package cmd

import (
	"context"
	"crypto/sha256"
	"encoding/json"
	"fmt"
	"net/url"
	"os"
	"strings"
	"testing"
	"time"

	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/net/ghttp"
	"github.com/gogf/gf/v2/os/gcfg"
	v1 "git.5iot.com/iotlcm-public/iotlcm-upstream-proxy/api/cardquery/v1"
	_ "git.5iot.com/iotlcm-public/iotlcm-upstream-proxy/internal/logic/simKeyFill"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-proxy/internal/logic/upstreamapi"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-proxy/internal/logic/upstreamimpl"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-proxy/internal/model"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-proxy/internal/service"
)

func TestAPNHTTPHarness(t *testing.T) {
	if os.Getenv("APN_HTTP_CHAIN_HELPER") != "1" {
		t.Skip("未启用本机HTTP模拟链")
	}
	gateway, err := url.Parse(os.Getenv("APN_HTTP_CHAIN_CHAN"))
	if err != nil || gateway.Scheme != "http" || gateway.Hostname() != "127.0.0.1" || gateway.Port() == "" {
		t.Fatal("只允许本机模拟chan")
	}
	adapter, err := gcfg.NewAdapterContent(fmt.Sprintf(`{"gateway":{"address":%q,"timeout":"2s"}}`, gateway.Host))
	if err != nil {
		t.Fatal(err)
	}
	g.Cfg().SetAdapter(adapter)
	api := upstreamapi.NewUpstreamAPI()
	api.RegisterChan("fake-channel", "1", &model.SimCardChannelCache{Instance: upstreamimpl.NewSimYD()})
	service.RegisterUpstreamAPI(api)
	server := ghttp.GetServer(t.Name())
	server.SetAddr("127.0.0.1:0")
	bindHTTPRoutes(server)
	stop := make(chan struct{})
	server.BindHandler("POST:/__test/stop", func(r *ghttp.Request) { close(stop) })
	if err := server.Start(); err != nil {
		t.Fatal(err)
	}
	defer server.Shutdown()
	fmt.Printf("APN_CHAIN_READY=http://127.0.0.1:%d\n", server.GetListenedPort())
	select {
	case <-stop:
	case <-time.After(3 * time.Minute):
		t.Error("HTTP模拟链未正常结束")
	}
}

type apnBindingTestFill struct {
	service.ISimKeyFill
	captured chan model.SimBaseReqJson
}

func (s *apnBindingTestFill) SimKeyFill(_ context.Context, input *model.SimBaseReqJson) (model.SimBaseResJson, error) {
	s.captured <- *input
	return model.SimBaseResJson{}, nil
}

func TestAPNProductionHTTPBindingPreservesRawPayload(t *testing.T) {
	old := service.SimKeyFill()
	capture := &apnBindingTestFill{ISimKeyFill: old, captured: make(chan model.SimBaseReqJson, 1)}
	service.RegisterSimKeyFill(capture)
	t.Cleanup(func() { service.RegisterSimKeyFill(old) })
	server := ghttp.GetServer(t.Name())
	server.SetAddr("127.0.0.1:0")
	bindHTTPRoutes(server)
	server.BindHandler("POST:/__test/legacy-binding", func(r *ghttp.Request) {
		var req v1.SimBaseReq
		if err := r.Parse(&req); err != nil {
			t.Error(err)
			r.Response.WriteStatus(400)
			return
		}
		capture.captured <- req.SimBaseReqJson
	})
	if err := server.Start(); err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { _ = server.Shutdown() })
	for _, data := range []string{
		`{"operationId":"frozen-operation","submitOnly":true,"operType":"1","apnName":"CMIOT"}`,
		`{"operationId":"frozen-operation","queryJobId":"saved-job","operType":"1","apnName":"CMIOT"}`,
		`{"operationId":"frozen-operation","recoverOnly":true,"operType":"1","apnName":"CMIOT"}`,
	} {
		for _, path := range []string{"/sim/change/sim-apn", "/sim/query/sim-apn-capability", "/sim/query/sim-session"} {
			input := model.SimBaseReqJson{SimKeys: []*model.SimKey{{ChanKey: "fake", ICCID: "fake-card", MSISDN: "frozen-number"}}, ReqData: json.RawMessage(data)}
			response, err := g.Client().ContentJson().Post(context.Background(), fmt.Sprintf("http://127.0.0.1:%d%s", server.GetListenedPort(), path), input)
			if err != nil {
				t.Fatal(err)
			}
			body := response.ReadAll()
			_ = response.Close()
			select {
			case got := <-capture.captured:
				var wantData, gotData map[string]any
				_ = json.Unmarshal(input.ReqData, &wantData)
				_ = json.Unmarshal(got.ReqData, &gotData)
				wantJSON, _ := json.Marshal(wantData)
				gotJSON, _ := json.Marshal(gotData)
				if path == "/sim/query/sim-session" {
					baselineResponse, err := g.Client().ContentJson().Post(context.Background(), fmt.Sprintf("http://127.0.0.1:%d/__test/legacy-binding", server.GetListenedPort()), input)
					if err != nil {
						t.Fatal(err)
					}
					_ = baselineResponse.Close()
					baseline := <-capture.captured
					if string(got.ReqData) != string(baseline.ReqData) {
						t.Fatalf("非APN旧绑定行为改变：got=%q baseline=%q", got.ReqData, baseline.ReqData)
					}
				} else if sha256.Sum256(wantJSON) != sha256.Sum256(gotJSON) {
					t.Fatalf("APN冻结请求摘要改变：path=%s want=%s got=%s", path, wantJSON, gotJSON)
				}
				if len(got.SimKeys) != 1 || *got.SimKeys[0] != *input.SimKeys[0] {
					t.Fatalf("代理生产绑定丢字段：%+v", got)
				}
			default:
				t.Fatalf("未经过生产代理controller：%s", body)
			}
		}
	}
}

func TestBindHTTPRoutesRegistersChannelControlRoutes(t *testing.T) {
	server := ghttp.GetServer("proxy-channel-refresh-route-test")
	server.SetAddr("127.0.0.1:0")
	bindHTTPRoutes(server)
	if err := server.Start(); err != nil {
		t.Fatalf("start HTTP server: %v", err)
	}
	t.Cleanup(func() {
		if err := server.Shutdown(); err != nil {
			t.Errorf("shutdown HTTP server: %v", err)
		}
	})

	want := map[string]bool{
		"/internal/channel/refresh":        false,
		"/internal/channel/remove":         false,
		"/internal/app-diagnosis/sim/*any": false,
	}
	for _, route := range server.GetRoutes() {
		if _, ok := want[route.Route]; ok && strings.EqualFold(route.Method, "POST") {
			want[route.Route] = true
		}
	}
	for route, found := range want {
		if !found {
			t.Fatalf("POST %s route was not registered: %+v", route, server.GetRoutes())
		}
	}
}