appview: make default label defs configurable

hard-coded labels make hard to setup local sandboxed environment as the
appview won't run until we fill all 5 definitions under TangledDid.

so make them configurable with `TANGLED_LABEL_DEFAULTS` which is a list
of aturis delimitted by , character

we can have any number/kind of default labels but gfi is required for
`/good-first-issue` page

Signed-off-by: Seongmin Lee <[e-mail]>

appview/config/config.go

···
 	TurnstileSecretKey string `env:"TURNSTILE_SECRET_KEY"`
 }
 
+type LabelConfig struct {
+	DefaultLabelDefs []string `env:"DEFAULTS"` // delimiter=,
+	GoodFirstIssue   string   `env:"GFI, default=at://did:plc:wshs7t2adsemcrrd4snkeqli/sh.tangled.label.definition/good-first-issue"`
+}
+
 func (cfg RedisConfig) ToURL() string {
 	u := &url.URL{
 		Scheme: "redis",
···
 	Redis         RedisConfig     `env:",prefix=TANGLED_REDIS_"`
 	Pds           PdsConfig       `env:",prefix=TANGLED_PDS_"`
 	Cloudflare    Cloudflare      `env:",prefix=TANGLED_CLOUDFLARE_"`
+	Label         LabelConfig     `env:",prefix=TANGLED_LABEL_"`
 }
 
 func LoadConfig(ctx context.Context) (*Config, error) {

appview/models/label.go

···
 	"github.com/bluesky-social/indigo/atproto/syntax"
 	"github.com/bluesky-social/indigo/xrpc"
 	"tangled.org/core/api/tangled"
-	"tangled.org/core/consts"
 	"tangled.org/core/idresolver"
 )
 
···
 	return result
 }
 
-var (
-	LabelWontfix        = fmt.Sprintf("at://%s/%s/%s", consts.TangledDid, tangled.LabelDefinitionNSID, "wontfix")
-	LabelDuplicate      = fmt.Sprintf("at://%s/%s/%s", consts.TangledDid, tangled.LabelDefinitionNSID, "duplicate")
-	LabelAssignee       = fmt.Sprintf("at://%s/%s/%s", consts.TangledDid, tangled.LabelDefinitionNSID, "assignee")
-	LabelGoodFirstIssue = fmt.Sprintf("at://%s/%s/%s", consts.TangledDid, tangled.LabelDefinitionNSID, "good-first-issue")
-	LabelDocumentation  = fmt.Sprintf("at://%s/%s/%s", consts.TangledDid, tangled.LabelDefinitionNSID, "documentation")
-)
+func FetchLabelDefs(r *idresolver.Resolver, aturis []string) ([]LabelDefinition, error) {
+	var labelDefs []LabelDefinition
+	ctx := context.Background()
 
-func DefaultLabelDefs() []string {
-	return []string{
-		LabelWontfix,
-		LabelDuplicate,
-		LabelAssignee,
-		LabelGoodFirstIssue,
-		LabelDocumentation,
-	}
-}
+	for _, dl := range aturis {
+		atUri, err := syntax.ParseATURI(dl)
+		if err != nil {
+			return nil, fmt.Errorf("failed to parse AT-URI %s: %v", dl, err)
+		}
+		if atUri.Collection() != tangled.LabelDefinitionNSID {
+			return nil, fmt.Errorf("expected AT-URI pointing %s collection: %s", tangled.LabelDefinitionNSID, atUri)
+		}
 
-func FetchDefaultDefs(r *idresolver.Resolver) ([]LabelDefinition, error) {
-	resolved, err := r.ResolveIdent(context.Background(), consts.TangledDid)
-	if err != nil {
-		return nil, fmt.Errorf("failed to resolve tangled.sh DID %s: %v", consts.TangledDid, err)
-	}
-	pdsEndpoint := resolved.PDSEndpoint()
-	if pdsEndpoint == "" {
-		return nil, fmt.Errorf("no PDS endpoint found for tangled.sh DID %s", consts.TangledDid)
-	}
-	client := &xrpc.Client{
-		Host: pdsEndpoint,
-	}
+		owner, err := r.ResolveIdent(ctx, atUri.Authority().String())
+		if err != nil {
+			return nil, fmt.Errorf("failed to resolve default label owner DID %s: %v", atUri.Authority(), err)
+		}
 
-	var labelDefs []LabelDefinition
+		xrpcc := xrpc.Client{
+			Host: owner.PDSEndpoint(),
+		}
 
