add show course and map names

cmd/background/main.go

@@ -13,6 +13,7 @@ import (
 	"git.loyso.art/frx/kurious/internal/common/config"
 	"git.loyso.art/frx/kurious/internal/common/xcontext"
 	"git.loyso.art/frx/kurious/internal/common/xlog"
+	"git.loyso.art/frx/kurious/internal/kurious/adapters"
 	"git.loyso.art/frx/kurious/internal/kurious/ports"
 	"git.loyso.art/frx/kurious/internal/kurious/service"
 )
@@ -43,19 +44,39 @@ func app(ctx context.Context) error {
 
 	log := config.NewSLogger(cfg.Log)
 
-	app, err := service.NewApplication(ctx, service.ApplicationConfig{
-		LogConfig: cfg.Log,
-		YDB:       cfg.YDB,
-	})
-	if err != nil {
-		return fmt.Errorf("making new application: %w", err)
-	}
-
 	sravniClient, err := sravni.NewClient(ctx, log, cfg.DebugHTTP)
 	if err != nil {
 		return fmt.Errorf("making sravni client: %w", err)
 	}
 
+	mainPageState, err := sravniClient.GetMainPageState()
+	if err != nil {
+		return fmt.Errorf("getting main page state: %w", err)
+	}
+
+	dictionaries := mainPageState.Props.InitialReduxState.Dictionaries.Data
+
+	dictFieldsAsMap := func(fields ...sravni.Field) map[string]string {
+		out := make(map[string]string, len(fields))
+		for _, field := range fields {
+			out[field.Value] = field.Name
+		}
+		return out
+	}
+
+	courseThematcisMapped := dictFieldsAsMap(dictionaries.CourseThematics.Fields...)
+	learningTypeMapped := dictFieldsAsMap(dictionaries.LearningType.Fields...)
+
+	mapper := adapters.NewMemoryMapper(courseThematcisMapped, learningTypeMapped)
+
+	app, err := service.NewApplication(ctx, service.ApplicationConfig{
+		LogConfig: cfg.Log,
+		YDB:       cfg.YDB,
+	}, mapper)
+	if err != nil {
+		return fmt.Errorf("making new application: %w", err)
+	}
+
 	bgProcess := ports.NewBackgroundProcess(ctx, log)
 	err = bgProcess.RegisterSyncSravniHandler(ctx, app, sravniClient, cfg.SyncSravniCron)
 	if err != nil {

cmd/dev/sravnicli/products.go

@@ -9,7 +9,7 @@ import (
 
 	"git.loyso.art/frx/kurious/internal/common/client/sravni"
 	"git.loyso.art/frx/kurious/internal/common/errors"
-	"git.loyso.art/frx/kurious/internal/common/xslice"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 
 	"github.com/teris-io/cli"
 )
@@ -188,7 +188,7 @@ func (a *productsFilterCountAction) parse(args []string, options map[string]stri
 	filterNotEmpty := func(value string) bool {
 		return value != ""
 	}
-	a.params.courseThematic = xslice.Filter(
+	a.params.courseThematic = xslices.Filter(
 		strings.Split(options[courseThematicOptName], ","),
 		filterNotEmpty,
 	)

cmd/kuriweb/main.go

@@ -10,9 +10,11 @@ import (
 	"os/signal"
 	"time"
 
+	"git.loyso.art/frx/kurious/internal/common/client/sravni"
 	"git.loyso.art/frx/kurious/internal/common/config"
 	"git.loyso.art/frx/kurious/internal/common/generator"
 	"git.loyso.art/frx/kurious/internal/common/xcontext"
+	"git.loyso.art/frx/kurious/internal/kurious/adapters"
 	xhttp "git.loyso.art/frx/kurious/internal/kurious/ports/http"
 	"git.loyso.art/frx/kurious/internal/kurious/service"
 	"golang.org/x/sync/errgroup"
@@ -46,10 +48,35 @@ func app(ctx context.Context) error {
 
 	log := config.NewSLogger(cfg.Log)
 
