package pain

import (
	"regexp"
)

var (
	ISODateTime                   = regexp.MustCompile(`\d{4}(-\d\d){2}T\d\d(:\d\d){2}`)
	RestrictedIdentificationSEPA1 = regexp.MustCompile(`([A-Za-z0-9]|[\+|\?|/|\-|:|\(|\)|\.|,|'| ]){1,35}`)
	RestrictedIdentificationSEPA2 = regexp.MustCompile(`([A-Za-z0-9]|[\+|\?|/|\-|:|\(|\)|\.|,|']){1,35}`)
	Max15NumericText              = regexp.MustCompile(`[0-9]{1,15}`)
	RestrictedDecimalNumber       = regexp.MustCompile(`[+-]?\d+\.\d\d`)
	Max70Text                     = regexp.MustCompile(`.{1,70}`)
	Max140Text                    = regexp.MustCompile(`.{1,140}`)

	ServiceLevelSEPACode    = regexp.MustCompile(`SEPA`)
	SequenceType1Code       = regexp.MustCompile(`FRST|RCUR|FNAL|OOFF`)
	PaymentMethod2Code      = regexp.MustCompile(`DD`)
	LocalInstrumentSEPACode = regexp.MustCompile(`CORE|B2B`)

	IBAN2007Identifier             = regexp.MustCompile(`[A-Z]{2,2}[0-9]{2,2}[a-zA-Z0-9]{1,30}`)
	RestrictedPersonIdentifierSEPA = regexp.MustCompile(`[a-zA-Z]{2,2}[0-9]{2,2}([A-Za-z0-9]|[\+|\?|/|\-|:|\(|\)|\.|,|']){3,3}([A-Za-z0-9]|[\+|\?|/|\-|:|\(|\)|\.|,|']){1,28}`)
	BICIdentifier                  = regexp.MustCompile(`[A-Z]{6,6}[A-Z2-9][A-NP-Z0-9]([A-Z0-9]{3,3}){0,1}`)
)

var (
	SEPARegexps = map[string]*regexp.Regexp{
		"BIC":              BICIdentifier,
		"CreDtTm":          ISODateTime,
		"CtrlSum":          RestrictedDecimalNumber,
		"EndToEndId":       RestrictedIdentificationSEPA1,
		"IBAN":             IBAN2007Identifier,
		"Id":               RestrictedPersonIdentifierSEPA,
		"InstrId":          RestrictedIdentificationSEPA1,
		"InstdAmt":         RestrictedDecimalNumber, // Note: this is for the value
		"MsgId":            RestrictedIdentificationSEPA1,
		"MndtId":           RestrictedIdentificationSEPA2,
		"NbOfTxs":          Max15NumericText,
		"Nm":               Max70Text,
		"PmtInfId":         RestrictedIdentificationSEPA1,
		"PmtMetaLclInstrm": LocalInstrumentSEPACode,
		"PmtMetaSvcLvl":    ServiceLevelSEPACode,
		"PmtMtd":           PaymentMethod2Code,
		"ReqdColltnDt":     ISODateTime,
		"SeqTp":            SequenceType1Code,
		"Ustrd":            Max140Text,
	}
)