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next.orly.dev/pkg/database/graph-mentions.go
mleku 6b98c23606
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add first draft graph query implementation
2025-12-04 09:28:13 +00:00

92 lines
2.6 KiB
Go

//go:build !(js && wasm)
package database
import (
"lol.mleku.dev/log"
"next.orly.dev/pkg/database/indexes/types"
"git.mleku.dev/mleku/nostr/encoders/hex"
)
// FindMentions finds events that mention a pubkey via p-tags.
// This returns events grouped by depth, where depth represents how the events relate:
// - Depth 1: Events that directly mention the seed pubkey
// - Depth 2+: Not typically used for mentions (reserved for future expansion)
//
// The kinds parameter filters which event kinds to include (e.g., [1] for notes only,
// [1,7] for notes and reactions, etc.)
func (d *D) FindMentions(pubkey []byte, kinds []uint16) (*GraphResult, error) {
result := NewGraphResult()
if len(pubkey) != 32 {
return result, ErrPubkeyNotFound
}
// Get pubkey serial
pubkeySerial, err := d.GetPubkeySerial(pubkey)
if err != nil {
log.D.F("FindMentions: pubkey not in database: %s", hex.Enc(pubkey))
return result, nil
}
// Find all events that reference this pubkey
eventSerials, err := d.GetEventsReferencingPubkey(pubkeySerial, kinds)
if err != nil {
return nil, err
}
// Add each event at depth 1
for _, eventSerial := range eventSerials {
eventIDHex, err := d.GetEventIDFromSerial(eventSerial)
if err != nil {
log.D.F("FindMentions: error getting event ID for serial %d: %v", eventSerial.Get(), err)
continue
}
result.AddEventAtDepth(eventIDHex, 1)
}
log.D.F("FindMentions: found %d events mentioning pubkey %s", result.TotalEvents, hex.Enc(pubkey))
return result, nil
}
// FindMentionsFromHex is a convenience wrapper that accepts hex-encoded pubkey.
func (d *D) FindMentionsFromHex(pubkeyHex string, kinds []uint16) (*GraphResult, error) {
pubkey, err := hex.Dec(pubkeyHex)
if err != nil {
return nil, err
}
return d.FindMentions(pubkey, kinds)
}
// FindMentionsByPubkeys returns events that mention any of the given pubkeys.
// Useful for finding mentions across a set of followed accounts.
func (d *D) FindMentionsByPubkeys(pubkeySerials []*types.Uint40, kinds []uint16) (*GraphResult, error) {
result := NewGraphResult()
seen := make(map[uint64]bool)
for _, pubkeySerial := range pubkeySerials {
eventSerials, err := d.GetEventsReferencingPubkey(pubkeySerial, kinds)
if err != nil {
log.D.F("FindMentionsByPubkeys: error for serial %d: %v", pubkeySerial.Get(), err)
continue
}
for _, eventSerial := range eventSerials {
if seen[eventSerial.Get()] {
continue
}
seen[eventSerial.Get()] = true
eventIDHex, err := d.GetEventIDFromSerial(eventSerial)
if err != nil {
continue
}
result.AddEventAtDepth(eventIDHex, 1)
}
}
return result, nil
}