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import ( "database/sql" "fmt" "log" "strings" "time"
"github.com/bluesky-social/indigo/atproto/syntax" "github.com/ipfs/go-cid" "tangled.org/core/appview/models" "tangled.org/core/appview/pagination" "tangled.org/core/orm")
func AddVouch(e Execer, vouch *models.Vouch) error { // insert if not exists _, err := e.Exec( `insert or ignore into vouches (did, subject_did, cid, kind, reason) values (?, ?, ?, ?, ?)`, vouch.Did, vouch.SubjectDid, vouch.Cid.String(), vouch.Kind, vouch.Reason, ) if err != nil { return err }
// then update _, err = e.Exec( `update vouches set cid = ?, kind = ?, reason = ? where did = ? and subject_did = ?`, vouch.Cid.String(), vouch.Kind, vouch.Reason, vouch.Did, vouch.SubjectDid, ) if err != nil { return err }
// replace evidences: delete all existing, then insert new ones. _, err = e.Exec( `delete from vouch_evidences where vouch_id = (select id from vouches where did = ? and subject_did = ?)`, vouch.Did, vouch.SubjectDid, ) if err != nil { return err } for _, uri := range vouch.Evidences { _, err = e.Exec( `insert into vouch_evidences (vouch_id, at_uri) values ((select id from vouches where did = ? and subject_did = ?), ?)`, vouch.Did, vouch.SubjectDid, uri.String(), ) if err != nil { return err } } return nil}
func GetVouch(e Execer, did, subjectDid string) (*models.Vouch, error) { vouches, err := GetVouches(e, pagination.Page{Limit: 1}, orm.FilterEq("did", did), orm.FilterEq("subject_did", subjectDid), ) if err != nil { return nil, err } if len(vouches) == 0 { return nil, sql.ErrNoRows } return &vouches[0], nil}
func GetVouches(e Execer, page pagination.Page, filters ...orm.Filter) ([]models.Vouch, error) { var conditions []string var args []any for _, filter := range filters { conditions = append(conditions, filter.Condition()) args = append(args, filter.Arg()...) }
whereClause := "" if len(conditions) > 0 { whereClause = "where " + strings.Join(conditions, " and ") }
pageClause := "" if page.Limit > 0 { pageClause = fmt.Sprintf("limit %d offset %d", page.Limit, page.Offset) }
query := fmt.Sprintf( `select did, subject_did, cid, kind, reason, created_at from vouches %s order by created_at desc %s`, whereClause, pageClause)
rows, err := e.Query(query, args...) if err != nil { return nil, err } defer rows.Close()
var vouches []models.Vouch for rows.Next() { var v models.Vouch var cidStr string var createdAt string var reason sql.NullString
if err := rows.Scan(&v.Did, &v.SubjectDid, &cidStr, &v.Kind, &reason, &createdAt); err != nil { log.Println("error scanning vouch:", err) continue }
v.Cid, err = cid.Parse(cidStr) if err != nil { log.Println("unable to parse CID:", err) continue }
t, err := time.Parse(time.RFC3339, createdAt) if err != nil { log.Println("unable to determine created at time") v.CreatedAt = time.Now() } else { v.CreatedAt = t }
if reason.Valid { v.Reason = &reason.String }
vouches = append(vouches, v) } return vouches, nil}
func GetVouchEvidences(e Execer, did, subjectDid string) ([]syntax.ATURI, error) { rows, err := e.Query( `select at_uri from vouch_evidences where vouch_id = (select id from vouches where did = ? and subject_did = ?) order by id asc`, did, subjectDid, ) if err != nil { return nil, err } defer rows.Close()
var evidences []syntax.ATURI for rows.Next() { var uri string if err := rows.Scan(&uri); err != nil { log.Println("error scanning vouch evidence:", err) continue } evidences = append(evidences, syntax.ATURI(uri)) } return evidences, nil}
func DeleteVouch(e Execer, did, subjectDid string) error { _, err := e.Exec(`delete from vouches where did = ? and subject_did = ?`, did, subjectDid) return err}
