// SPDX-FileCopyrightText: Copyright 2015-2025 go-swagger maintainers
// SPDX-License-Identifier: Apache-2.0

package spec

import (
	"encoding/json"
	"fmt"
	"testing"

	"github.com/go-openapi/testify/v2/assert"
	"github.com/go-openapi/testify/v2/require"
)

//nolint:gochecknoglobals // it's okay to have embedded test fixtures as globals
var (
	specJSON        []byte
	minimalJSONSpec []byte
	miniJSONSpec    []byte
)

func init() { //nolint:gochecknoinits // it's okay to load embedded fixtures in init().
	// load embedded fixtures

	var err error
	specJSON, err = fixtureAssets.ReadFile("fixtures/specs/spec.json")
	if err != nil {
		panic(fmt.Sprintf("could not find fixture: %v", err))
	}

	minimalJSONSpec, err = fixtureAssets.ReadFile("fixtures/specs/minimal_spec.json")
	if err != nil {
		panic(fmt.Sprintf("could not find fixture: %v", err))
	}

	miniJSONSpec, err = fixtureAssets.ReadFile("fixtures/specs/mini_spec.json")
	if err != nil {
		panic(fmt.Sprintf("could not find fixture: %v", err))
	}
}

var spec = Swagger{ //nolint:gochecknoglobals // test fixture
	SwaggerProps: SwaggerProps{
		ID:          "http://localhost:3849/api-docs",
		Swagger:     "2.0",
		Consumes:    []string{"application/json", "application/x-yaml"},
		Produces:    []string{"application/json"},
		Schemes:     []string{"http", "https"},
		Info:        &testInfo,
		Host:        "some.api.out.there",
		BasePath:    "/",
		Paths:       &paths,
		Definitions: map[string]Schema{"Category": {SchemaProps: SchemaProps{Type: []string{"string"}}}},
		Parameters: map[string]Parameter{
			"categoryParam": {ParamProps: ParamProps{Name: "category", In: "query"}, SimpleSchema: SimpleSchema{Type: "string"}},
		},
		Responses: map[string]Response{
			"EmptyAnswer": {
				ResponseProps: ResponseProps{
					Description: "no data to return for this operation",
				},
			},
		},
		SecurityDefinitions: map[string]*SecurityScheme{
			"internalApiKey": APIKeyAuth("api_key", "header"),
		},
		Security: []map[string][]string{
			{"internalApiKey": {}},
		},
		Tags:         []Tag{NewTag("pets", "", nil)},
		ExternalDocs: &ExternalDocumentation{Description: "the name", URL: "the url"},
	},
	VendorExtensible: VendorExtensible{Extensions: map[string]any{
		"x-some-extension": "vendor",
		"x-schemes":        []any{"unix", "amqp"},
	}},
}

// func verifySpecSerialize(specJSON []byte, spec Swagger) {
// 	expected := map[string]interface{}{}
// 	json.Unmarshal(specJSON, &expected)
// 	b, err := json.MarshalIndent(spec, "", "  ")
// 	So(err, ShouldBeNil)
// 	var actual map[string]interface{}
// 	err = json.Unmarshal(b, &actual)
// 	So(err, ShouldBeNil)
// 	compareSpecMaps(actual, expected)
// }

/*
	// assertEquivalent is currently unused
	func assertEquivalent(t testing.TB, actual, expected interface{}) bool {
		if actual == nil || expected == nil || reflect.DeepEqual(actual, expected) {
			return true
		}

		actualType := reflect.TypeOf(actual)
		expectedType := reflect.TypeOf(expected)
		if reflect.TypeOf(actual).ConvertibleTo(expectedType) {
			expectedValue := reflect.ValueOf(expected)
			if typeutil.IsZero(expectedValue) && typeutils.IsZero(reflect.ValueOf(actual)) {
				return true
			}

