package middleware

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

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

type header struct {
	Key   string
	Value string
}

func performRequest(
	r http.Handler,
	method, path string,
	headers ...header,
) *httptest.ResponseRecorder {
	req := httptest.NewRequest(method, path, nil)
	for _, h := range headers {
		req.Header.Add(h.Key, h.Value)
	}
	w := httptest.NewRecorder()
	r.ServeHTTP(w, req)
	return w
}

func TestRequestID(t *testing.T) {
	r := gin.New()
	r.Use(RequestID())
	var got string
	wanted := "123"

	r.GET("/example", func(c *gin.Context) {
		got = c.GetString(requestID)
		c.Status(http.StatusOK)
	})

	r.POST("/example", func(c *gin.Context) {
		got = c.GetString(requestID)
		c.String(http.StatusAccepted, "ok")
	})

	// Test with Request ID
	_ = performRequest(r, "GET", "/example?a=100", header{requestID, wanted})
	assert.Equal(t, "123", got)

	_ = performRequest(r, "GET", "/example?a=100")
	assert.NotEqual(t, "", got)
}