feat(recommendations): collect demographics and advance age cohorts

services/api/cmd/api/e2e_test.go

@@ -29,6 +29,7 @@ import (
 	"github.com/redis/go-redis/v9"
 	"github.com/stretchr/testify/require"
 
+	"pipu/api/internal/api/gen"
 	"pipu/api/internal/library"
 	"pipu/api/internal/library/meta"
 	"pipu/api/internal/platform/config"
@@ -281,17 +282,41 @@ func TestUserJourney(t *testing.T) {
 
 	// 7½. Онбординг: варианты из библиотеки, выбор сохраняется, второй раз не предлагается.
 	var onb struct {
-		Required bool `json:"required"`
+		Choice   *gen.OnboardingChoice `json:"choice"`
+		Required bool                  `json:"required"`
 		Artists  []struct {
 			ID string `json:"id"`
 		} `json:"artists"`
 	}
 	c.ok("GET", "/api/v1/onboarding", nil, &onb)
 	require.NotEmpty(t, onb.Artists)
-	c.ok("PUT", "/api/v1/me/onboarding", map[string]any{"artist_ids": []string{onb.Artists[0].ID}, "genres": []string{}}, nil)
+	c.ok("PUT", "/api/v1/me/onboarding", map[string]any{"artist_ids": []string{onb.Artists[0].ID}, "genres": []string{}, "gender": "male", "age_group": "13_19", "age_group_year": 1900}, nil)
 	c.ok("GET", "/api/v1/onboarding", nil, &onb)
 	require.False(t, onb.Required)
 
+	require.NotNil(t, onb.Choice)
+	require.Equal(t, gen.Male, *onb.Choice.Gender)
+	require.Equal(t, gen.N1319, *onb.Choice.AgeGroup)
+	require.Greater(t, *onb.Choice.AgeGroupYear, 1900, "client cannot forge the selection year")
+	_, err = pool.Exec(ctx, `UPDATE user_profiles_rec SET onboarding = jsonb_set(onboarding,
+        '{age_group_year}', to_jsonb(EXTRACT(YEAR FROM CURRENT_DATE)::int - 20)) WHERE user_id = $1`, tokens.User.ID)
+	require.NoError(t, err)
+	c.ok("GET", "/api/v1/onboarding", nil, &onb)
+	require.Equal(t, gen.N3039, *onb.Choice.AgeGroup, "13–19 twenty years ago is approximately 30–39 now")
+	originalYear := *onb.Choice.AgeGroupYear
+	c.ok("PUT", "/api/v1/me/onboarding", onb.Choice, nil)
+	c.ok("GET", "/api/v1/onboarding", nil, &onb)
+	require.Equal(t, originalYear, *onb.Choice.AgeGroupYear, "editing tastes preserves the age anchor")
+	require.Equal(t, gen.N3039, *onb.Choice.AgeGroup)
+	c.ok("POST", "/api/v1/admin/users/"+tokens.User.ID+"/reset-recommendations", nil, nil)
+	onb.Choice = nil
+	c.ok("GET", "/api/v1/onboarding", nil, &onb)
+	require.True(t, onb.Required)
+	require.Nil(t, onb.Choice, "all onboarding answers are cleared")
+	c.ok("PUT", "/api/v1/me/onboarding", map[string]any{"artist_ids": []string{}, "genres": []string{}}, nil)
+	c.ok("GET", "/api/v1/onboarding", nil, &onb)
+	require.False(t, onb.Required, "skip is remembered")
+
 	// 8. «Моя волна»: рекомендатель недоступен — запасная волна из библиотеки.
 	var wave struct {
 		SessionID string  `json:"session_id"`