import React from 'react';
import { Modifications, Modules, Ships } from 'coriolis-data/dist';
import Module from '../shipyard/Module';
import Ship from '../shipyard/Ship';
import * as ModuleUtils from '../shipyard/ModuleUtils';


// mapping from fd's ship model names to coriolis'
const SHIP_FD_NAME_TO_CORIOLIS_NAME = {
  'Adder': 'adder',
  'Anaconda': 'anaconda',
  'Asp': 'asp',
  'Asp_Scout': 'asp_scout',
  'BelugaLiner': 'beluga',
  'CobraMkIII': 'cobra_mk_iii',
  'CobraMkIV': 'cobra_mk_iv',
  'Cutter': 'imperial_cutter',
  'DiamondBack': 'diamondback_explorer',
  'DiamondBackXL': 'diamondback',
  'Eagle': 'eagle',
  'Empire_Courier': 'imperial_courier',
  'Empire_Eagle': 'imperial_eagle',
  'Empire_Trader': 'imperial_clipper',
  'Federation_Corvette': 'federal_corvette',
  'Federation_Dropship': 'federal_dropship',
  'Federation_Dropship_MkII': 'federal_assault_ship',
  'Federation_Gunship': 'federal_gunship',
  'FerDeLance': 'fer_de_lance',
  'Hauler': 'hauler',
  'Independant_Trader': 'keelback',
  'Orca': 'orca',
  'Python': 'python',
  'SideWinder': 'sidewinder',
  'Type6': 'type_6_transporter',
  'Type7': 'type_7_transport',
  'Type9': 'type_9_heavy',
  'Viper': 'viper',
  'Viper_MKIV': 'viper_mk_iv',
  'Vulture': 'vulture'
};

// Mapping from hardpoint class to name in companion API
const HARDPOINT_NUM_TO_CLASS = {
  0: 'Tiny',
  1: 'Small',
  2: 'Medium',
  3: 'Large',
  4: 'Huge'
};


/**
 * Obtain a module given its ED ID
 * @param {Integer} edId the Elite ID of the module
 * @return {Module} the module
 */
function _moduleFromEdId(edId) {
  if (!edId) return null;

  // Check standard modules
  for (const grp in Modules.standard) {
    if (Modules.standard.hasOwnProperty(grp)) {
      for (const i in Modules.standard[grp]) {
        if (Modules.standard[grp][i].edID === edId) {
          // Found it
          return new Module({ template: Modules.standard[grp][i] });
        }
      }
    }
  }

  // Check hardpoint modules
  for (const grp in Modules.hardpoints) {
    if (Modules.hardpoints.hasOwnProperty(grp)) {
      for (const i in Modules.hardpoints[grp]) {
        if (Modules.hardpoints[grp][i].edID === edId) {
          // Found it
          return new Module({ template: Modules.hardpoints[grp][i] });
        }
      }
    }
  }

  // Check internal modules
  for (const grp in Modules.internal) {
    if (Modules.internal.hasOwnProperty(grp)) {
      for (const i in Modules.internal[grp]) {
        if (Modules.internal[grp][i].edID === edId) {
          // Found it
          return new Module({ template: Modules.internal[grp][i] });
        }
      }
    }
  }

  // Not found
  return null;
}

/**
 * Obtain the model of a ship given its ED name
 * @param {string} edName the Elite name of the ship
 * @return {string} the Coriolis model of the ship
 */
function _shipModelFromEDName(edName) {
  return SHIP_FD_NAME_TO_CORIOLIS_NAME[edName];
}

/**
 * Obtain a ship's model from the companion API JSON
 * @param {object} json the companion API JSON
 * @return {string} the Coriolis model of the ship
 */
export function shipModelFromJson(json) {
  return _shipModelFromEDName(json.name);
}

/**
 * Build a ship from the companion API JSON
 * @param {object} json the companion API JSON
 * @return {Ship} the built ship
 */
export function shipFromJson(json) {
  // Start off building a basic ship
  const shipModel = shipModelFromJson(json);
  if (!shipModel) {
    throw 'No such ship found: "' + json.name + '"';
  }
  const shipTemplate = Ships[shipModel];

  let ship = new Ship(shipModel, shipTemplate.properties, shipTemplate.slots);
  ship.buildWith(null);

  // Set the cargo hatch.  We don't have any information on it so guess it's priority 5 and disabled
  ship.cargoHatch.enabled = false;
  ship.cargoHatch.priority = 4;
  
  // Add the bulkheads
  const armourJson = json.modules.Armour.module;
  if (armourJson.name.endsWith('_Armour_Grade1')) {
    ship.useBulkhead(0, true);
  } else if (armourJson.name.endsWith('_Armour_Grade2')) {
    ship.useBulkhead(1, true);
  } else if (armourJson.name.endsWith('_Armour_Grade3')) {
    ship.useBulkhead(2, true);
  } else if (armourJson.name.endsWith('_Armour_Mirrored')) {
    ship.useBulkhead(3, true);
  } else if (armourJson.name.endsWith('_Armour_Reactive')) {
    ship.useBulkhead(4, true);
  } else {
    throw 'Unknown bulkheads "' + armourJson.name + '"';
  }
  ship.bulkheads.enabled = true;
  if (armourJson.modifiers) _addModifications(ship.bulkheads.m, armourJson.modifiers);

