PUT talkgroup

Tests pass

Support pointer fields

internal/forms/forms.go

@@ -1,6 +1,7 @@
 package forms
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
@@ -16,15 +17,22 @@ import (
 )
 
 var (
-	ErrNotStruct  = errors.New("destination is not a struct")
-	ErrNotPointer = errors.New("destination is not a pointer")
+	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 {
-	tagOverride *string
-	parseTimeIn *time.Location
-	parseLocal  bool
-	acceptBlank bool
+	tagOverride        *string
+	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]
 
-	if rv.Kind() != reflect.Struct {
-		return ErrNotStruct
-	}
+	switch contentType {
+	case "multipart/form-data":
+		err := r.ParseMultipartForm(o.maxMultipartMemory)
+		if err != nil {
+			return fmt.Errorf("ParseForm: %w", err)
+		}
 
-	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),
@@ -122,29 +138,29 @@ func TestUnmarshal(t *testing.T) {
 		name      string
 		r         *http.Request
 		dest      any
-		compare   any
+		expect    any
 		expectErr error
 		opts      []forms.Option
 	}{
 		{
-			name:    "base case",
-			r:       makeRequest("call1.http"),
-			dest:    &callUploadRequest{},
-			compare: &Call1,
-			opts:    []forms.Option{forms.WithAcceptBlank()},
+			name:   "base case",
+			r:      makeRequest("call1.http"),
+			dest:   &callUploadRequest{},
+			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()},
 		},
@@ -160,44 +176,51 @@ 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,
-			opts:    []forms.Option{forms.WithAcceptBlank()},
+			name:   "url encoded accept blank",
+			r:      makeRequest("urlenc.http"),
+			dest:   &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")},
 		},
 		{
-			name:    "url encoded jsontime with tz",
-			r:       makeRequest("urlenc.http"),
-			dest:    &urlEncTestJT{},
-			compare: &UrlEncTestJT,
-			opts:    []forms.Option{forms.WithAcceptBlank(), forms.WithParseTimeInTZ(time.UTC), forms.WithTag("json")},
+			name:   "url encoded jsontime with tz",
+			r:      makeRequest("urlenc.http"),
+			dest:   &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,
-			opts:    []forms.Option{forms.WithAcceptBlank(), forms.WithParseLocalTime(), forms.WithTag("json")},
+			name:   "url encoded jsontime with local",
+			r:      makeRequest("urlenc.http"),
+			dest:   &urlEncTestJT{},
+			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,
-			opts:    []forms.Option{forms.WithAcceptBlank(), forms.WithParseLocalTime()},
+			name:   "sim real data",
+			r:      makeRequest("urlenc2.http"),
+			dest:   &alerting.Simulation{},
+			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

@@ -44,8 +44,7 @@ func (a *Alert) ToAddAlertParams() database.AddAlertParams {
 	}
 }
 
-// makeAlert creates a notification for later rendering by the template.
-// It takes a talkgroup Score as input.
+// 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(),

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 := 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/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
 }
@@ -32,36 +29,41 @@ 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
 }
 
-var statusMapping = map[error]int{
-	talkgroups.ErrNotFound: http.StatusNotFound,
-	pgx.ErrNoRows:          http.StatusNotFound,
+type errResponse struct {
+	text string
+	code int
 }
 
-func httpCode(err error) int {
+var statusMapping = map[error]errResponse{
+	talkgroups.ErrNotFound: {talkgroups.ErrNotFound.Error(), http.StatusNotFound},
+	pgx.ErrNoRows:          {"no such record", http.StatusNotFound},
+}
+
+func httpCode(err error) (string, int) {
 	c, ok := statusMapping[err]
 	if ok {
-		return c
+		return c.text, c.code
 	}
 
 	for e, c := range statusMapping { // check if err wraps an error we know about
 		if errors.Is(err, e) {
-			return c
+			return c.text, c.code
 		}
 	}
 
-	return http.StatusInternalServerError
+	return err.Error(), 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))
+		text, code := httpCode(err)
+		http.Error(w, text, code)
 		return
 	}
 
@@ -70,11 +72,16 @@ func (a *api) writeResponse(w http.ResponseWriter, r *http.Request, data interfa
 	err = enc.Encode(data)
 	if err != nil {
 		log.Error().Str("path", r.URL.Path).Err(err).Msg("response marshal failed")
-		http.Error(w, err.Error(), httpCode(err))
+		text, code := httpCode(err)
+		http.Error(w, text, code)
 		return
 	}
 }
 