func DeleteVouchByRkey(e Execer, did, rkey string) error { _, err := e.Exec(`delete from vouches where did = ? and subject_did = ?`, did, rkey) return err}
func CountNetworkVouchTimeline(e Execer, viewerDid, profileDid string) (int, error) { var count int err := e.QueryRow( `select count(*) from ( select v.id from vouches v where ( v.subject_did = ? and v.did in (select subject_did from vouches where did = ? and kind = 'vouch') ) or ( v.did = ? and v.subject_did in (select subject_did from vouches where did = ? and kind = 'vouch') ) group by v.did, v.subject_did )`, profileDid, viewerDid, profileDid, viewerDid, ).Scan(&count) return count, err}
func GetNetworkVouchTimeline(e Execer, viewerDid, profileDid string, page pagination.Page) ([]models.Vouch, error) { pageClause := "" if page.Limit > 0 { pageClause = fmt.Sprintf("limit %d offset %d", page.Limit, page.Offset) }
query := fmt.Sprintf( `select v.did, v.subject_did, v.cid, v.kind, v.reason, v.created_at, group_concat(ve.at_uri, '|') as evidences from vouches v left join vouch_evidences ve on ve.vouch_id = v.id where ( v.subject_did = ? and v.did in (select subject_did from vouches where did = ? and kind = 'vouch') ) or ( v.did = ? and v.subject_did in (select subject_did from vouches where did = ? and kind = 'vouch') ) group by v.did, v.subject_did order by v.created_at desc %s`, pageClause)
rows, err := e.Query(query, profileDid, viewerDid, profileDid, viewerDid) if err != nil { return nil, err } defer rows.Close()
var vouches []models.Vouch for rows.Next() { var v models.Vouch var cidStr string var createdAt string var reason sql.NullString var evidences sql.NullString
if err := rows.Scan(&v.Did, &v.SubjectDid, &cidStr, &v.Kind, &reason, &createdAt, &evidences); err != nil { log.Println("error scanning vouch:", err) continue }
v.Cid, err = cid.Parse(cidStr) if err != nil { log.Println("unable to parse CID:", err) continue }
t, err := time.Parse(time.RFC3339, createdAt) if err != nil { log.Println("unable to determine created at time") v.CreatedAt = time.Now() } else { v.CreatedAt = t }
if reason.Valid { v.Reason = &reason.String }
if evidences.Valid && evidences.String != "" { for _, s := range strings.Split(evidences.String, "|") { v.Evidences = append(v.Evidences, syntax.ATURI(s)) } }
vouches = append(vouches, v) } return vouches, nil}
func GetVouchRelationshipsBatch(e Execer, viewerDid syntax.DID, subjectDids []syntax.DID) (map[syntax.DID]*models.VouchRelationship, error) { if viewerDid == "" { return nil, fmt.Errorf("viewerDid cannot be empty") }
result := make(map[syntax.DID]*models.VouchRelationship) for _, subjectDid := range subjectDids { result[subjectDid] = &models.VouchRelationship{ ViewerDid: viewerDid, SubjectDid: subjectDid, NetworkVouches: []models.Vouch{}, } }
if len(subjectDids) == 0 { return result, nil }
directVouches, err := GetVouches(e, pagination.Page{}, orm.FilterEq("did", viewerDid), orm.FilterIn("subject_did", subjectDids), ) if err != nil { return nil, err } for _, v := range directVouches { if rel, ok := result[v.SubjectDid]; ok { rel.NetworkVouches = append(rel.NetworkVouches, v) } }
networkVouches, err := GetVouches(e, pagination.Page{}, orm.FilterEq("did", viewerDid), orm.FilterEq("kind", string(models.VouchKindVouch)), ) if err != nil { return nil, err }
network := make([]syntax.DID, 0, len(networkVouches)) for _, v := range networkVouches { network = append(network, v.SubjectDid) }
if len(network) > 0 { networkToSubject, err := GetVouches(e, pagination.Page{}, orm.FilterIn("subject_did", subjectDids), orm.FilterIn("did", network), ) if err != nil { return nil, err } for _, v := range networkToSubject { if rel, ok := result[v.SubjectDid]; ok { rel.NetworkVouches = append(rel.NetworkVouches, v) } } }
return result, nil}