-	for _, dl := range DefaultLabelDefs() {
-		atUri := syntax.ATURI(dl)
-		parsedUri, err := syntax.ParseATURI(string(atUri))
-		if err != nil {
-			return nil, fmt.Errorf("failed to parse AT-URI %s: %v", atUri, err)
-		}
 		record, err := atproto.RepoGetRecord(
-			context.Background(),
-			client,
+			ctx,
+			&xrpcc,
 			"",
-			parsedUri.Collection().String(),
-			parsedUri.Authority().String(),
-			parsedUri.RecordKey().String(),
+			atUri.Collection().String(),
+			atUri.Authority().String(),
+			atUri.RecordKey().String(),
 		)
 		if err != nil {
 			return nil, fmt.Errorf("failed to get record for %s: %v", atUri, err)
···
 			}
 
 			labelDef, err := LabelDefinitionFromRecord(
-				parsedUri.Authority().String(),
-				parsedUri.RecordKey().String(),
+				atUri.Authority().String(),
+				atUri.RecordKey().String(),
 				labelRecord,
 			)
 			if err != nil {

appview/repo/repo.go

···
 		return
 	}
 
-	defaultLabels, err := db.GetLabelDefinitions(rp.db, db.FilterIn("at_uri", models.DefaultLabelDefs()))
+	defaultLabels, err := db.GetLabelDefinitions(rp.db, db.FilterIn("at_uri", rp.config.Label.DefaultLabelDefs))
 	if err != nil {
 		l.Error("failed to fetch labels", "err", err)
 		rp.pages.Error503(w)
···
 			Source:      sourceAt,
 			Description: f.Repo.Description,
 			Created:     time.Now(),
-			Labels:      models.DefaultLabelDefs(),
+			Labels:      rp.config.Label.DefaultLabelDefs,
 		}
 		record := repo.AsRecord()
 

appview/state/gfi.go

···
 package state
 
 import (
-	"fmt"
 	"log"
 	"net/http"
 	"sort"
 
 	"github.com/bluesky-social/indigo/atproto/syntax"
-	"tangled.org/core/api/tangled"
 	"tangled.org/core/appview/db"
 	"tangled.org/core/appview/models"
 	"tangled.org/core/appview/pages"
···
 
 	page := pagination.FromContext(r.Context())
 
-	goodFirstIssueLabel := fmt.Sprintf("at://%s/%s/%s", consts.TangledDid, tangled.LabelDefinitionNSID, "good-first-issue")
+	goodFirstIssueLabel := s.config.Label.GoodFirstIssue
 
 	gfiLabelDef, err := db.GetLabelDefinition(s.db, db.FilterEq("at_uri", goodFirstIssueLabel))
 	if err != nil {

appview/state/state.go

···
 		return nil, fmt.Errorf("failed to create jetstream client: %w", err)
 	}
 
-	if err := BackfillDefaultDefs(d, res); err != nil {
+	if err := BackfillDefaultDefs(d, res, config.Label.DefaultLabelDefs); err != nil {
 		return nil, fmt.Errorf("failed to backfill default label defs: %w", err)
 	}
 
···
 		return
 	}
 
-	gfiLabel, err := db.GetLabelDefinition(s.db, db.FilterEq("at_uri", models.LabelGoodFirstIssue))
+	gfiLabel, err := db.GetLabelDefinition(s.db, db.FilterEq("at_uri", s.config.Label.GoodFirstIssue))
 	if err != nil {
 		// non-fatal
 	}
···
 			Rkey:        rkey,
 			Description: description,
 			Created:     time.Now(),
-			Labels:      models.DefaultLabelDefs(),
+			Labels:      s.config.Label.DefaultLabelDefs,
 		}
 		record := repo.AsRecord()
 
···
 	return err
 }
 
-func BackfillDefaultDefs(e db.Execer, r *idresolver.Resolver) error {
-	defaults := models.DefaultLabelDefs()
+func BackfillDefaultDefs(e db.Execer, r *idresolver.Resolver, defaults []string) error {
 	defaultLabels, err := db.GetLabelDefinitions(e, db.FilterIn("at_uri", defaults))
 	if err != nil {
 		return err
···
 		return nil
 	}
 
-	labelDefs, err := models.FetchDefaultDefs(r)
+	labelDefs, err := models.FetchLabelDefs(r, defaults)
 	if err != nil {
 		return err
 	}