const map = JSON.parse(readFileSync(file, 'utf8'));
  const root = map.ContentProto.Entities.find((e) => e.path === `/maps/map${tag}`);
  if (!root) throw new Error(`[gen-camera] 맵 루트 없음: ${file}`);
  // idempotent: 기존 script.MapCamera 제거 후 재추가
  root.jsonString['@components'] = root.jsonString['@components'].filter((c) => c['@type'] !== 'script.MapCamera');
  root.jsonString['@components'].push({ '@type': 'script.MapCamera', Enable: true });
  const names = (root.componentNames || '').split(',').filter((s) => s && s !== 'script.MapCamera');
  names.push('script.MapCamera');
  root.componentNames = names.join(',');
  writeFileSync(file, JSON.stringify(map, null, 2), 'utf8');
  return `map${tag}`;
}

writeCodeblock();
const patched = MAP_NUMBERS.map(patchMap);
console.log('MapCamera codeblock written; patched maps:', patched.join(', '));