+	sravniClient, err := sravni.NewClient(ctx, log, false)
+	if err != nil {
+		return fmt.Errorf("unable to make new sravni client: %w", err)
+	}
+
+	mainPageState, err := sravniClient.GetMainPageState()
+	if err != nil {
+		return fmt.Errorf("getting main page state: %w", err)
+	}
+
+	dictionaries := mainPageState.Props.InitialReduxState.Dictionaries.Data
+
+	dictFieldsAsMap := func(fields ...sravni.Field) map[string]string {
+		out := make(map[string]string, len(fields))
+		for _, field := range fields {
+			out[field.Value] = field.Name
+		}
+		return out
+	}
+
+	courseThematcisMapped := dictFieldsAsMap(dictionaries.CourseThematics.Fields...)
+	learningTypeMapped := dictFieldsAsMap(dictionaries.LearningType.Fields...)
+
+	mapper := adapters.NewMemoryMapper(courseThematcisMapped, learningTypeMapped)
+
 	app, err := service.NewApplication(ctx, service.ApplicationConfig{
 		LogConfig: cfg.Log,
 		YDB:       cfg.YDB,
-	})
+	}, mapper)
 	if err != nil {
 		return fmt.Errorf("making new application: %w", err)
 	}

internal/common/client/sravni/client.go

@@ -11,7 +11,7 @@ import (
 	"time"
 
 	"git.loyso.art/frx/kurious/internal/common/errors"
-	"git.loyso.art/frx/kurious/pkg/slices"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 	"git.loyso.art/frx/kurious/pkg/xdefault"
 
 	"github.com/go-resty/resty/v2"
@@ -52,8 +52,8 @@ func NewClient(ctx context.Context, log *slog.Logger, debug bool) (c *client, er
 		return nil, err
 	}
 
-	getQuerySet := func(fields []field) querySet {
+	getQuerySet := func(fields []Field) querySet {
-		items := slices.Map(fields, func(f field) string {
+		items := xslices.Map(fields, func(f Field) string {
 			return f.Value
 		})
 

internal/common/client/sravni/entities.go

@@ -39,7 +39,7 @@ type ReduxMetadata struct {
 	} `json:"data"`
 }
 
-type field struct {
+type Field struct {
 	Name  string `json:"name"`
 	Value string `json:"value"`
 }
@@ -51,7 +51,7 @@ type ReduxDictionaryContainer struct {
 	UserID  string    `json:"userId"`
 	Created time.Time `json:"created"`
 	Updated time.Time `json:"updated"`
-	Fields  []field   `json:"fields"`
+	Fields  []Field   `json:"fields"`
 }
 
 type ReduxDictionaries struct {

internal/common/config/ydb.go

@@ -27,6 +27,7 @@ type YDB struct {
 	DSN              string
 	Auth             YCAuth
 	ShutdownDuration time.Duration
+	DebugYDB         bool
 }
 
 func (ydb *YDB) UnmarshalJSON(data []byte) error {

internal/common/xslices/filter.go

@@ -1,4 +1,4 @@
-package xslice
+package xslices
 
 func Filter[T any](values []T, f func(T) bool) []T {
 	out := make([]T, 0, len(values))

internal/common/xslices/filter_test.go

@@ -1,9 +1,9 @@
-package xslice_test
+package xslices_test
 
 import (
 	"testing"
 
-	"git.loyso.art/frx/kurious/internal/common/xslice"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 )
 
 func TestFilterInplace(t *testing.T) {
@@ -43,7 +43,7 @@ func TestFilterInplace(t *testing.T) {
 	for _, tc := range tt {
 		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
-			gotLen := xslice.FilterInplace(tc.in, tc.check)
+			gotLen := xslices.FilterInplace(tc.in, tc.check)
 			if gotLen != tc.expLen {
 				t.Errorf("exp %d got %d", tc.expLen, gotLen)
 			}

internal/common/xslices/foreach.go

@@ -1,4 +1,4 @@
-package xslice
+package xslices
 
 func ForEach[T any](items []T, f func(T)) {
 	for _, item := range items {

internal/common/xslices/map.go

@@ -1,4 +1,4 @@
-package xslice
+package xslices
 
 func Map[T, U any](in []T, f func(T) U) []U {
 	out := make([]U, len(in))

internal/kurious/adapters/memory_mapper.go

@@ -0,0 +1,21 @@
+package adapters
+
+type inMemoryMapper struct {
+	courseThematicsByID map[string]string
+	learningTypeByID    map[string]string
+}
+
+func NewMemoryMapper(courseThematics, learningType map[string]string) inMemoryMapper {
+	return inMemoryMapper{
+		courseThematicsByID: courseThematics,
+		learningTypeByID:    learningType,
+	}
+}
+
+func (m inMemoryMapper) CourseThematicNameByID(id string) string {
+	return m.courseThematicsByID[id]
+}
+
+func (m inMemoryMapper) LearningTypeNameByID(id string) string {
+	return m.learningTypeByID[id]
+}

internal/kurious/adapters/ydb_course_repository.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"log/slog"
+	"os"
 	"path"
 	"strings"
 	"text/template"
@@ -17,10 +18,12 @@ import (
 	"git.loyso.art/frx/kurious/pkg/xdefault"
 