  // Add the standard modules
  // Power plant
  const powerplantJson = json.modules.PowerPlant.module;
  const powerplant = _moduleFromEdId(powerplantJson.id);
  if (powerplantJson.modifiers) _addModifications(powerplant, powerplantJson.modifiers);
  ship.use(ship.standard[0], powerplant, true);
  ship.standard[0].enabled = powerplantJson.on === true;
  ship.standard[0].priority = powerplantJson.priority;

  // Thrusters
  const thrustersJson = json.modules.MainEngines.module;
  const thrusters = _moduleFromEdId(thrustersJson.id);
  if (thrustersJson.modifiers) _addModifications(thrusters, thrustersJson.modifiers);
  ship.use(ship.standard[1], thrusters, true);
  ship.standard[1].enabled = thrustersJson.on === true;
  ship.standard[1].priority = thrustersJson.priority;

  // FSD
  const frameshiftdriveJson = json.modules.FrameShiftDrive.module;
  const frameshiftdrive = _moduleFromEdId(frameshiftdriveJson.id);
  if (frameshiftdriveJson.modifiers) _addModifications(frameshiftdrive, frameshiftdriveJson.modifiers);
  ship.use(ship.standard[2], frameshiftdrive, true);
  ship.standard[2].enabled = frameshiftdriveJson.on === true;
  ship.standard[2].priority = frameshiftdriveJson.priority;

  // Life support
  const lifesupportJson = json.modules.LifeSupport.module;
  const lifesupport = _moduleFromEdId(lifesupportJson.id);
  if (lifesupportJson.modifiers)_addModifications(lifesupport, lifesupportJson.modifiers);
  ship.use(ship.standard[3], lifesupport, true);
  ship.standard[3].enabled = lifesupportJson.on === true;
  ship.standard[3].priority = lifesupportJson.priority;

  // Power distributor
  const powerdistributorJson = json.modules.PowerDistributor.module;
  const powerdistributor = _moduleFromEdId(powerdistributorJson.id);
  if (powerdistributorJson.modifiers) _addModifications(powerdistributor, powerdistributorJson.modifiers);
  ship.use(ship.standard[4], powerdistributor, true);
  ship.standard[4].enabled = powerdistributorJson.on === true;
  ship.standard[4].priority = powerdistributorJson.priority;

  // Sensors
  const sensorsJson = json.modules.Radar.module;
  const sensors = _moduleFromEdId(sensorsJson.id);
  if (sensorsJson.modifiers) _addModifications(sensors, sensorsJson.modifiers);
  ship.use(ship.standard[5], sensors, true);
  ship.standard[5].enabled = sensorsJson.on === true;
  ship.standard[5].priority = sensorsJson.priority;

  // Fuel tank
  const fueltankJson = json.modules.FuelTank.module;
  const fueltank = _moduleFromEdId(fueltankJson.id);
  ship.use(ship.standard[6], fueltank, true);
  ship.standard[6].enabled = true;
  ship.standard[6].priority = 0;

  // Add hardpoints
  let hardpointClassNum = -1;
  let hardpointSlotNum = -1;
  let hardpointArrayNum = 0;
  for (let i in shipTemplate.slots.hardpoints) {
    if (shipTemplate.slots.hardpoints[i] === hardpointClassNum) {
      // Another slot of the same class
      hardpointSlotNum++;
    } else {
      // The first slot of a new class
      hardpointClassNum = shipTemplate.slots.hardpoints[i];
      hardpointSlotNum = 1;
    }

    // Now that we know what we're looking for, find it
    const hardpointName = HARDPOINT_NUM_TO_CLASS[hardpointClassNum] + 'Hardpoint' + hardpointSlotNum;
    const hardpointSlot = json.modules[hardpointName];
    if (!hardpointSlot.module) {
      // No module
    } else {
      const hardpointJson = hardpointSlot.module;
      const hardpoint = _moduleFromEdId(hardpointJson.id);
      if (hardpointJson.modifiers) _addModifications(hardpoint, hardpointJson.modifiers);
      ship.use(ship.hardpoints[hardpointArrayNum], hardpoint, true);
      ship.hardpoints[hardpointArrayNum].enabled = hardpointJson.on === true;
      ship.hardpoints[hardpointArrayNum].priority = hardpointJson.priority;
    }
    hardpointArrayNum++;
  }

  // Add internal compartments
  let internalClassNum = -1;
  let internalSlotNum = 1;
  for (let i in shipTemplate.slots.internal) {
    const internalClassNum = shipTemplate.slots.internal[i];

    let internalSlot = null;
    while (internalSlot === null && internalSlotNum < 99) {
      // Slot numbers are not contiguous so handle skips
      const internalName = 'Slot' + (internalSlotNum <= 9 ? '0' : '') + internalSlotNum + '_Size' + internalClassNum;
      if (json.modules[internalName]) {
        internalSlot = json.modules[internalName];
      }
      internalSlotNum++;
    }
    if (!internalSlot.module) {
      // No module
    } else {
      const internalJson = internalSlot.module;
      const internal = _moduleFromEdId(internalJson.id);
      if (internalJson.modifiers) _addModifications(internal, internalJson.modifiers);
      ship.use(ship.internal[i], internal, true);
      ship.internal[i].enabled = internalJson.on === true;
      ship.internal[i].priority = internalJson.priority;
    }
  }

