API structure improvements, convenience funcs

Reviewed-on: #29

config.sample.yaml

@@ -33,5 +33,11 @@ alerting:
   renotify: 30m
 notify:
   - provider: slackwebhook
+#   subjectTemplate: "Stillbox Alert ({{ highest . }})"
+#   bodyTemplate: |
+#     {{ range . -}}
+#     {{ .TGName }} is active with a score of {{ f .Score.Score 4 }}! ({{ f .Score.RecentCount 0 }}/{{ .Score.Count }} recent calls)
+#
+#     {{ end -}}
     config:
       webhookURL: "http://somewhere"

internal/common/common.go

@@ -1,9 +1,6 @@
 package common
 
 import (
-	"fmt"
-	"strconv"
-
 	"github.com/spf13/cobra"
 )
 
@@ -47,10 +44,3 @@ func PtrOrNull[T comparable](val T) *T {
 
 	return &val
 }
-
-func FmtFloat(v float64, places ...int) string {
-	if len(places) > 0 {
-		return fmt.Sprintf("%."+strconv.Itoa(places[0])+"f", v)
-	}
-	return fmt.Sprintf("%.4f", v)
-}

internal/common/template.go

@@ -0,0 +1,48 @@
+package common
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"text/template"
+	"time"
+
+	"dynatron.me/x/stillbox/internal/jsontime"
+)
+
+var (
+	FuncMap = template.FuncMap{
+		"f": fmtFloat,
+		"dict": func(values ...interface{}) (map[string]interface{}, error) {
+			if len(values)%2 != 0 {
+				return nil, errors.New("invalid dict call")
+			}
+			dict := make(map[string]interface{}, len(values)/2)
+			for i := 0; i < len(values); i += 2 {
+				key, ok := values[i].(string)
+				if !ok {
+					return nil, errors.New("dict keys must be strings")
+				}
+				dict[key] = values[i+1]
+			}
+			return dict, nil
+		},
+		"formTime": func(t jsontime.Time) string {
+			return time.Time(t).Format("2006-01-02T15:04")
+		},
+		"ago": func(s string) (string, error) {
+			d, err := time.ParseDuration(s)
+			if err != nil {
+				return "", err
+			}
+			return time.Now().Add(-d).Format("2006-01-02T15:04"), nil
+		},
+	}
+)
+
+func fmtFloat(v float64, places ...int) string {
+	if len(places) > 0 {
+		return fmt.Sprintf("%."+strconv.Itoa(places[0])+"f", v)
+	}
+	return fmt.Sprintf("%.4f", v)
+}

internal/forms/forms.go

@@ -1,6 +1,7 @@
 package forms
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
@@ -18,6 +19,11 @@ import (
 var (
 	ErrNotStruct   = errors.New("destination is not a struct")
 	ErrNotPointer  = errors.New("destination is not a pointer")
+	ErrContentType = errors.New("bad content type")
+)
+
+const (
+	MaxMultipartMemory int64 = 1024 * 1024 // 1MB
 )
 
 type options struct {
@@ -25,6 +31,8 @@ type options struct {
 	parseTimeIn        *time.Location
 	parseLocal         bool
 	acceptBlank        bool
+	maxMultipartMemory int64
+	defaultOmitEmpty   bool
 }
 
 type Option func(*options)
@@ -53,6 +61,18 @@ func WithTag(t string) Option {
 	}
 }
 
+func WithMaxMultipartSize(s int64) Option {
+	return func(o *options) {
+		o.maxMultipartMemory = s
+	}
+}
+
+func WithOmitEmpty() Option {
+	return func(o *options) {
+		o.defaultOmitEmpty = true
+	}
+}
+
 func (o *options) Tag() string {
 	if o.tagOverride != nil {
 		return *o.tagOverride
@@ -147,17 +167,19 @@ func (o *options) parseDuration(s string) (v time.Duration, set bool, err error)
 	return
 }
 
-func (o *options) iterFields(r *http.Request, rv reflect.Value) error {
-	rt := rv.Type()
-	for i := 0; i < rv.NumField(); i++ {
-		f := rv.Field(i)
-		tf := rt.Field(i)
-		if !tf.IsExported() && !tf.Anonymous {
+var typeOfByteSlice = reflect.TypeOf([]byte(nil))
+
+func (o *options) iterFields(r *http.Request, destStruct reflect.Value) error {
+	structType := destStruct.Type()
+	for i := 0; i < destStruct.NumField(); i++ {
+		destFieldVal := destStruct.Field(i)
+		fieldType := structType.Field(i)
+		if !fieldType.IsExported() && !fieldType.Anonymous {
 			continue
 		}
 
-		if f.Kind() == reflect.Struct && tf.Anonymous {
-			err := o.iterFields(r, f)
+		if destFieldVal.Kind() == reflect.Struct && fieldType.Anonymous {
+			err := o.iterFields(r, destFieldVal)
 			if err != nil {
 				return err
 			}
@@ -165,51 +187,38 @@ func (o *options) iterFields(r *http.Request, rv reflect.Value) error {
 
 		var tAr []string
 		var formField string
-		formTag, has := rt.Field(i).Tag.Lookup(o.Tag())
+		var omitEmpty bool
+		if o.defaultOmitEmpty {
+			omitEmpty = true
+		}
+
+		formTag, has := structType.Field(i).Tag.Lookup(o.Tag())
 		if has {
 			tAr = strings.Split(formTag, ",")
 			formField = tAr[0]
+			for _, v := range tAr[1:] {
+				if v == "omitempty" {
+					omitEmpty = true
+					break
 				}
+			}
+		}
+
 		if !has || formField == "-" {
 			continue
 		}
 
-		fi := f.Interface()
+		destFieldIntf := destFieldVal.Interface()
 
-		switch v := fi.(type) {
-		case string, *string:
-			s := r.Form.Get(formField)
-			setVal(f, s != "" || o.acceptBlank, v, s)
-		case int, uint, *int, *uint:
-			ff := r.Form.Get(formField)
-			val, set, err := o.parseInt(ff)
-			if err != nil {
-				return err
-			}
-			setVal(f, set, v, val)
-		case float64:
-			ff := r.Form.Get(formField)
-			val, set, err := o.parseFloat64(ff)
-			if err != nil {
-				return err
-			}
-			setVal(f, set, v, val)
-		case bool, *bool:
-			ff := r.Form.Get(formField)
-			val, set, err := o.parseBool(ff)
-			if err != nil {
-				return err
-			}
-			setVal(f, set, v, val)
-		case []byte:
+		if destFieldVal.Kind() == reflect.Slice && destFieldVal.Type() == typeOfByteSlice {
 			file, hdr, err := r.FormFile(formField)
 			if err != nil {
 				return fmt.Errorf("get form file: %w", err)
 			}
 
