package permissionpolicy_test

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

	"imuslab.com/zoraxy/mod/dynamicproxy/permissionpolicy"
)

func TestInjectPermissionPolicyHeader(t *testing.T) {
	tests := []struct {
		name           string
		existingHeader string
		policy         *permissionpolicy.PermissionsPolicy
		expectedHeader string
	}{
		{
			name:           "No existing policy, valid PermissionsPolicy",
			existingHeader: "",
			policy: &permissionpolicy.PermissionsPolicy{
				Geolocation: []string{"self"},
				Microphone:  []string{"https://example.com"},
				Camera:      []string{"*"},
			},
			expectedHeader: "camera=*, geolocation=(self), microphone=(https://example.com)",
		},
		{
			name:           "Existing Permissions-Policy header should not be overwritten",
			existingHeader: "geolocation=(self), microphone=()",
			policy: &permissionpolicy.PermissionsPolicy{
				Geolocation: []string{"self"},
				Microphone:  []string{"https://example.com"},
				Camera:      []string{"*"},
			},
			expectedHeader: "geolocation=(self), microphone=()",
		},
		{
			name:           "No policy provided",
			existingHeader: "",
			policy:         nil,
			expectedHeader: "",
		},
		{
			name:           "Empty PermissionsPolicy",
			existingHeader: "",
			policy:         &permissionpolicy.PermissionsPolicy{},
			expectedHeader: "",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			rr := httptest.NewRecorder()
			if tt.existingHeader != "" {
				rr.Header().Set("Permissions-Policy", tt.existingHeader)
			}

			permissionpolicy.InjectPermissionPolicyHeader(rr, tt.policy)

			gotHeader := rr.Header().Get("Permissions-Policy")
			if !strings.Contains(gotHeader, tt.expectedHeader) {
				t.Errorf("got header %s, want %s", gotHeader, tt.expectedHeader)
			}
		})
	}
}