import { M5Item } from "../items/M5Item"
import { M5Attribute, M5RollData, M5Skill, M5SkillLearned } from "../M5Base"

export interface M5CharacterCalculatedData {
	level: number
	attributes: {
		st: { value: number, bonus: number }
		gs: { value: number, bonus: number }
		gw: { value: number, bonus: number }
		ko: { value: number, bonus: number }
		in: { value: number, bonus: number }
		zt: { value: number, bonus: number }
		au: { value: number, bonus: number }
		pa: { value: number, bonus: number }
		wk: { value: number, bonus: number }
	}
	stats: {
		armor: number
		defense: number
		damageBonus: number
		attackBonus: number
		defenseBonus: number
		movementBonus: number
		resistanceMind: number
		resistanceBody: number
		spellCasting: number
		brawl: number
		poisonResistance: number
		enduranceBonus: number
	}
	skills: {
		general: {}
	}
}

export class M5Character extends Actor {

	// constructor(
	// 	data: ConstructorParameters<typeof foundry.documents.BaseActor>[0],
	// 	context?: ConstructorParameters<typeof foundry.documents.BaseActor>[1]
	// ) {
	// 	super(data, context)
	// 	this.prepareDerivedData()
	// }

	static attributeMinMax(attribute: M5Attribute) {
		return Math.min(100, Math.max(0, attribute.value + attribute.bonus))
	}

	static attributeBonus(attribute: M5Attribute) {
		const value = this.attributeMinMax(attribute)
		if (value > 95)
			return 2
		if (value > 80)
			return 1
		if (value > 20)
			return 0
		if (value > 5)
			return -1
		return -2
	}

	prepareDerivedData() {
		const context = (this as any).data

		context.data.calc = {
			level: 0,
			attributes: {
				st: { value: 0, bonus: 0 },
				gs: { value: 0, bonus: 0 },
				gw: { value: 0, bonus: 0 },
				ko: { value: 0, bonus: 0 },
				in: { value: 0, bonus: 0 },
				zt: { value: 0, bonus: 0 },
				au: { value: 0, bonus: 0 },
				pa: { value: 0, bonus: 0 },
				wk: { value: 0, bonus: 0 }
			},
			stats: {
				armor: 0,
				defense: 0,
				damageBonus: 0,
				attackBonus: 0,
				defenseBonus: 0,
				movementBonus: 0,
				resistanceMind: 0,
				resistanceBody: 0,
				spellCasting: 0,
				brawl: 0,
				poisonResistance: 0,
				enduranceBonus: 0
			},
			skills: {
				general: {},
				combat: {},
				language: {},
				custom: {}
			}
		} as M5CharacterCalculatedData

		const data = context.data
		const calc = context.data.calc as M5CharacterCalculatedData
		calc.level = M5Character.levelFromExp(data.es)

		calc.attributes.st.value = M5Character.attributeMinMax(data.attributes.st) // TODO item effects
		calc.attributes.gs.value = M5Character.attributeMinMax(data.attributes.gs)
		calc.attributes.gw.value = M5Character.attributeMinMax(data.attributes.gw)
		calc.attributes.ko.value = M5Character.attributeMinMax(data.attributes.ko)
		calc.attributes.in.value = M5Character.attributeMinMax(data.attributes.in)
		calc.attributes.zt.value = M5Character.attributeMinMax(data.attributes.zt)
		calc.attributes.au.value = M5Character.attributeMinMax(data.attributes.au)
		calc.attributes.pa.value = M5Character.attributeMinMax(data.attributes.pa)
		calc.attributes.wk.value = M5Character.attributeMinMax(data.attributes.wk)

		calc.attributes.st.bonus = M5Character.attributeBonus(data.attributes.st)
		calc.attributes.gs.bonus = M5Character.attributeBonus(data.attributes.gs)
		calc.attributes.gw.bonus = M5Character.attributeBonus(data.attributes.gw)
		calc.attributes.ko.bonus = M5Character.attributeBonus(data.attributes.ko)
		calc.attributes.in.bonus = M5Character.attributeBonus(data.attributes.in)
		calc.attributes.zt.bonus = M5Character.attributeBonus(data.attributes.zt)
		calc.attributes.au.bonus = M5Character.attributeBonus(data.attributes.au)
		calc.attributes.pa.bonus = M5Character.attributeBonus(data.attributes.pa)
		calc.attributes.wk.bonus = M5Character.attributeBonus(data.attributes.wk)