 	"github.com/ydb-platform/ydb-go-sdk/v3"
+	ydblog "github.com/ydb-platform/ydb-go-sdk/v3/log"
 	"github.com/ydb-platform/ydb-go-sdk/v3/table"
 	"github.com/ydb-platform/ydb-go-sdk/v3/table/options"
 	"github.com/ydb-platform/ydb-go-sdk/v3/table/result/named"
 	"github.com/ydb-platform/ydb-go-sdk/v3/table/types"
+	"github.com/ydb-platform/ydb-go-sdk/v3/trace"
 	yc "github.com/ydb-platform/ydb-go-yc"
 )
 
@@ -69,9 +72,11 @@ func NewYDBConnection(ctx context.Context, cfg config.YDB, log *slog.Logger) (*Y
 			yc.WithServiceAccountKeyFileCredentials(auth.Path),
 		)
 	}
+	if cfg.DebugYDB {
 		opts = append(opts,
-		ydb.WithDialTimeout(time.Second*3),
+			ydb.WithLogger(ydblog.Default(os.Stdout, ydblog.WithMinLevel(ydblog.DEBUG)), trace.DetailsAll),
 		)
+	}
 
 	db, err := ydb.Open(
 		ctx,
@@ -81,6 +86,14 @@ func NewYDBConnection(ctx context.Context, cfg config.YDB, log *slog.Logger) (*Y
 	if err != nil {
 		return nil, fmt.Errorf("opening connection: %w", err)
 	}
+	endpoints, err := db.Discovery().Discover(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("discovering endpoints: %w", err)
+	}
+
+	for _, endpoint := range endpoints {
+		xcontext.LogInfo(ctx, log, "discovered endpoint", slog.String("value", endpoint.Address()))
+	}
 
 	return &YDBConnection{
 		Driver:          db,
@@ -163,11 +176,9 @@ func (r *ydbCourseRepository) List(
 
 	query, err := qtParams.render()
 	if err != nil {
-		return result, fmt.Errorf("rendering: %w", err)
+		return result, fmt.Errorf("rendering query params: %w", err)
 	}
 
-	xcontext.LogInfo(ctx, r.log, "planning to run query", slog.String("query", query), slog.String("opts", tableParamOptsToString(opts...)))
-
 	courses := make([]domain.Course, 0, 1_000)
 	readTx := table.TxControl(
 		table.BeginTx(
@@ -176,11 +187,9 @@ func (r *ydbCourseRepository) List(
 		table.CommitTx(),
 	)
 
-	xcontext.LogInfo(ctx, r.log, "executing do")
 	err = r.db.Table().Do(
 		ctx,
 		func(ctx context.Context, s table.Session) error {
-			xcontext.LogInfo(ctx, r.log, "inside do")
 			start := time.Now()
 			defer func() {
 				since := time.Since(start)
@@ -194,8 +203,6 @@ func (r *ydbCourseRepository) List(
 
 			queryParams := table.NewQueryParameters(opts...)
 
-			xcontext.LogDebug(ctx, r.log, "executing")
-
 			_, res, err := s.Execute(
 				ctx, readTx, query, queryParams,
 				options.WithCollectStatsModeBasic(),
@@ -204,14 +211,10 @@ func (r *ydbCourseRepository) List(
 				return fmt.Errorf("executing: %w", err)
 			}
 
-			xcontext.LogDebug(ctx, r.log, "checking")
-
 			if !res.NextResultSet(ctx) || !res.HasNextRow() {
 				return nil
 			}
 