-			nameField, hasFilename := rt.Field(i).Tag.Lookup("filenameField")
+			nameField, hasFilename := structType.Field(i).Tag.Lookup("filenameField")
 			if hasFilename {
-				fnf := rv.FieldByName(nameField)
+				fnf := destStruct.FieldByName(nameField)
 				if fnf == (reflect.Value{}) {
 					panic(fmt.Errorf("filenameField '%s' does not exist", nameField))
 				}
@@ -221,23 +230,52 @@ func (o *options) iterFields(r *http.Request, rv reflect.Value) error {
 				return fmt.Errorf("file read: %w", err)
 			}
 
-			f.SetBytes(audioBytes)
+			destFieldVal.SetBytes(audioBytes)
+
+			continue
+		}
+
+		if !r.Form.Has(formField) && omitEmpty {
+			continue
+		}
+
+		ff := r.Form.Get(formField)
+
+		switch v := destFieldIntf.(type) {
+		case string, *string:
+			setVal(destFieldVal, ff != "" || o.acceptBlank, ff)
+		case int, uint, *int, *uint:
+			val, set, err := o.parseInt(ff)
+			if err != nil {
+				return err
+			}
+			setVal(destFieldVal, set, val)
+		case float64:
+			val, set, err := o.parseFloat64(ff)
+			if err != nil {
+				return err
+			}
+			setVal(destFieldVal, set, val)
+		case bool, *bool:
+			val, set, err := o.parseBool(ff)
+			if err != nil {
+				return err
+			}
+			setVal(destFieldVal, set, val)
 		case time.Time, *time.Time, jsontime.Time, *jsontime.Time:
-			tval := r.Form.Get(formField)
-			t, set, err := o.parseTime(tval)
+			t, set, err := o.parseTime(ff)
 			if err != nil {
 				return err
 			}
-			setVal(f, set, v, t)
+			setVal(destFieldVal, set, t)
 		case time.Duration, *time.Duration, jsontime.Duration, *jsontime.Duration:
-			dval := r.Form.Get(formField)
-			d, set, err := o.parseDuration(dval)
+			d, set, err := o.parseDuration(ff)
 			if err != nil {
 				return err
 			}
-			setVal(f, set, v, d)
+			setVal(destFieldVal, set, d)
 		case []int:
-			val := strings.Trim(r.Form.Get(formField), "[]")
+			val := strings.Trim(ff, "[]")
 			if val == "" && o.acceptBlank {
 				continue
 			}
@@ -249,7 +287,7 @@ func (o *options) iterFields(r *http.Request, rv reflect.Value) error {
 					ar = append(ar, i)
 				}
 			}
-			f.Set(reflect.ValueOf(ar))
+			destFieldVal.Set(reflect.ValueOf(ar))
 		default:
 			panic(fmt.Errorf("unsupported type %T", v))
 		}
@@ -258,48 +296,77 @@ func (o *options) iterFields(r *http.Request, rv reflect.Value) error {
 	return nil
 }
 
-func setVal(setField reflect.Value, set bool, fv any, sv any) {
+func setVal(destFieldVal reflect.Value, set bool, src any) {
 	if !set {
 		return
 	}
 
-	rv := reflect.TypeOf(fv)
-	svo := reflect.ValueOf(sv)
+	destType := destFieldVal.Type()
+	srcVal := reflect.ValueOf(src)
 
-	if svo.CanConvert(rv) {
-		svo = svo.Convert(rv)
+	if srcVal.Kind() == reflect.Ptr {
+		srcVal = srcVal.Elem()
 	}
 
-	if rv.Kind() == reflect.Ptr {
-		svo = svo.Addr()
+	if destType.Kind() == reflect.Ptr {
+		if !srcVal.CanAddr() {
+			if srcVal.CanConvert(destType.Elem()) {
+				srcVal = srcVal.Convert(destType.Elem())
+			}
+			copy := reflect.New(srcVal.Type())
+			copy.Elem().Set(srcVal)
+			srcVal = copy
+		}
+	} else if srcVal.CanConvert(destFieldVal.Type()) {
+		srcVal = srcVal.Convert(destFieldVal.Type())
 	}
 
-	setField.Set(svo)
+	destFieldVal.Set(srcVal)
 }
 
 func Unmarshal(r *http.Request, dest any, opt ...Option) error {
-	o := options{}
+	o := options{
+		maxMultipartMemory: MaxMultipartMemory,
+	}
+
 	for _, opt := range opt {
 		opt(&o)
 	}
 
-	rv := reflect.ValueOf(dest)
-	if k := rv.Kind(); k == reflect.Ptr {
-		rv = rv.Elem()
-	} else {
-		return ErrNotPointer
+	contentType := strings.Split(r.Header.Get("Content-Type"), ";")[0]
+
+	switch contentType {
+	case "multipart/form-data":
+		err := r.ParseMultipartForm(o.maxMultipartMemory)
+		if err != nil {
+			return fmt.Errorf("ParseForm: %w", err)
 		}
 
-	if rv.Kind() != reflect.Struct {
-		return ErrNotStruct
-	}
-
-	if strings.HasPrefix(r.Header.Get("Content-Type"), "application/x-www-form-urlencoded") {
+		return o.unmarshalForm(r, dest)
+	case "application/x-www-form-urlencoded":
 		err := r.ParseForm()
 		if err != nil {
 			return fmt.Errorf("ParseForm: %w", err)
 		}
+		return o.unmarshalForm(r, dest)
+	case "application/json":
+		return json.NewDecoder(r.Body).Decode(dest)
 	}
 
-	return o.iterFields(r, rv)
+	return ErrContentType
+}
+
+func (o *options) unmarshalForm(r *http.Request, dest any) error {
+	destVal := reflect.ValueOf(dest)
+	if k := destVal.Kind(); k == reflect.Ptr {
+		destVal = destVal.Elem()
+	} else {
+		return ErrNotPointer
+	}
+
+	if destVal.Kind() != reflect.Struct {
+		return ErrNotStruct
+	}
+
+	return o.iterFields(r, destVal)
 }

internal/forms/forms_test.go

@@ -8,6 +8,7 @@ import (
 	"testing"
 	"time"
 
