import { Player } from "@player";
import { purchaseAugmentation, joinFaction, getFactionAugmentationsFiltered } from "../Faction/FactionHelpers";
import { startWorkerScript } from "../NetscriptWorker";
import { Augmentation } from "../Augmentation/Augmentation";
import { StaticAugmentations } from "../Augmentation/StaticAugmentations";
import { augmentationExists, installAugmentations } from "../Augmentation/AugmentationHelpers";
import { AugmentationNames } from "../Augmentation/data/AugmentationNames";
import { CONSTANTS } from "../Constants";
import { isString } from "../utils/helpers/isString";
import { RunningScript } from "../Script/RunningScript";
import { calculateAchievements } from "../Achievements/Achievements";

import { Singularity as ISingularity } from "@nsdefs";

import { findCrime } from "../Crime/CrimeHelpers";
import { CompanyPositions } from "../Company/CompanyPositions";
import { DarkWebItems } from "../DarkWeb/DarkWebItems";
import { CityName, LocationName, JobName } from "../Enums";
import { Router } from "../ui/GameRoot";
import { SpecialServers } from "../Server/data/SpecialServers";
import { Page } from "../ui/Router";
import { Locations } from "../Locations/Locations";
import { GetServer } from "../Server/AllServers";
import { Programs } from "../Programs/Programs";
import { formatMoney, formatRam, formatReputation } from "../ui/formatNumber";
import { BitNodeMultipliers } from "../BitNode/BitNodeMultipliers";
import { Company } from "../Company/Company";
import { Companies } from "../Company/Companies";
import { companiesMetadata } from "../Company/data/CompaniesMetadata";
import { Factions, factionExists } from "../Faction/Factions";
import { Faction } from "../Faction/Faction";
import { helpers } from "../Netscript/NetscriptHelpers";
import { convertTimeMsToTimeElapsedString } from "../utils/StringHelperFunctions";
import { getServerOnNetwork } from "../Server/ServerHelpers";
import { Terminal } from "../Terminal";
import { calculateHackingTime } from "../Hacking";
import { Server } from "../Server/Server";
import { netscriptCanHack } from "../Hacking/netscriptCanHack";
import { FactionInfos } from "../Faction/FactionInfo";
import { InternalAPI, NetscriptContext, removedFunction } from "../Netscript/APIWrapper";
import { BlackOperationNames } from "../Bladeburner/data/BlackOperationNames";
import { enterBitNode } from "../RedPill";
import { FactionNames } from "../Faction/data/FactionNames";
import { ClassWork } from "../Work/ClassWork";
import { CreateProgramWork, isCreateProgramWork } from "../Work/CreateProgramWork";
import { FactionWork } from "../Work/FactionWork";
import { FactionWorkType, GymType, UniversityClassType } from "../Enums";
import { CompanyWork } from "../Work/CompanyWork";
import { canGetBonus, onExport } from "../ExportBonus";
import { saveObject } from "../SaveObject";
import { calculateCrimeWorkStats } from "../Work/Formulas";
import { findEnumMember } from "../utils/helpers/enum";
import { areFilesEqual } from "../Terminal/DirectoryHelpers";
import { Engine } from "../engine";
import { checkEnum } from "../utils/helpers/enum";

export function NetscriptSingularity(): InternalAPI<ISingularity> {
  const getAugmentation = function (ctx: NetscriptContext, name: string): Augmentation {
    if (!augmentationExists(name)) {
      throw helpers.makeRuntimeErrorMsg(ctx, `Invalid augmentation: '${name}'`);
    }

    return StaticAugmentations[name];
  };

  const getFaction = function (ctx: NetscriptContext, name: string): Faction {
    if (!factionExists(name)) {
      throw helpers.makeRuntimeErrorMsg(ctx, `Invalid faction name: '${name}`);
    }

    return Factions[name];
  };

  const getCompany = function (ctx: NetscriptContext, name: string): Company {
    const company = Companies[name];
    if (!company) throw helpers.makeRuntimeErrorMsg(ctx, `Invalid company name: '${name}'`);
    return company;
  };

  const runAfterReset = function (cbScript: string | null = null) {
    //Run a script after reset
    if (!cbScript) return;
    const home = Player.getHomeComputer();
    const script = home.scripts.find((serverScript) => areFilesEqual(serverScript.filename, cbScript));
    if (!script) return;
    const ramUsage = script.getRamUsage(home.scripts);
    if (!ramUsage) {
      return Terminal.error(`Attempted to launch ${cbScript} after reset but could not calculate ram usage.`);
    }
    const ramAvailable = home.maxRam - home.ramUsed;
    if (ramUsage > ramAvailable + 0.001) return;
    // Start script with no args and 1 thread (default).
    const runningScriptObj = new RunningScript(script, ramUsage, []);
    startWorkerScript(runningScriptObj, home);
  };

  const singularityAPI: InternalAPI<ISingularity> = {
    getOwnedAugmentations: (ctx) => (_purchased) => {
      helpers.checkSingularityAccess(ctx);
      const purchased = !!_purchased;
      const res: string[] = [];
      for (let i = 0; i < Player.augmentations.length; ++i) {
        res.push(Player.augmentations[i].name);
      }
      if (purchased) {
        for (let i = 0; i < Player.queuedAugmentations.length; ++i) {
          res.push(Player.queuedAugmentations[i].name);
        }
      }
      return res;
    },
    getOwnedSourceFiles: () => () => {
      return Player.sourceFiles.map((sf) => {
        return { n: sf.n, lvl: sf.lvl };
      });
    },
    getAugmentationsFromFaction: (ctx) => (_facName) => {
      helpers.checkSingularityAccess(ctx);
      const facName = helpers.string(ctx, "facName", _facName);
      const faction = getFaction(ctx, facName);

