package globals

import (
	"encoding/base64"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestGostClientCreateServiceUsesBasicAuthAndPathPrefix(t *testing.T) {
	var (
		gotPath string
		gotAuth string
		gotBody GostServiceConfig
	)

	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		gotAuth = r.Header.Get("Authorization")
		if err := json.NewDecoder(r.Body).Decode(&gotBody); err != nil {
			t.Fatalf("Decode failed: %v", err)
		}
		w.WriteHeader(http.StatusOK)
	}))
	defer server.Close()

	client := NewGost(server.URL, 0, "/api", "user", "pass")
	err := client.CreateService(&GostServiceConfig{
		Name: "svc-1",
		Addr: ":10000",
		Handler: GostHandlerConfig{
			Type:   "auto",
			Chain:  "chain-a",
			Auther: "auther-a",
		},
		Listener: GostListenerConfig{Type: "tcp"},
	})
	if err != nil {
		t.Fatalf("CreateService returned error: %v", err)
	}

	if gotPath != "/api/config/services" {
		t.Fatalf("unexpected path: %s", gotPath)
	}
	if gotAuth != "Basic "+base64.StdEncoding.EncodeToString([]byte("user:pass")) {
		t.Fatalf("unexpected auth header: %s", gotAuth)
	}
	if gotBody.Name != "svc-1" || gotBody.Handler.Type != "auto" || gotBody.Handler.Chain != "chain-a" {
		t.Fatalf("unexpected request body: %+v", gotBody)
	}
}

func TestGostClientDeleteServiceTreats404AsIdempotent(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		http.NotFound(w, r)
	}))
	defer server.Close()

	client := NewGost(server.URL, 0, "", "user", "pass")
	if err := client.DeleteService("svc-1"); !IsGostNotFound(err) {
		t.Fatalf("expected gost not found error, got: %v", err)
	}
}

func TestGostClientGetChainReadsTopLevelName(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/config/chains/chain-a" {
			t.Fatalf("unexpected path: %s", r.URL.Path)
		}
		_, _ = w.Write([]byte(`{"name":"chain-a"}`))
	}))
	defer server.Close()

	client := NewGost(server.URL, 0, "", "user", "pass")
	chain, err := client.GetChain("chain-a")
	if err != nil {
		t.Fatalf("GetChain returned error: %v", err)
	}
	if chain.Name != "chain-a" {
		t.Fatalf("unexpected chain: %+v", chain)
	}
}

func TestNormalizeGostPathPrefix(t *testing.T) {
	if got := normalizeGostPathPrefix("api/"); got != "/api" {
		t.Fatalf("unexpected prefix: %s", got)
	}
	if got := normalizeGostPathPrefix(""); got != "" {
		t.Fatalf("unexpected empty prefix: %s", got)
	}
	if !strings.HasPrefix(normalizeGostPathPrefix("/v1"), "/") {
		t.Fatal("expected normalized prefix to start with slash")
	}
}