package wan

import (
	"context"
	"fmt"
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestAddress(t *testing.T) {
	for _, tc := range []struct {
		name, body string
		status     int
		want       string
	}{
		{"public", `{"rows":[{"description":"WAN","ipv4":[{"ipaddr":"8.8.4.4/24"}]}]}`, 200, "8.8.4.4"},
		{"lan", `{"rows":[{"description":"LAN","ipv4":[{"ipaddr":"8.8.4.4"}]}]}`, 200, ""},
		{"private", `{"rows":[{"description":"WAN","ipv4":[{"ipaddr":"10.146.95.240"}]}]}`, 200, ""},
		{"ambiguous", `{"rows":[{"description":"WAN","ipv4":[{"ipaddr":"8.8.4.4"},{"ipaddr":"8.8.8.8"}]}]}`, 200, ""},
		{"failed", `{}`, 503, ""},
	} {
		t.Run(tc.name, func(t *testing.T) {
			s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
				if r.Method != http.MethodGet || r.URL.Path != "/api/interfaces/overview/interfaces_info" {
					t.Errorf("unexpected API request")
				}
				if r.Header.Get("Content-Type") != "" {
					t.Errorf("GET must not declare a JSON body")
				}
				key, secret, ok := r.BasicAuth()
				if !ok || key != "synthetic" || secret != "fake" {
					t.Errorf("missing authentication")
				}
				w.WriteHeader(tc.status)
				fmt.Fprint(w, tc.body)
			}))
			defer s.Close()
			c := Client{URL: s.URL, Key: "synthetic", Secret: "fake", HTTP: s.Client()}
			got, err := c.Address(context.Background())
			if got != tc.want || (err != nil) != (tc.want == "") {
				t.Fatalf("got %q, %v", got, err)
			}
		})
	}
}