      return getFactionAugmentationsFiltered(faction);
    },
    getAugmentationPrereq: (ctx) => (_augName) => {
      helpers.checkSingularityAccess(ctx);
      const augName = helpers.string(ctx, "augName", _augName);
      const aug = getAugmentation(ctx, augName);
      return aug.prereqs.slice();
    },
    getAugmentationBasePrice: (ctx) => (_augName) => {
      helpers.checkSingularityAccess(ctx);
      const augName = helpers.string(ctx, "augName", _augName);
      const aug = getAugmentation(ctx, augName);
      return aug.baseCost * BitNodeMultipliers.AugmentationMoneyCost;
    },
    getAugmentationPrice: (ctx) => (_augName) => {
      helpers.checkSingularityAccess(ctx);
      const augName = helpers.string(ctx, "augName", _augName);
      const aug = getAugmentation(ctx, augName);
      return aug.getCost().moneyCost;
    },
    getAugmentationRepReq: (ctx) => (_augName) => {
      helpers.checkSingularityAccess(ctx);
      const augName = helpers.string(ctx, "augName", _augName);
      const aug = getAugmentation(ctx, augName);
      return aug.getCost().repCost;
    },
    getAugmentationStats: (ctx) => (_augName) => {
      helpers.checkSingularityAccess(ctx);
      const augName = helpers.string(ctx, "augName", _augName);
      const aug = getAugmentation(ctx, augName);
      return Object.assign({}, aug.mults);
    },
    purchaseAugmentation: (ctx) => (_facName, _augName) => {
      helpers.checkSingularityAccess(ctx);
      const facName = helpers.string(ctx, "facName", _facName);
      const augName = helpers.string(ctx, "augName", _augName);
      const fac = getFaction(ctx, facName);
      const aug = getAugmentation(ctx, augName);

      const augs = getFactionAugmentationsFiltered(fac);

      if (!Player.factions.includes(fac.name)) {
        helpers.log(ctx, () => `You can't purchase augmentations from '${facName}' because you aren't a member`);
        return false;
      }

      if (!augs.includes(augName)) {
        helpers.log(ctx, () => `Faction '${facName}' does not have the '${augName}' augmentation.`);
        return false;
      }

      const isNeuroflux = aug.name === AugmentationNames.NeuroFluxGovernor;
      if (!isNeuroflux) {
        for (let j = 0; j < Player.queuedAugmentations.length; ++j) {
          if (Player.queuedAugmentations[j].name === aug.name) {
            helpers.log(ctx, () => `You already have the '${augName}' augmentation.`);
            return false;
          }
        }
        for (let j = 0; j < Player.augmentations.length; ++j) {
          if (Player.augmentations[j].name === aug.name) {
            helpers.log(ctx, () => `You already have the '${augName}' augmentation.`);
            return false;
          }
        }
      }

      if (fac.playerReputation < aug.getCost().repCost) {
        helpers.log(ctx, () => `You do not have enough reputation with '${fac.name}'.`);
        return false;
      }

      const res = purchaseAugmentation(aug, fac, true);
      helpers.log(ctx, () => res);
      if (isString(res) && res.startsWith("You purchased")) {
        Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain * 10);
        return true;
      } else {
        return false;
      }
    },
    softReset: (ctx) => (_cbScript) => {
      helpers.checkSingularityAccess(ctx);
      const cbScript = _cbScript ? helpers.string(ctx, "cbScript", _cbScript) : "";

      helpers.log(ctx, () => "Soft resetting. This will cause this script to be killed");
      installAugmentations(true);
      if (cbScript) setTimeout(() => runAfterReset(cbScript), 500);
    },
    installAugmentations: (ctx) => (_cbScript) => {
      helpers.checkSingularityAccess(ctx);
      const cbScript = _cbScript ? helpers.string(ctx, "cbScript", _cbScript) : "";

      if (Player.queuedAugmentations.length === 0) {
        helpers.log(ctx, () => "You do not have any Augmentations to be installed.");
        return false;
      }
      Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain * 10);
      helpers.log(ctx, () => "Installing Augmentations. This will cause this script to be killed");
      installAugmentations();
      if (cbScript) setTimeout(() => runAfterReset(cbScript), 500);
    },

    goToLocation: (ctx) => (_locationName) => {
      helpers.checkSingularityAccess(ctx);
      const locationName = helpers.string(ctx, "locationName", _locationName);
      const location = Object.values(Locations).find((l) => l.name === locationName);
      if (!location) {
        helpers.log(ctx, () => `No location named ${locationName}`);
        return false;
      }
      if (location.city && Player.city !== location.city) {
        helpers.log(ctx, () => `No location named ${locationName} in ${Player.city}`);
        return false;
      }
      if (location.name === LocationName.TravelAgency) {
        Router.toPage(Page.Travel);
      } else if (location.name === LocationName.WorldStockExchange) {
        Router.toPage(Page.StockMarket);
      } else {
        Router.toLocation(location);
      }
      Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain / 50000);
      return true;
    },
    universityCourse:
      (ctx) =>
      (_universityName, _className, _focus = true) => {
        helpers.checkSingularityAccess(ctx);
        const universityName = helpers.string(ctx, "universityName", _universityName);
        const classType = findEnumMember(UniversityClassType, helpers.string(ctx, "className", _className));
        if (!classType) {
          helpers.log(ctx, () => `Invalid class name: ${_className}.`);
          return false;
        }
        const focus = !!_focus;
        const wasFocusing = Player.focus;

        switch (universityName.toLowerCase()) {
          case LocationName.AevumSummitUniversity.toLowerCase():
            if (Player.city != CityName.Aevum) {
              helpers.log(
                ctx,
                () => `You cannot study at 'Summit University' because you are not in '${CityName.Aevum}'.`,
              );
              return false;
            }
            Player.gotoLocation(LocationName.AevumSummitUniversity);
            break;
          case LocationName.Sector12RothmanUniversity.toLowerCase():
            if (Player.city != CityName.Sector12) {
              helpers.log(
                ctx,
                () => `You cannot study at 'Rothman University' because you are not in '${CityName.Sector12}'.`,
              );
              return false;
            }
            Player.location = LocationName.Sector12RothmanUniversity;
            break;
          case LocationName.VolhavenZBInstituteOfTechnology.toLowerCase():
            if (Player.city != CityName.Volhaven) {
              helpers.log(
                ctx,
                () => `You cannot study at 'ZB Institute of Technology' because you are not in '${CityName.Volhaven}'.`,
              );
              return false;
            }
            Player.location = LocationName.VolhavenZBInstituteOfTechnology;
            break;
          default:
            helpers.log(ctx, () => `Invalid university name: '${universityName}'.`);
            return false;
        }

