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package validator
import (
//nolint:revive
. "github.com/vektah/gqlparser/v2/ast"
"github.com/vektah/gqlparser/v2/gqlerror"
)
type AddErrFunc func(options ...ErrorOption)
type ruleFunc func(observers *Events, addError AddErrFunc)
type rule struct {
name string
rule ruleFunc
}
var rules []rule
// addRule to rule set.
// f is called once each time `Validate` is executed.
func AddRule(name string, f ruleFunc) {
rules = append(rules, rule{name: name, rule: f})
}
func Validate(schema *Schema, doc *QueryDocument) gqlerror.List {
var errs gqlerror.List
if schema == nil {
errs = append(errs, gqlerror.Errorf("cannot validate as Schema is nil"))
}
if doc == nil {
errs = append(errs, gqlerror.Errorf("cannot validate as QueryDocument is nil"))
}
if len(errs) > 0 {
return errs
}
observers := &Events{}
for i := range rules {
rule := rules[i]
rule.rule(observers, func(options ...ErrorOption) {
err := &gqlerror.Error{
Rule: rule.name,
}
for _, o := range options {
o(err)
}
errs = append(errs, err)
})
}
Walk(schema, doc, observers)
return errs
}
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