Squashed commit of the following:

commit 0385f973dd53deb01d1718936a0d0c1723d94ea6
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Thu Nov 23 23:21:15 2023 -0400

    Fixes

commit dfb473e
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Tue Nov 21 14:46:55 2023 -0400

    Fixed sonar issues

commit 0ddfc7b
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Tue Nov 21 14:08:51 2023 -0400

    Fixed default value

commit 1eae9e5
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sat Nov 18 21:20:10 2023 -0400

    Updated configuration

commit 32c8543
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sat Nov 4 14:45:47 2023 -0300

    Added more validators

commit cfb3f72
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sat Nov 4 13:46:47 2023 -0300

    Added more validators

commit c6b8906
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sat Nov 4 12:01:24 2023 -0300

    Reorganize validators

commit b2ef4e4
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sat Nov 4 11:33:52 2023 -0300

    Added more validators

commit 837a17e
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sat Nov 4 10:33:20 2023 -0300

    Added more validators

commit 6eeb941
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Fri Nov 3 10:45:26 2023 -0300

    Added more validators

commit f49d179
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Thu Nov 2 22:13:48 2023 -0300

    Added proxy validator

commit 2209fdb
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Mon Oct 30 02:44:49 2023 -0300

    Added object path joining

commit c94139e
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Mon Oct 30 02:11:09 2023 -0300

    Added path validation

commit 1b76ca4
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Mon Oct 30 01:28:45 2023 -0300

    Added schema validation

commit 9ad6465
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sun Oct 29 19:40:03 2023 -0300

    Added tests for validators

commit 9811a93
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Mon Oct 23 10:20:57 2023 -0300

    Added validators draft

commit fcea2e7
Author: Evgeny Abramovich <evg.abramovitch@gmail.com>
Date:   Sun Oct 22 15:39:22 2023 -0300

    Created validation draft

.run/format.run.xml

@@ -0,0 +1,7 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="format" type="CompoundRunConfigurationType">
+    <toRun name="gofmt" type="ShConfigurationType" />
+    <toRun name="gofumpt" type="ShConfigurationType" />
+    <method v="2" />
+  </configuration>
+</component>

.run/go test uncors.run.xml

@@ -0,0 +1,12 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="go test uncors" type="GoTestRunConfiguration" factoryName="Go Test" nameIsGenerated="true">
+    <module name="uncors" />
+    <working_directory value="$PROJECT_DIR$" />
+    <kind value="DIRECTORY" />
+    <package value="github.com/evg4b/uncors" />
+    <directory value="$PROJECT_DIR$" />
+    <filePath value="$PROJECT_DIR$" />
+    <framework value="gotest" />
+    <method v="2" />
+  </configuration>
+</component>

.run/gofmt.run.xml

@@ -0,0 +1,17 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="gofmt" type="ShConfigurationType">
+    <option name="SCRIPT_TEXT" value="gofmt -l -s -w ." />
+    <option name="INDEPENDENT_SCRIPT_PATH" value="true" />
+    <option name="SCRIPT_PATH" value="" />
+    <option name="SCRIPT_OPTIONS" value="" />
+    <option name="INDEPENDENT_SCRIPT_WORKING_DIRECTORY" value="true" />
+    <option name="SCRIPT_WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+    <option name="INDEPENDENT_INTERPRETER_PATH" value="true" />
+    <option name="INTERPRETER_PATH" value="/bin/zsh" />
+    <option name="INTERPRETER_OPTIONS" value="" />
+    <option name="EXECUTE_IN_TERMINAL" value="true" />
+    <option name="EXECUTE_SCRIPT_FILE" value="false" />
+    <envs />
+    <method v="2" />
+  </configuration>
+</component>

