package cmd

import (
	"context"
	"fmt"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/controller/cardquery"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/controller/infopb"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/controller/msgcallpb"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/model"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/service"
	sharedtoken "git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/token"

	"git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/pub/xjpubconsts"
	"git.5iot.com/iotlcm-public/iotlcm-upstream-chan/internal/pub/xjpubservice"
	"github.com/gogf/gf/contrib/rpc/grpcx/v2"
	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/net/ghttp"
	"github.com/gogf/gf/v2/net/gsvc"
	"github.com/gogf/gf/v2/os/gcmd"
	"github.com/gogf/gf/v2/util/gconv"
	"google.golang.org/grpc"
	"google.golang.org/grpc/reflection"
)

const (
	ServiceNamePrefix = "iotlcmupstreamchan"
)

var (
	gGrpcPort = 8700
	gAccessIP = "0.0.0.0"
)
var (
	Main = gcmd.Command{
		Name:  "main",
		Usage: "main",
		Brief: "start http server",
		Func: func(ctx context.Context, parser *gcmd.Parser) (err error) {
			s := g.Server()
			gGrpcPort = gconv.Int(gcmd.GetOptWithEnv("grpcport"))
			gAccessIP = gconv.String(gcmd.GetOptWithEnv("accessip"))

			if len(gAccessIP) == 0 {
				gAccessIP = "0.0.0.0"
			}
			if gGrpcPort == 0 {
				gGrpcPort = 8110
			}
			nodeName := fmt.Sprintf("%s", ServiceNamePrefix)

			xjpubservice.Info().SetInfoName(xjpubconsts.ServiceTypeAccess, fmt.Sprintf("%s-http-svc", ServiceNamePrefix), "上游运营商渠道服务", "上游运营商渠道服务")
			xjpubservice.Info().AddInfoData("grpcport", gGrpcPort)
			xjpubservice.Info().AddInfoData("accessip", gAccessIP)
			xjpubservice.Info().AddInfoData("nodeName", nodeName)

			xjpubservice.InfoRpc().SetInfoName(xjpubconsts.ServiceTypeAccess, fmt.Sprintf("%s-grpc-svc", ServiceNamePrefix), "上游运营商渠道服务", "上游运营商渠道服务")
			xjpubservice.InfoRpc().AddInfoData("grpcport", gGrpcPort)
			xjpubservice.InfoRpc().AddInfoData("accessip", gAccessIP)
			xjpubservice.InfoRpc().AddInfoData("nodeName", nodeName)
			bindHTTPRoutes(s)
			err = service.ChannelConfig().Start(ctx)
			if err != nil {
				return err
			}

			err = service.UpstreamAPI().Start(ctx)
			if err != nil {
				return err
			}

			go func() {
				c := grpcx.Server.NewConfig()
				c.Endpoints = []string{fmt.Sprintf("%s:%d", gAccessIP, gGrpcPort)}
				c.Options = append(c.Options, []grpc.ServerOption{
					grpcx.Server.ChainUnary(
						grpcx.Server.UnaryValidate,
					),
				}...)
				sGRPC := grpcx.Server.New(c)
				sGRPC.Service(&gsvc.LocalService{
					Name:      fmt.Sprintf("%s-grpc-svc", ServiceNamePrefix),
					Endpoints: gsvc.Endpoints{gsvc.NewEndpoint(fmt.Sprintf("%s:%d", gAccessIP, gGrpcPort))},
					Metadata: gsvc.Metadata{
						gsvc.MDProtocol: "grpc",
						gsvc.MDInsecure: true,
					},
				})
				infopb.Register(sGRPC)
				msgcallpb.Register(sGRPC)
				reflection.Register(sGRPC.Server)
				g.Log().Infof(ctx, "GRPC Server启动, listenPort:%d", gGrpcPort)
				sGRPC.Run()
				g.Log().Infof(ctx, "GRPC Server堵塞运行结束")
			}()

			s.Run()
			service.UpstreamAPI().Stop(ctx)
			service.ChannelConfig().Stop(ctx)
			return nil
		},
	}
)

type sharedTokenGetter interface {
	GetSharedToken(ctx context.Context) (sharedtoken.OneLinkToken, error)
}

