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
		brawlEw: number
		poisonResistance: number
		enduranceBonus: number
	}
	skills: {
		innate: {}
		general: {}
		combat: {}
		language: {}
		custom: {}
	}
	gear: {
		weapons: {}
		defensiveWeapons: {}
		armor: {}
		items: {}
	}
	spells: {}
}

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
	}

	derivedData(skip: { skills?: boolean, weapons?: boolean, defensiveWeapons?: boolean, armor?: boolean, items?: boolean, spells?: boolean } = {} ): M5CharacterCalculatedData {
		let ret: M5CharacterCalculatedData = {
			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,
				brawlEw: 0,
				poisonResistance: 0,
				enduranceBonus: 0
			},
			skills: {
				innate: {},
				general: {},
				combat: {},
				language: {},
				custom: {}
			},
			gear: {
				weapons: {},
				defensiveWeapons: {},
				armor: {},
				items: {}
			},
			spells: {}
		} as M5CharacterCalculatedData

		const context = (this as any).data
		const data = context.data
		ret.level = M5Character.levelFromExp(data.es)

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

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

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

		if (!skip.skills) {
			context.items?.filter(item => item.data.type === "skill").forEach(item => {
				item.prepareDerivedData()
				const skillMap = ret.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
				}
			})
		}

		if (!skip.weapons) {	
			context.items?.filter(item => item.data.type === "weapon").forEach(item => {
				item.prepareDerivedData()

				let label = item.data.name
				if (item.data.data.magic) {
					label += "*("
						+ (item.data.data.stats.attackBonus < 0 ? "" : "+")
						+ item.data.data.stats.attackBonus + "/"
						+ (item.data.data.stats.damageBonus < 0 ? "" : "+")
						+ item.data.data.stats.damageBonus + ")"
				}

				ret.gear.weapons[item.data._id] = {
					label: label,
					skillId: item.data.data.skillId,
					magic: item.data.data.magic,
					calc: item.data.data.calc
				}
			})
		}

		if (!skip.defensiveWeapons) {	
			context.items?.filter(item => item.data.type === "defensiveWeapon").forEach(item => {
				item.prepareDerivedData()

				let label = item.data.name
				if (item.data.data.magic) {
					label += "*("
						+ (item.data.data.stats.defenseBonus < 0 ? "" : "+")
						+ item.data.data.stats.defenseBonus + ")"
				}

				ret.gear.defensiveWeapons[item.data._id] = {
					label: label,
					skillId: item.data.data.skillId,
					magic: item.data.data.magic,
					calc: item.data.data.calc
				}
			})
		}

		if (!skip.armor) {	
			context.items?.filter(item => item.data.type === "armor").forEach(item => {
				item.prepareDerivedData()

				let label = item.data.name
				if (item.data.data.magic) {
					label += "*"
				}

				ret.gear.armor[item.data._id] = {
					label: label,
					magic: item.data.data.magic,
					calc: item.data.data.calc
				}
			})
		}

		if (!skip.items) {	
			context.items?.filter(item => item.data.type === "item").forEach(item => {
				item.prepareDerivedData()

				let label = item.data.name
				if (item.data.data.magic) {
					label += "*"
				}

				ret.gear.items[item.data._id] = {
					label: label,
					magic: item.data.data.magic,
					calc: item.data.data.calc
				}
			})
		}

		if (!skip.spells) {	
			context.items?.filter(item => item.data.type === "spell").forEach(item => {
				item.prepareDerivedData()

				ret.spells[item.data._id] = {
					label: item.data.name,
					process: "midgard5.spell-process-" + item.data.data.process,
					calc: item.data.data.calc
				}
			})
		}

		return ret
	}

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

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

	getSkill(skillId: string): M5Skill {
		return (this as any).getEmbeddedDocument("Item", skillId) as M5Skill
	}

}