-			xcontext.LogDebug(ctx, r.log, "scanning")
-
 			for res.NextRow() {
 				var cdb courseDB
 				err = res.ScanNamed(cdb.getNamedValues()...)
@@ -393,7 +396,6 @@ func createCourseParamsAsStruct(params domain.CreateCourseParams) types.Value {
 }
 
 func (r *ydbCourseRepository) CreateBatch(ctx context.Context, params ...domain.CreateCourseParams) error {
-	// -- PRAGMA TablePathPrefix("courses");
 	const upsertQuery = `DECLARE $courseData AS List<Struct<
         id: Text,
         external_id: Optional<Text>,
@@ -680,8 +682,8 @@ func mapCourseDB(cdb courseDB) domain.Course {
 		Name:           cdb.Name,
 		SourceType:     st,
 		SourceName:     nullable.NewValuePtr(cdb.SourceName),
-		Thematic:       cdb.CourseThematic,
+		ThematicID:     cdb.CourseThematic,
-		LearningType:   cdb.LearningType,
+		LearningTypeID: cdb.LearningType,
 		OrganizationID: cdb.OrganizationID,
 		OriginLink:     cdb.OriginLink,
 		ImageLink:      cdb.ImageLink,
@@ -738,11 +740,10 @@ WHERE {{ range .Conditions }}{{.}}{{end}}
 
 var querySelect = template.Must(template.New("").Parse(queryTemplateSelect))
 
-func tableParamOptsToString(in ...table.ParameterOption) string {
+// func tableParamOptsToString(in ...table.ParameterOption) string {
-	var sb strings.Builder
+// 	var sb strings.Builder
-	for _, opt := range in {
+// 	for _, opt := range in {
-		sb.WriteString(opt.Name() + "(" + opt.Value().Type().String() + ");")
+// 		sb.WriteString(opt.Name() + "(" + opt.Value().Type().String() + ");")
-	}
+// 	}
-
+// 	return sb.String()
-	return sb.String()
+// }
-}

internal/kurious/app/command/createcourse.go

@@ -8,7 +8,7 @@ import (
 
 	"git.loyso.art/frx/kurious/internal/common/decorator"
 	"git.loyso.art/frx/kurious/internal/common/nullable"
-	"git.loyso.art/frx/kurious/internal/common/xslice"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 	"git.loyso.art/frx/kurious/internal/kurious/domain"
 )
 
@@ -78,7 +78,7 @@ func NewCreateCoursesHandler(
 }
 
 func (h createCoursesHandler) Handle(ctx context.Context, cmd CreateCourses) error {
-	params := xslice.Map(cmd.Courses, func(in CreateCourse) (out domain.CreateCourseParams) {
+	params := xslices.Map(cmd.Courses, func(in CreateCourse) (out domain.CreateCourseParams) {
 		return domain.CreateCourseParams(in)
 	})
 	err := h.repo.CreateBatch(ctx, params...)

internal/kurious/app/query/listcourses.go

@@ -6,6 +6,7 @@ import (
 	"log/slog"
 
 	"git.loyso.art/frx/kurious/internal/common/decorator"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 	"git.loyso.art/frx/kurious/internal/kurious/domain"
 )
 
@@ -24,14 +25,17 @@ type ListCourseHandler decorator.QueryHandler[ListCourse, domain.ListCoursesResu
 
 type listCourseHandler struct {
 	repo   domain.CourseRepository
+	mapper domain.CourseMapper
 }
 
 func NewListCourseHandler(
 	repo domain.CourseRepository,
+	mapper domain.CourseMapper,
 	log *slog.Logger,
 ) ListCourseHandler {
 	h := listCourseHandler{
 		repo:   repo,
+		mapper: mapper,
 	}
 	return decorator.AddQueryDecorators(h, log)
 }
@@ -43,7 +47,6 @@ func (h listCourseHandler) Handle(ctx context.Context, query ListCourse) (out do
 		out.Courses = make([]domain.Course, 0, query.Limit)
 	}
 	for {
-		print("listing")
 		result, err := h.repo.List(ctx, domain.ListCoursesParams{
 			CourseThematic: query.CourseThematic,
 			LearningType:   query.LearningType,
@@ -56,6 +59,13 @@ func (h listCourseHandler) Handle(ctx context.Context, query ListCourse) (out do
 			return out, fmt.Errorf("listing courses: %w", err)
 		}
 
+		result.Courses = xslices.Map(result.Courses, func(in domain.Course) domain.Course {
+			in.LearningType = h.mapper.LearningTypeNameByID(in.LearningTypeID)
+			in.Thematic = h.mapper.CourseThematicNameByID(in.ThematicID)
+
+			return in
+		})
+
 		out.Courses = append(out.Courses, result.Courses...)
 		out.NextPageToken = result.NextPageToken
 

internal/kurious/domain/course.go

@@ -28,8 +28,12 @@ type Course struct {
 	FullPrice float64
 	// Discount for the course.
 	Discount float64
+
 	Thematic   string
+	ThematicID string
+
 	LearningType   string
+	LearningTypeID string
 
