import { EquipmentSlot } from '../../items/equipment-slot.enum';
import { ItemRarity } from '../../items/item-rarity.enum';
import { ItemType } from '../../items/item-type.enum';
import {
  ASH_RAT_LOOT_TABLE_ID,
  ITEM_IDS,
  ItemKey,
  ROAD_BANDIT_LOOT_TABLE_ID,
} from './item.constants';

export interface SeedItemDefinition {
  id: string;
  key: ItemKey;
  name: string;
  description: string;
  type: ItemType;
  equipmentSlot: EquipmentSlot | null;
  rarity: ItemRarity;
  tier: number;
  weaponDamage: number;
  bonusHp: number;
  bonusAttack: number;
  bonusArmor: number;
  sellPrice: number;
  iconPath: string;
}

function item(
  key: ItemKey,
  name: string,
  description: string,
  type: ItemType,
  equipmentSlot: EquipmentSlot | null,
  rarity: ItemRarity,
  stats: Partial<
    Pick<
      SeedItemDefinition,
      'weaponDamage' | 'bonusHp' | 'bonusAttack' | 'bonusArmor'
    >
  > = {},
): SeedItemDefinition {
  return {
    id: ITEM_IDS[key],
    key,
    name,
    description,
    type,
    equipmentSlot,
    rarity,
    tier: 1,
    weaponDamage: stats.weaponDamage ?? 0,
    bonusHp: stats.bonusHp ?? 0,
    bonusAttack: stats.bonusAttack ?? 0,
    bonusArmor: stats.bonusArmor ?? 0,
    // Always 0: no merchants exist in Slice 0.4, and the balancing doc's
    // Grenzmarken table lists purchase prices, not sell prices.
    sellPrice: 0,
    iconPath: `/images/items/${key}.png`,
  };
}

// Stats from docs/Ashen_Realms_Balancing_Items_Loot_Design_V1.md §19.
export const ITEM_DEFINITIONS: SeedItemDefinition[] = [
  item(
    'worn-short-sword',
    'Worn Shortsword',
    "A recruit's blade, sharpened more often than it's been swung.",
    ItemType.EQUIPMENT,
    EquipmentSlot.WEAPON,
    ItemRarity.COMMON,
    { weaponDamage: 8 },
  ),
  item(
    'bandit-blade',
    'Bandit Blade',
    'A roughly serrated blade, forged for quick raids.',
    ItemType.EQUIPMENT,
    EquipmentSlot.WEAPON,
    ItemRarity.COMMON,
    { weaponDamage: 11, bonusAttack: 1 },
  ),
  item(
    'ash-blade',
    'Ashen Blade',
    'Tempered in the embers of the Ashen Fields; the edge still glows faintly.',
    ItemType.EQUIPMENT,
    EquipmentSlot.WEAPON,
    ItemRarity.RARE,
    { weaponDamage: 15, bonusAttack: 2 },
  ),
  item(
    'bandit-hood',
    'Bandit Hood',
    "Scarred leather that hides both the wearer's face and their intent.",
    ItemType.EQUIPMENT,
    EquipmentSlot.HEAD,
    ItemRarity.COMMON,
    { bonusArmor: 3, bonusHp: 5 },
  ),
  item(
    'reinforced-leather-jacket',
    'Reinforced Leather Jacket',
    'Leather sewn with iron plates, heavy and dependable.',
    ItemType.EQUIPMENT,
    EquipmentSlot.CHEST,
    ItemRarity.RARE,
    { bonusArmor: 7, bonusHp: 10 },
  ),
  item(
    'raider-gloves',
    'Plunderer Gloves',
    "Studded gloves, worn smooth from handling other people's belongings.",
    ItemType.EQUIPMENT,
    EquipmentSlot.HANDS,
    ItemRarity.COMMON,
    { bonusArmor: 3, bonusAttack: 1 },
  ),
  item(
    'guardsman-legs',
    "Watchman's Leggings",
    'Leg armor of the Border Watch, patched at the knees.',
    ItemType.EQUIPMENT,
    EquipmentSlot.LEGS,
    ItemRarity.RARE,
    { bonusArmor: 5, bonusHp: 5 },
  ),
  item(
    'ash-boots',
    'Ashen Boots',
    'Boots that walked through smoldering fields and never quite left them behind.',
    ItemType.EQUIPMENT,
    EquipmentSlot.FEET,
    ItemRarity.RARE,
    { bonusArmor: 4, bonusHp: 5 },
  ),
  item(
    'borderwatch-sigil',
    'Mark of the Border Watch',
    'The crest of a watchtower that no longer stands.',
    ItemType.EQUIPMENT,
    EquipmentSlot.AMULET,
    ItemRarity.RARE,
    { bonusAttack: 3, bonusHp: 10 },
  ),
  item(
    'burned-captain-pendant',
    "Charred Captain's Pendant",
    'A skull cast in slag, its embers never quite gone out.',
    ItemType.EQUIPMENT,
    EquipmentSlot.AMULET,
    ItemRarity.EPIC,
    { bonusAttack: 3, bonusHp: 15, bonusArmor: 2 },
  ),
  // Seeded as content only. Slice 0.4 implements no consumable use, and the
  // Road Bandit loot entry for it is deliberately deferred (spec §16).
  item(
    'small-healing-potion',
    'Small Healing Potion',
    'A bitter draught that makes wounds forgettable, if only for a breath.',
    ItemType.CONSUMABLE,
    null,
    ItemRarity.COMMON,
  ),
  // A Trade Good (spec §17): turned in to the Border Watch for Silver and
  // reputation rather than crafted with.
  item(
    'ash-pelt',
    'Ash Pelt',
    'Singed pelt, tough as leather and grey with drifting ash.',
    ItemType.TRADE_GOOD,
    null,
    ItemRarity.COMMON,
  ),
  item(
    'bandit-insignia',
    'Bandit Insignia',
    'A roughly stamped token marking a road bandit as one of their band.',
    ItemType.TROPHY,
    null,
    ItemRarity.COMMON,
  ),
];

