package support

import "fmt"

// Severity indicatest the severity of a Message.
type Severity int

const (
	// UnknownSev indicates that the severity of the error is unknown, and should not stop processing.
	UnknownSev = iota
	// InfoSev indicates information, for example missing values.yaml file
	InfoSev
	// WarningSev indicates that something does not meet code standards, but will likely function.
	WarningSev
	// ErrorSev indicates that something will not likely function.
	ErrorSev
)

// sev matches the *Sev states.
var sev = []string{"UNKNOWN", "INFO", "WARNING", "ERROR"}

// Message is a linting output message
type Message struct {
	// Severity is one of the *Sev constants
	Severity Severity
	// Text contains the message text
	Text string
}

type Linter struct {
	Messages []Message
	ChartDir string
}

type LintError interface {
	error
}

type ValidationFunc func(*Linter) LintError

// String prints a string representation of this Message.
//
// Implements fmt.Stringer.
func (m Message) String() string {
	return fmt.Sprintf("[%s] %s", sev[m.Severity], m.Text)
}

// Returns true if the validation passed
func (l *Linter) RunLinterRule(severity Severity, lintError LintError) bool {
	if lintError != nil {
		l.Messages = append(l.Messages, Message{Text: lintError.Error(), Severity: severity})
	}
	return lintError == nil
}