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chore: refactor previews into cleaner items
+63
-26
+12
-26
internal/handler/preview.go
+12
-26
internal/handler/preview.go
···
68
68
json.NewEncoder(w).Encode(meta)
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69
return
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}
71
-
// If failed, fallthrough or return error?
72
-
// Fallthrough to generic scrape might not work if Scrape inside GetRedditPreview failed.
73
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// But let's let fallthrough happen just in case.
71
+
} else if strings.Contains(urlParam, "twitter.com") || strings.Contains(urlParam, "x.com") {
72
+
meta, err := h.GetTwitterPreview(urlParam)
73
+
if err == nil {
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+
json.NewEncoder(w).Encode(meta)
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+
return
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+
}
77
+
} else if strings.Contains(urlParam, "youtube.com") || strings.Contains(urlParam, "youtu.be") {
78
+
meta, err := h.GetYouTubePreview(urlParam)
79
+
if err == nil {
80
+
json.NewEncoder(w).Encode(meta)
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+
return
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+
}
74
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}
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// 1. Try OEmbed
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if meta, err := h.tryOEmbed(urlParam); err == nil {
78
-
// For Twitter/X, if successful, we might still want to return empty object to avoid duplicating
79
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// the widget embedded by server-side logic?
80
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// User request implies utilizing OEmbed. If server-side generates a widget, and we generate a card,
81
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// we have duplication.
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// However, returning OEmbed data allows the frontend to optionally replace or augment.
83
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// Current existing logic for Twitter was:
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// "If valid (200), return empty success so frontend keeps the existing embed"
85
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// If we stick to that for Twitter/X ONLY:
86
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if strings.Contains(urlParam, "twitter.com") || strings.Contains(urlParam, "x.com") {
87
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json.NewEncoder(w).Encode(map[string]string{})
88
-
return
89
-
}
90
-
91
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json.NewEncoder(w).Encode(meta)
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return
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}
···
341
337
if u != nil {
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metadata["icon"] = fmt.Sprintf("https://www.google.com/s2/favicons?domain=%s://%s&sz=32", u.Scheme, u.Host)
343
339
}
344
-
}
345
-
346
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// Check for YouTube "soft 404"
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if strings.Contains(targetURL, "youtube.com") || strings.Contains(targetURL, "youtu.be") {
348
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title, hasTitle := metadata["title"]
349
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if !hasTitle || title == " - YouTube" || title == "YouTube" {
350
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// Special handling for caller to know it's a 404
351
-
return nil, fmt.Errorf("status 404")
352
-
}
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metadata["type"] = "video"
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}
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return metadata, nil
+23
internal/handler/preview_twitter.go
+23
internal/handler/preview_twitter.go
···
1
+
package handler
2
+
3
+
import (
4
+
"strings"
5
+
)
6
+
7
+
// GetTwitterPreview handles preview logic for Twitter/X.
8
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// Currently, it leverages the default OEmbed behavior but suppresses the output
9
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// to avoid duplicating the client-side widget if OEmbed is successful.
10
+
func (h *Handler) GetTwitterPreview(targetURL string) (map[string]string, error) {
11
+
// Try OEmbed first
12
+
meta, err := h.tryOEmbed(targetURL)
13
+
if err == nil {
14
+
// Existing logic:
15
+
// "If valid (200), return empty success so frontend keeps the existing embed"
16
+
// If we stick to that for Twitter/X ONLY:
17
+
if strings.Contains(targetURL, "twitter.com") || strings.Contains(targetURL, "x.com") {
18
+
return map[string]string{}, nil
19
+
}
20
+
return meta, nil
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+
}
22
+
return nil, err
23
+
}
+28
internal/handler/preview_youtube.go
+28
internal/handler/preview_youtube.go
···
1
+
package handler
2
+
3
+
import (
4
+
"fmt"
5
+
)
6
+
7
+
// GetYouTubePreview handles preview logic for YouTube.
8
+
// It checks generic OG metadata but includes logic to detect "soft 404s"
9
+
func (h *Handler) GetYouTubePreview(targetURL string) (map[string]string, error) {
10
+
// Default UA
11
+
ua := "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
12
+
13
+
meta, err := h.scrapeOpenGraph(targetURL, ua)
14
+
if err != nil {
15
+
return nil, err
16
+
}
17
+
18
+
// Check for YouTube "soft 404"
19
+
// Extracted from original scrapeOpenGraph
20
+
title, hasTitle := meta["title"]
21
+
if !hasTitle || title == " - YouTube" || title == "YouTube" {
22
+
// Special handling for caller to know it's a 404
23
+
return nil, fmt.Errorf("status 404")
24
+
}
25
+
meta["type"] = "video"
26
+
27
+
return meta, nil
28
+
}