+	"dynatron.me/x/stillbox/internal/common"
 	"dynatron.me/x/stillbox/internal/forms"
 	"dynatron.me/x/stillbox/internal/jsontime"
 
@@ -54,6 +55,14 @@ type urlEncTestJT struct {
 	ScoreEnd     jsontime.Time     `json:"scoreEnd"`
 }
 
+type ptrTestJT struct {
+	LookbackDays uint               `form:"lookbackDays"`
+	HalfLife     *jsontime.Duration `form:"halfLife"`
+	Recent       *string            `form:"recent"`
+	ScoreStart   *jsontime.Time     `form:"scoreStart"`
+	ScoreEnd     jsontime.Time      `form:"scoreEnd"`
+}
+
 var (
 	UrlEncTest = urlEncTest{
 		LookbackDays: 7,
@@ -69,6 +78,13 @@ var (
 		ScoreStart:   jsontime.Time(time.Date(2024, time.October, 28, 9, 25, 0, 0, time.UTC)),
 	}
 
+	PtrTestJT = ptrTestJT{
+		LookbackDays: 7,
+		HalfLife:     common.PtrTo(jsontime.Duration(30 * time.Minute)),
+		Recent:       common.PtrTo("2h0m0s"),
+		ScoreStart:   common.PtrTo(jsontime.Time(time.Date(2024, time.October, 28, 9, 25, 0, 0, time.UTC))),
+	}
+
 	UrlEncTestJTLocal = urlEncTestJT{
 		LookbackDays: 7,
 		HalfLife:     jsontime.Duration(30 * time.Minute),
@@ -122,7 +138,7 @@ func TestUnmarshal(t *testing.T) {
 		name      string
 		r         *http.Request
 		dest      any
-		compare   any
+		expect    any
 		expectErr error
 		opts      []forms.Option
 	}{
@@ -130,21 +146,21 @@ func TestUnmarshal(t *testing.T) {
 			name:   "base case",
 			r:      makeRequest("call1.http"),
 			dest:   &callUploadRequest{},
-			compare: &Call1,
+			expect: &Call1,
 			opts:   []forms.Option{forms.WithAcceptBlank()},
 		},
 		{
 			name:      "base case no accept blank",
 			r:         makeRequest("call1.http"),
 			dest:      &callUploadRequest{},
-			compare:   &Call1,
+			expect:    &Call1,
 			expectErr: errors.New(`parsebool(''): strconv.ParseBool: parsing "": invalid syntax`),
 		},
 		{
 			name:      "not a pointer",
 			r:         makeRequest("call1.http"),
 			dest:      callUploadRequest{},
-			compare:   callUploadRequest{},
+			expect:    callUploadRequest{},
 			expectErr: forms.ErrNotPointer,
 			opts:      []forms.Option{forms.WithAcceptBlank()},
 		},
@@ -152,7 +168,7 @@ func TestUnmarshal(t *testing.T) {
 			name:      "not a struct",
 			r:         makeRequest("call1.http"),
 			dest:      &str,
-			compare:   callUploadRequest{},
+			expect:    callUploadRequest{},
 			expectErr: forms.ErrNotStruct,
 			opts:      []forms.Option{forms.WithAcceptBlank()},
 		},
@@ -160,21 +176,28 @@ func TestUnmarshal(t *testing.T) {
 			name:      "url encoded",
 			r:         makeRequest("urlenc.http"),
 			dest:      &urlEncTest{},
-			compare:   &UrlEncTest,
+			expect:    &UrlEncTest,
 			expectErr: errors.New(`Could not find format for ""`),
 		},
 		{
 			name:   "url encoded accept blank",
 			r:      makeRequest("urlenc.http"),
 			dest:   &urlEncTest{},
-			compare: &UrlEncTest,
+			expect: &UrlEncTest,
+			opts:   []forms.Option{forms.WithAcceptBlank()},
+		},
+		{
+			name:   "url encoded accept blank pointer",
+			r:      makeRequest("urlenc.http"),
+			dest:   &ptrTestJT{},
+			expect: &PtrTestJT,
 			opts:   []forms.Option{forms.WithAcceptBlank()},
 		},
 		{
 			name:      "url encoded jsontime",
 			r:         makeRequest("urlenc.http"),
 			dest:      &urlEncTestJT{},
-			compare:   &UrlEncTestJT,
+			expect:    &UrlEncTestJT,
 			expectErr: errors.New(`Could not find format for ""`),
 			opts:      []forms.Option{forms.WithTag("json")},
 		},
@@ -182,21 +205,21 @@ func TestUnmarshal(t *testing.T) {
 			name:   "url encoded jsontime with tz",
 			r:      makeRequest("urlenc.http"),
 			dest:   &urlEncTestJT{},
-			compare: &UrlEncTestJT,
+			expect: &UrlEncTestJT,
 			opts:   []forms.Option{forms.WithAcceptBlank(), forms.WithParseTimeInTZ(time.UTC), forms.WithTag("json")},
 		},
 		{
 			name:   "url encoded jsontime with local",
 			r:      makeRequest("urlenc.http"),
 			dest:   &urlEncTestJT{},
-			compare: &UrlEncTestJTLocal,
+			expect: &UrlEncTestJTLocal,
 			opts:   []forms.Option{forms.WithAcceptBlank(), forms.WithParseLocalTime(), forms.WithTag("json")},
 		},
 		{
 			name:   "sim real data",
 			r:      makeRequest("urlenc2.http"),
 			dest:   &alerting.Simulation{},
-			compare: realSim,
+			expect: realSim,
 			opts:   []forms.Option{forms.WithAcceptBlank(), forms.WithParseLocalTime()},
 		},
 	}
@@ -209,7 +232,7 @@ func TestUnmarshal(t *testing.T) {
 				assert.Contains(t, tc.expectErr.Error(), err.Error())
 			} else {
 				require.NoError(t, err)
-				assert.Equal(t, tc.compare, tc.dest)
+				assert.Equal(t, tc.expect, tc.dest)
 			}
 		})
 	}

