/
ba.go
40 lines (31 loc) · 955 Bytes
/
ba.go
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package validators
// BA struct - Bahia
// Implements the Validator interface
type BA struct {
}
// IsValid func
func (v BA) IsValid(insc string) bool {
rule := NewRule()
if !rule.IsCorrectSize(insc, 8) && !rule.IsCorrectSize(insc, 9) {
return false
}
var lengthCalc = len(insc) - 1
base := rule.GetBaseValue(insc, lengthCalc)
var digitComparison = insc[:1]
if rule.IsCorrectSize(insc, 9) {
digitComparison = insc[1:2]
}
var mapMod11 = map[string]string{"6": "6", "7": "7", "9": "9"}
_, find := mapMod11[digitComparison]
var mod = 10
if find {
mod = 11
}
fWeights := rule.GetWeight(lengthCalc, 6)
total := rule.CalculateTotal(insc, lengthCalc, fWeights)
firstDigit := rule.GetDigit(total, mod)
sWeights := rule.GetWeight(lengthCalc+1, 7)
total = rule.CalculateTotal(base[:lengthCalc-1]+firstDigit, lengthCalc, sWeights)
secondDigit := rule.GetDigit(total, mod)
return insc == base[:len(base)-1]+secondDigit+firstDigit
}