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tweetsvg
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feat: support quoted tweets

This commit is contained in:
Marcus Noble 2021-07-24 10:52:07 +01:00
parent 607f063abc
commit 749758fca4
2 changed files with 147 additions and 103 deletions
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195
main.go
View File

@ -94,6 +94,18 @@ func getTweet(w http.ResponseWriter, r *http.Request) {
return return
} }
processTweet(&tweet)
w.Header().Set("Content-type", "image/svg+xml")
_, err = w.Write(renderTemplate(tweet, false))
if err != nil {
fmt.Println(err)
w.WriteHeader(500)
return
}
}
func processTweet(tweet *anaconda.Tweet) {
gr := uniseg.NewGraphemes(tweet.FullText) gr := uniseg.NewGraphemes(tweet.FullText)
count := 0 count := 0
displayText := "" displayText := ""
@ -109,7 +121,7 @@ func getTweet(w http.ResponseWriter, r *http.Request) {
tweet.FullText = strings.ReplaceAll(tweet.FullText, "@"+user.Screen_name, fmt.Sprintf("<a rel=\"noopener\" target=\"_blank\" href=\"https://twitter.com/%s/\">@%s</a>", user.Screen_name, user.Screen_name)) tweet.FullText = strings.ReplaceAll(tweet.FullText, "@"+user.Screen_name, fmt.Sprintf("<a rel=\"noopener\" target=\"_blank\" href=\"https://twitter.com/%s/\">@%s</a>", user.Screen_name, user.Screen_name))
} }
for _, url := range tweet.Entities.Urls { for _, url := range tweet.Entities.Urls {
tweet.FullText = strings.ReplaceAll(tweet.FullText, url.Url, fmt.Sprintf("<a rel=\"noopener\" target=\"_blank\" href=\"https://twitter.com/%s/\">%s</a>", url.Expanded_url, url.Display_url)) tweet.FullText = strings.ReplaceAll(tweet.FullText, url.Url, fmt.Sprintf("<a rel=\"noopener\" target=\"_blank\" href=\"%s\">%s</a>", url.Expanded_url, url.Display_url))
} }
for _, hashtag := range tweet.Entities.Hashtags { for _, hashtag := range tweet.Entities.Hashtags {
tweet.FullText = strings.ReplaceAll(tweet.FullText, "#"+hashtag.Text, fmt.Sprintf("<a rel=\"noopener\" target=\"_blank\" href=\"https://twitter.com/hashtag/%s\">#%s</a>", hashtag.Text, hashtag.Text)) tweet.FullText = strings.ReplaceAll(tweet.FullText, "#"+hashtag.Text, fmt.Sprintf("<a rel=\"noopener\" target=\"_blank\" href=\"https://twitter.com/hashtag/%s\">#%s</a>", hashtag.Text, hashtag.Text))
@ -117,6 +129,13 @@ func getTweet(w http.ResponseWriter, r *http.Request) {
tweet.FullText = strings.ReplaceAll(tweet.FullText, "\n", "<br />") tweet.FullText = strings.ReplaceAll(tweet.FullText, "\n", "<br />")
if tweet.QuotedStatus != nil {
processTweet(tweet.QuotedStatus)
}
}
func renderTemplate(tweet anaconda.Tweet, isQuoted bool) []byte {
templateFuncs := template.FuncMap{ templateFuncs := template.FuncMap{
"base64": func(url string) string { "base64": func(url string) string {
res, err := http.Get(url) res, err := http.Get(url)
@ -139,79 +158,22 @@ func getTweet(w http.ResponseWriter, r *http.Request) {
return template.HTML(in) return template.HTML(in)
}, },
"calculateHeight": func(tweet anaconda.Tweet) string { "calculateHeight": func(tweet anaconda.Tweet) string {
height := 64.0 /* Avatar */ + 20 /* footer */ + 46 /* text margin */ + 22 /* margin */ return fmt.Sprintf("%dpx", calculateHeight(tweet))
},
lineWidth := 0.0 "renderTweet": func(tweet anaconda.Tweet) template.HTML {
lineHeight := 28.0 return template.HTML(string(renderTemplate(tweet, true)))
tweetText := strings.ReplaceAll(tweet.FullText, "<br />", " \n") },
tweetText = strip.StripTags(tweetText) "tweetWidth": func() string {
words := regexp.MustCompile(`[ |-]`).Split(tweetText, -1) if isQuoted {