func bindHTTPRoutes(s *ghttp.Server) {
	s.Group("/", func(group *ghttp.RouterGroup) {
		group.Middleware(ghttp.MiddlewareHandlerResponse)
		group.Bind(
			cardquery.NewV1(),
		)
		// Internal control endpoint used to apply a single channel change
		// without waiting for the periodic full reload.
		group.POST("/internal/channel/test", func(r *ghttp.Request) {
			input := new(model.ChannelTestInput)
			if err := r.Parse(input); err != nil {
				r.SetError(err)
				return
			}
			output, err := service.UpstreamAPI().TestChannel(r.Context(), input)
			if err != nil {
				r.SetError(err)
				return
			}
			r.Response.WriteJson(g.Map{"code": 0, "message": "success", "data": output})
		})
		group.POST("/internal/channel/refresh", func(r *ghttp.Request) {
			chanKey := r.GetQuery("chanKey").String()
			if chanKey == "" {
				chanKey = r.Get("chanKey").String()
			}
			if err := service.UpstreamAPI().RefreshChannel(r.Context(), chanKey); err != nil {
				r.SetError(err)
				return
			}
			r.Response.WriteJson(g.Map{
				"code":    0,
				"message": "success",
				"data":    g.Map{"chanKey": chanKey, "refreshed": true},
			})
		})
		group.POST("/internal/channel/remove", func(r *ghttp.Request) {
			chanKey := r.GetQuery("chanKey").String()
			if chanKey == "" {
				chanKey = r.Get("chanKey").String()
			}
			if err := service.UpstreamAPI().RemoveChannel(r.Context(), chanKey); err != nil {
				r.SetError(err)
				return
			}
			r.Response.WriteJson(g.Map{
				"code":    0,
				"message": "success",
				"data":    g.Map{"chanKey": chanKey, "removed": true},
			})
		})
		group.POST("/internal/channel/shared-token", func(r *ghttp.Request) {
			chanKey := r.Get("chanKey").String()
			if chanKey == "" {
				r.Response.WriteJson(g.Map{
					"code":    50,
					"message": "chanKey不能为空",
				})
				return
			}
			channelCache, ok := service.UpstreamAPI().GetChan(chanKey)
			if !ok || channelCache.Instance == nil {
				if err := service.UpstreamAPI().RefreshChannel(r.Context(), chanKey); err != nil {
					g.Log().Errorf(r.Context(), "shared-token refresh channel failed, chanKey: %s, err: %+v", chanKey, err)
					r.Response.WriteJson(g.Map{
						"code":    50,
						"message": "通道实例化失败",
					})
					return
				}
				channelCache, ok = service.UpstreamAPI().GetChan(chanKey)
				if !ok || channelCache.Instance == nil {
					r.Response.WriteJson(g.Map{
						"code":    50,
						"message": "通道不存在",
					})
					return
				}
			}
			provider, ok := channelCache.Instance.(sharedTokenGetter)
			if !ok {
				r.Response.WriteJson(g.Map{
					"code":    50,
					"message": "该通道不支持共享Token",
				})
				return
			}
			tok, err := provider.GetSharedToken(r.Context())
			if err != nil {
				g.Log().Errorf(r.Context(), "shared-token get token failed, chanKey: %s, err: %+v", chanKey, err)
				r.Response.WriteJson(g.Map{
					"code":    50,
					"message": "获取共享Token失败",
				})
				return
			}
			if tok.Value == "" {
				r.Response.WriteJson(g.Map{
					"code":    50,
					"message": "该通道尚未获取共享Token",
				})
				return
			}
			chanAlias := ""
			if channelConf, ok := service.ChannelConfig().GetChannel(chanKey); ok && channelConf.Channel != nil {
				chanAlias = channelConf.Channel.ChanAlias
			}
			tokenExpire := ""
			if !tok.ExpiresAt.IsZero() {
				// Go time layouts use the reference date, not PHP-style format tokens.
				tokenExpire = tok.ExpiresAt.Format("2006-01-02 15:04:05")
			}
			r.Response.WriteJson(g.Map{
				"code":    0,
				"message": "success",
				"data": g.Map{
					"chanAlias":         chanAlias,
					"chanKey":           chanKey,
					"accessToken":       tok.Value,
					"accessTokenExpire": tokenExpire,
				},
			})
		})
	})
}