pkg/alerting/alert/alert.go

@@ -0,0 +1,80 @@
+package alert
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+	"time"
+
+	"dynatron.me/x/stillbox/internal/trending"
+	"dynatron.me/x/stillbox/pkg/database"
+	"dynatron.me/x/stillbox/pkg/talkgroups"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5/pgtype"
+)
+
+type Alert struct {
+	ID         uuid.UUID
+	Timestamp  time.Time
+	TGName     string
+	Score      trending.Score[talkgroups.ID]
+	OrigScore  float64
+	Weight     float32
+	Suppressed bool
+}
+
+func (a *Alert) ToAddAlertParams() database.AddAlertParams {
+	f32score := float32(a.Score.Score)
+	f32origscore := float32(a.OrigScore)
+
+	var origScore *float32
+	if a.Score.Score != a.OrigScore {
+		origScore = &f32origscore
+	}
+
+	return database.AddAlertParams{
+		ID:        a.ID,
+		Time:      pgtype.Timestamptz{Time: a.Timestamp, Valid: true},
+		PackedTg:  a.Score.ID.Pack(),
+		Weight:    &a.Weight,
+		Score:     &f32score,
+		OrigScore: origScore,
+		Notified:  !a.Suppressed,
+	}
+}
+
+// Make creates an alert for later rendering or storage.
+func Make(ctx context.Context, store talkgroups.Store, score trending.Score[talkgroups.ID], origScore float64) (Alert, error) {
+	d := Alert{
+		ID:        uuid.New(),
+		Score:     score,
+		Timestamp: time.Now(),
+		Weight:    1.0,
+		OrigScore: origScore,
+	}
+
+	tgRecord, err := store.TG(ctx, score.ID)
+	switch err {
+	case nil:
+		d.Weight = tgRecord.Talkgroup.Weight
+		if tgRecord.System.Name == "" {
+			tgRecord.System.Name = strconv.Itoa(int(score.ID.System))
+		}
+
+		if tgRecord.Talkgroup.Name != nil {
+			d.TGName = fmt.Sprintf("%s %s [%d]", tgRecord.System.Name, *tgRecord.Talkgroup.Name, score.ID.Talkgroup)
+		} else {
+			d.TGName = fmt.Sprintf("%s:%d", tgRecord.System.Name, int(score.ID.Talkgroup))
+		}
+	default:
+		system, has := store.SystemName(ctx, int(score.ID.System))
+		if has {
+			d.TGName = fmt.Sprintf("%s:%d", system, int(score.ID.Talkgroup))
+		} else {
+			d.TGName = fmt.Sprintf("%d:%d", int(score.ID.System), int(score.ID.Talkgroup))
+		}
+	}
+
+	return d, nil
+}

pkg/alerting/alerting.go

@@ -1,16 +1,14 @@
 package alerting
 
 import (
-	"bytes"
 	"context"
 	"fmt"
 	"net/http"
 	"sort"
-	"strconv"
 	"sync"
-	"text/template"
 	"time"
 
+	"dynatron.me/x/stillbox/pkg/alerting/alert"
 	"dynatron.me/x/stillbox/pkg/calls"
 	"dynatron.me/x/stillbox/pkg/config"
 	"dynatron.me/x/stillbox/pkg/database"
@@ -21,8 +19,6 @@ import (
 	"dynatron.me/x/stillbox/internal/timeseries"
 	"dynatron.me/x/stillbox/internal/trending"
 
-	"github.com/google/uuid"
-	"github.com/jackc/pgx/v5/pgtype"
 	"github.com/rs/zerolog/log"
 )
 
@@ -51,7 +47,7 @@ type alerter struct {
 	scores     trending.Scores[talkgroups.ID]
 	lastScore  time.Time
 	sim        *Simulation
-	alertCache map[talkgroups.ID]Alert
+	alertCache map[talkgroups.ID]alert.Alert
 	renotify   time.Duration
 	notifier   notify.Notifier
 	tgCache    talkgroups.Store
@@ -96,7 +92,7 @@ func New(cfg config.Alerting, tgCache talkgroups.Store, opts ...AlertOption) Ale
 
 	as := &alerter{
 		cfg:        cfg,
-		alertCache: make(map[talkgroups.ID]Alert),
+		alertCache: make(map[talkgroups.ID]alert.Alert),
 		clock:      timeseries.DefaultClock,
 		renotify:   DefaultRenotify,
 		tgCache:    tgCache,
@@ -150,22 +146,18 @@ func (as *alerter) Go(ctx context.Context) {
 
 }
 
-const notificationTemplStr = `{{ range . -}}
-{{ .TGName }} is active with a score of {{ f .Score.Score 4 }}! ({{ f .Score.RecentCount 0 }}/{{ .Score.Count }} recent calls)
-
-{{ end -}}`
-
-var notificationTemplate = template.Must(template.New("notification").Funcs(funcMap).Parse(notificationTemplStr))
-
-func (as *alerter) eval(ctx context.Context, now time.Time, testMode bool) ([]Alert, error) {
+func (as *alerter) eval(ctx context.Context, now time.Time, testMode bool) ([]alert.Alert, error) {
 	err := as.tgCache.Hint(ctx, as.scoredTGs())
 	if err != nil {
 		return nil, fmt.Errorf("prime TG cache: %w", err)
 	}
 
+	as.Lock()
+	defer as.Unlock()
+
 	db := database.FromCtx(ctx)
 
-	var notifications []Alert
+	var notifications []alert.Alert
 	for _, s := range as.scores {
 		origScore := s.Score
 		tgr, err := as.tgCache.TG(ctx, s.ID)
@@ -176,7 +168,7 @@ func (as *alerter) eval(ctx context.Context, now time.Time, testMode bool) ([]Al
 		if s.Score > as.cfg.AlertThreshold || testMode {
 			if old, inCache := as.alertCache[s.ID]; !inCache || now.Sub(old.Timestamp) > as.renotify {
 				s.Score *= as.tgCache.Weight(ctx, s.ID, now)
-				a, err := as.makeAlert(ctx, s, origScore)
+				a, err := alert.Make(ctx, as.tgCache, s, origScore)
 				if err != nil {
 					return nil, fmt.Errorf("makeAlert: %w", err)
 				}
@@ -206,7 +198,7 @@ func (as *alerter) eval(ctx context.Context, now time.Time, testMode bool) ([]Al
 }
 
 func (as *alerter) testNotifyHandler(w http.ResponseWriter, r *http.Request) {
-	alerts := make([]Alert, 0, len(as.scores))
+	alerts := make([]alert.Alert, 0, len(as.scores))
 	ctx := r.Context()
 