  // Now update the ship's codes before returning it
  return ship.updatePowerPrioritesString().updatePowerEnabledString().updateModificationsString();
}

/**
 * Add the modifications for a module
 * @param {Module} module the module
 * @param {Object} modifiers the modifiers
 */
function _addModifications(module, modifiers) {
  if (!modifiers || !modifiers.modifiers) return;
  
  for (const i in modifiers.modifiers) {
    // Look up the modifiers to find what we need to do
    const modifierActions = Modifications.modifierActions[modifiers.modifiers[i].name];
    const value = modifiers.modifiers[i].value;

    // Carry out the required changes
    for (const action in modifierActions) {
      const actionValue = modifierActions[action] * value;
      let mod = module.getModValue(action) / 10000;
      if (!mod) {
        mod = 0;
      }
      module.setModValue(action, ((1 + mod) * (1 + actionValue) - 1) * 10000);
    }
  }

  // Need to fix up a few items

  // Shield boosters are treated internally as straight modifiers, so rather than (for example)
  // being a 4% boost they are a 104% multiplier.  Unfortunately this means that our % modification
  // is incorrect so we fix it
  if (module.grp === 'sb' && module.getModValue('shieldboost')) {
    const alteredBoost = (1 + module.shieldboost) * (module.getModValue('shieldboost') / 10000);
    module.setModValue('shieldboost', alteredBoost * 10000 / module.shieldboost);
  }

  // Shield booster resistance is actually a damage modifier, so needs to be inverted.
  if (module.grp === 'sb') {
    if (module.getModValue('explres')) {
      module.setModValue('explres', ((module.getModValue('explres') / 10000) * -1) * 10000);
    }
    if (module.getModValue('kinres')) {
      module.setModValue('kinres', ((module.getModValue('kinres') / 10000) * -1) * 10000);
    }
    if (module.getModValue('thermres')) {
      module.setModValue('thermres', ((module.getModValue('thermres') / 10000) * -1) * 10000);
    }
  }
  
  // Shield generator resistance is actually a damage modifier, so needs to be inverted.
  // In addition, the modification is based off the inherent resistance of the module
  if (module.isShieldGenerator()) {
    if (module.getModValue('explres')) {
      module.setModValue('explres', ((1 - (1 - module.explres) * (1 + module.getModValue('explres') / 10000)) - module.explres) * 10000);
    }
    if (module.getModValue('kinres')) {
      module.setModValue('kinres', ((1 - (1 - module.kinres) * (1 + module.getModValue('kinres') / 10000)) - module.kinres) * 10000);
    }
    if (module.getModValue('thermres')) {
      module.setModValue('thermres', ((1 - (1 - module.thermres) * (1 + module.getModValue('thermres') / 10000)) - module.thermres) * 10000);
    }
  }

  // Hull reinforcement package resistance is actually a damage modifier, so needs to be inverted.
  if (module.grp === 'hr') {
    if (module.getModValue('explres')) {
      module.setModValue('explres', ((module.getModValue('explres') / 10000) * -1) * 10000);
    }
    if (module.getModValue('kinres')) {
      module.setModValue('kinres', ((module.getModValue('kinres') / 10000) * -1) * 10000);
    }
    if (module.getModValue('thermres')) {
      module.setModValue('thermres', ((module.getModValue('thermres') / 10000) * -1) * 10000);
    }
  }
  
  // Bulkhead resistance is actually a damage modifier, so needs to be inverted.
  // In addition, the modification is based off the inherent resistance of the module
  if (module.grp == 'bh') {
    if (module.getModValue('explres')) {
      module.setModValue('explres', ((1 - (1 - module.explres) * (1 + module.getModValue('explres') / 10000)) - module.explres) * 10000);
    }
    if (module.getModValue('kinres')) {
      module.setModValue('kinres', ((1 - (1 - module.kinres) * (1 + module.getModValue('kinres') / 10000)) - module.kinres) * 10000);
    }
    if (module.getModValue('thermres')) {
      module.setModValue('thermres', ((1 - (1 - module.thermres) * (1 + module.getModValue('thermres') / 10000)) - module.thermres) * 10000);
    }
  }


  // Jitter is in degrees not % so need to divide it by 100 to obtain the correct number
  if (module.getModValue('jitter')) {
    module.setModValue('jitter', module.getModValue('jitter') / 100);
  }

  // FD uses interval between bursts internally, so we need to translate this to a real rate of fire
  if (module.getModValue('rof')) {
    module.setModValue('rof', ((1 / (1 + module.getModValue('rof') / 10000)) - 1) * 10000);
  }
}