for _, word := range words { return "450px"
if len(emoji.FindAll(word)) > 0 {
lineHeight = 32.0
}
if strings.Contains(word, "\n") {
height += lineHeight
lineHeight = 28.0
lineWidth = 0
continue
}
chars := strings.Split(word, "")
wordWidth := 0.0
for _, char := range chars {
wordWidth += getCharWidth(char)
}
if wordWidth > 435 {
height += (lineHeight * (math.Ceil(wordWidth/435) + 1))
lineHeight = 28.0
lineWidth = 0
} else if lineWidth+getCharWidth(" ")+wordWidth > 435 {
height += lineHeight
lineHeight = 28.0
lineWidth = wordWidth
} else {
lineWidth += wordWidth
}
} }
if lineWidth > 0 { return "499px"
height += lineHeight },
"className": func() string {
if isQuoted {
return "subtweet"
} }
return "tweetsvg"
if tweet.InReplyToScreenName != "" {
height += 42
}
for i, img := range tweet.ExtendedEntities.Media {
ratio := float64(img.Sizes.Small.W) / 468
tweet.ExtendedEntities.Media[i].Sizes.Small.W = 468
tweet.ExtendedEntities.Media[i].Sizes.Small.H = int((float64(img.Sizes.Small.H) / ratio) + 5.0)
}
if len(tweet.ExtendedEntities.Media) > 1 {
for i, img := range tweet.ExtendedEntities.Media {
tweet.ExtendedEntities.Media[i].Sizes.Small.W = (img.Sizes.Small.W / 2) - 20
tweet.ExtendedEntities.Media[i].Sizes.Small.H = (img.Sizes.Small.H / 2) - 20
}
}
switch len(tweet.ExtendedEntities.Media) {
case 1:
height += float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H)
case 2:
height += math.Max(float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[1].Sizes.Small.H)) + 5
case 3:
height += math.Max(float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[1].Sizes.Small.H)) + 5
height += float64(tweet.ExtendedEntities.Media[2].Sizes.Small.H) + 35
case 4:
height += math.Max(float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[1].Sizes.Small.H)) + 10
height += math.Max(float64(tweet.ExtendedEntities.Media[2].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[3].Sizes.Small.H)) + 10
height += 7
}
return fmt.Sprintf("%dpx", int64(height))
}, },
} }
@ -220,13 +182,90 @@ func getTweet(w http.ResponseWriter, r *http.Request) {
Funcs(templateFuncs). Funcs(templateFuncs).
ParseFS(content, "tweet.svg.tmpl")) ParseFS(content, "tweet.svg.tmpl"))
w.Header().Set("Content-type", "image/svg+xml") var buf bytes.Buffer
err = t.Execute(w, tweet) t.Execute(&buf, tweet)
if err != nil {
fmt.Println(err) return buf.Bytes()
w.WriteHeader(500) }
return
func calculateHeight(tweet anaconda.Tweet) int64 {
height := 64.0 /* Avatar */ + 20 /* footer */ + 46 /* text margin */ + 22 /* margin */
lineWidth := 0.0
lineHeight := 28.0
tweetText := strings.ReplaceAll(tweet.FullText, "<br />", " \n")
tweetText = strip.StripTags(tweetText)
words := regexp.MustCompile(`[ |-]`).Split(tweetText, -1)
for _, word := range words {
if len(emoji.FindAll(word)) > 0 {
lineHeight = 32.0
}
if strings.Contains(word, "\n") {
height += lineHeight
lineHeight = 28.0
lineWidth = 0
continue
}
chars := strings.Split(word, "")
wordWidth := 0.0
for _, char := range chars {
wordWidth += getCharWidth(char)
}
if wordWidth > 435 {
height += (lineHeight * (math.Ceil(wordWidth/435) + 1))
lineHeight = 28.0
lineWidth = 0
} else if lineWidth+getCharWidth(" ")+wordWidth > 435 {
height += lineHeight
lineHeight = 28.0
lineWidth = wordWidth
} else {
lineWidth += wordWidth
}
} }
if lineWidth > 0 {
height += lineHeight
}
if tweet.InReplyToScreenName != "" {
height += 42
}
for i, img := range tweet.ExtendedEntities.Media {
ratio := float64(img.Sizes.Small.W) / 468
tweet.ExtendedEntities.Media[i].Sizes.Small.W = 468