		calc.stats.armor = 0
		calc.stats.defense = M5Character.defenseFromLevel(calc.level)
		calc.stats.damageBonus = Math.floor(calc.attributes.st.value/20) + Math.floor(calc.attributes.gs.value/30) - 3
		calc.stats.attackBonus = calc.attributes.gs.bonus
		calc.stats.defenseBonus = calc.attributes.gw.bonus
		calc.stats.movementBonus = 0
		calc.stats.resistanceMind = calc.stats.defense
		calc.stats.resistanceBody = calc.stats.defense + 1
		calc.stats.spellCasting = (data.info.magicUsing ? M5Character.spellCastingFromLevel(calc.level) : 3) + calc.attributes.zt.bonus
		calc.stats.brawl = Math.floor((calc.attributes.st.value + calc.attributes.gw.value) / 20)
		calc.stats.poisonResistance = 30 + Math.floor(calc.attributes.ko.value / 2)
		calc.stats.enduranceBonus = Math.floor(calc.attributes.ko.value/10) + Math.floor(calc.attributes.st.value/20)

		context.items?.filter(item => item.data.type === "skill").forEach(item => {
			item.prepareDerivedData()
			const skillMap = calc.skills[item.data.data.type]
			skillMap[item.data._id] = {
				label: item.data.name,
				fw: item.data.data.fw,
				attribute: item.data.data.attribute,
				calc: item.data.data.calc
			}
		})
	}

	override getRollData(): any {
		return {
			c: (this as any).data.data,
			i: null,
			rolls: {},
			res: {}
		} as M5RollData
	}

	static readonly levelThreshold: Array<number> = [0, 100, 250, 500, 750, 1000, 1250, 1500, 1750, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 6000, 7000, 8000, 9000, 10000, 12500, 15000, 17500, 20000, 22500, 25000, 30000, 35000, 40000, 45000, 50000, 55000, 60000, 65000, 70000, 75000, 80000, 85000, 90000, 95000, 100000, 105000, 110000, 115000, 120000, 125000, 130000, 135000, 140000, 145000, 150000, 155000, 160000, 165000, 170000, 175000, 180000, 185000, 190000, 195000, 200000, 205000, 210000, 215000, 220000, 225000, 230000, 235000, 240000, 245000, 250000, 255000, 260000, 265000, 270000, 275000, 280000]
	static levelFromExp(exp: number): number {
		const ret = M5Character.levelThreshold.findIndex(val => val > exp)
		return ret === -1 ? M5Character.levelThreshold.length : ret
	}

	static readonly defenseThreshold: Array<[number, number]> = [
		[1, 11],
		[2, 12],
		[5, 13],
		[10, 14],
		[15, 15],
		[20, 16],
		[25, 17],
		[30, 18]
	]
	static defenseFromLevel(lvl: number): number {
		const ret = M5Character.defenseThreshold.find(val => val[0] >= lvl)
		return ret ? ret[1] : M5Character.defenseThreshold[M5Character.defenseThreshold.length - 1][1]
	}

	static readonly spellCastingThreshold: Array<[number, number]> = [
		[1, 11],
		[2, 12],
		[4, 13],
		[6, 14],
		[8, 15],
		[10, 16],
		[15, 17],
		[20, 18]
	]
	static spellCastingFromLevel(lvl: number): number {
		const ret = M5Character.spellCastingThreshold.find(val => val[0] >= lvl)
		return ret ? ret[1] : M5Character.spellCastingThreshold[M5Character.spellCastingThreshold.length - 1][1]
	}

	skillBonus(skill: M5Skill, skillName?: string) {
		const attribute = this.attribute(skill.attribute)
		let ret = attribute ? M5Character.attributeBonus(attribute) : 0
		return ret
	}

	skillEw(skill: M5Skill, skillName?: string) {
		const bonus = this.skillBonus(skill, skillName)
		return skill.fw + bonus
	}

	attribute(name: string): M5Attribute {
		const context = (this as any).data
		return context.data.attributes[name]
	}

	createSkill(skillName: string): Promise<M5Item> {
		const itemData = {
			name: skillName,
			type: "skill"
		};

		return (this as any).createEmbeddedDocuments("Item", [itemData]).then(docs => {
			const item = docs[0]
			return item as M5Item
		})
	}

}