			// Attempt comparison after type conversion
			if reflect.DeepEqual(actual, expectedValue.Convert(actualType).Interface()) {
				return true
			}
		}

		// Last ditch effort
		if fmt.Sprintf("%#v", expected) == fmt.Sprintf("%#v", actual) {
			return true
		}
		errFmt := "Expected: '%[1]T(%[1]#v)'\nActual:   '%[2]T(%[2]#v)'\n(Should be equivalent)!"
		return assert.Fail(t, errFmt, expected, actual)
	}

	// ShouldBeEquivalentTo is currently unused
	func ShouldBeEquivalentTo(actual interface{}, expecteds ...interface{}) string {
		expected := expecteds[0]
		if actual == nil || expected == nil {
			return ""
		}

		if reflect.DeepEqual(expected, actual) {
			return ""
		}

		actualType := reflect.TypeOf(actual)
		expectedType := reflect.TypeOf(expected)
		if reflect.TypeOf(actual).ConvertibleTo(expectedType) {
			expectedValue := reflect.ValueOf(expected)
			if typeutils.IsZero(expectedValue) && typeutils.IsZero(reflect.ValueOf(actual)) {
				return ""
			}

			// Attempt comparison after type conversion
			if reflect.DeepEqual(actual, expectedValue.Convert(actualType).Interface()) {
				return ""
			}
		}

		// Last ditch effort
		if fmt.Sprintf("%#v", expected) == fmt.Sprintf("%#v", actual) {
			return ""
		}
		errFmt := "Expected: '%[1]T(%[1]#v)'\nActual:   '%[2]T(%[2]#v)'\n(Should be equivalent)!"
		return fmt.Sprintf(errFmt, expected, actual)
	}

	// assertSpecMaps is currently unused
	func assertSpecMaps(t testing.TB, actual, expected map[string]interface{}) bool {
		res := true
		if id, ok := expected["id"]; ok {
			res = assert.Equal(t, id, actual["id"])
		}
		res = res && assert.Equal(t, expected["consumes"], actual["consumes"])
		res = res && assert.Equal(t, expected["produces"], actual["produces"])
		res = res && assert.Equal(t, expected["schemes"], actual["schemes"])
		res = res && assert.Equal(t, expected["swagger"], actual["swagger"])
		res = res && assert.Equal(t, expected["info"], actual["info"])
		res = res && assert.Equal(t, expected["host"], actual["host"])
		res = res && assert.Equal(t, expected["basePath"], actual["basePath"])
		res = res && assert.Equal(t, expected["paths"], actual["paths"])
		res = res && assert.Equal(t, expected["definitions"], actual["definitions"])
		res = res && assert.Equal(t, expected["responses"], actual["responses"])
		res = res && assert.Equal(t, expected["securityDefinitions"], actual["securityDefinitions"])
		res = res && assert.Equal(t, expected["tags"], actual["tags"])
		res = res && assert.Equal(t, expected["externalDocs"], actual["externalDocs"])
		res = res && assert.Equal(t, expected["x-some-extension"], actual["x-some-extension"])
		res = res && assert.Equal(t, expected["x-schemes"], actual["x-schemes"])

		return res
	}
*/

func assertSpecs(t testing.TB, actual, expected Swagger) {
	t.Helper()
	expected.Swagger = "2.0"
	assert.Equal(t, expected, actual)
}

/*
// assertSpecJSON is currently unused
func assertSpecJSON(t testing.TB, specJSON []byte) bool {
	var expected map[string]interface{}
	if !assert.NoError(t, json.Unmarshal(specJSON, &expected)) {
		return false
	}

	obj := Swagger{}
	if !assert.NoError(t, json.Unmarshal(specJSON, &obj)) {
		return false
	}

	cb, err := json.MarshalIndent(obj, "", "  ")
	if assert.NoError(t, err) {
		return false
	}
	var actual map[string]interface{}
	if !assert.NoError(t, json.Unmarshal(cb, &actual)) {
		return false
	}
	return assertSpecMaps(t, expected, actual )
}
*/