        Player.startWork(
          new ClassWork({
            classType,
            location: Player.location,
            singularity: true,
          }),
        );
        if (focus) {
          Player.startFocusing();
          Router.toPage(Page.Work);
        } else if (wasFocusing) {
          Player.stopFocusing();
          Router.toPage(Page.Terminal);
        }
        helpers.log(ctx, () => `Started ${classType} at ${universityName}`);
        return true;
      },

    gymWorkout:
      (ctx) =>
      (_gymName, _stat, _focus = true) => {
        helpers.checkSingularityAccess(ctx);
        const gymName = helpers.string(ctx, "gymName", _gymName);
        const classType = findEnumMember(GymType, helpers.string(ctx, "stat", _stat));
        if (!classType) {
          helpers.log(ctx, () => `Invalid stat: ${_stat}.`);
          return false;
        }
        const focus = !!_focus;
        const wasFocusing = Player.focus;

        switch (gymName.toLowerCase()) {
          case LocationName.AevumCrushFitnessGym.toLowerCase():
            if (Player.city != CityName.Aevum) {
              helpers.log(
                ctx,
                () =>
                  `You cannot workout at '${LocationName.AevumCrushFitnessGym}' because you are not in '${CityName.Aevum}'.`,
              );
              return false;
            }
            Player.location = LocationName.AevumCrushFitnessGym;
            break;
          case LocationName.AevumSnapFitnessGym.toLowerCase():
            if (Player.city != CityName.Aevum) {
              helpers.log(
                ctx,
                () =>
                  `You cannot workout at '${LocationName.AevumSnapFitnessGym}' because you are not in '${CityName.Aevum}'.`,
              );
              return false;
            }
            Player.location = LocationName.AevumSnapFitnessGym;
            break;
          case LocationName.Sector12IronGym.toLowerCase():
            if (Player.city != CityName.Sector12) {
              helpers.log(
                ctx,
                () =>
                  `You cannot workout at '${LocationName.Sector12IronGym}' because you are not in '${CityName.Sector12}'.`,
              );
              return false;
            }
            Player.location = LocationName.Sector12IronGym;
            break;
          case LocationName.Sector12PowerhouseGym.toLowerCase():
            if (Player.city != CityName.Sector12) {
              helpers.log(
                ctx,
                () =>
                  `You cannot workout at '${LocationName.Sector12PowerhouseGym}' because you are not in '${CityName.Sector12}'.`,
              );
              return false;
            }
            Player.location = LocationName.Sector12PowerhouseGym;
            break;
          case LocationName.VolhavenMilleniumFitnessGym.toLowerCase():
            if (Player.city != CityName.Volhaven) {
              helpers.log(
                ctx,
                () =>
                  `You cannot workout at '${LocationName.VolhavenMilleniumFitnessGym}' because you are not in '${CityName.Volhaven}'.`,
              );
              return false;
            }
            Player.location = LocationName.VolhavenMilleniumFitnessGym;
            break;
          default:
            helpers.log(ctx, () => `Invalid gym name: ${gymName}. gymWorkout() failed`);
            return false;
        }

        Player.startWork(new ClassWork({ classType, location: Player.location, singularity: true }));
        if (focus) {
          Player.startFocusing();
          Router.toPage(Page.Work);
        } else if (wasFocusing) {
          Player.stopFocusing();
          Router.toPage(Page.Terminal);
        }
        helpers.log(ctx, () => `Started training ${classType} at ${gymName}`);
        return true;
      },

    travelToCity: (ctx) => (_cityName) => {
      helpers.checkSingularityAccess(ctx);
      const cityName = helpers.city(ctx, "cityName", _cityName);

      switch (cityName) {
        case CityName.Aevum:
        case CityName.Chongqing:
        case CityName.Sector12:
        case CityName.NewTokyo:
        case CityName.Ishima:
        case CityName.Volhaven:
          if (Player.money < CONSTANTS.TravelCost) {
            helpers.log(ctx, () => "Not enough money to travel.");
            return false;
          }
          Player.loseMoney(CONSTANTS.TravelCost, "other");
          Player.city = cityName;
          helpers.log(ctx, () => `Traveled to ${cityName}`);
          Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain / 50000);
          return true;
        default:
          throw helpers.makeRuntimeErrorMsg(ctx, `Invalid city name: '${cityName}'.`);
      }
    },

    purchaseTor: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);

      if (Player.hasTorRouter()) {
        helpers.log(ctx, () => "You already have a TOR router!");
        return true;
      }

      if (Player.money < CONSTANTS.TorRouterCost) {
        helpers.log(ctx, () => "You cannot afford to purchase a Tor router.");
        return false;
      }
      Player.loseMoney(CONSTANTS.TorRouterCost, "other");

      const darkweb = GetServer(SpecialServers.DarkWeb);
      if (!darkweb) throw helpers.makeRuntimeErrorMsg(ctx, "DarkWeb was not a server but should have been");

