package ginSwagger

import (
	"net/http/httptest"
	"os"
	"testing"

	"github.com/gin-contrib/gzip"
	"github.com/swaggo/swag"

	"github.com/gin-gonic/gin"
	"github.com/stretchr/testify/assert"
	"github.com/swaggo/gin-swagger/swaggerFiles"
)

type mockedSwag struct{}

func (s *mockedSwag) ReadDoc() string {
	return `{
}`
}

func TestWrapHandler(t *testing.T) {
	gin.SetMode(gin.TestMode)
	router := gin.New()

	router.GET("/*any", WrapHandler(swaggerFiles.Handler, URL("https://github.com/swaggo/gin-swagger")))

	w1 := performRequest("GET", "/index.html", router)
	assert.Equal(t, 200, w1.Code)
}

func TestWrapCustomHandler(t *testing.T) {
	gin.SetMode(gin.TestMode)
	router := gin.New()

	router.GET("/*any", CustomWrapHandler(&Config{}, swaggerFiles.Handler))

	w1 := performRequest("GET", "/index.html", router)
	assert.Equal(t, 200, w1.Code)
	assert.Equal(t, w1.Header()["Content-Type"][0], "text/html; charset=utf-8")

	w2 := performRequest("GET", "/doc.json", router)
	assert.Equal(t, 500, w2.Code)

	swag.Register(swag.Name, &mockedSwag{})

	w2 = performRequest("GET", "/doc.json", router)
	assert.Equal(t, 200, w2.Code)

	w3 := performRequest("GET", "/favicon-16x16.png", router)
	assert.Equal(t, 200, w3.Code)
	assert.Equal(t, w3.Header()["Content-Type"][0], "image/png")

	w4 := performRequest("GET", "/swagger-ui.css", router)
	assert.Equal(t, 200, w4.Code)
	assert.Equal(t, w4.Header()["Content-Type"][0], "text/css; charset=utf-8")

	w5 := performRequest("GET", "/swagger-ui-bundle.js", router)
	assert.Equal(t, 200, w5.Code)
	assert.Equal(t, w5.Header()["Content-Type"][0], "application/javascript")

	w6 := performRequest("GET", "/notfound", router)
	assert.Equal(t, 404, w6.Code)

}

func TestDisablingWrapHandler(t *testing.T) {
	gin.SetMode(gin.TestMode)

	router := gin.New()
	disablingKey := "SWAGGER_DISABLE"

	router.GET("/simple/*any", DisablingWrapHandler(swaggerFiles.Handler, disablingKey))

	w1 := performRequest("GET", "/simple/index.html", router)
	assert.Equal(t, 200, w1.Code)

	w2 := performRequest("GET", "/simple/doc.json", router)
	assert.Equal(t, 200, w2.Code)

	w3 := performRequest("GET", "/simple/favicon-16x16.png", router)
	assert.Equal(t, 200, w3.Code)

	w4 := performRequest("GET", "/simple/notfound", router)
	assert.Equal(t, 404, w4.Code)

	_ = os.Setenv(disablingKey, "true")

	router.GET("/disabling/*any", DisablingWrapHandler(swaggerFiles.Handler, disablingKey))

	w11 := performRequest("GET", "/disabling/index.html", router)
	assert.Equal(t, 404, w11.Code)

	w22 := performRequest("GET", "/disabling/doc.json", router)
	assert.Equal(t, 404, w22.Code)

	w44 := performRequest("GET", "/disabling/oauth2-redirect.html", router)
	assert.Equal(t, 404, w44.Code)

	w55 := performRequest("GET", "/disabling/notfound", router)
	assert.Equal(t, 404, w55.Code)
}

func TestDisablingCustomWrapHandler(t *testing.T) {
	gin.SetMode(gin.TestMode)

	router := gin.New()
	disablingKey := "SWAGGER_DISABLE2"

	router.GET("/simple/*any", DisablingCustomWrapHandler(&Config{}, swaggerFiles.Handler, disablingKey))

	w1 := performRequest("GET", "/simple/index.html", router)
	assert.Equal(t, 200, w1.Code)