+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 +103,6 @@ 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 +1,107 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"dynatron.me/x/stillbox/internal/forms"
+	"dynatron.me/x/stillbox/pkg/database"
+	"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)
+
+	input := database.UpdateTalkgroupParams{}
+
+	err = forms.Unmarshal(r, &input, forms.WithTag("json"), forms.WithAcceptBlank(), forms.WithOmitEmpty())
+	if err != nil {
+		writeResponse(w, r, nil, err)
+		return
+	}
+	input.ID = id.ToID().Pack()
+
+	record, err := tgs.UpdateTG(ctx, input)
+	if err != nil {
+		writeResponse(w, r, nil, err)
+		return
+	}
+
+	err = json.NewEncoder(w).Encode(record)
+	if err != nil {
+		writeResponse(w, r, nil, err)
+	}
+}

pkg/auth/login.html

@@ -5,7 +5,7 @@
   </head>
   <body>
     <div>
-      <form action="/login" method="POST">
+      <form action="/api/login" method="POST">
         <label for="username">Username: </label>
         <input type="text" name="username" />
         <label for="password">Password: </label>

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/database/extend.go

@@ -9,3 +9,6 @@ func (g GetTalkgroupsWithLearnedRow) GetLearned() bool                   { retur
 func (g GetTalkgroupsWithLearnedBySystemRow) GetTalkgroup() Talkgroup    { return g.Talkgroup }
 func (g GetTalkgroupsWithLearnedBySystemRow) GetSystem() System          { return g.System }
 func (g GetTalkgroupsWithLearnedBySystemRow) GetLearned() bool           { return g.Learned }
+func (g Talkgroup) GetTalkgroup() Talkgroup                              { return g }
+func (g Talkgroup) GetSystem() System                                    { return System{ID: int(g.SystemID)} }
+func (g Talkgroup) GetLearned() bool                                     { return false }

pkg/database/querier.go

@@ -39,6 +39,7 @@ type Querier interface {
 	SetCallTranscript(ctx context.Context, iD uuid.UUID, transcript *string) error
 	SetTalkgroupTags(ctx context.Context, sys int, tg int, tags []string) error
 	UpdatePassword(ctx context.Context, username string, password string) error
+	UpdateTalkgroup(ctx context.Context, arg UpdateTalkgroupParams) (Talkgroup, error)
 }
 
 var _ Querier = (*Queries)(nil)

pkg/database/talkgroups.sql.go

@@ -472,3 +472,63 @@ func (q *Queries) SetTalkgroupTags(ctx context.Context, sys int, tg int, tags []
 	_, err := q.db.Exec(ctx, setTalkgroupTags, sys, tg, tags)
 	return err
 }
+
+const updateTalkgroup = `-- name: UpdateTalkgroup :one
+UPDATE talkgroups
+SET
+	name = COALESCE($1, name),
+	alpha_tag = COALESCE($2, alpha_tag),
+	tg_group = COALESCE($3, tg_group),
+	frequency = COALESCE($4, frequency),
+	metadata = COALESCE($5, metadata),
+	tags = COALESCE($6, tags),
+	alert = COALESCE($7, alert),
+	alert_config = COALESCE($8, alert_config),
+	weight = COALESCE($9, weight)
+WHERE id = $10
+RETURNING id, system_id, tgid, name, alpha_tag, tg_group, frequency, metadata, tags, alert, alert_config, weight
+`
+
+type UpdateTalkgroupParams struct {
+	Name        *string  `json:"name"`
+	AlphaTag    *string  `json:"alpha_tag"`
+	TgGroup     *string  `json:"tg_group"`
+	Frequency   *int32   `json:"frequency"`
+	Metadata    []byte   `json:"metadata"`
+	Tags        []string `json:"tags"`
+	Alert       *bool    `json:"alert"`
+	AlertConfig []byte   `json:"alert_config"`
+	Weight      *float32 `json:"weight"`
+	ID          int64    `json:"id"`
+}
+
+func (q *Queries) UpdateTalkgroup(ctx context.Context, arg UpdateTalkgroupParams) (Talkgroup, error) {
+	row := q.db.QueryRow(ctx, updateTalkgroup,
+		arg.Name,
+		arg.AlphaTag,
+		arg.TgGroup,
+		arg.Frequency,
+		arg.Metadata,
+		arg.Tags,
+		arg.Alert,
+		arg.AlertConfig,
+		arg.Weight,
+		arg.ID,
+	)
+	var i Talkgroup
+	err := row.Scan(
+		&i.ID,
+		&i.SystemID,
+		&i.Tgid,
+		&i.Name,
+		&i.AlphaTag,
+		&i.TgGroup,
+		&i.Frequency,
+		&i.Metadata,
+		&i.Tags,
+		&i.Alert,
+		&i.AlertConfig,
+		&i.Weight,
+	)
+	return i, err
+}

