package temperature

import (
	"th7/data/temperature"
)

func c_to_k(val float64) float64 {
	return val + 273.15
}

func c_to_f(val float64) float64 {
	return (val * 9 / 5) + 32.0
}

func f_to_c(val float64) float64 {
	return (val - 32.0) * 5 / 9
}

func f_to_k(val float64) float64 {
	return (val-32.0)*5/9 + 273.15
}

func k_to_c(val float64) float64 {
	return val - 273.15
}

func k_to_f(val float64) float64 {
	return (val-273.15)*9/5 + 32.0
}

func C(unit temperature.Unit, value float64) float64 {
	switch unit {
	case temperature.C:
		return value
	case temperature.F:
		return c_to_f(value)
	case temperature.K:
		return c_to_k(value)
	}

	return 0
}

func F(unit temperature.Unit, value float64) float64 {
	switch unit {
	case temperature.F:
		return value
	case temperature.C:
		return f_to_c(value)
	case temperature.K:
		return f_to_k(value)
	}

	return 0
}

func K(unit temperature.Unit, value float64) float64 {
	switch unit {
	case temperature.K:
		return value
	case temperature.F:
		return k_to_f(value)
	case temperature.C:
		return k_to_c(value)
	}

	return 0
}