parameter.go

package webserver

import "regexp"

// ParameterType defines the type specification of a route parameter
type ParameterType string

// These are constants for parameter types and their corresponding replacement RegExp statements
const (
	ParameterTypeAnything ParameterType = `.*`
	ParameterTypeString   ParameterType = `\w+`
	ParameterTypeInteger  ParameterType = `\d+`
	ParameterTypeUUID     ParameterType = `[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}`
	ParameterTypeDate     ParameterType = `\d{4}-\d{2}-\d{2}`
	ParameterTypeTime     ParameterType = `\d{2}:\d{2}:\d{2}(?:\.\d+)?`
	ParameterTypeDateTime ParameterType = ParameterTypeDate + `T` + ParameterTypeTime + `(?:Z|[+-]\d{2}:\d{2})`
	ParameterTypeBoolean  ParameterType = `(?i)(?:true|false)`
	ParameterTypeFloat    ParameterType = `\d+(?:\.\d+)?`
)

// Evaludate evaluates the given value against the parameter type's defined regex expression and returns whether or not the regex matches
func (parameterType *ParameterType) Evaludate(value string) (bool, error) {
	var pattern = "^" + string(*parameterType) + "$"
	return regexp.MatchString(
		pattern,
		value,
	)
}