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/talkgroups/cache.go

@@ -17,7 +17,15 @@ import (
 
 type tgMap map[ID]*Talkgroup
 
+var (
+	ErrNotFound     = errors.New("talkgroup not found")
+	ErrNoSuchSystem = errors.New("no such system")
+)
+
 type Store interface {
+	// UpdateTG updates a talkgroup record.
+	UpdateTG(ctx context.Context, input database.UpdateTalkgroupParams) (*Talkgroup, error)
+
 	// TG retrieves a Talkgroup from the Store.
 	TG(ctx context.Context, tg ID) (*Talkgroup, error)
 
@@ -49,16 +57,16 @@ 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()
 	}
@@ -213,8 +221,6 @@ func (t *cache) Load(ctx context.Context, tgs []int64) error {
 	return nil
 }
 
-var ErrNotFound = errors.New("talkgroup not found")
-
 func (t *cache) Weight(ctx context.Context, id ID, tm time.Time) float64 {
 	tg, err := t.TG(ctx, id)
 	if err != nil {
@@ -290,3 +296,23 @@ func (t *cache) SystemName(ctx context.Context, id int) (name string, has bool)
 
 	return n, has
 }
+
+func (t *cache) UpdateTG(ctx context.Context, input database.UpdateTalkgroupParams) (*Talkgroup, error) {
+	sysName, has := t.SystemName(ctx, int(Unpack(input.ID).System))
+	if !has {
+		return nil, ErrNoSuchSystem
+	}
+
+	tg, err := database.FromCtx(ctx).UpdateTalkgroup(ctx, input)
+	if err != nil {
+		return nil, err
+	}
+
+	record := &Talkgroup{
+		Talkgroup: tg,
+		System:    database.System{ID: int(tg.SystemID), Name: sysName},
+	}
+	t.add(record)
+
+	return record, nil
+}

pkg/talkgroups/talkgroup.go

@@ -49,6 +49,13 @@ func (t ID) Pack() int64 {
 	return int64((int64(t.System) << 32) | int64(t.Talkgroup))
 }
 
+func Unpack(id int64) ID {
+	return ID{
+		System:    uint32(id >> 32),
+		Talkgroup: uint32(id & 0xffffffff),
+	}
+}
+
 func (t ID) String() string {
 	return fmt.Sprintf("%d:%d", t.System, t.Talkgroup)
 

sql/postgres/queries/talkgroups.sql

@@ -104,6 +104,20 @@ FROM talkgroups_learned tgl
 JOIN systems sys ON tgl.system_id = sys.id
 WHERE ignored IS NOT TRUE;
 
-
 -- name: GetSystemName :one
 SELECT name FROM systems WHERE id = sqlc.arg(system_id);
+
+-- name: UpdateTalkgroup :one
+UPDATE talkgroups
+SET
+	name = COALESCE(sqlc.narg('name'), name),
+	alpha_tag = COALESCE(sqlc.narg('alpha_tag'), alpha_tag),
+	tg_group = COALESCE(sqlc.narg('tg_group'), tg_group),
+	frequency = COALESCE(sqlc.narg('frequency'), frequency),
+	metadata = COALESCE(sqlc.narg('metadata'), metadata),
+	tags = COALESCE(sqlc.narg('tags'), tags),
+	alert = COALESCE(sqlc.narg('alert'), alert),
+	alert_config = COALESCE(sqlc.narg('alert_config'), alert_config),
+	weight = COALESCE(sqlc.narg('weight'), weight)
+WHERE id = @id
+RETURNING *;