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114 lines
2.2 KiB
Go
114 lines
2.2 KiB
Go
package articles
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import (
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"bytes"
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"os"
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"strings"
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"time"
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"git.phc.dm.unipi.it/phc/website/config"
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"gopkg.in/yaml.v3"
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)
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type Article struct {
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Id string
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Title string
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Description string
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Tags []string
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PublishDate time.Time
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ArticlePath string
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markdownSource string
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renderedHTML string
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}
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func (article *Article) HasTag(tag string) bool {
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for _, t := range article.Tags {
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if t == tag {
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return true
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}
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}
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return false
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}
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func NewArticle(articlePath string) (*Article, error) {
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article := &Article{
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ArticlePath: articlePath,
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}
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err := article.load()
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if err != nil {
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return nil, err
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}
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return article, nil
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}
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func trimAll(vs []string) []string {
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r := []string{}
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for _, v := range vs {
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r = append(r, strings.TrimSpace(v))
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}
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return r
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}
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func (article *Article) load() error {
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fileBytes, err := os.ReadFile(article.ArticlePath)
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if err != nil {
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return err
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}
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source := string(fileBytes)
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// TODO: Ehm bugia pare che esista "https://github.com/yuin/goldmark-meta" però non penso valga la pena aggiungerlo
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parts := strings.SplitN(source, "---", 3)[1:]
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frontMatterSource := parts[0]
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markdownSource := parts[1]
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var frontMatter struct {
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Id string `yaml:"id"`
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Title string `yaml:"title"`
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Description string `yaml:"description"`
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Tags string `yaml:"tags"`
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PublishDate string `yaml:"publish_date"`
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}
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if err := yaml.Unmarshal([]byte(frontMatterSource), &frontMatter); err != nil {
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return err
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}
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publishDate, err := time.Parse("2006/01/02 15:04", frontMatter.PublishDate)
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if err != nil {
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return err
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}
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article.Id = frontMatter.Id
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article.Title = frontMatter.Title
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article.Description = frontMatter.Description
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article.Tags = trimAll(strings.Split(frontMatter.Tags, ","))
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article.PublishDate = publishDate
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article.markdownSource = markdownSource
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article.renderedHTML = ""
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return nil
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}
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func (article *Article) Render() (string, error) {
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if config.Mode == "development" {
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article.load()
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}
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if article.renderedHTML == "" {
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var buf bytes.Buffer
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if err := articleMarkdown.Convert([]byte(article.markdownSource), &buf); err != nil {
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return "", err
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}
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article.renderedHTML = buf.String()
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}
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return article.renderedHTML, nil
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}
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