func TestSwaggerSpec_Serialize(t *testing.T) {
	expected := make(map[string]any)
	_ = json.Unmarshal(specJSON, &expected)
	b, err := json.MarshalIndent(spec, "", "  ")
	require.NoError(t, err)
	var actual map[string]any
	require.NoError(t, json.Unmarshal(b, &actual))
	assert.Equal(t, expected, actual)
}

func TestSwaggerSpec_Deserialize(t *testing.T) {
	var actual Swagger
	require.NoError(t, json.Unmarshal(specJSON, &actual))
	assert.Equal(t, actual, spec)
}

func TestVendorExtensionStringSlice(t *testing.T) {
	var actual Swagger
	require.NoError(t, json.Unmarshal(specJSON, &actual))
	schemes, ok := actual.Extensions.GetStringSlice("x-schemes")
	require.TrueT(t, ok)
	assert.Equal(t, []string{"unix", "amqp"}, schemes)

	notSlice, ok := actual.Extensions.GetStringSlice("x-some-extension")
	assert.Nil(t, notSlice)
	assert.FalseT(t, ok)

	actual.AddExtension("x-another-ext", 100)
	notString, ok := actual.Extensions.GetStringSlice("x-another-ext")
	assert.Nil(t, notString)
	assert.FalseT(t, ok)

	actual.AddExtension("x-another-slice-ext", []any{100, 100})
	notStringSlice, ok := actual.Extensions.GetStringSlice("x-another-slice-ext")
	assert.Nil(t, notStringSlice)
	assert.FalseT(t, ok)

	_, ok = actual.Extensions.GetStringSlice("x-notfound-ext")
	assert.FalseT(t, ok)
}

func TestOptionalSwaggerProps_Serialize(t *testing.T) {
	var minimalSpec Swagger
	err := json.Unmarshal(miniJSONSpec, &minimalSpec)
	require.NoError(t, err)
	bytes, err := json.Marshal(&minimalSpec)
	require.NoError(t, err)

	var ms map[string]any
	require.NoError(t, json.Unmarshal(bytes, &ms))

	assert.MapNotContainsT(t, ms, "consumes")
	assert.MapNotContainsT(t, ms, "produces")
	assert.MapNotContainsT(t, ms, "schemes")
	assert.MapNotContainsT(t, ms, "host")
	assert.MapNotContainsT(t, ms, "basePath")
	assert.MapNotContainsT(t, ms, "definitions")
	assert.MapNotContainsT(t, ms, "parameters")
	assert.MapNotContainsT(t, ms, "responses")
	assert.MapNotContainsT(t, ms, "securityDefinitions")
	assert.MapNotContainsT(t, ms, "security")
	assert.MapNotContainsT(t, ms, "tags")
	assert.MapNotContainsT(t, ms, "externalDocs")
}

func TestSecurityRequirements(t *testing.T) {
	var minimalSpec Swagger
	require.NoError(t, json.Unmarshal(minimalJSONSpec, &minimalSpec))

	sec := minimalSpec.Paths.Paths["/"].Get.Security
	require.Len(t, sec, 3)
	assert.MapContainsT(t, sec[0], "basic")
	assert.MapContainsT(t, sec[0], "apiKey")
	assert.NotNil(t, sec[1])
	assert.Empty(t, sec[1])
	assert.MapContainsT(t, sec[2], "queryKey")
}

func TestSwaggerGobEncoding(t *testing.T) {
	doTestSwaggerGobEncoding(t, specJSON)

	doTestSwaggerGobEncoding(t, minimalJSONSpec)
}

func doTestSwaggerGobEncoding(t *testing.T, fixture []byte) {
	t.Helper()

	var src, dst Swagger
	require.NoError(t, json.Unmarshal(fixture, &src))

	doTestAnyGobEncoding(t, &src, &dst)
}