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package ogtags
import (
"net/http"
"net/url"
"time"
"github.com/TecharoHQ/anubis/decaymap"
)
type OGTagCache struct {
cache *decaymap.Impl[string, map[string]string]
target string
ogPassthrough bool
ogTimeToLive time.Duration
approvedTags []string
approvedPrefixes []string
client *http.Client
maxContentLength int64
}
func NewOGTagCache(target string, ogPassthrough bool, ogTimeToLive time.Duration) *OGTagCache {
// Predefined approved tags and prefixes
// In the future, these could come from configuration
defaultApprovedTags := []string{"description", "keywords", "author"}
defaultApprovedPrefixes := []string{"og:", "twitter:", "fediverse:"}
client := &http.Client{
Timeout: 5 * time.Second, /*make this configurable?*/
}
const maxContentLength = 16 << 20 // 16 MiB in bytes
return &OGTagCache{
cache: decaymap.New[string, map[string]string](),
target: target,
ogPassthrough: ogPassthrough,
ogTimeToLive: ogTimeToLive,
approvedTags: defaultApprovedTags,
approvedPrefixes: defaultApprovedPrefixes,
client: client,
maxContentLength: maxContentLength,
}
}
func (c *OGTagCache) getTarget(u *url.URL) string {
return c.target + u.Path
}
func (c *OGTagCache) Cleanup() {
c.cache.Cleanup()
}
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