package effects

import (
	"fmt"
	"git.aiterp.net/lucifer3/server/device"
	"time"
)

type VRange struct {
	States      []device.State `json:"states"`
	Variable    string         `json:"variable"`
	Min         float64        `json:"min"`
	Max         float64        `json:"max"`
	Interpolate bool           `json:"interpolate"`
}

func (e VRange) VariableName() string {
	return e.Variable
}

func (e VRange) VariableState(_, _ int, value float64) device.State {
	if value <= e.Min {
		return e.States[0]
	} else if value >= e.Max {
		return e.States[len(e.States)-1]
	}

	return gradientStateFactor(e.States, e.Interpolate, (value-e.Min)/(e.Max-e.Min))
}

func (e VRange) State(_, _, _ int) device.State {
	if len(e.States) == 0 {
		return device.State{}
	}
	return e.States[0]
}

func (e VRange) Frequency() time.Duration {
	return 0
}

func (e VRange) EffectDescription() string {
	return fmt.Sprintf(
		"VRange(states:%s, name:%s, range:%.1f..%.1f)",
		statesDescription(e.States), e.Variable, e.Min, e.Max,
	)
}