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/bmatcuk/doublestar/v4 v4.6.1
 	github.com/go-http-utils/headers v0.0.0-20181008091004-fed159eddc2a
 	github.com/go-playground/validator/v10 v10.16.0
+	github.com/gobuffalo/validate v2.0.4+incompatible
 	github.com/gojuno/minimock/v3 v3.1.3
 	github.com/gorilla/mux v1.8.1
 	github.com/hashicorp/go-version v1.6.0

go.sum

@@ -101,6 +101,8 @@ github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJn
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
 github.com/go-playground/validator/v10 v10.16.0 h1:x+plE831WK4vaKHO/jpgUGsvLKIqRRkz6M78GuJAfGE=
 github.com/go-playground/validator/v10 v10.16.0/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
+github.com/gobuffalo/validate v2.0.4+incompatible h1:ZTxozrIw8qQ5nfhShmc4izjYPTsPhfdXTdhXOd5OS9o=
+github.com/gobuffalo/validate v2.0.4+incompatible/go.mod h1:N+EtDe0J8252BgfzQUChBgfd6L93m9weay53EWFVsMM=
 github.com/gojuno/minimock/v3 v3.1.3 h1:9jakBeOqffZvR9BGBTulphLwiUfiju1w7JspU5eX/fY=
 github.com/gojuno/minimock/v3 v3.1.3/go.mod h1:WylRuaQInND/eg0HqP0/6etOdtv67AIfOgPW1z8QtKU=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=

internal/config/config.go

@@ -18,8 +18,8 @@ const (
 var flags *pflag.FlagSet
 
 type UncorsConfig struct {
-	HTTPPort    int         `mapstructure:"http-port"    validate:"required"`
-	Mappings    Mappings    `mapstructure:"mappings"     validate:"required"`
+	HTTPPort    int         `mapstructure:"http-port"`
+	Mappings    Mappings    `mapstructure:"mappings"`
 	Proxy       string      `mapstructure:"proxy"`
 	Debug       bool        `mapstructure:"debug"`
 	HTTPSPort   int         `mapstructure:"https-port"`
@@ -76,10 +76,6 @@ func LoadConfiguration(viperInstance *viper.Viper, args []string) *UncorsConfig
 		configuration.IsHTTPSEnabled(),
 	)
 
-	if err := Validate(configuration); err != nil {
-		panic(err)
-	}
-
 	return configuration
 }
 
@@ -89,7 +85,7 @@ func defineFlags() {
 	flags.StringSliceP("to", "t", []string{}, "Target host with protocol for to the resource to be proxy")
 	flags.StringSliceP("from", "f", []string{}, "Local host with protocol for to the resource from which proxying will take place") //nolint: lll
 	flags.UintP("http-port", "p", defaultHTTPPort, "Local HTTP listening port")
-	flags.UintP("https-port", "s", defaultHTTPSPort, "Local HTTPS listening port")
+	flags.UintP("https-port", "s", 0, "Local HTTPS listening port")
 	flags.String("cert-file", "", "Path to HTTPS certificate file")
 	flags.String("key-file", "", "Path to matching for certificate private key")
 	flags.String("proxy", "", "HTTP/HTTPS proxy to provide requests to real server (used system by default)")

internal/config/config_test.go

@@ -95,9 +95,8 @@ func TestLoadConfiguration(t *testing.T) {
 				name: "return default config",
 				args: []string{},
 				expected: &config.UncorsConfig{
-					HTTPPort:  80,
-					HTTPSPort: 443,
-					Mappings:  config.Mappings{},
+					HTTPPort: 80,
+					Mappings: config.Mappings{},
 					CacheConfig: config.CacheConfig{
 						ExpirationTime: config.DefaultExpirationTime,
 						ClearTime:      config.DefaultClearTime,
@@ -109,8 +108,7 @@ func TestLoadConfiguration(t *testing.T) {
 				name: "minimal config is set",
 				args: []string{params.Config, minimalConfigPath},
 				expected: &config.UncorsConfig{
-					HTTPPort:  8080,
-					HTTPSPort: 443,
+					HTTPPort: 8080,
 					Mappings: config.Mappings{
 						{From: hosts.Localhost.HTTPPort(8080), To: hosts.Github.HTTPS()},
 					},

internal/config/mock.go

@@ -24,7 +24,12 @@ func (m *Mock) Clone() Mock {
 }
 
 func (m *Mock) String() string {
-	return helpers.Sprintf("[%s %d] %s", m.Method, m.Response.Code, m.Path)
+	method := "*"
+	if m.Method != "" {
+		method = m.Method
+	}
+
+	return helpers.Sprintf("[%s %d] %s", method, m.Response.Code, m.Path)
 }
 
