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// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package json // import "miniflux.app/v2/internal/reader/json"
import (
"log/slog"
"slices"
"strings"
"time"
"miniflux.app/v2/internal/crypto"
"miniflux.app/v2/internal/model"
"miniflux.app/v2/internal/reader/date"
"miniflux.app/v2/internal/reader/sanitizer"
"miniflux.app/v2/internal/urllib"
)
type JSONAdapter struct {
jsonFeed *JSONFeed
}
func NewJSONAdapter(jsonFeed *JSONFeed) *JSONAdapter {
return &JSONAdapter{jsonFeed}
}
func (j *JSONAdapter) BuildFeed(baseURL string) *model.Feed {
feed := &model.Feed{
Title: strings.TrimSpace(j.jsonFeed.Title),
FeedURL: strings.TrimSpace(j.jsonFeed.FeedURL),
SiteURL: strings.TrimSpace(j.jsonFeed.HomePageURL),
}
if feed.FeedURL == "" {
feed.FeedURL = strings.TrimSpace(baseURL)
}
// Fallback to the feed URL if the site URL is empty.
if feed.SiteURL == "" {
feed.SiteURL = feed.FeedURL
}
if feedURL, err := urllib.AbsoluteURL(baseURL, feed.FeedURL); err == nil {
feed.FeedURL = feedURL
}
if siteURL, err := urllib.AbsoluteURL(baseURL, feed.SiteURL); err == nil {
feed.SiteURL = siteURL
}
// Fallback to the feed URL if the title is empty.
if feed.Title == "" {
feed.Title = feed.SiteURL
}
// Populate the icon URL if present.
for _, iconURL := range []string{j.jsonFeed.FaviconURL, j.jsonFeed.IconURL} {
iconURL = strings.TrimSpace(iconURL)
if iconURL != "" {
if absoluteIconURL, err := urllib.AbsoluteURL(feed.SiteURL, iconURL); err == nil {
feed.IconURL = absoluteIconURL
break
}
}
}
for _, item := range j.jsonFeed.Items {
entry := model.NewEntry()
entry.Title = strings.TrimSpace(item.Title)
entry.URL = strings.TrimSpace(item.URL)
// Make sure the entry URL is absolute.
if entryURL, err := urllib.AbsoluteURL(feed.SiteURL, entry.URL); err == nil {
entry.URL = entryURL
}
// The entry title is optional, so we need to find a fallback.
if entry.Title == "" {
for _, value := range []string{item.Summary, item.ContentText, item.ContentHTML} {
if value != "" {
entry.Title = sanitizer.TruncateHTML(value, 100)
}
}
}
// Fallback to the entry URL if the title is empty.
if entry.Title == "" {
entry.Title = entry.URL
}
// Populate the entry content.
for _, value := range []string{item.ContentHTML, item.ContentText, item.Summary} {
value = strings.TrimSpace(value)
if value != "" {
entry.Content = value
break
}
}
// Populate the entry date.
for _, value := range []string{item.DatePublished, item.DateModified} {
value = strings.TrimSpace(value)
if value != "" {
if date, err := date.Parse(value); err != nil {
slog.Debug("Unable to parse date from JSON feed",
slog.String("date", value),
slog.String("url", entry.URL),
slog.Any("error", err),
)
} else {
entry.Date = date
break
}
}
}
if entry.Date.IsZero() {
entry.Date = time.Now()
}
// Populate the entry author.
itemAuthors := j.jsonFeed.Authors
itemAuthors = append(itemAuthors, item.Authors...)
itemAuthors = append(itemAuthors, item.Author, j.jsonFeed.Author)
var authorNames []string
for _, author := range itemAuthors {
authorName := strings.TrimSpace(author.Name)
if authorName != "" {
authorNames = append(authorNames, authorName)
}
}
slices.Sort(authorNames)
authorNames = slices.Compact(authorNames)
entry.Author = strings.Join(authorNames, ", ")
// Populate the entry enclosures.
for _, attachment := range item.Attachments {
attachmentURL := strings.TrimSpace(attachment.URL)
if attachmentURL != "" {
if absoluteAttachmentURL, err := urllib.AbsoluteURL(feed.SiteURL, attachmentURL); err == nil {
entry.Enclosures = append(entry.Enclosures, &model.Enclosure{
URL: absoluteAttachmentURL,
MimeType: attachment.MimeType,
Size: attachment.Size,
})
}
}
}
// Populate the entry tags.
for _, tag := range item.Tags {
tag = strings.TrimSpace(tag)
if tag != "" {
entry.Tags = append(entry.Tags, tag)
}
}
// Generate a hash for the entry.
for _, value := range []string{item.ID, item.URL, item.ContentText + item.ContentHTML + item.Summary} {
value = strings.TrimSpace(value)
if value != "" {
entry.Hash = crypto.Hash(value)
break
}
}
feed.Entries = append(feed.Entries, entry)
}
return feed
}
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