export const LOOT_TABLES = [
  { id: ASH_RAT_LOOT_TABLE_ID, key: 'ash-rat-loot', name: 'Ash Rat Loot' },
  {
    id: ROAD_BANDIT_LOOT_TABLE_ID,
    key: 'road-bandit-loot',
    name: 'Road Bandit Loot',
  },
];

export interface SeedLootTableEntry {
  lootTableId: string;
  itemDefinitionId: string;
  position: number;
  dropChance: string;
  minQuantity: number;
  maxQuantity: number;
  enabled: boolean;
}

function entry(
  lootTableId: string,
  key: ItemKey,
  position: number,
  dropChance: string,
): SeedLootTableEntry {
  return {
    lootTableId,
    itemDefinitionId: ITEM_IDS[key],
    position,
    dropChance,
    minQuantity: 1,
    maxQuantity: 1,
    enabled: true,
  };
}

/**
 * Drop chances from docs/Ashen_Realms_Balancing_Items_Loot_Design_V1.md §27–28.
 * Every entry is an independent roll (spec §17), rolled in `position` order.
 *
 * DEFERRED: the Straßenräuber table also lists 10 % Kleiner Heiltrank. It is
 * omitted here because Slice 0.4 implements no consumables (spec §16).
 */
export const LOOT_TABLE_ENTRIES: SeedLootTableEntry[] = [
  entry(ASH_RAT_LOOT_TABLE_ID, 'ash-pelt', 1, '0.6000'),
  entry(ASH_RAT_LOOT_TABLE_ID, 'worn-short-sword', 2, '0.0800'),
  entry(ROAD_BANDIT_LOOT_TABLE_ID, 'bandit-blade', 1, '0.1800'),
  entry(ROAD_BANDIT_LOOT_TABLE_ID, 'bandit-hood', 2, '0.1200'),
  entry(ROAD_BANDIT_LOOT_TABLE_ID, 'raider-gloves', 3, '0.0800'),
  entry(ROAD_BANDIT_LOOT_TABLE_ID, 'bandit-insignia', 4, '0.4000'),
];