      Player.getHomeComputer().serversOnNetwork.push(darkweb.hostname);
      darkweb.serversOnNetwork.push(Player.getHomeComputer().hostname);
      Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain / 500);
      helpers.log(ctx, () => "You have purchased a Tor router!");
      return true;
    },
    purchaseProgram: (ctx) => (_programName) => {
      helpers.checkSingularityAccess(ctx);
      const programName = helpers.string(ctx, "programName", _programName).toLowerCase();

      if (!Player.hasTorRouter()) {
        helpers.log(ctx, () => "You do not have the TOR router.");
        return false;
      }

      const item = Object.values(DarkWebItems).find((i) => i.program.toLowerCase() === programName);
      if (item == null) {
        helpers.log(ctx, () => `Invalid program name: '${programName}.`);
        return false;
      }

      if (Player.money < item.price) {
        helpers.log(ctx, () => `Not enough money to purchase '${item.program}'. Need ${formatMoney(item.price)}`);
        return false;
      }

      if (Player.hasProgram(item.program)) {
        helpers.log(ctx, () => `You already have the '${item.program}' program`);
        return true;
      }

      Player.getHomeComputer().pushProgram(item.program);
      // Cancel if the program is in progress of writing
      if (isCreateProgramWork(Player.currentWork) && Player.currentWork.programName === item.program) {
        Player.finishWork(true);
      }

      Player.loseMoney(item.price, "other");
      helpers.log(
        ctx,
        () => `You have purchased the '${item.program}' program. The new program can be found on your home computer.`,
      );
      Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain / 5000);
      return true;
    },
    getCurrentServer: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      return Player.getCurrentServer().hostname;
    },
    connect: (ctx) => (_hostname) => {
      helpers.checkSingularityAccess(ctx);
      const hostname = helpers.string(ctx, "hostname", _hostname);
      if (!hostname) {
        throw helpers.makeRuntimeErrorMsg(ctx, `Invalid hostname: '${hostname}'`);
      }

      const target = GetServer(hostname);
      if (target == null) {
        throw helpers.makeRuntimeErrorMsg(ctx, `Invalid hostname: '${hostname}'`);
      }

      //Home case
      if (hostname === "home") {
        Player.getCurrentServer().isConnectedTo = false;
        Player.currentServer = Player.getHomeComputer().hostname;
        Player.getCurrentServer().isConnectedTo = true;
        Terminal.setcwd("/");
        return true;
      }

      //Adjacent server case
      const server = Player.getCurrentServer();
      for (let i = 0; i < server.serversOnNetwork.length; i++) {
        const other = getServerOnNetwork(server, i);
        if (other === null) continue;
        if (other.hostname == hostname) {
          Player.getCurrentServer().isConnectedTo = false;
          Player.currentServer = target.hostname;
          Player.getCurrentServer().isConnectedTo = true;
          Terminal.setcwd("/");
          return true;
        }
      }

      //Backdoor case
      const other = GetServer(hostname);
      if (other !== null && other instanceof Server && other.backdoorInstalled) {
        Player.getCurrentServer().isConnectedTo = false;
        Player.currentServer = target.hostname;
        Player.getCurrentServer().isConnectedTo = true;
        Terminal.setcwd("/");
        return true;
      }

      //Failure case
      return false;
    },
    manualHack: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      const server = Player.getCurrentServer();
      return helpers.hack(ctx, server.hostname, true);
    },
    installBackdoor: (ctx) => async (): Promise<void> => {
      helpers.checkSingularityAccess(ctx);
      const baseserver = Player.getCurrentServer();
      if (!(baseserver instanceof Server)) {
        helpers.log(ctx, () => "cannot backdoor this kind of server");
        return Promise.resolve();
      }
      const server = baseserver;
      const installTime = (calculateHackingTime(server, Player) / 4) * 1000;

      // No root access or skill level too low
      const canHack = netscriptCanHack(server);
      if (!canHack.res) {
        throw helpers.makeRuntimeErrorMsg(ctx, canHack.msg || "");
      }

      helpers.log(
        ctx,
        () => `Installing backdoor on '${server.hostname}' in ${convertTimeMsToTimeElapsedString(installTime, true)}`,
      );

      return helpers.netscriptDelay(ctx, installTime).then(function () {
        helpers.log(ctx, () => `Successfully installed backdoor on '${server.hostname}'`);
        server.backdoorInstalled = true;

        if (SpecialServers.WorldDaemon === server.hostname) {
          return Router.toBitVerse(false, false);
        }
        // Manunally check for faction invites
        Engine.Counters.checkFactionInvitations = 0;
        Engine.checkCounters();
      });
    },
    isFocused: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      return Player.focus;
    },
    setFocus: (ctx) => (_focus) => {
      helpers.checkSingularityAccess(ctx);
      const focus = !!_focus;
      if (Player.currentWork === null) {
        throw helpers.makeRuntimeErrorMsg(ctx, "Not currently working");
      }

      if (!Player.focus && focus) {
        Player.startFocusing();
        Router.toPage(Page.Work);
        return true;
      } else if (Player.focus && !focus) {
        Player.stopFocusing();
        Router.toPage(Page.Terminal);
        return true;
      }
      return false;
    },
    hospitalize: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      if (Player.currentWork || Router.page() === Page.Infiltration || Router.page() === Page.BitVerse) {
        helpers.log(ctx, () => "Cannot go to the hospital because the player is busy.");
        return;
      }
      Player.hospitalize();
    },
    isBusy: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      return Player.currentWork !== null || Router.page() === Page.Infiltration || Router.page() === Page.BitVerse;
    },
    stopAction: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      const wasWorking = Player.currentWork !== null;
      Player.finishWork(true);
      return wasWorking;
    },
    upgradeHomeCores: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);

      // Check if we're at max cores
      const homeComputer = Player.getHomeComputer();
      if (homeComputer.cpuCores >= 8) {
        helpers.log(ctx, () => `Your home computer is at max cores.`);
        return false;
      }

      const cost = Player.getUpgradeHomeCoresCost();
      if (Player.money < cost) {
        helpers.log(ctx, () => `You don't have enough money. Need ${formatMoney(cost)}`);
        return false;
      }

      homeComputer.cpuCores += 1;
      Player.loseMoney(cost, "servers");

      Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain * 2);
      helpers.log(
        ctx,
        () => `Purchased an additional core for home computer! It now has ${homeComputer.cpuCores} cores.`,
      );
      return true;
    },
    getUpgradeHomeCoresCost: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);

      return Player.getUpgradeHomeCoresCost();
    },
    upgradeHomeRam: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);

      // Check if we're at max RAM
      const homeComputer = Player.getHomeComputer();
      if (homeComputer.maxRam >= CONSTANTS.HomeComputerMaxRam) {
        helpers.log(ctx, () => `Your home computer is at max RAM.`);
        return false;
      }

      const cost = Player.getUpgradeHomeRamCost();
      if (Player.money < cost) {
        helpers.log(ctx, () => `You don't have enough money. Need ${formatMoney(cost)}`);
        return false;
      }

      homeComputer.maxRam *= 2;
      Player.loseMoney(cost, "servers");

      Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain * 2);
      helpers.log(
        ctx,
        () => `Purchased additional RAM for home computer! It now has ${formatRam(homeComputer.maxRam)} of RAM.`,
      );
      return true;
    },
    getUpgradeHomeRamCost: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);

      return Player.getUpgradeHomeRamCost();
    },
    getCompanyPositions: (ctx) => (_companyName) => {
      helpers.checkSingularityAccess(ctx);
      const companyName = helpers.string(ctx, "companyName", _companyName);

      // Make sure its a valid company
      if (companyName == null || companyName === "" || !Companies[companyName]) {
        throw helpers.makeRuntimeErrorMsg(ctx, `Invalid company: '${companyName}'`);
      }

      return Object.entries(CompanyPositions)
        .filter((_position) => Companies[companyName].hasPosition(_position[0]))
        .map((_position) => _position[1]["name"]);
    },
    getCompanyPositionInfo: (ctx) => (_companyName, _positionName) => {
      helpers.checkSingularityAccess(ctx);
      const companyName = helpers.string(ctx, "companyName", _companyName);
      const positionName = helpers.string(ctx, "positionName", _positionName);

      // Make sure its a valid company
      if (!(companyName in Companies)) {
        throw helpers.makeRuntimeErrorMsg(ctx, `Invalid company: '${companyName}'`);
      }

      // Make sure its a valid position
      if (!checkEnum(JobName, positionName)) {
        throw helpers.makeRuntimeErrorMsg(ctx, `Invalid position: '${positionName}'`);
      }

      if (!Companies[companyName].hasPosition(positionName)) {
        throw helpers.makeRuntimeErrorMsg(ctx, `Company '${companyName}' does not have position '${positionName}'`);
      }

      const c = CompanyPositions[positionName];
      const n = companiesMetadata.filter((company) => company.name === companyName)[0];
      const res = {
        name: CompanyPositions[positionName].name,
        nextPosition: CompanyPositions[positionName].nextPosition,
        salary: CompanyPositions[positionName].baseSalary * n.salaryMultiplier,
        requiredReputation: CompanyPositions[positionName].requiredReputation,
        requiredSkills: {
          hacking: c.requiredHacking > 0 ? c.requiredHacking + n.jobStatReqOffset : 0,
          strength: c.requiredStrength > 0 ? c.requiredStrength + n.jobStatReqOffset : 0,
          defense: c.requiredDefense > 0 ? c.requiredDefense + n.jobStatReqOffset : 0,
          dexterity: c.requiredDexterity > 0 ? c.requiredDexterity + n.jobStatReqOffset : 0,
          agility: c.requiredAgility > 0 ? c.requiredAgility + n.jobStatReqOffset : 0,
          charisma: c.requiredCharisma > 0 ? c.requiredCharisma + n.jobStatReqOffset : 0,
          intelligence: 0,
        },
      };
      return res;
    },
    workForCompany:
      (ctx) =>
      (_companyName, _focus = true) => {
        helpers.checkSingularityAccess(ctx);
        const companyName = helpers.string(ctx, "companyName", _companyName);
        const focus = !!_focus;

        // Make sure its a valid company
        if (companyName == null || companyName === "" || !Companies[companyName]) {
          throw helpers.makeRuntimeErrorMsg(ctx, `Invalid company: '${companyName}'`);
        }

        // Make sure player is actually employed at the company
        if (!Object.keys(Player.jobs).includes(companyName)) {
          throw helpers.makeRuntimeErrorMsg(ctx, `You do not have a job at: '${companyName}'`);
        }

        // Check to make sure company position data is valid
        const companyPositionName = Player.jobs[companyName];
        const companyPosition = CompanyPositions[companyPositionName];
        if (companyPositionName === "" || !companyPosition) {
          throw helpers.makeRuntimeErrorMsg(ctx, `You do not have a job`);
        }

        const wasFocused = Player.focus;

        Player.startWork(
          new CompanyWork({
            singularity: true,
            companyName: companyName,
          }),
        );
        if (focus) {
          Player.startFocusing();
          Router.toPage(Page.Work);
        } else if (wasFocused) {
          Player.stopFocusing();
          Router.toPage(Page.Terminal);
        }
        helpers.log(ctx, () => `Began working at '${companyName}' with position '${companyPositionName}'`);
        return true;
      },
    applyToCompany: (ctx) => (_companyName, _field) => {
      helpers.checkSingularityAccess(ctx);
      const companyName = helpers.string(ctx, "companyName", _companyName);
      const field = helpers.string(ctx, "field", _field);
      getCompany(ctx, companyName);