 	alerts, err := as.eval(ctx, time.Now(), true)
@@ -216,7 +208,7 @@ func (as *alerter) testNotifyHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	err = as.sendNotification(ctx, alerts)
+	err = as.notifier.Send(ctx, alerts)
 	if err != nil {
 		log.Error().Err(err).Msg("test notification send")
 		http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -258,92 +250,12 @@ func (as *alerter) notify(ctx context.Context) error {
 	}
 
 	if len(notifications) > 0 {
-		return as.sendNotification(ctx, notifications)
+		return as.notifier.Send(ctx, notifications)
 	}
 
 	return nil
 }
 
-type Alert struct {
-	ID         uuid.UUID
-	Timestamp  time.Time
-	TGName     string
-	Score      trending.Score[talkgroups.ID]
-	OrigScore  float64
-	Weight     float32
-	Suppressed bool
-}
-
-func (a *Alert) ToAddAlertParams() database.AddAlertParams {
-	f32score := float32(a.Score.Score)
-	f32origscore := float32(a.OrigScore)
-
-	var origScore *float32
-	if a.Score.Score != a.OrigScore {
-		origScore = &f32origscore
-	}
-
-	return database.AddAlertParams{
-		ID:        a.ID,
-		Time:      pgtype.Timestamptz{Time: a.Timestamp, Valid: true},
-		PackedTg:  a.Score.ID.Pack(),
-		Weight:    &a.Weight,
-		Score:     &f32score,
-		OrigScore: origScore,
-		Notified:  !a.Suppressed,
-	}
-}
-
-// sendNotification renders and sends the notification.
-func (as *alerter) sendNotification(ctx context.Context, n []Alert) error {
-	msgBuffer := new(bytes.Buffer)
-
-	err := notificationTemplate.Execute(msgBuffer, n)
-	if err != nil {
-		return fmt.Errorf("notification template render: %w", err)
-	}
-
-	log.Debug().Str("msg", msgBuffer.String()).Msg("notifying")
-
-	return as.notifier.Send(ctx, NotificationSubject, msgBuffer.String())
-}
-
-// makeAlert creates a notification for later rendering by the template.
-// It takes a talkgroup Score as input.
-func (as *alerter) makeAlert(ctx context.Context, score trending.Score[talkgroups.ID], origScore float64) (Alert, error) {
-	d := Alert{
-		ID:        uuid.New(),
-		Score:     score,
-		Timestamp: time.Now(),
-		Weight:    1.0,
-		OrigScore: origScore,
-	}
-
-	tgRecord, err := as.tgCache.TG(ctx, score.ID)
-	switch err {
-	case nil:
-		d.Weight = tgRecord.Talkgroup.Weight
-		if tgRecord.System.Name == "" {
-			tgRecord.System.Name = strconv.Itoa(int(score.ID.System))
-		}
-
-		if tgRecord.Talkgroup.Name != nil {
-			d.TGName = fmt.Sprintf("%s %s (%d)", tgRecord.System.Name, *tgRecord.Talkgroup.Name, score.ID.Talkgroup)
-		} else {
-			d.TGName = fmt.Sprintf("%s:%d", tgRecord.System.Name, int(score.ID.Talkgroup))
-		}
-	default:
-		system, has := as.tgCache.SystemName(ctx, int(score.ID.System))
-		if has {
-			d.TGName = fmt.Sprintf("%s:%d", system, int(score.ID.Talkgroup))
-		} else {
-			d.TGName = fmt.Sprintf("%d:%d", int(score.ID.System), int(score.ID.Talkgroup))
-		}
-	}
-
-	return d, nil
-}
-
 // cleanCache clears the cache of aged-out entries
 func (as *alerter) cleanCache() {
 	if as.notifier == nil {

pkg/alerting/simulate.go

@@ -2,7 +2,6 @@ package alerting
 
 import (
 	"context"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"net/http"
@@ -114,24 +113,15 @@ func (s *Simulation) Simulate(ctx context.Context) (trending.Scores[talkgroups.I
 func (as *alerter) simulateHandler(w http.ResponseWriter, r *http.Request) {
 	ctx := r.Context()
 	s := new(Simulation)
-	switch r.Header.Get("Content-Type") {
-	case "application/json":
-		err := json.NewDecoder(r.Body).Decode(s)
-		if err != nil {
-			err = fmt.Errorf("simulate decode: %w", err)
-			http.Error(w, err.Error(), http.StatusBadRequest)
-			return
-		}
-	default:
+
 	err := forms.Unmarshal(r, s, forms.WithAcceptBlank(), forms.WithParseLocalTime())
 	if err != nil {
 		err = fmt.Errorf("simulate unmarshal: %w", err)
 		http.Error(w, err.Error(), http.StatusBadRequest)
 		return
 	}
-	}
 
-	err := s.verify()
+	err = s.verify()
 	if err != nil {
 		err = fmt.Errorf("simulation profile verify: %w", err)
 		http.Error(w, err.Error(), http.StatusBadRequest)

pkg/alerting/stats.go

@@ -2,7 +2,6 @@ package alerting
 
 import (
 	_ "embed"
-	"errors"
 	"html/template"
 	"net/http"
 	"time"
@@ -12,7 +11,6 @@ import (
 	"dynatron.me/x/stillbox/pkg/talkgroups"
 
 	"dynatron.me/x/stillbox/internal/common"
-	"dynatron.me/x/stillbox/internal/jsontime"
 	"dynatron.me/x/stillbox/internal/trending"
 
 	"github.com/go-chi/chi/v5"
@@ -22,41 +20,14 @@ import (
 //go:embed stats.html
 var statsTemplateFile string
 
+var (
+	statTmpl = template.Must(template.New("stats").Funcs(common.FuncMap).Parse(statsTemplateFile))
+)
+
 type stats interface {
 	PrivateRoutes(chi.Router)
 }
 
