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package spectre

import (
	"errors"
	"strings"
)

// Template is a template type
type Template string

const (
	Maximum Template = "Maximum"
	Long    Template = "Long"
	Medium  Template = "Medium"
	Short   Template = "Short"
	Pin     Template = "PIN"
	Name    Template = "Name"
	Phrase  Template = "Phrase"
	Basic   Template = "Basic"
)

// ParseTemplate parses a Template from s
func ParseTemplate(s string) (Template, error) {
	switch strings.ToLower(s) {
	case "maximum", "max":
		return Maximum, nil
	case "long", "l":
		return Long, nil
	case "medium", "med":
		return Medium, nil
	case "short", "sh":
		return Short, nil
	case "pin":
		return Pin, nil
	case "name":
		return Name, nil
	case "phrase":
		return Phrase, nil
	case "basic":
		return Basic, nil
	default:
		return "", errors.New("unknown Template")
	}
}

var templates = map[Template][]string{
	Maximum: {
		"anoxxxxxxxxxxxxxxxxx",
		"axxxxxxxxxxxxxxxxxno",
	},
	Long: {
		"CvcvnoCvcvCvcv",
		"CvcvCvcvnoCvcv",
		"CvcvCvcvCvcvno",
		"CvccnoCvcvCvcv",
		"CvccCvcvnoCvcv",
		"CvccCvcvCvcvno",
		"CvcvnoCvccCvcv",
		"CvcvCvccnoCvcv",
		"CvcvCvccCvcvno",
		"CvcvnoCvcvCvcc",
		"CvcvCvcvnoCvcc",
		"CvcvCvcvCvccno",
		"CvccnoCvccCvcv",
		"CvccCvccnoCvcv",
		"CvccCvccCvcvno",
		"CvcvnoCvccCvcc",
		"CvcvCvccnoCvcc",
		"CvcvCvccCvccno",
		"CvccnoCvcvCvcc",
		"CvccCvcvnoCvcc",
		"CvccCvcvCvccno",
	},
	Medium: {
		"CvcnoCvc",
		"CvcCvcno",
	},
	Short: {
		"Cvcn",
	},
	Pin: {
		"nnnn",
	},
	Name: {
		"cvccvcvcv",
	},
	Phrase: {
		"cvcc cvc cvccvcv cvc",
		"cvc cvccvcvcv cvcv",
		"cv cvccv cvc cvcvccv",
	},
	Basic: {
		"aaanaaan",
		"aannaaan",
		"aaannaaa",
	},
}

var characters = map[string]string{
	"V": "AEIOU",
	"C": "BCDFGHJKLMNPQRSTVWXYZ",
	"v": "aeiou",
	"c": "bcdfghjklmnpqrstvwxyz",
	"A": "AEIOUBCDFGHJKLMNPQRSTVWXYZ",
	"a": "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz",
	"n": "0123456789",
	"o": "@&%?,=[]_:-+*$#!'^~;()/.",
	"x": "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz0123456789!@#$%^&*()",
	" ": " ",
}