package atomfeed

import "errors"

type PlainText struct {
	*CommonAttributes
	Type string `xml:"type,attr,omitempty"` // Must be text or html
	Text string `xml:"text"`
}

// isText checks whether the PlainText is a Text. It returns a bool.
func (p *PlainText) isText() bool { return true }

// Check checks the PlainText for incompatibilities with RFC4287. It returns an
// error.
func (p *PlainText) Check() error {
	if p.Type != "" && p.Type != "text" && p.Type != "html" {
		return errors.New("type attribute of plain text must be text or html if not omitted")
	}

	if p.Type == "html" && !isCorrectlyEscaped(p.Text) {
		return errors.New("text element of plain text not correctly escaped")
	}

	if p.Text == "" {
		return errors.New("text element of plain text empty")
	}

	return nil
}