package http

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

	"github.com/gin-gonic/gin"
	. "github.com/onsi/gomega"
)

func TestRewriteBracketParams(t *testing.T) {
	t.Helper()

	gin.SetMode(gin.TestMode)

	testCases := []struct {
		name     string
		rawQuery string
		expected string
	}{
		{
			name:     "single bracket parameter",
			rawQuery: "region_ids%5B%5D=aws-us-east-1",
			expected: "region_ids=aws-us-east-1",
		},
		{
			name:     "multiple bracket parameters",
			rawQuery: "region_ids%5B%5D=aws-us-east-1&region_ids%5B%5D=aws-us-west-2",
			expected: "region_ids=aws-us-east-1&region_ids=aws-us-west-2",
		},
		{
			name:     "mixed bracket and regular parameters",
			rawQuery: "region_ids%5B%5D=aws-us-east-1&page_size=20&region_ids%5B%5D=aws-us-west-2",
			expected: "page_size=20&region_ids=aws-us-east-1&region_ids=aws-us-west-2",
		},
		{
			name:     "keep regular repeated parameters",
			rawQuery: "region_ids=aws-us-east-1&region_ids=aws-us-west-2&page_size=20",
			expected: "page_size=20&region_ids=aws-us-east-1&region_ids=aws-us-west-2",
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			g := NewGomegaWithT(t)

			recorder := httptest.NewRecorder()
			ctx, _ := gin.CreateTestContext(recorder)
			req := httptest.NewRequest(
				http.MethodGet,
				"/api/v1/serverless/orgs/1/recycledInstances?"+tc.rawQuery,
				http.NoBody,
			)
			ctx.Request = req

			RewriteBracketParams()(ctx)

			actualValues, err := url.ParseQuery(ctx.Request.URL.RawQuery)
			g.Expect(err).NotTo(HaveOccurred())
			expectedValues, err := url.ParseQuery(tc.expected)
			g.Expect(err).NotTo(HaveOccurred())
			g.Expect(actualValues).To(Equal(expectedValues))
		})
	}
}