Performer custom fields (#5487)

* Backend changes
* Show custom field values
* Add custom fields table input
* Add custom field filtering
* Add unit tests
* Include custom fields in import/export
* Anonymise performer custom fields
* Move json.Number handler functions to api
* Handle json.Number conversion in api

pkg/sqlite/custom_fields_test.go

@@ -0,0 +1,176 @@
+//go:build integration
+// +build integration
+
+package sqlite_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stashapp/stash/pkg/models"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSetCustomFields(t *testing.T) {
+	performerIdx := performerIdx1WithScene
+
+	mergeCustomFields := func(i map[string]interface{}) map[string]interface{} {
+		m := getPerformerCustomFields(performerIdx)
+		for k, v := range i {
+			m[k] = v
+		}
+		return m
+	}
+
+	tests := []struct {
+		name     string
+		input    models.CustomFieldsInput
+		expected map[string]interface{}
+		wantErr  bool
+	}{
+		{
+			"valid full",
+			models.CustomFieldsInput{
+				Full: map[string]interface{}{
+					"key": "value",
+				},
+			},
+			map[string]interface{}{
+				"key": "value",
+			},
+			false,
+		},
+		{
+			"valid partial",
+			models.CustomFieldsInput{
+				Partial: map[string]interface{}{
+					"key": "value",
+				},
+			},
+			mergeCustomFields(map[string]interface{}{
+				"key": "value",
+			}),
+			false,
+		},
+		{
+			"valid partial overwrite",
+			models.CustomFieldsInput{
+				Partial: map[string]interface{}{
+					"real": float64(4.56),
+				},
+			},
+			mergeCustomFields(map[string]interface{}{
+				"real": float64(4.56),
+			}),
+			false,
+		},
+		{
+			"leading space full",
+			models.CustomFieldsInput{
+				Full: map[string]interface{}{
+					" key": "value",
+				},
+			},
+			nil,
+			true,
+		},
+		{
+			"trailing space full",
+			models.CustomFieldsInput{
+				Full: map[string]interface{}{
+					"key ": "value",
+				},
+			},
+			nil,
+			true,
+		},
+		{
+			"leading space partial",
+			models.CustomFieldsInput{
+				Partial: map[string]interface{}{
+					" key": "value",
+				},
+			},
+			nil,
+			true,
+		},
+		{
+			"trailing space partial",
+			models.CustomFieldsInput{
+				Partial: map[string]interface{}{
+					"key ": "value",
+				},
+			},
+			nil,
+			true,
+		},
+		{
+			"big key full",
+			models.CustomFieldsInput{
+				Full: map[string]interface{}{
+					"12345678901234567890123456789012345678901234567890123456789012345": "value",
+				},
+			},
+			nil,
+			true,
+		},
+		{
+			"big key partial",
+			models.CustomFieldsInput{
+				Partial: map[string]interface{}{
+					"12345678901234567890123456789012345678901234567890123456789012345": "value",
+				},
+			},
+			nil,
+			true,
+		},
+		{
+			"empty key full",
+			models.CustomFieldsInput{
+				Full: map[string]interface{}{
+					"": "value",
+				},
+			},
+			nil,
+			true,
+		},
+		{
+			"empty key partial",
+			models.CustomFieldsInput{
+				Partial: map[string]interface{}{
+					"": "value",
+				},
+			},
+			nil,
+			true,
+		},
+	}
+
+	// use performer custom fields store
+	store := db.Performer
+	id := performerIDs[performerIdx]
+
+	assert := assert.New(t)
+
+	for _, tt := range tests {
+		runWithRollbackTxn(t, tt.name, func(t *testing.T, ctx context.Context) {
+			err := store.SetCustomFields(ctx, id, tt.input)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("SetCustomFields() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+
+			if tt.wantErr {
+				return
+			}
+
+			actual, err := store.GetCustomFields(ctx, id)
+			if err != nil {
+				t.Errorf("GetCustomFields() error = %v", err)
+				return
+			}
+
+			assert.Equal(tt.expected, actual)
+		})
+	}
+}