package api

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

	"git.ipao.vip/rogee/creator-hub/internal/creator"
	hub "git.ipao.vip/rogee/creator-hub/internal/environment"
)

func TestCompetitorSharePlatform(t *testing.T) {
	for _, test := range []struct {
		name string
		url  string
		want string
	}{
		{name: "douyin short link", url: "https://v.douyin.com/abc123/", want: creator.PlatformDouyin},
		{name: "douyin content", url: "https://www.douyin.com/video/123", want: creator.PlatformDouyin},
	} {
		t.Run(test.name, func(t *testing.T) {
			got, err := competitorSharePlatform(test.url)
			if err != nil || got != test.want {
				t.Fatalf("competitorSharePlatform(%q) = %q, %v; want %q", test.url, got, err, test.want)
			}
		})
	}

	for _, url := range []string{
		"http://v.douyin.com/abc123/",
		"https://www.douyin.com.evil/video/123",
		"https://v.douyin.com/abc123/#fragment",
	} {
		t.Run(url, func(t *testing.T) {
			if _, err := competitorSharePlatform(url); err == nil {
				t.Fatalf("competitorSharePlatform(%q) unexpectedly succeeded", url)
			}
		})
	}
}

func TestRandomGatewaySelectsFromRegisteredGateways(t *testing.T) {
	gateways := []hub.Gateway{
		{Name: "gateway-a"},
		{Name: "gateway-b"},
		{Name: "gateway-c"},
	}
	allowed := map[string]bool{
		"gateway-a": true,
		"gateway-b": true,
		"gateway-c": true,
	}
	for range 32 {
		if gateway := randomGateway(gateways); !allowed[gateway.Name] {
			t.Fatalf("randomGateway selected unregistered gateway %q", gateway.Name)
		}
	}
}

func TestAnonymousBrowserLeasePurgesRuntimeAndProfile(t *testing.T) {
	var requestBody map[string]any
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodDelete || r.URL.Path != "/v1/browsers/anon-test" {
			t.Fatalf("unexpected cleanup request: %s %s", r.Method, r.URL.Path)
		}
		if err := json.NewDecoder(r.Body).Decode(&requestBody); err != nil {
			t.Fatal(err)
		}
		w.WriteHeader(http.StatusNoContent)
	}))
	defer server.Close()

	err := (anonymousBrowserLease{
		gateway: hub.Gateway{Endpoint: server.URL, Token: "test-token"},
		environment: hub.EnvironmentContext{
			Env:              hub.Env{Alias: "anon-test"},
			BindingVersion:   1,
			RuntimeID:        strings.Repeat("a", 64),
			RuntimeNetworkID: "native-" + strings.Repeat("b", 32),
		},
	}).close()
	if err != nil {
		t.Fatal(err)
	}
	if requestBody["purge_profile"] != true || requestBody["binding_version"] != float64(1) {
		t.Fatalf("cleanup request did not fence and purge the temporary runtime: %#v", requestBody)
	}
	if _, ok := requestBody["network_exit_id"]; ok {
		t.Fatalf("cleanup request must use only the runtime generation fence: %#v", requestBody)
	}
}

func TestAnonymousBrowserLeaseReleasesConcurrencySlot(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodDelete || r.URL.Path != "/v1/browsers/anon-test" {
			t.Fatalf("unexpected cleanup request: %s %s", r.Method, r.URL.Path)
		}
		w.WriteHeader(http.StatusNoContent)
	}))
	defer server.Close()

	slots := make(chan struct{}, 1)
	slots <- struct{}{}
	lease := anonymousBrowserLease{gateway: hub.Gateway{Endpoint: server.URL, Token: "test-token"}, slot: slots, environment: hub.EnvironmentContext{Env: hub.Env{Alias: "anon-test"}, BindingVersion: 1}}
	if err := lease.close(); err != nil {
		t.Fatal(err)
	}
	// 释放 = 名额回到池里（能再次非阻塞占用）。
	select {
	case slots <- struct{}{}:
	default:
		t.Fatal("close must release the anonymous browser concurrency slot")
	}

	// 创建失败路径也必须释放名额，否则失败几次后永久占满。
	failed := anonymousBrowserLease{gateway: hub.Gateway{Endpoint: "http://127.0.0.1:1", Token: "test-token"}, slot: slots}
	if err := failed.close(); err == nil {
		t.Fatal("cleanup against unreachable gateway must fail")
	}
	select {
	case slots <- struct{}{}:
	default:
		t.Fatal("failed close must still release the anonymous browser concurrency slot")
	}
}

func TestDouyinWorkKeyFromURL(t *testing.T) {
	for _, test := range []struct {
		url  string
		want string
	}{
		{url: "https://www.douyin.com/video/123", want: "123"},
		{url: "https://www.douyin.com/video/123?previous_page=app_code_link", want: "123"},
	} {
		got, err := douyinWorkKeyFromURL(test.url)
		if err != nil || got != test.want {
			t.Fatalf("douyinWorkKeyFromURL(%q) = %q, %v; want %q", test.url, got, err, test.want)
		}
	}
	for _, url := range []string{
		"https://www.douyin.com/video/0",
		"https://www.douyin.com/user/123",
		"https://v.douyin.com/abc123",
	} {
		if _, err := douyinWorkKeyFromURL(url); err == nil {
			t.Fatalf("douyinWorkKeyFromURL(%q) unexpectedly succeeded", url)
		}
	}
}