      Player.location = companyName as LocationName;
      let res;
      switch (field.toLowerCase()) {
        case "software":
          res = Player.applyForSoftwareJob(true);
          break;
        case "software consultant":
          res = Player.applyForSoftwareConsultantJob(true);
          break;
        case "it":
          res = Player.applyForItJob(true);
          break;
        case "security engineer":
          res = Player.applyForSecurityEngineerJob(true);
          break;
        case "network engineer":
          res = Player.applyForNetworkEngineerJob(true);
          break;
        case "business":
          res = Player.applyForBusinessJob(true);
          break;
        case "business consultant":
          res = Player.applyForBusinessConsultantJob(true);
          break;
        case "security":
          res = Player.applyForSecurityJob(true);
          break;
        case "agent":
          res = Player.applyForAgentJob(true);
          break;
        case "employee":
          res = Player.applyForEmployeeJob(true);
          break;
        case "part-time employee":
          res = Player.applyForPartTimeEmployeeJob(true);
          break;
        case "waiter":
          res = Player.applyForWaiterJob(true);
          break;
        case "part-time waiter":
          res = Player.applyForPartTimeWaiterJob(true);
          break;
        default:
          helpers.log(ctx, () => `Invalid job: '${field}'.`);
          return false;
      }
      // TODO https://github.com/danielyxie/bitburner/issues/1378
      // The player object's applyForJob function can return string with special error messages
      // if (isString(res)) {
      //   helpers.log(ctx,"applyToCompany",()=> res);
      //   return false;
      // }
      if (res) {
        helpers.log(
          ctx,
          () => `You were offered a new job at '${companyName}' with position '${Player.jobs[companyName]}'`,
        );
      } else {
        helpers.log(ctx, () => `You failed to get a new job/promotion at '${companyName}' in the '${field}' field.`);
      }
      return res;
    },
    quitJob: (ctx) => (_companyName) => {
      helpers.checkSingularityAccess(ctx);
      const companyName = helpers.string(ctx, "companyName", _companyName);
      Player.quitJob(companyName);
    },
    getCompanyRep: (ctx) => (_companyName) => {
      helpers.checkSingularityAccess(ctx);
      const companyName = helpers.string(ctx, "companyName", _companyName);
      const company = getCompany(ctx, companyName);
      return company.playerReputation;
    },
    getCompanyFavor: (ctx) => (_companyName) => {
      helpers.checkSingularityAccess(ctx);
      const companyName = helpers.string(ctx, "companyName", _companyName);
      const company = getCompany(ctx, companyName);
      return company.favor;
    },
    getCompanyFavorGain: (ctx) => (_companyName) => {
      helpers.checkSingularityAccess(ctx);
      const companyName = helpers.string(ctx, "companyName", _companyName);
      const company = getCompany(ctx, companyName);
      return company.getFavorGain();
    },
    checkFactionInvitations: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      // Manually trigger a check for faction invites
      Engine.Counters.checkFactionInvitations = 0;
      Engine.checkCounters();
      // Make a copy of player.factionInvitations
      return Player.factionInvitations.slice();
    },
    joinFaction: (ctx) => (_facName) => {
      helpers.checkSingularityAccess(ctx);
      const facName = helpers.string(ctx, "facName", _facName);
      getFaction(ctx, facName);

      if (!Player.factionInvitations.includes(facName)) {
        helpers.log(ctx, () => `You have not been invited by faction '${facName}'`);
        return false;
      }
      const fac = Factions[facName];
      joinFaction(fac);

      // Update Faction Invitation list to account for joined + banned factions
      for (let i = 0; i < Player.factionInvitations.length; ++i) {
        if (Player.factionInvitations[i] == facName || Factions[Player.factionInvitations[i]].isBanned) {
          Player.factionInvitations.splice(i, 1);
          i--;
        }
      }
      Player.gainIntelligenceExp(CONSTANTS.IntelligenceSingFnBaseExpGain * 5);
      helpers.log(ctx, () => `Joined the '${facName}' faction.`);
      return true;
    },
    workForFaction:
      (ctx) =>
      (_facName, _type, _focus = true) => {
        helpers.checkSingularityAccess(ctx);
        const facName = helpers.string(ctx, "facName", _facName);
        const type = helpers.string(ctx, "type", _type);
        const focus = !!_focus;
        const faction = getFaction(ctx, facName);

        // if the player is in a gang and the target faction is any of the gang faction, fail
        if (Player.gang && faction.name === Player.getGangFaction().name) {
          helpers.log(ctx, () => `You can't work for '${facName}' because youre managing a gang for it`);
          return false;
        }

        if (!Player.factions.includes(facName)) {
          helpers.log(ctx, () => `You are not a member of '${facName}'`);
          return false;
        }

        const wasFocusing = Player.focus;

