package main

import (
	"context"
	"strings"

	"github.com/PuerkitoBio/goquery"
)

func (p *post) firstParameter(parameter string) (result string) {
	if pp := p.Parameters[parameter]; len(pp) > 0 {
		result = pp[0]
	}
	return
}

func (p *post) title() string {
	return p.firstParameter("title")
}

func (p *post) summary() (summary string) {
	summary = p.firstParameter("summary")
	if summary != "" {
		return
	}
	summaryDivider := "<!--more-->"
	rendered, _ := renderMarkdown(p.Content)
	if strings.Contains(string(rendered), summaryDivider) {
		doc, _ := goquery.NewDocumentFromReader(strings.NewReader(strings.Split(string(rendered), summaryDivider)[0]))
		summary = doc.Text()
		return
	}
	doc, _ := goquery.NewDocumentFromReader(strings.NewReader(string(rendered)))
	summary = firstSentences(doc.Text(), 3)
	return
}

func (p *post) translations() []*post {
	translationkey := p.firstParameter("translationkey")
	if translationkey == "" {
		return nil
	}
	posts, err := getPosts(context.Background(), &postsRequestConfig{
		parameter:      "translationkey",
		parameterValue: translationkey,
	})
	if err != nil || len(posts) == 0 {
		return nil
	}
	translations := []*post{}
	for _, t := range posts {
		if p.Path != t.Path {
			translations = append(translations, t)
		}
	}
	if len(translations) == 0 {
		return nil
	}
	return translations
}