tweet.ExtendedEntities.Media[i].Sizes.Small.H = int((float64(img.Sizes.Small.H) / ratio) + 5.0)
}
if len(tweet.ExtendedEntities.Media) > 1 {
for i, img := range tweet.ExtendedEntities.Media {
tweet.ExtendedEntities.Media[i].Sizes.Small.W = (img.Sizes.Small.W / 2) - 20
tweet.ExtendedEntities.Media[i].Sizes.Small.H = (img.Sizes.Small.H / 2) - 20
}
}
switch len(tweet.ExtendedEntities.Media) {
case 1:
height += float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H)
case 2:
height += math.Max(float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[1].Sizes.Small.H)) + 5
case 3:
height += math.Max(float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[1].Sizes.Small.H)) + 5
height += float64(tweet.ExtendedEntities.Media[2].Sizes.Small.H) + 35
case 4:
height += math.Max(float64(tweet.ExtendedEntities.Media[0].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[1].Sizes.Small.H)) + 10
height += math.Max(float64(tweet.ExtendedEntities.Media[2].Sizes.Small.H), float64(tweet.ExtendedEntities.Media[3].Sizes.Small.H)) + 10
height += 7
}
if tweet.QuotedStatus != nil {
height += float64(calculateHeight(*tweet.QuotedStatus)) + 9
}
return int64(height)
} }
func suspendedTweet(w http.ResponseWriter) { func suspendedTweet(w http.ResponseWriter) {

55
tweet.svg.tmpl
View File

@ -1,44 +1,49 @@
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="499px" height="{{ calculateHeight . }}"> <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="{{ tweetWidth }}" height="{{ calculateHeight . }}">
<foreignObject x="0" y="0" width="499px" height="100%" fill="#eade52"> <foreignObject x="0" y="0" width="{{ tweetWidth }}" height="100%" fill="#eade52">
<style> <style>
.tweetsvg{clear:none;font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;} .{{ className }}{clear:none;font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;}
.tweetsvg.text{font-size: 23px;} .{{ className }}.text{font-size: 23px;}
a.tweetsvg{color: rgb(27, 149, 224); text-decoration:none;} a.{{ className }}{color: rgb(27, 149, 224); text-decoration:none;}
.tweetsvg a { color: #1da1f2; } .{{ className }} a { color: #1da1f2; }
blockquote.tweetsvg{margin:1px; background-color:#fefefe; border-radius:2%; border-style:solid; border-width:.1em; border-color:#ddd; padding:1em; font-family:sans; width:29rem} blockquote.{{ className }}{margin:1px; background-color:#fefefe; border-radius:2%; border-style:solid; border-width:.1em; border-color:#ddd; padding:1em; font-family:sans; width:29rem}
.avatar-tweetsvg{float:left; width:4rem; height:4rem; border-radius:50%;margin-right:.5rem;;margin-bottom:.5rem;border-style: solid; border-width:.1em; border-color:#ddd;} blockquote.subtweet{width:26rem; padding:0.8em;}
h1.tweetsvg{margin:0;font-size:15px;text-decoration:none;color:#000;} .avatar-{{ className }}{float:left; width:4rem; height:4rem; border-radius:50%;margin-right:.5rem;;margin-bottom:.5rem;border-style: solid; border-width:.1em; border-color:#ddd;}
h2.tweetsvg{margin:0;font-size:15px;font-weight:normal;text-decoration:none;color:rgb(101, 119, 134);} h1.{{ className }}{margin:0;font-size:15px;text-decoration:none;color:#000;}
p.tweetsvg{font-size:1rem; clear:both;} h2.{{ className }}{margin:0;font-size:15px;font-weight:normal;text-decoration:none;color:rgb(101, 119, 134);}
hr.tweetsvg{color:#ddd;} p.{{ className }}{font-size:1rem; clear:both;}
.media-tweetsvg{border-radius:2%; max-width:100%;border-radius: 2%; border-style: solid; border-width: .1em; border-color: #ddd;} hr.{{ className }}{color:#ddd;}
