mirror of
https://github.com/aljazceru/njump.git
synced 2025-12-17 06:14:22 +01:00
95 lines
2.8 KiB
Go
95 lines
2.8 KiB
Go
package main
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import (
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"encoding/json"
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"encoding/xml"
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"fmt"
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"net/http"
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"net/url"
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"strings"
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)
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type OEmbedResponse struct {
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// for xml encoding
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XMLName xml.Name `json:"-" xml:"oembed"`
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Type string `json:"type" xml:"type"`
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Version string `json:"version" xml:"version"`
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Title string `json:"title,omitempty" xml:"title,omitempty"`
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AuthorName string `json:"author_name,omitempty" xml:"author_name,omitempty"`
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AuthorURL string `json:"author_url,omitempty" xml:"author_url,omitempty"`
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ProviderName string `json:"provider_name,omitempty" xml:"provider_name,omitempty"`
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ProviderURL string `json:"provider_url,omitempty" xml:"provider_url,omitempty"`
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CacheAge int `json:"cache_age,omitempty" xml:"cache_age,omitempty"`
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ThumbnailURL string `json:"thumbnail_url,omitempty" xml:"thumbnail_url,omitempty"`
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ThumbnailWidth int `json:"thumbnail_width,omitempty" xml:"thumbnail_width,omitempty"`
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ThumbnailHeight int `json:"thumbnail_height,omitempty" xml:"thumbnail_height,omitempty"`
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// photo, video, rich types
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Width int `json:"width,omitempty" xml:"width,omitempty"`
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Height int `json:"height,omitempty" xml:"height,omitempty"`
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// photo types
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URL string `json:"url,omitempty" xml:"url,omitempty"`
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// video, rich types
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HTML string `json:"html,omitempty" xml:"html,omitempty"`
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}
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func renderOEmbed(w http.ResponseWriter, r *http.Request) {
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ctx := r.Context()
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targetURL, err := url.Parse(r.URL.Query().Get("url"))
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if err != nil {
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http.Error(w, "invalid url: "+err.Error(), 400)
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return
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}
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code := strings.Split(targetURL.Path, "/")[1]
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if !strings.HasPrefix(code, "nevent1") {
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http.Error(w, "oembed is only supported for nevent1 codes, not '"+code+"'", 400)
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return
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}
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host := r.Header.Get("X-Forwarded-Host")
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data, err := grabData(ctx, code, false)
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if err != nil {
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w.Header().Set("Cache-Control", "max-age=180")
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log.Warn().Err(err).Str("code", code).Msg("event not found on oembed")
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http.Error(w, "error fetching event: "+err.Error(), http.StatusNotFound)
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return
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}
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res := OEmbedResponse{
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Version: "1.0",
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ProviderName: "njump",
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ProviderURL: "https://" + host,
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Title: data.event.author.Name + " wrote",
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AuthorName: data.event.authorLong(),
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AuthorURL: fmt.Sprintf("https://%s/%s", host, data.event.Npub()),
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}
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switch {
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case data.video != "":
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res.Type = "video"
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res.HTML = fmt.Sprintf(`<video controls><source src="%s"></video>`, data.video)
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case data.image != "":
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res.Type = "image"
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res.URL = data.image
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res.HTML = fmt.Sprintf(`<img src="%s">`, data.image)
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default:
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res.Type = "rich"
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res.HTML = data.content
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}
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format := r.URL.Query().Get("format")
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if format == "xml" {
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w.Header().Add("Content-Type", "text/xml")
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xml.NewEncoder(w).Encode(res)
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} else {
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w.Header().Add("Content-Type", "application/json")
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json.NewEncoder(w).Encode(res)
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}
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}
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