func GetVouchRelationship(e Execer, viewerDid, subjectDid syntax.DID) (*models.VouchRelationship, error) { batch, err := GetVouchRelationshipsBatch(e, viewerDid, []syntax.DID{subjectDid}) if err != nil { return nil, err } return batch[subjectDid], nil}
func IsVouchSkipped(e Execer, did, subjectDid string) (bool, error) { var exists bool err := e.QueryRow( `select exists(select 1 from vouch_skips where did = ? and subject_did = ?)`, did, subjectDid, ).Scan(&exists) return exists, err}
func SkipVouchSuggestion(e Execer, did, subjectDid string) error { _, err := e.Exec( `insert or ignore into vouch_skips (did, subject_did) values (?, ?)`, did, subjectDid, ) return err}
// priority:// 1. collaborator invites sent - NOTE with knot-owned events not mentioning *who* is doing the adding of collab, we can't know who to suggest a vouch to.// 2. knot member invites sent// 3. PR authors on FOO's repositories// 4. issue authors on FOO's repositories// 5. PR comment authors on FOO's repositories// 6. issue comment authors on FOO's repositories// 7. users FOO recently followed// 8. owners of repositories FOO recently starredfunc GetVouchSuggestions(e Execer, did string, limit int) ([]models.VouchSuggestion, error) { query := ` select did, reason from ( select subject_did as did, 1 as priority, created, 'You invited this user to collaborate on a repository' as reason from collaborators where collaborators.did = ? and subject_did != ?
union all
select subject as did, 2 as priority, created, 'You invited this user to your knot' as reason from spindle_members where spindle_members.did = ? and subject != ?
union all
select p.owner_did as did, 3 as priority, p.created, 'This user opened a pull request on your repository' as reason from pulls p join repos r on r.repo_did = p.repo_did where r.did = ? and p.owner_did != ?
union all
select i.did as did, 4 as priority, i.created, 'This user opened an issue on your repository' as reason from issues i join repos r on r.repo_did = i.repo_did where r.did = ? and i.did != ?
union all
select c.did as did, 5 as priority, c.created, 'This user commented on a pull request on your repository' as reason from comments c join pulls p on p.at_uri = c.subject_uri join repos r on r.repo_did = p.repo_did where r.did = ? and c.did != ?
union all
select c.did as did, 6 as priority, c.created, 'This user commented on an issue on your repository' as reason from comments c join issues i on i.at_uri = c.subject_uri join repos r on r.repo_did = i.repo_did where r.did = ? and c.did != ?
union all
select f.subject_did as did, 7 as priority, f.created as created, 'You recently followed this user' as reason from follows f where f.did = ? and f.subject_did != ?
union all
select r.did as did, 8 as priority, s.created, 'You recently starred a repository by this user' as reason from stars s join repos r on r.at_uri = s.subject where s.did = ? and r.did != ? ) where did not in ( select subject_did from vouches where vouches.did = ? union select subject_did from vouch_skips where vouch_skips.did = ? ) group by did order by min(priority) asc, max(created) desc limit ? `
args := []any{ did, did, // collaborators did, did, // spindle_members did, did, // pulls did, did, // issues did, did, // pull_comments did, did, // issue_comments did, did, // follows did, did, // stars did, did, // existing vouches + skips exclusion limit, }
rows, err := e.Query(query, args...) if err != nil { return nil, fmt.Errorf("GetVouchSuggestions: %w", err) } defer rows.Close()
var suggestions []models.VouchSuggestion for rows.Next() { var s models.VouchSuggestion if err := rows.Scan(&s.Did, &s.Reason); err != nil { log.Println("error scanning vouch suggestion:", err) continue } suggestions = append(suggestions, s) } return suggestions, nil}