-var (
-	funcMap = template.FuncMap{
-		"f": common.FmtFloat,
-		"dict": func(values ...interface{}) (map[string]interface{}, error) {
-			if len(values)%2 != 0 {
-				return nil, errors.New("invalid dict call")
-			}
-			dict := make(map[string]interface{}, len(values)/2)
-			for i := 0; i < len(values); i += 2 {
-				key, ok := values[i].(string)
-				if !ok {
-					return nil, errors.New("dict keys must be strings")
-				}
-				dict[key] = values[i+1]
-			}
-			return dict, nil
-		},
-		"formTime": func(t jsontime.Time) string {
-			return time.Time(t).Format("2006-01-02T15:04")
-		},
-		"ago": func(s string) (string, error) {
-			d, err := time.ParseDuration(s)
-			if err != nil {
-				return "", err
-			}
-			return time.Now().Add(-d).Format("2006-01-02T15:04"), nil
-		},
-	}
-	statTmpl = template.Must(template.New("stats").Funcs(funcMap).Parse(statsTemplateFile))
-)
-
 func (as *alerter) PrivateRoutes(r chi.Router) {
 	r.Get("/tgstats", as.tgStatsHandler)
 	r.Post("/tgstats", as.simulateHandler)

pkg/api/api.go

@@ -18,13 +18,10 @@ type API interface {
 }
 
 type api struct {
-	tgs talkgroups.Store
 }
 
-func New(tgs talkgroups.Store) API {
-	s := &api{
-		tgs: tgs,
-	}
+func New() API {
+	s := new(api)
 
 	return s
 }
@@ -32,9 +29,8 @@ func New(tgs talkgroups.Store) API {
 func (a *api) Subrouter() http.Handler {
 	r := chi.NewMux()
 
-	r.Get("/talkgroup/{system:\\d+}/{id:\\d+}", a.talkgroup)
-	r.Get("/talkgroup/{system:\\d+}/", a.talkgroup)
-	r.Get("/talkgroup/", a.talkgroup)
+	r.Mount("/talkgroup", new(talkgroupAPI).routes())
+
 	return r
 }
 
@@ -58,7 +54,7 @@ func httpCode(err error) int {
 	return http.StatusInternalServerError
 }
 
-func (a *api) writeResponse(w http.ResponseWriter, r *http.Request, data interface{}, err error) {
+func writeResponse(w http.ResponseWriter, r *http.Request, data interface{}, err error) {
 	if err != nil {
 		log.Error().Str("path", r.URL.Path).Err(err).Msg("request failed")
 		http.Error(w, err.Error(), httpCode(err))
@@ -75,6 +71,10 @@ func (a *api) writeResponse(w http.ResponseWriter, r *http.Request, data interfa
 	}
 }
 
+func reqErr(w http.ResponseWriter, err error, code int) {
+	http.Error(w, err.Error(), code)
+}
+
 func decodeParams(d interface{}, r *http.Request) error {
 	params := chi.RouteContext(r.Context()).URLParams
 	m := make(map[string]string, len(params.Keys))
@@ -96,32 +96,6 @@ func decodeParams(d interface{}, r *http.Request) error {
 	return dec.Decode(m)
 }
 
-func (a *api) badReq(w http.ResponseWriter, err error) {
-	http.Error(w, err.Error(), http.StatusBadRequest)
-}
-
-func (a *api) talkgroup(w http.ResponseWriter, r *http.Request) {
-	ctx := r.Context()
-	p := struct {
-		System *int `param:"system"`
-		ID     *int `param:"id"`
-	}{}
-
-	err := decodeParams(&p, r)
-	if err != nil {
-		a.badReq(w, err)
-		return
-	}
-
-	var res interface{}
-	switch {
-	case p.System != nil && p.ID != nil:
-		res, err = a.tgs.TG(ctx, talkgroups.TG(*p.System, *p.ID))
-	case p.System != nil:
-		res, err = a.tgs.SystemTGs(ctx, int32(*p.System))
-	default:
-		res, err = a.tgs.TGs(ctx, nil)
-	}
-
-	a.writeResponse(w, r, res, err)
+func badReq(w http.ResponseWriter, err error) {
+	reqErr(w, err, http.StatusBadRequest)
 }

pkg/api/talkgroups.go

@@ -0,0 +1,116 @@
+package api
+
+import (
+	"fmt"
+	"net/http"
+
+	"dynatron.me/x/stillbox/internal/forms"
+	"dynatron.me/x/stillbox/pkg/talkgroups"
+
+	"github.com/go-chi/chi/v5"
+)
+
+type talkgroupAPI struct {
+}
+
+func (tga *talkgroupAPI) routes() http.Handler {
+	r := chi.NewMux()
+
+	r.Get("/{system:\\d+}/{id:\\d+}", tga.talkgroup)
+	r.Put("/{system:\\d+}/{id:\\d+}", tga.putTalkgroup)
+	r.Get("/{system:\\d+}/", tga.talkgroup)
+	r.Get("/", tga.talkgroup)
+
+	return r
+}
+
+type tgParams struct {
+	System *int `param:"system"`
+	ID     *int `param:"id"`
+}
+
+func (t tgParams) haveBoth() bool {
+	return t.System != nil && t.ID != nil
+}
+
+func (t tgParams) ToID() talkgroups.ID {
+	nilOr := func(i *int) uint32 {
+		if i == nil {
+			return 0
+		}
+
+		return uint32(*i)
+	}
+
+	return talkgroups.ID{
+		System:    nilOr(t.System),
+		Talkgroup: nilOr(t.ID),
+	}
+}
+
+func (tga *talkgroupAPI) talkgroup(w http.ResponseWriter, r *http.Request) {
+	ctx := r.Context()
+	tgs := talkgroups.StoreFrom(ctx)
+
+	var p tgParams
+
+	err := decodeParams(&p, r)
+	if err != nil {
+		badReq(w, err)
+		return
+	}
+
+	var res interface{}
+	switch {
+	case p.System != nil && p.ID != nil:
+		res, err = tgs.TG(ctx, talkgroups.TG(*p.System, *p.ID))
+	case p.System != nil:
+		res, err = tgs.SystemTGs(ctx, int32(*p.System))
+	default:
+		res, err = tgs.TGs(ctx, nil)
+	}
+
+	writeResponse(w, r, res, err)
+}
+
+func (tga *talkgroupAPI) putTalkgroup(w http.ResponseWriter, r *http.Request) {
+	var id tgParams
+	err := decodeParams(&id, r)
+	if err != nil {
+		badReq(w, err)
+		return
+	}
+	/*
+		ctx := r.Context()
+		tgs := talkgroups.StoreFrom(ctx)
+
+		tg, err := tgs.TG(ctx, id.ToID())
+		switch err {
+		case nil:
+		case talkgroups.ErrNotFound:
+			reqErr(w, err, http.StatusNotFound)
+			return
+		default:
+			reqErr(w, err, http.StatusInternalServerError)
+		}
+	*/
+
+	input := struct {
+		Name        *string  `form:"name"`
+		AlphaTag    *string  `form:"alpha_tag"`
+		TgGroup     *string  `form:"tg_group"`
+		Frequency   *int32   `form:"frequency"`
+		Metadata    []byte   `form:"metadata"`
+		Tags        []string `form:"tags"`
+		Alert       *bool    `form:"alert"`
+		AlertConfig []byte   `form:"alert_config"`
+		Weight      *float32 `form:"weight"`
+	}{}
+
+	err = forms.Unmarshal(r, &input, forms.WithAcceptBlank(), forms.WithOmitEmpty())
+	if err != nil {
+		reqErr(w, err, http.StatusBadRequest)
+		return
+	}
+	fmt.Fprintf(w, "%+v\n", input)
+}

pkg/calls/call.go

@@ -19,7 +19,7 @@ func (d CallDuration) Duration() time.Duration {
 	return time.Duration(d)
 }
 
