126 lines
3.0 KiB
Go
126 lines
3.0 KiB
Go
/*
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* Copyright © 2018-2020 A Bunch Tell LLC.
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*
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* This file is part of WriteFreely.
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*
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* WriteFreely is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, included
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* in the LICENSE file in this source code package.
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*/
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package writefreely
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import (
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"fmt"
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"net/http"
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"time"
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. "github.com/gorilla/feeds"
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"github.com/gorilla/mux"
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stripmd "github.com/writeas/go-strip-markdown/v2"
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"github.com/writeas/web-core/log"
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)
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func ViewFeed(app *App, w http.ResponseWriter, req *http.Request) error {
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alias := collectionAliasFromReq(req)
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// Display collection if this is a collection
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var c *Collection
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var err error
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if app.cfg.App.SingleUser {
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c, err = app.db.GetCollectionByID(1)
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} else {
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c, err = app.db.GetCollection(alias)
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}
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if err != nil {
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return nil
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}
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silenced, err := app.db.IsUserSilenced(c.OwnerID)
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if err != nil {
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log.Error("view feed: get user: %v", err)
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return ErrInternalGeneral
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}
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if silenced {
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return ErrCollectionNotFound
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}
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c.hostName = app.cfg.App.Host
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if c.IsPrivate() || c.IsProtected() {
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return ErrCollectionNotFound
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}
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// Fetch extra data about the Collection
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// TODO: refactor out this logic, shared in collection.go:fetchCollection()
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coll := &DisplayCollection{CollectionObj: &CollectionObj{Collection: *c}}
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if c.PublicOwner {
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u, err := app.db.GetUserByID(coll.OwnerID)
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if err != nil {
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// Log the error and just continue
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log.Error("Error getting user for collection: %v", err)
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} else {
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coll.Owner = u
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}
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}
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tag := mux.Vars(req)["tag"]
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if tag != "" {
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coll.Posts, _ = app.db.GetPostsTagged(app.cfg, c, tag, 1, false)
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} else {
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coll.Posts, _ = app.db.GetPosts(app.cfg, c, 1, false, true, false)
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}
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author := ""
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if coll.Owner != nil {
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author = coll.Owner.Username
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}
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collectionTitle := coll.DisplayTitle()
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if tag != "" {
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collectionTitle = tag + " — " + collectionTitle
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}
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baseUrl := coll.CanonicalURL()
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basePermalinkUrl := baseUrl
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siteURL := baseUrl
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if tag != "" {
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siteURL += "tag:" + tag
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}
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feed := &Feed{
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Title: collectionTitle,
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Link: &Link{Href: siteURL},
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Description: coll.Description,
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Author: &Author{author, ""},
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Created: time.Now(),
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}
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var title, permalink string
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for _, p := range *coll.Posts {
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// Add necessary path back to the web browser for Web Monetization if needed
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p.Collection = coll.CollectionObj // augmentReadingDestination requires a populated Collection field
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p.augmentReadingDestination()
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// Create the item for the feed
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title = p.PlainDisplayTitle()
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permalink = fmt.Sprintf("%s%s", baseUrl, p.Slug.String)
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feed.Items = append(feed.Items, &Item{
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Id: fmt.Sprintf("%s%s", basePermalinkUrl, p.Slug.String),
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Title: title,
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Link: &Link{Href: permalink},
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Description: "<![CDATA[" + stripmd.Strip(p.Content) + "]]>",
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Content: string(p.HTMLContent),
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Author: &Author{author, ""},
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Created: p.Created,
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Updated: p.Updated,
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})
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}
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rss, err := feed.ToRss()
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if err != nil {
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return err
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}
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fmt.Fprint(w, rss)
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return nil
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}
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