        switch (type.toLowerCase()) {
          case "hacking":
          case "hacking contracts":
          case "hackingcontracts":
            if (!FactionInfos[faction.name].offerHackingWork) {
              helpers.log(ctx, () => `Faction '${faction.name}' do not need help with hacking contracts.`);
              return false;
            }
            Player.startWork(
              new FactionWork({
                singularity: true,
                factionWorkType: FactionWorkType.hacking,
                faction: faction.name,
              }),
            );
            if (focus) {
              Player.startFocusing();
              Router.toPage(Page.Work);
            } else if (wasFocusing) {
              Player.stopFocusing();
              Router.toPage(Page.Terminal);
            }
            helpers.log(ctx, () => `Started carrying out hacking contracts for '${faction.name}'`);
            return true;
          case "field":
          case "fieldwork":
          case "field work":
            if (!FactionInfos[faction.name].offerFieldWork) {
              helpers.log(ctx, () => `Faction '${faction.name}' do not need help with field missions.`);
              return false;
            }
            Player.startWork(
              new FactionWork({
                singularity: true,
                factionWorkType: FactionWorkType.field,
                faction: faction.name,
              }),
            );
            if (focus) {
              Player.startFocusing();
              Router.toPage(Page.Work);
            } else if (wasFocusing) {
              Player.stopFocusing();
              Router.toPage(Page.Terminal);
            }
            helpers.log(ctx, () => `Started carrying out field missions for '${faction.name}'`);
            return true;
          case "security":
          case "securitywork":
          case "security work":
            if (!FactionInfos[faction.name].offerSecurityWork) {
              helpers.log(ctx, () => `Faction '${faction.name}' do not need help with security work.`);
              return false;
            }
            Player.startWork(
              new FactionWork({
                singularity: true,
                factionWorkType: FactionWorkType.security,
                faction: faction.name,
              }),
            );
            if (focus) {
              Player.startFocusing();
              Router.toPage(Page.Work);
            } else if (wasFocusing) {
              Player.stopFocusing();
              Router.toPage(Page.Terminal);
            }
            helpers.log(ctx, () => `Started carrying out security work for '${faction.name}'`);
            return true;
          default:
            helpers.log(ctx, () => `Invalid work type: '${type}`);
            return false;
        }
      },
    getFactionRep: (ctx) => (_facName) => {
      helpers.checkSingularityAccess(ctx);
      const facName = helpers.string(ctx, "facName", _facName);
      const faction = getFaction(ctx, facName);
      return faction.playerReputation;
    },
    getFactionFavor: (ctx) => (_facName) => {
      helpers.checkSingularityAccess(ctx);
      const facName = helpers.string(ctx, "facName", _facName);
      const faction = getFaction(ctx, facName);
      return faction.favor;
    },
    getFactionFavorGain: (ctx) => (_facName) => {
      helpers.checkSingularityAccess(ctx);
      const facName = helpers.string(ctx, "facName", _facName);
      const faction = getFaction(ctx, facName);
      return faction.getFavorGain();
    },
    donateToFaction: (ctx) => (_facName, _amt) => {
      helpers.checkSingularityAccess(ctx);
      const facName = helpers.string(ctx, "facName", _facName);
      const amt = helpers.number(ctx, "amt", _amt);
      const faction = getFaction(ctx, facName);
      if (!Player.factions.includes(faction.name)) {
        helpers.log(ctx, () => `You can't donate to '${facName}' because you aren't a member`);
        return false;
      }
      if (Player.gang && faction.name === Player.getGangFaction().name) {
        helpers.log(ctx, () => `You can't donate to '${facName}' because youre managing a gang for it`);
        return false;
      }
      if (faction.name === FactionNames.ChurchOfTheMachineGod || faction.name === FactionNames.Bladeburners) {
        helpers.log(ctx, () => `You can't donate to '${facName}' because they do not accept donations`);
        return false;
      }
      if (typeof amt !== "number" || amt <= 0 || isNaN(amt)) {
        helpers.log(ctx, () => `Invalid donation amount: '${amt}'.`);
        return false;
      }
      if (Player.money < amt) {
        helpers.log(ctx, () => `You do not have enough money to donate ${formatMoney(amt)} to '${facName}'`);
        return false;
      }
      const repNeededToDonate = Math.floor(CONSTANTS.BaseFavorToDonate * BitNodeMultipliers.RepToDonateToFaction);
      if (faction.favor < repNeededToDonate) {
        helpers.log(
          ctx,
          () =>
            `You do not have enough favor to donate to this faction. Have ${faction.favor}, need ${repNeededToDonate}`,
        );
        return false;
      }
      const repGain = (amt / CONSTANTS.DonateMoneyToRepDivisor) * Player.mults.faction_rep;
      faction.playerReputation += repGain;
      Player.loseMoney(amt, "other");
      helpers.log(ctx, () => `${formatMoney(amt)} donated to '${facName}' for ${formatReputation(repGain)} reputation`);
      return true;
    },
    createProgram:
      (ctx) =>
      (_programName, _focus = true) => {
        helpers.checkSingularityAccess(ctx);
        const programName = helpers.string(ctx, "programName", _programName).toLowerCase();
        const focus = !!_focus;

        const wasFocusing = Player.focus;

        const p = Object.values(Programs).find((p) => p.name.toLowerCase() === programName);

        if (p == null) {
          helpers.log(ctx, () => `The specified program does not exist: '${programName}`);
          return false;
        }

        if (Player.hasProgram(p.name)) {
          helpers.log(ctx, () => `You already have the '${p.name}' program`);
          return false;
        }

        const create = p.create;
        if (create === null) {
          helpers.log(ctx, () => `You cannot create the '${p.name}' program`);
          return false;
        }

        if (!create.req()) {
          helpers.log(ctx, () => `Hacking level is too low to create '${p.name}' (level ${create.level} req)`);
          return false;
        }

        Player.startWork(
          new CreateProgramWork({
            programName: p.name,
            singularity: true,
          }),
        );
        if (focus) {
          Player.startFocusing();
          Router.toPage(Page.Work);
        } else if (wasFocusing) {
          Player.stopFocusing();
          Router.toPage(Page.Terminal);
        }
        helpers.log(ctx, () => `Began creating program: '${programName}'`);
        return true;
      },
    commitCrime: (ctx) => (_crimeType, _focus) => {
      helpers.checkSingularityAccess(ctx);
      const crimeType = helpers.string(ctx, "crimeType", _crimeType);
      const focus = _focus === undefined ? true : !!_focus;
      const wasFocusing = Player.focus;

      if (Player.currentWork !== null) Player.finishWork(true);
      Player.gotoLocation(LocationName.Slums);

      // If input isn't a crimeType, use search using roughname.
      const crime = findCrime(crimeType);
      if (crime == null) throw helpers.makeRuntimeErrorMsg(ctx, `Invalid crime: '${crimeType}'`);

      helpers.log(ctx, () => `Attempting to commit ${crime.type}...`);
      const crimeTime = crime.commit(1, ctx.workerScript);
      if (focus) {
        Player.startFocusing();
        Router.toPage(Page.Work);
      } else if (wasFocusing) {
        Player.stopFocusing();
        Router.toPage(Page.Terminal);
      }
      return crimeTime;
    },
    getCrimeChance: (ctx) => (_crimeType) => {
      helpers.checkSingularityAccess(ctx);
      const crimeType = helpers.string(ctx, "crimeType", _crimeType);