-func (d CallDuration) Int32Ptr() *int32 {
+func (d CallDuration) MsInt32Ptr() *int32 {
 	if time.Duration(d) == 0 {
 		return nil
 	}
@@ -106,7 +106,7 @@ func (c *Call) ToPB() *pb.Call {
 		Frequencies: toInt64Slice(c.Frequencies),
 		Patches:     toInt32Slice(c.Patches),
 		Sources:     toInt32Slice(c.Sources),
-		Duration:    c.Duration.Int32Ptr(),
+		Duration:    c.Duration.MsInt32Ptr(),
 		Audio:       c.Audio,
 	}
 }

pkg/config/config.go

@@ -65,8 +65,10 @@ type Alerting struct {
 type Notify []NotifyService
 
 type NotifyService struct {
-	Provider string                 `json:"provider"`
-	Config   map[string]interface{} `json:"config"`
+	Provider        string                 `yaml:"provider" json:"provider"`
+	SubjectTemplate *string                `yaml:"subjectTemplate" json:"subjectTemplate"`
+	BodyTemplate    *string                `yaml:"bodyTemplate" json:"bodyTemplate"`
+	Config          map[string]interface{} `yaml:"config" json:"config"`
 }
 
 func (n *NotifyService) GetS(k, defaultVal string) string {

pkg/database/database.go

@@ -58,11 +58,11 @@ func NewClient(ctx context.Context, conf config.DB) (*DB, error) {
 
 type DBCtxKey string
 
-const DBCTXKeyValue DBCtxKey = "dbctx"
+const DBCtxKeyValue DBCtxKey = "dbctx"
 
 // FromCtx returns the database handle from the provided Context.
 func FromCtx(ctx context.Context) *DB {
-	c, ok := ctx.Value(DBCTXKeyValue).(*DB)
+	c, ok := ctx.Value(DBCtxKeyValue).(*DB)
 	if !ok {
 		panic("no DB in context")
 	}
@@ -72,7 +72,7 @@ func FromCtx(ctx context.Context) *DB {
 
 // CtxWithDB returns a Context with the provided database handle.
 func CtxWithDB(ctx context.Context, conn *DB) context.Context {
-	return context.WithValue(ctx, DBCTXKeyValue, conn)
+	return context.WithValue(ctx, DBCtxKeyValue, conn)
 }
 
 // IsNoRows is a convenience function that returns whether a returned error is a database

pkg/notify/notify.go

@@ -1,10 +1,15 @@
 package notify
 
 import (
+	"bytes"
+	"context"
 	"fmt"
 	stdhttp "net/http"
+	"text/template"
 	"time"
 
+	"dynatron.me/x/stillbox/internal/common"
+	"dynatron.me/x/stillbox/pkg/alerting/alert"
 	"dynatron.me/x/stillbox/pkg/config"
 
 	"github.com/go-viper/mapstructure/v2"
@@ -13,15 +18,86 @@ import (
 )
 
 type Notifier interface {
-	notify.Notifier
+	Send(ctx context.Context, alerts []alert.Alert) error
+}
+
+type backend struct {
+	*notify.Notify
+	subject *template.Template
+	body    *template.Template
 }
 
 type notifier struct {
-	*notify.Notify
+	backends []backend
 }
 
-func (n *notifier) buildSlackWebhookPayload(cfg *slackWebhookConfig) func(string, string) any {
+func highest(a []alert.Alert) string {
+	if len(a) < 1 {
+		return "none"
+	}
 
+	top := a[0]
+	for _, a := range a {
+		if a.Score.Score > top.Score.Score {
+			top = a
+		}
+	}
+
+	return top.TGName
+}
+
+var alertFm = template.FuncMap{
+	"highest": highest,
+}
+
+const (
+	defaultBodyTemplStr = `{{ range . -}}
+{{ .TGName }} is active with a score of {{ f .Score.Score 4 }}! ({{ f .Score.RecentCount 0 }}/{{ .Score.Count }} recent calls)
+
+{{ end -}}`
+	defaultSubjectTemplStr = `Stillbox Alert ({{ highest . }})`
+)
+
+var (
+	defaultTemplate *template.Template
+)
+
+func init() {
+	defaultTemplate = template.New("notification")
+	defaultTemplate.Funcs(common.FuncMap).Funcs(alertFm)
+	_, err := defaultTemplate.New("body").Parse(defaultBodyTemplStr)
+	if err != nil {
+		panic(err)
+	}
+
+	_, err = defaultTemplate.New("subject").Parse(defaultSubjectTemplStr)
+	if err != nil {
+		panic(err)
+	}
+}
+
+// Send renders and sends the Alerts.
+func (b *backend) Send(ctx context.Context, alerts []alert.Alert) (err error) {
+	var subject, body bytes.Buffer
+	err = b.subject.ExecuteTemplate(&subject, "subject", alerts)
+	if err != nil {
+		return err
+	}
+
+	err = b.body.ExecuteTemplate(&body, "body", alerts)
+	if err != nil {
+		return err
+	}
+
+	err = b.Notify.Send(ctx, subject.String(), body.String())
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func buildSlackWebhookPayload(cfg *slackWebhookConfig) func(string, string) any {
 	type Attachment struct {
 		Title     string `json:"title"`
 		Text      string `json:"text"`
@@ -56,9 +132,41 @@ type slackWebhookConfig struct {
 	WebhookURL      string `mapstructure:"webhookURL"`
 	Icon            string `mapstructure:"icon"`
 	MessageURL      string `mapstructure:"messageURL"`
+	SubjectTemplate string `mapstructure:"subjectTemplate"`
+	BodyTemplate    string `mapstructure:"bodyTemplate"`
 }
 