 	// Duration for the course. It will be splitted in values like:
 	// full month / full day / full hour.

internal/kurious/domain/mapper.go

@@ -0,0 +1,6 @@
+package domain
+
+type CourseMapper interface {
+	CourseThematicNameByID(string) string
+	LearningTypeNameByID(string) string
+}

internal/kurious/ports/background/synchandler.go

@@ -14,7 +14,7 @@ import (
 	"git.loyso.art/frx/kurious/internal/common/generator"
 	"git.loyso.art/frx/kurious/internal/common/nullable"
 	"git.loyso.art/frx/kurious/internal/common/xcontext"
-	"git.loyso.art/frx/kurious/internal/common/xslice"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 	"git.loyso.art/frx/kurious/internal/kurious/app/command"
 	"git.loyso.art/frx/kurious/internal/kurious/app/query"
 	"git.loyso.art/frx/kurious/internal/kurious/domain"
@@ -126,7 +126,7 @@ func (h *syncSravniHandler) Handle(ctx context.Context) (err error) {
 				return fmt.Errorf("loading educational products: %w", err)
 			}
 
-			xslice.ForEach(buffer, func(c sravni.Course) {
+			xslices.ForEach(buffer, func(c sravni.Course) {
 				c.Learningtype = []string{learningType.Value}
 				c.CourseThematics = []string{courseThematic}
 				courses = append(courses, c)
@@ -155,7 +155,7 @@ func (h *syncSravniHandler) Handle(ctx context.Context) (err error) {
 			continue
 		}
 
-		xslice.ForEach(courses, func(c sravni.Course) {
+		xslices.ForEach(courses, func(c sravni.Course) {
 			h.knownExternalIDs[c.ID] = struct{}{}
 		})
 
@@ -212,7 +212,7 @@ func (h *syncSravniHandler) loadEducationalProducts(ctx context.Context, learnin
 }
 
 func (h *syncSravniHandler) filterByCache(courses []sravni.Course) (toInsert []sravni.Course) {
-	toCut := xslice.FilterInplace(courses, xslice.Not(h.isCached))
+	toCut := xslices.FilterInplace(courses, xslices.Not(h.isCached))
 	return courses[:toCut]
 }
 
@@ -222,7 +222,7 @@ func (h *syncSravniHandler) isCached(course sravni.Course) bool {
 }
 
 func (h *syncSravniHandler) insertValues(ctx context.Context, courses []sravni.Course) error {
-	courseParams := xslice.Map(courses, courseAsCreateCourseParams)
+	courseParams := xslices.Map(courses, courseAsCreateCourseParams)
 	err := h.svc.Commands.InsertCourses.Handle(ctx, command.CreateCourses{
 		Courses: courseParams,
 	})
@@ -249,7 +249,7 @@ func (h *syncSravniHandler) fillCaches(ctx context.Context) error {
 
 	h.knownExternalIDs = make(map[string]struct{}, len(courses))
 
-	xslice.ForEach(courses, func(c domain.Course) {
+	xslices.ForEach(courses, func(c domain.Course) {
 		if !c.ExternalID.Valid() {
 			return
 		}

internal/kurious/ports/http/course.go

@@ -9,7 +9,7 @@ import (
 
 	"git.loyso.art/frx/kurious/internal/common/errors"
 	"git.loyso.art/frx/kurious/internal/common/xcontext"
-	"git.loyso.art/frx/kurious/internal/common/xslice"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 	"git.loyso.art/frx/kurious/internal/kurious/app/command"
 	"git.loyso.art/frx/kurious/internal/kurious/app/query"
 	"git.loyso.art/frx/kurious/internal/kurious/domain"
@@ -90,7 +90,7 @@ type listCoursesTemplateParams struct {
 func mapDomainCourseToTemplate(in ...domain.Course) listCoursesTemplateParams {
 	coursesBySubcategory := make(map[string][]domain.Course, len(in))
 	subcategoriesByCategories := make(map[string]map[string]struct{}, len(in))
-	xslice.ForEach(in, func(c domain.Course) {
+	xslices.ForEach(in, func(c domain.Course) {
 		coursesBySubcategory[c.Thematic] = append(coursesBySubcategory[c.Thematic], c)
 		if _, ok := subcategoriesByCategories[c.LearningType]; !ok {
 			subcategoriesByCategories[c.LearningType] = map[string]struct{}{}
@@ -216,7 +216,7 @@ func (c courseServer) RenderEditDescription(w http.ResponseWriter, r *http.Reque
 func (c courseServer) UpdateCourseDescription(w http.ResponseWriter, r *http.Request) {
 	type requestModel struct {
 		ID   string `json:"-"`
-		Text string `json:"text"`
+		Text string `json:"description"`
 	}
 
 	ctx := r.Context()

internal/kurious/ports/http/listtemplate.go

@@ -9,7 +9,7 @@ import (
 	"path"
 