	_ = os.Setenv(disablingKey, "true")

	router.GET("/disabling/*any", DisablingCustomWrapHandler(&Config{}, swaggerFiles.Handler, disablingKey))

	w11 := performRequest("GET", "/disabling/index.html", router)
	assert.Equal(t, 404, w11.Code)
}

func TestWithGzipMiddleware(t *testing.T) {
	gin.SetMode(gin.TestMode)
	router := gin.New()

	router.Use(gzip.Gzip(gzip.BestSpeed))

	router.GET("/*any", WrapHandler(swaggerFiles.Handler))

	w1 := performRequest("GET", "/index.html", router)
	assert.Equal(t, 200, w1.Code)
	assert.Equal(t, w1.Header()["Content-Type"][0], "text/html; charset=utf-8")

	w2 := performRequest("GET", "/swagger-ui.css", router)
	assert.Equal(t, 200, w2.Code)
	assert.Equal(t, w2.Header()["Content-Type"][0], "text/css; charset=utf-8")

	w3 := performRequest("GET", "/swagger-ui-bundle.js", router)
	assert.Equal(t, 200, w3.Code)
	assert.Equal(t, w3.Header()["Content-Type"][0], "application/javascript")

	w4 := performRequest("GET", "/doc.json", router)
	assert.Equal(t, 200, w4.Code)
	assert.Equal(t, w4.Header()["Content-Type"][0], "application/json; charset=utf-8")
}

func performRequest(method, target string, router *gin.Engine) *httptest.ResponseRecorder {
	r := httptest.NewRequest(method, target, nil)
	w := httptest.NewRecorder()
	router.ServeHTTP(w, r)
	return w
}

func TestURL(t *testing.T) {
	cfg := Config{}

	expected := "https://github.com/swaggo/http-swagger"
	configFunc := URL(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.URL)
}

func TestDocExpansion(t *testing.T) {
	var cfg Config

	expected := "list"
	configFunc := DocExpansion(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.DocExpansion)

	expected = "full"
	configFunc = DocExpansion(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.DocExpansion)

	expected = "none"
	configFunc = DocExpansion(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.DocExpansion)
}

func TestDeepLinking(t *testing.T) {
	var cfg Config
	assert.Equal(t, false, cfg.DeepLinking)

	configFunc := DeepLinking(true)
	configFunc(&cfg)
	assert.Equal(t, true, cfg.DeepLinking)

	configFunc = DeepLinking(false)
	configFunc(&cfg)
	assert.Equal(t, false, cfg.DeepLinking)

}

func TestDefaultModelsExpandDepth(t *testing.T) {
	var cfg Config

	assert.Equal(t, 0, cfg.DefaultModelsExpandDepth)

	expected := -1
	configFunc := DefaultModelsExpandDepth(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.DefaultModelsExpandDepth)

	expected = 1
	configFunc = DefaultModelsExpandDepth(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.DefaultModelsExpandDepth)
}

func TestInstanceName(t *testing.T) {
	var cfg Config

	assert.Equal(t, "", cfg.InstanceName)

	expected := swag.Name
	configFunc := InstanceName(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.InstanceName)

	expected = "custom_name"
	configFunc = InstanceName(expected)
	configFunc(&cfg)
	assert.Equal(t, expected, cfg.InstanceName)
}

func TestPersistAuthorization(t *testing.T) {
	var cfg Config
	assert.Equal(t, false, cfg.PersistAuthorization)

	configFunc := PersistAuthorization(true)
	configFunc(&cfg)
	assert.Equal(t, true, cfg.PersistAuthorization)

	configFunc = PersistAuthorization(false)
	configFunc(&cfg)
	assert.Equal(t, false, cfg.PersistAuthorization)
}