package app

import (
	"context"
	"fmt"
	"net/http"
	"os"
	"strings"

	v1 "github.com/authzed/authzed-go/proto/authzed/api/v1"
	"github.com/authzed/authzed-go/v1"
	"github.com/rs/zerolog"
	"github.com/xlgmokha/x/pkg/env"
	"github.com/xlgmokha/x/pkg/event"
	"github.com/xlgmokha/x/pkg/ioc"
	"github.com/xlgmokha/x/pkg/log"
	"github.com/xlgmokha/x/pkg/mapper"
	"github.com/xlgmokha/x/pkg/x"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/app/controllers/dashboard"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/app/controllers/sparkles"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/app/db"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/app/domain"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/pkg/authz"
	"gitlab.com/gitlab-org/software-supply-chain-security/authorization/sparkled/pkg/web"
)

func init() {
	c := ioc.Default

	ioc.RegisterSingleton[*zerolog.Logger](c, func() *zerolog.Logger {
		return log.New(os.Stdout, log.Fields{"app": "sparkled"})
	})
	ioc.RegisterSingleton[*authzed.Client](c, func() *authzed.Client {
		return authz.NewSpiceDBClient(
			context.Background(),
			env.Fetch("ZED_ENDPOINT", ":50051"),
			env.Fetch("ZED_TOKEN", "secret"),
		)
	})
	ioc.Register[authz.CheckPermissionService](c, func() authz.CheckPermissionService {
		return ioc.MustResolve[*authzed.Client](c)
	})
	ioc.RegisterSingleton[*event.Aggregator](c, func() *event.Aggregator {
		return x.New[*event.Aggregator](event.WithDefaults())
	})
	ioc.Register[*event.TypedAggregator[*domain.Sparkle]](c, func() *event.TypedAggregator[*domain.Sparkle] {
		return x.New[*event.TypedAggregator[*domain.Sparkle]](event.WithAggregator[*domain.Sparkle](
			ioc.MustResolve[*event.Aggregator](c),
		))
	})
	ioc.RegisterSingleton[domain.Repository[*domain.Sparkle]](c, func() domain.Repository[*domain.Sparkle] {
		return db.NewRepository[*domain.Sparkle](ioc.MustResolve[*event.TypedAggregator[*domain.Sparkle]](c))
	})
	ioc.RegisterSingleton[*http.ServeMux](c, func() *http.ServeMux {
		return http.NewServeMux()
	})
	ioc.Register[*dashboard.Controller](c, func() *dashboard.Controller {
		return dashboard.New()
	})
	ioc.Register[*sparkles.Controller](c, func() *sparkles.Controller {
		return sparkles.New(
			ioc.MustResolve[domain.Repository[*domain.Sparkle]](c),
			ioc.MustResolve[authz.CheckPermissionService](c),
		)
	})
	ioc.RegisterSingleton[*http.Client](c, func() *http.Client {
		return &http.Client{
			Transport: &web.Transport{
				Logger: ioc.MustResolve[*zerolog.Logger](c),
			},
		}
	})

	http.DefaultClient = ioc.MustResolve[*http.Client](c)

	mapper.Register[*http.Request, log.Fields](func(r *http.Request) log.Fields {
		return log.Fields{
			"host":        r.URL.Host,
			"method":      r.Method,
			"path":        r.URL.Path,
			"remote_host": r.RemoteAddr,
			"request_id":  r.Header.Get("x-request-id"),
		}
	})

	ioc.MustResolve[*event.TypedAggregator[*domain.Sparkle]](c).SubscribeTo("after.create", func(item *domain.Sparkle) {
		client := ioc.MustResolve[*authzed.Client](c)

		resource := item.ToGID().ToObjectReference()

		response, err := client.WriteRelationships(context.Background(), &v1.WriteRelationshipsRequest{
			Updates: []*v1.RelationshipUpdate{
				&v1.RelationshipUpdate{
					Operation: v1.RelationshipUpdate_OPERATION_CREATE,
					Relationship: &v1.Relationship{
						Resource: resource,
						Relation: "sparkler",
						Subject:  item.Author.ToSubjectReference(),
					},
				},
				&v1.RelationshipUpdate{
					Operation: v1.RelationshipUpdate_OPERATION_CREATE,
					Relationship: &v1.Relationship{
						Resource: resource,
						Relation: "sparklee",
						Subject: &v1.SubjectReference{
							Object: &v1.ObjectReference{
								ObjectType: "user",
								ObjectId:   strings.TrimPrefix(item.Sparklee, "@"),
							},
						},
					},
				},
				&v1.RelationshipUpdate{
					Operation: v1.RelationshipUpdate_OPERATION_CREATE,
					Relationship: &v1.Relationship{
						Resource: resource,
						Relation: "reader",
						Subject: &v1.SubjectReference{
							Object: &v1.ObjectReference{
								ObjectType: "user",
								ObjectId:   "*",
							},
						},
					},
				},
			},
		})
		if err != nil {
			fmt.Printf("%v\n", err)
		}
		fmt.Printf("%v\n", response)
	})
}