 	"git.loyso.art/frx/kurious/internal/common/xcontext"
-	"git.loyso.art/frx/kurious/internal/common/xslice"
+	"git.loyso.art/frx/kurious/internal/common/xslices"
 )
 
 const baseTemplatePath = "./internal/kurious/ports/http/templates/"
@@ -22,7 +22,7 @@ func must[T any](t T, err error) T {
 }
 
 func scanFiles() []string {
-	entries := xslice.Map(
+	entries := xslices.Map(
 		must(os.ReadDir(baseTemplatePath)),
 		func(v fs.DirEntry) string {
 			return path.Join(baseTemplatePath, v.Name())

internal/kurious/ports/http/templates/get.tmpl

@@ -9,13 +9,16 @@
     </div>
     <div class="card-content">
       <div class="media-content">
-        <p class="title is-5">{{ .Name }}</p>
+        <p class="title is-5" onclick="location.href='{{ .OriginLink }}'">{{ .Name }}</p>
         <p class="subtitle is-8">{{ .Description }}</p>
       </div>
       <div class="content">
         <p>{{ .FullPrice }} rub.</p>
       </div>
 
+      <button class="button" onclick="location.href='{{ .OriginLink }}'">
+        Show Course
+      </button>
       <button class="button" hx-get="/courses/{{ .ID }}/editdesc">
         Edit description
       </button>
@@ -49,7 +52,7 @@
     <div class="field-body">
       <div class="field">
         <div class="control">
-          <textarea class="textarea" placeholder="Description">{{ .Description }}</textarea>
+          <textarea class="textarea" name="description" placeholder="Description">{{ .Description }}</textarea>
         </div>
       </div>
     </div>
@@ -59,7 +62,7 @@
   </div>
   <div class="field is-grouped">
     <p class="control">
-      <button class="button is-primary is-link" hx-include="closest .control">
+      <button class="button is-primary is-link" hx-include="[name='description']">
         Submit
       </button>
     </p>
@@ -69,8 +72,6 @@
       </button>
     </p>
   </div>
-  <!-- <button class="btn">Submit</button>
-  <button class="btn" hx-get="/courses/{{ .ID }}/short">Cancel</button> -->
 </form>
 {{ end }}
 

internal/kurious/service/service.go

@@ -11,6 +11,7 @@ import (
 	"git.loyso.art/frx/kurious/internal/kurious/app"
 	"git.loyso.art/frx/kurious/internal/kurious/app/command"
 	"git.loyso.art/frx/kurious/internal/kurious/app/query"
+	"git.loyso.art/frx/kurious/internal/kurious/domain"
 )
 
 type ApplicationConfig struct {
@@ -25,7 +26,7 @@ type Application struct {
 	closers []io.Closer
 }
 
-func NewApplication(ctx context.Context, cfg ApplicationConfig) (Application, error) {
+func NewApplication(ctx context.Context, cfg ApplicationConfig, mapper domain.CourseMapper) (Application, error) {
 	log := config.NewSLogger(cfg.LogConfig)
 	ydbConnection, err := adapters.NewYDBConnection(ctx, cfg.YDB, log.With(slog.String("db", "ydb")))
 	if err != nil {
@@ -43,7 +44,7 @@ func NewApplication(ctx context.Context, cfg ApplicationConfig) (Application, er
 		},
 		Queries: app.Queries{
 			GetCourse:   query.NewGetCourseHandler(courseadapter, log),
-			ListCourses: query.NewListCourseHandler(courseadapter, log),
+			ListCourses: query.NewListCourseHandler(courseadapter, mapper, log),
 		},
 	}
 

pkg/slices/map.go

@@ -1,17 +0,0 @@
-package slices
-
-// Map slice from one type to another one.
-func Map[S any, E any](s []S, f func(S) E) []E {
-	out := make([]E, len(s))
-	for i := range s {
-		out[i] = f(s[i])
-	}
-
-	return out
-}
-
-func ForEach[S any](s []S, f func(S)) {
-	for i := range s {
-		f(s[i])
-	}
-}