time.tweetsvg{font-size:15px;margin:0;margin-left: 2px;padding-bottom:1rem;color:rgb(101, 119, 134);text-decoration:none;} .media-{{ className }}{border-radius:2%; max-width:100%;border-radius: 2%; border-style: solid; border-width: .1em; border-color: #ddd;}
.tweetsvg.reply{font-size:15px;color:rgb(110, 118, 125);} time.{{ className }}{font-size:15px;margin:0;margin-left: 2px;padding-bottom:1rem;color:rgb(101, 119, 134);text-decoration:none;}
.tweetsvg.footer{display:block;} .{{ className }}.reply{font-size:15px;color:rgb(110, 118, 125);}
.{{ className }}.footer{display:block;}
</style> </style>
<blockquote class="tweetsvg" xmlns="http://www.w3.org/1999/xhtml"> <blockquote class="{{ className }}" xmlns="http://www.w3.org/1999/xhtml">
<a rel="noopener" target="_blank" class="tweetsvg" href="https://twitter.com/{{ .User.ScreenName }}/"><img class="avatar-tweetsvg" alt="" src="data:image/jpeg;base64,{{ base64 .User.ProfileImageUrlHttps }}" /></a> <a rel="noopener" target="_blank" class="{{ className }}" href="https://twitter.com/{{ .User.ScreenName }}/"><img class="avatar-{{ className }}" alt="" src="data:image/jpeg;base64,{{ base64 .User.ProfileImageUrlHttps }}" /></a>
<a rel="noopener" target="_blank" class="tweetsvg" href="https://twitter.com/{{ .User.ScreenName }}/"><h1 class="tweetsvg">{{ .User.Name }}</h1></a> <a rel="noopener" target="_blank" class="{{ className }}" href="https://twitter.com/{{ .User.ScreenName }}/"><h1 class="{{ className }}">{{ .User.Name }}</h1></a>
<a rel="noopener" target="_blank" class="tweetsvg" href="https://twitter.com/{{ .User.ScreenName }}/"><h2 class="tweetsvg">@{{ .User.ScreenName }}</h2></a> <a rel="noopener" target="_blank" class="{{ className }}" href="https://twitter.com/{{ .User.ScreenName }}/"><h2 class="{{ className }}">@{{ .User.ScreenName }}</h2></a>
{{ if .InReplyToScreenName }} {{ if .InReplyToScreenName }}
<p class="tweetsvg reply">Replying to <a rel="noopener" target="_blank" href="https://twitter.com/{{ .InReplyToScreenName }}/">@{{ .InReplyToScreenName }}</a></p> <p class="{{ className }} reply">Replying to <a rel="noopener" target="_blank" href="https://twitter.com/{{ .InReplyToScreenName }}/">@{{ .InReplyToScreenName }}</a></p>
{{ end }} {{ end }}
<p class="tweetsvg text">{{ html .FullText }}</p> <p class="{{ className }} text">{{ html .FullText }}</p>
{{ if .QuotedStatus }}
{{ renderTweet .QuotedStatus }}
{{ end }}
{{ if .ExtendedEntities }} {{ if .ExtendedEntities }}
{{ range .ExtendedEntities.Media }} {{ range .ExtendedEntities.Media }}
<a rel="noopener" target="_blank" href="{{ .Media_url_https }}"><img class="media-tweetsvg" width="{{ .Sizes.Small.W }}" src="data:image/jpeg;base64,{{ base64 .Media_url }}" alt="{{ .ExtAltText }}"/></a> <a rel="noopener" target="_blank" href="{{ .Media_url_https }}"><img class="media-{{ className }}" width="{{ .Sizes.Small.W }}" src="data:image/jpeg;base64,{{ base64 .Media_url }}" alt="{{ .ExtAltText }}"/></a>
{{ end }} {{ end }}
{{ end }} {{ end }}
<a rel="noopener" target="_blank" class="tweetsvg footer" href="https://twitter.com/{{ .User.ScreenName }}/status/{{ .Id }}"> <a rel="noopener" target="_blank" class="{{ className }} footer" href="https://twitter.com/{{ .User.ScreenName }}/status/{{ .Id }}">
<time class="tweetsvg" datetime="{{ isoDate .CreatedAt }}">{{ humanDate .CreatedAt }}</time> <time class="{{ className }}" datetime="{{ isoDate .CreatedAt }}">{{ humanDate .CreatedAt }}</time>
</a> </a>
</blockquote> </blockquote>
</foreignObject> </foreignObject>

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