package game

import (
	"github.com/google/uuid"
)

type ShipType struct {
	ID       uuid.UUID `json:"id"`
	Name     string    `json:"name"`
	Drive    Float     `json:"drive"`
	Armament uint      `json:"armament"`
	Weapons  Float     `json:"weapons"`
	Shields  Float     `json:"shields"`
	Cargo    Float     `json:"cargo"`
}

func (st ShipType) Equal(o ShipType) bool {
	return st.Drive == o.Drive &&
		st.Weapons == o.Weapons &&
		st.Armament == o.Armament &&
		st.Shields == o.Shields &&
		st.Cargo == o.Cargo
}

func (st ShipType) BlockMass(t Tech) float64 {
	switch t {
	case TechDrive:
		return st.DriveBlockMass()
	case TechWeapons:
		return st.WeaponsBlockMass()
	case TechShields:
		return st.ShieldsBlockMass()
	case TechCargo:
		return st.CargoBlockMass()
	default:
		panic("BlockMass: unexpectec tech: " + t.String())
	}
}

func (st ShipType) DriveBlockMass() float64 {
	return st.Drive.F()
}

func (st ShipType) WeaponsBlockMass() float64 {
	if st.Armament == 0 || st.Weapons == 0 {
		return 0
	}
	return float64(st.Armament+1) * (st.Weapons.F() / 2)
}

func (st ShipType) ShieldsBlockMass() float64 {
	return st.Shields.F()
}

func (st ShipType) CargoBlockMass() float64 {
	return st.Cargo.F()
}

func (st ShipType) EmptyMass() float64 {
	shipMass := st.DriveBlockMass() + st.ShieldsBlockMass() + st.CargoBlockMass() + st.WeaponsBlockMass()
	return shipMass
}

// ProductionCost returns Material (MAT) and Population (POP) to produce this [ShipType]
// TODO: do we need this?
func (st ShipType) ProductionCost() (mat float64, pop float64) {
	mat = st.EmptyMass()
	pop = mat * 10
	return
}