import typedHypixelApi from 'typed-hypixel-api'
import { fetchItemList } from '../../hypixel.js'
import { levelFromXpTable } from '../../util.js'
import { fetchPets } from '../../constants.js'
import { ItemListItem } from './itemList.js'

// https://hypixel-skyblock.fandom.com/wiki/Module:Pet/LevelingData?action=edit

const PET_LEVELS = [
	100, 110, 120, 130, 145, 160, 175, 190, 210, 230, 250, 275, 300, 330, 360, 400, 440, 490, 540, 600, 660, 730, 800, 880, 960, 1050, 1150, 1260, 1380, 1510, 1650, 1800, 1960, 2130, 2310, 2500, 2700, 2920, 3160, 3420, 3700, 4000, 4350, 4750, 5200, 5700, 6300, 7000, 7800, 8700, 9700, 10800, 12000, 13300, 14700, 16200, 17800, 19500, 21300, 23200, 25200, 27400, 29800, 32400, 35200, 38200, 41400, 44800, 48400, 52200, 56200, 60400, 64800, 69400, 74200, 79200, 84700, 90700, 97200, 104200, 111700, 119700, 128200, 137200, 146700, 156700, 167700, 179700, 192700, 206700, 221700, 237700, 254700, 272700, 291700, 311700, 333700, 357700, 383700, 411700, 441700, 476700, 516700, 561700, 611700, 666700, 726700, 791700, 861700, 936700, 1016700, 1101700, 1191700, 1286700, 1386700, 1496700, 1616700, 1746700, 1886700
]

const PET_RARITY_OFFSET: Partial<Record<typedHypixelApi.Pet['tier'], number>> = {
	COMMON: 0,
	UNCOMMON: 6,
	RARE: 11,
	EPIC: 16,
	LEGENDARY: 20
}

function calculateXpTable(rarity: keyof typeof PET_RARITY_OFFSET) {
	const data = [0]
	let current = 0
	for (let i = 0; i < 100; i++) {
		current += PET_LEVELS[i + ((rarity in PET_RARITY_OFFSET) ? PET_RARITY_OFFSET[rarity] : PET_RARITY_OFFSET['LEGENDARY'])!]
		data.push(current)
	}
	return data
}

const RARITY_XP_TABLES = {
	COMMON: calculateXpTable('COMMON'),
	UNCOMMON: calculateXpTable('UNCOMMON'),
	RARE: calculateXpTable('RARE'),
	EPIC: calculateXpTable('EPIC'),
	LEGENDARY: calculateXpTable('LEGENDARY'),
	MYTHIC: calculateXpTable('MYTHIC')
}


export interface Pet {
	id: string
	xp: number
	level: number
	tier: typedHypixelApi.Pet['tier']
	skin: string | null
	item: ItemListItem | null
}

export interface PetsData {
	active: Pet | null
	list: Pet[]
	missingIds: string[]
}

export async function cleanPets(data: typedHypixelApi.SkyBlockProfileMember): Promise<PetsData> {
	const obtainedPets: Pet[] = []
	let activePet: Pet | null = null

	const allPetIds = await fetchPets()
	const obtainedPetIds: string[] = []

	const itemList = await fetchItemList()

	for (const petData of data.pets ?? []) {
		const xpTable = RARITY_XP_TABLES[petData.tier]
		const level = levelFromXpTable(petData.exp, xpTable)
		const pet: Pet = {
			id: petData.type,
			// we round down xp because there's no point in showing decimals
			xp: Math.floor(petData.exp),
			level,
			tier: petData.tier,
			skin: petData.skin ?? null,
			item: petData.heldItem ? (itemList.list.find(i => i.id === petData.heldItem) ?? null) : null
		}
		obtainedPetIds.push(pet.id)
		obtainedPets.push(pet)
		if (petData.active)
			activePet = pet
	}

	const missingPetIds = allPetIds.filter(id => !obtainedPetIds.includes(id))

	return {
		active: activePet,
		list: obtainedPets,
		missingIds: missingPetIds
	}
}