 type Mocks []Mock

internal/config/validators/base/directory.go

@@ -0,0 +1,44 @@
+package base
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/evg4b/uncors/internal/helpers"
+	"github.com/gobuffalo/validate"
+	"github.com/spf13/afero"
+)
+
+type DirectoryValidator struct {
+	Field string
+	Value string
+	Fs    afero.Fs
+}
+
+func (f *DirectoryValidator) IsValid(errors *validate.Errors) {
+	if f.Value == "" {
+		errors.Add(f.Field, fmt.Sprintf("%s must not be empty", f.Field))
+
+		return
+	}
+
+	helpers.PassedOrOsFs(&f.Fs)
+
+	stat, err := f.Fs.Stat(f.Value)
+	if err != nil {
+		switch {
+		case os.IsNotExist(err):
+			errors.Add(f.Field, fmt.Sprintf("%s directory does not exist", f.Field))
+		case os.IsPermission(err):
+			errors.Add(f.Field, fmt.Sprintf("%s directory is not accessible", f.Field))
+		default:
+			errors.Add(f.Field, fmt.Sprintf("%s is not a directory", f.Field))
+		}
+
+		return
+	}
+
+	if !stat.IsDir() {
+		errors.Add(f.Field, fmt.Sprintf("%s is not a directory", f.Field))
+	}
+}

internal/config/validators/base/directory_test.go

@@ -0,0 +1,67 @@
+package base_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/evg4b/uncors/internal/config/validators/base"
+	"github.com/evg4b/uncors/testing/testutils"
+	"github.com/gobuffalo/validate"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestDirectoryValidator(t *testing.T) {
+	const field = "test"
+	const path = "/demo"
+
+	fs := testutils.FsFromMap(t, map[string]string{
+		"file.go": "package validators",
+	})
+	testutils.CheckNoError(t, fs.Mkdir(path, 0o755))
+
+	t.Run("should not register error if file error", func(t *testing.T) {
+		errors := validate.Validate(&base.DirectoryValidator{
+			Field: field,
+			Value: path,
+			Fs:    fs,
+		})
+
+		assert.False(t, errors.HasAny())
+	})
+
+	t.Run("should register error for", func(t *testing.T) {
+		tests := []struct {
+			name  string
+			path  string
+			error string
+		}{
+			{
+				name:  "empty path",
+				path:  "",
+				error: "test must not be empty",
+			},
+			{
+				name:  "directory does not exist",
+				path:  "directory_does_not_exist",
+				error: "test directory does not exist",
+			},
+			{
+				name:  "file instead of directory",
+				path:  "file.go",
+				error: "test is not a directory",
+			},
+		}
+		for _, test := range tests {
+			t.Run(test.name, func(t *testing.T) {
+				errors := validate.Validate(&base.DirectoryValidator{
+					Field: field,
+					Value: test.path,
+					Fs:    fs,
+				})
+
+				require.EqualError(t, errors, test.error)
+			})
+		}
+	})
+}

internal/config/validators/base/duration.go

@@ -0,0 +1,34 @@
+package base
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/gobuffalo/validate"
+)
+
+type DurationValidator struct {
+	Field     string
+	Value     time.Duration
+	AllowZero bool
+}
+
+func (d *DurationValidator) IsValid(errors *validate.Errors) {
+	if d.AllowZero {
+		d.validateWithZero(errors)
+	} else {
+		d.validateWithoutZero(errors)
+	}
+}
+
+func (d *DurationValidator) validateWithoutZero(errors *validate.Errors) {
+	if d.Value <= 0 {
+		errors.Add(d.Field, fmt.Sprintf("%s must be greater than 0", d.Field))
+	}
+}
+
+func (d *DurationValidator) validateWithZero(errors *validate.Errors) {
+	if d.Value < 0 {
+		errors.Add(d.Field, fmt.Sprintf("%s must be greater than or equal to 0", d.Field))
+	}
+}