-func (n *notifier) addService(cfg config.NotifyService) error {
+func (n *notifier) addService(cfg config.NotifyService) (err error) {
+	be := backend{}
+
+	switch cfg.SubjectTemplate {
+	case nil:
+		be.subject = defaultTemplate.Lookup("subject")
+		if be.subject == nil {
+			panic("subject template nil")
+		}
+	default:
+		be.subject, err = template.New("subject").Funcs(common.FuncMap).Funcs(alertFm).Parse(*cfg.SubjectTemplate)
+		if err != nil {
+			return err
+		}
+	}
+
+	switch cfg.BodyTemplate {
+	case nil:
+		be.body = defaultTemplate.Lookup("body")
+		if be.body == nil {
+			panic("body template nil")
+		}
+	default:
+		be.body, err = template.New("body").Funcs(common.FuncMap).Funcs(alertFm).Parse(*cfg.BodyTemplate)
+		if err != nil {
+			return err
+		}
+	}
+
+	be.Notify = notify.New()
+
 	switch cfg.Provider {
 	case "slackwebhook":
 		swc := &slackWebhookConfig{
@@ -74,20 +182,31 @@ func (n *notifier) addService(cfg config.NotifyService) error {
 			Header:       make(stdhttp.Header),
 			Method:       stdhttp.MethodPost,
 			URL:          swc.WebhookURL,
-			BuildPayload: n.buildSlackWebhookPayload(swc),
+			BuildPayload: buildSlackWebhookPayload(swc),
 		})
-		n.UseServices(hs)
+		be.UseServices(hs)
 	default:
 		return fmt.Errorf("unknown provider '%s'", cfg.Provider)
 	}
 
+	n.backends = append(n.backends, be)
+
+	return nil
+}
+
+func (n *notifier) Send(ctx context.Context, alerts []alert.Alert) error {
+	for _, be := range n.backends {
+		err := be.Send(ctx, alerts)
+		if err != nil {
+			return err
+		}
+	}
+
 	return nil
 }
 
 func New(cfg config.Notify) (Notifier, error) {
-	n := &notifier{
-		Notify: notify.NewWithServices(),
-	}
+	n := new(notifier)
 
 	for _, s := range cfg {
 		err := n.addService(s)

pkg/server/routes.go

@@ -9,6 +9,7 @@ import (
 	"dynatron.me/x/stillbox/internal/version"
 	"dynatron.me/x/stillbox/pkg/config"
 	"dynatron.me/x/stillbox/pkg/database"
+	"dynatron.me/x/stillbox/pkg/talkgroups"
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
 	"github.com/go-chi/httprate"
@@ -26,7 +27,8 @@ func (s *Server) setupRoutes() {
 	}
 
 	r := s.r
-	r.Use(middleware.WithValue(database.DBCTXKeyValue, s.db))
+	r.Use(middleware.WithValue(database.DBCtxKeyValue, s.db))
+	r.Use(middleware.WithValue(talkgroups.StoreCtxKeyValue, s.tgs))
 
 	s.installPprof()
 

pkg/server/server.go

@@ -61,7 +61,7 @@ func New(ctx context.Context, cfg *config.Config) (*Server, error) {
 	}
 
 	tgCache := talkgroups.NewCache()
-	api := api.New(tgCache)
+	api := api.New()
 
 	srv := &Server{
 		auth:     authenticator,

pkg/sinks/database.go

@@ -50,7 +50,7 @@ func (s *DatabaseSink) toAddCallParams(call *calls.Call) database.AddCallParams
 		AudioName:   common.PtrOrNull(call.AudioName),
 		AudioBlob:   call.Audio,
 		AudioType:   common.PtrOrNull(call.AudioType),
-		Duration:    call.Duration.Int32Ptr(),
+		Duration:    call.Duration.MsInt32Ptr(),
 		Frequency:   call.Frequency,
 		Frequencies: call.Frequencies,
 		Patches:     call.Patches,

pkg/talkgroups/cache.go

@@ -49,16 +49,16 @@ type Store interface {
 	HUP(*config.Config)
 }
 
-type CtxStoreKeyT string
+type CtxStoreKey string
 
-const CtxStoreKey CtxStoreKeyT = "store"
+const StoreCtxKeyValue CtxStoreKey = "store"
 
 func CtxWithStore(ctx context.Context, s Store) context.Context {
-	return context.WithValue(ctx, CtxStoreKey, s)
+	return context.WithValue(ctx, StoreCtxKeyValue, s)
 }
 
 func StoreFrom(ctx context.Context) Store {
-	s, ok := ctx.Value(CtxStoreKey).(Store)
+	s, ok := ctx.Value(StoreCtxKeyValue).(Store)
 	if !ok {
 		return NewCache()
 	}
@@ -127,7 +127,7 @@ func (t *cache) add(rec *Talkgroup) error {
 	t.Lock()
 	defer t.Unlock()
 
-	tg := TG(rec.System.ID, int(rec.Talkgroup.Tgid))
+	tg := TG(rec.System.ID, rec.Talkgroup.Tgid)
 	t.tgs[tg] = rec
 	t.systems[int32(rec.System.ID)] = rec.System.Name
 

pkg/talkgroups/talkgroup.go

@@ -12,6 +12,11 @@ type Talkgroup struct {
 	Learned bool            `json:"learned"`
 }
 
+type Names struct {
+	System    string
+	Talkgroup string
+}
+
 type ID struct {
 	System    uint32 `json:"sys"`
 	Talkgroup uint32 `json:"tg"`
@@ -28,7 +33,11 @@ func (ids *IDs) Packed() []int64 {
 	return r
 }
 
-func TG[T int | uint | int64 | uint64 | int32 | uint32](sys, tgid T) ID {
+type intId interface {
+	int | uint | int64 | uint64 | int32 | uint32
+}
+
+func TG[T intId, U intId](sys T, tgid U) ID {
 	return ID{
 		System:    uint32(sys),
 		Talkgroup: uint32(tgid),
@@ -42,14 +51,5 @@ func (t ID) Pack() int64 {
 
 func (t ID) String() string {
 	return fmt.Sprintf("%d:%d", t.System, t.Talkgroup)
-}
 
-func PackedTGs(tg []ID) []int64 {
-	s := make([]int64, len(tg))
-
-	for i, v := range tg {
-		s[i] = v.Pack()
-	}
-
-	return s
 }