import { DataSource } from 'typeorm';
import { DEMO_CHARACTER_ID } from '../../demo/demo-character.constants';
import { Character } from '../../characters/entities/character.entity';
import { EncounterType } from '../../monsters/entities/encounter-type.enum';
import { LocationMonster } from '../../monsters/entities/location-monster.entity';
import { MonsterDefinition } from '../../monsters/entities/monster-definition.entity';
import { LocationConnection } from '../../world/entities/location-connection.entity';
import { LocationDefinition } from '../../world/entities/location-definition.entity';
import {
  BURNED_ROAD_LOCAL_CONTENT,
  SOUTH_GATE_LOCAL_CONTENT,
} from './local-location.content';
import {
  ASH_RAT_MONSTER_ID,
  BURNED_ROAD_ID,
  CHARRED_LOOTER_MONSTER_ID,
  ROAD_BANDIT_MONSTER_ID,
  SOUTH_GATE_ID,
  WILD_ROAD_DOG_MONSTER_ID,
} from './vertical-slice.constants';

export async function seedVisibleVerticalSlice(
  dataSource: DataSource,
): Promise<void> {
  const locationRepository = dataSource.getRepository(LocationDefinition);
  const connectionRepository = dataSource.getRepository(LocationConnection);
  const characterRepository = dataSource.getRepository(Character);
  const monsterRepository = dataSource.getRepository(MonsterDefinition);
  const locationMonsterRepository = dataSource.getRepository(LocationMonster);

  const locations = [
    {
      id: SOUTH_GATE_ID,
      key: 'south-gate',
      name: 'Südtor von Graufurt',
      description:
        'Am schwarzen Südtor endet der Schutz Graufurts. Hinter den Wachtfeuern beginnt die stille Weite der Aschenfelder.',
      regionKey: 'ashen-fields',
      minRecommendedLevel: 1,
      maxRecommendedLevel: 1,
      dangerLevel: 0,
      isSafe: true,
      huntingEnabled: false,
      artworkPath: '/images/backgrounds/Suedtor.png',
      ...SOUTH_GATE_LOCAL_CONTENT,
    },
    {
      id: BURNED_ROAD_ID,
      key: 'burned-road',
      name: 'Verbrannte Straße',
      description:
        'Die alte Handelsstraße führt durch verkohlte Felder. Zwischen Asche und zerbrochenen Wagen warten die ersten Gefahren.',
      regionKey: 'ashen-fields',
      minRecommendedLevel: 1,
      maxRecommendedLevel: 2,
      dangerLevel: 1,
      isSafe: false,
      huntingEnabled: true,
      artworkPath: '/images/backgrounds/Aschestrasse.png',
      ...BURNED_ROAD_LOCAL_CONTENT,
    },
  ];

  const locationIds = new Map<string, string>();
  for (const location of locations) {
    const existing = await locationRepository.findOneBy({ key: location.key });
    const { id, key, ...definition } = location;

    if (existing) {
      await locationRepository.update(existing.id, definition);
    } else {
      await locationRepository.insert(location);
    }

    locationIds.set(key, existing?.id ?? id);
  }

  const southGateId = locationIds.get('south-gate') ?? SOUTH_GATE_ID;
  const burnedRoadId = locationIds.get('burned-road') ?? BURNED_ROAD_ID;

  await connectionRepository.upsert(
    [
      {
        fromLocationId: southGateId,
        toLocationId: burnedRoadId,
        travelDurationSeconds: 10,
        ambushChance: '0.0500',
        enabled: true,
      },
      {
        fromLocationId: burnedRoadId,
        toLocationId: southGateId,
        travelDurationSeconds: 10,
        ambushChance: '0.0500',
        enabled: true,
      },
    ],
    ['fromLocationId', 'toLocationId'],
  );

  const monsters = [
    {
      id: ASH_RAT_MONSTER_ID,
      key: 'ash-rat',
      name: 'Aschenratte',
      level: 1,
      maxHp: 45,
      attack: 5,
      armor: 0,
      experienceReward: 8,
      silverMin: 4,
      silverMax: 7,
      artworkPath: '/images/monsters/ash-rat.png',
      iconPath: '/images/monsters/icons/ash-rat-128.png',
    },
    {
      id: WILD_ROAD_DOG_MONSTER_ID,
      key: 'wild-road-dog',
      name: 'Verwilderter Straßenhund',
      level: 1,
      maxHp: 55,
      attack: 7,
      armor: 0,
      experienceReward: 11,
      silverMin: 5,
      silverMax: 9,
      artworkPath: '/images/monsters/wild-road-dog.png',
      iconPath: '/images/monsters/icons/wild-road-dog-128.png',
    },
    {
      id: ROAD_BANDIT_MONSTER_ID,
      key: 'road-bandit',
      name: 'Straßenräuber',
      level: 2,
      maxHp: 75,
      attack: 9,
      armor: 5,
      experienceReward: 16,
      silverMin: 9,
      silverMax: 15,
      artworkPath: '/images/monsters/road-bandit.png',
      iconPath: '/images/monsters/icons/road-bandit-128.png',
    },
    {
      id: CHARRED_LOOTER_MONSTER_ID,
      key: 'charred-looter',
      name: 'Verkohlter Plünderer',
      level: 2,
      maxHp: 85,
      attack: 11,
      armor: 6,
      experienceReward: 20,
      silverMin: 12,
      silverMax: 19,
      artworkPath: '/images/monsters/charred-looter.png',
      iconPath: '/images/monsters/icons/charred-looter-128.png',
    },
  ];

  const monsterIds = new Map<string, string>();
  for (const monster of monsters) {
    const existingMonster = await monsterRepository.findOneBy({
      key: monster.key,
    });
    const { id, key, ...definition } = monster;

    if (existingMonster) {
      await monsterRepository.update(existingMonster.id, definition);
    } else {
      await monsterRepository.insert(monster);
    }

    monsterIds.set(key, existingMonster?.id ?? id);
  }

  // Weights read as "how often you meet this on the road". They also drive the
  // location's danger rating, which is computed from the weighted average of
  // the pool rather than from its single worst entry.
  const encounterWeights: Readonly<Record<string, number>> = {
    'ash-rat': 40,
    'wild-road-dog': 30,
    'road-bandit': 20,
    'charred-looter': 10,
  };

  await locationMonsterRepository.upsert(
    Object.entries(encounterWeights).map(([key, weight]) => ({
      locationId: burnedRoadId,
      monsterId: monsterIds.get(key) as string,
      weight,
      encounterType: EncounterType.NORMAL,
      enabled: true,
    })),
    ['locationId', 'monsterId'],
  );

  const existing = await characterRepository.findOneBy({
    id: DEMO_CHARACTER_ID,
  });

  if (!existing) {
    await characterRepository.insert({
      id: DEMO_CHARACTER_ID,
      name: 'Aric Duskwalker',
      level: 1,
      experience: 0,
      baseHp: 100,
      baseAttack: 6,
      currentHp: 100,
      currentLocationId: southGateId,
    });
  }
}