      // If input isn't a crimeType, use search using roughname.
      const crime = findCrime(crimeType);
      if (crime == null) throw helpers.makeRuntimeErrorMsg(ctx, `Invalid crime: '${crimeType}'`);

      return crime.successRate(Player);
    },
    getCrimeStats: (ctx) => (_crimeType) => {
      helpers.checkSingularityAccess(ctx);
      const crimeType = helpers.string(ctx, "crimeType", _crimeType);

      // If input isn't a crimeType, use search using roughname.
      const crime = findCrime(crimeType);
      if (crime == null) throw helpers.makeRuntimeErrorMsg(ctx, `Invalid crime: '${crimeType}'`);

      const crimeStatsWithMultipliers = calculateCrimeWorkStats(Player, crime);

      return Object.assign({}, crime, {
        money: crimeStatsWithMultipliers.money,
        reputation: crimeStatsWithMultipliers.reputation,
        hacking_exp: crimeStatsWithMultipliers.hackExp,
        strength_exp: crimeStatsWithMultipliers.strExp,
        defense_exp: crimeStatsWithMultipliers.defExp,
        dexterity_exp: crimeStatsWithMultipliers.dexExp,
        agility_exp: crimeStatsWithMultipliers.agiExp,
        charisma_exp: crimeStatsWithMultipliers.chaExp,
        intelligence_exp: crimeStatsWithMultipliers.intExp,
      });
    },
    getDarkwebPrograms: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);

      // If we don't have Tor, log it and return [] (empty list)
      if (!Player.hasTorRouter()) {
        helpers.log(ctx, () => "You do not have the TOR router.");
        return [];
      }
      return Object.values(DarkWebItems).map((p) => p.program);
    },
    getDarkwebProgramCost: (ctx) => (_programName) => {
      helpers.checkSingularityAccess(ctx);
      const programName = helpers.string(ctx, "programName", _programName).toLowerCase();

      // If we don't have Tor, log it and return -1
      if (!Player.hasTorRouter()) {
        helpers.log(ctx, () => "You do not have the TOR router.");
        // returning -1 rather than throwing an error to be consistent with purchaseProgram
        // which returns false if tor has
        return -1;
      }

      const item = Object.values(DarkWebItems).find((i) => i.program.toLowerCase() === programName);

      // If the program doesn't exist, throw an error. The reasoning here is that the 99% case is that
      // the player will be using this in automation scripts, and if they're asking for a program that
      // doesn't exist, it's the first time they've run the script. So throw an error to let them know
      // that they need to fix it.
      if (item == null) {
        throw helpers.makeRuntimeErrorMsg(
          ctx,
          `No such exploit ('${programName}') found on the darkweb! ` +
            `\nThis function is not case-sensitive. Did you perhaps forget .exe at the end?`,
        );
      }

      if (Player.hasProgram(item.program)) {
        helpers.log(ctx, () => `You already have the '${item.program}' program`);
        return 0;
      }
      return item.price;
    },
    b1tflum3:
      (ctx) =>
      (_nextBN, _callbackScript = "") => {
        helpers.checkSingularityAccess(ctx);
        const nextBN = helpers.number(ctx, "nextBN", _nextBN);
        const callbackScript = helpers.string(ctx, "callbackScript", _callbackScript);
        helpers.checkSingularityAccess(ctx);
        enterBitNode(true, Player.bitNodeN, nextBN);
        if (callbackScript)
          setTimeout(() => {
            runAfterReset(callbackScript);
          }, 0);
      },
    destroyW0r1dD43m0n:
      (ctx) =>
      (_nextBN, _callbackScript = "") => {
        helpers.checkSingularityAccess(ctx);
        const nextBN = helpers.number(ctx, "nextBN", _nextBN);
        if (nextBN > 13 || nextBN < 1 || !Number.isInteger(nextBN)) {
          throw new Error(`Invalid bitnode specified: ${_nextBN}`);
        }
        const callbackScript = helpers.string(ctx, "callbackScript", _callbackScript);

        const wd = GetServer(SpecialServers.WorldDaemon);
        if (!(wd instanceof Server)) throw new Error("WorldDaemon was not a normal server. This is a bug contact dev.");
        const hackingRequirements = () => {
          if (Player.skills.hacking < wd.requiredHackingSkill) return false;
          if (!wd.hasAdminRights) return false;
          return true;
        };
        const bladeburnerRequirements = () => {
          if (!Player.bladeburner) return false;
          return Player.bladeburner.blackops[BlackOperationNames.OperationDaedalus];
        };

        if (!hackingRequirements() && !bladeburnerRequirements()) {
          helpers.log(ctx, () => "Requirements not met to destroy the world daemon");
          return;
        }

        wd.backdoorInstalled = true;
        calculateAchievements();
        enterBitNode(false, Player.bitNodeN, nextBN);
        if (callbackScript)
          setTimeout(() => {
            runAfterReset(callbackScript);
          }, 0);
      },
    getCurrentWork: () => () => {
      if (!Player.currentWork) return null;
      return Player.currentWork.APICopy();
    },
    exportGame: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      onExport();
      return saveObject.exportGame();
    },
    exportGameBonus: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      return canGetBonus();
    },
    getLastAugReset: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      return Player.lastAugReset;
    },
    getLastNodeReset: (ctx) => () => {
      helpers.checkSingularityAccess(ctx);
      return Player.lastNodeReset;
    },
  };
  Object.assign(singularityAPI, {
    getAugmentationCost: removedFunction(
      "v2.2.0",
      "singularity.getAugmentationPrice and singularity.getAugmentationRepReq",
    ),
  });
  return singularityAPI;
}