package main

import (
	"context"
	"fmt"
	"net/http"
	"os"
	"os/signal"
	"syscall"
	"time"

	"github.com/gorilla/mux"
	"github.com/twmb/franz-go/pkg/kgo"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
	"penahub.gitlab.yandexcloud.net/backend/templategen/amo"
	"penahub.gitlab.yandexcloud.net/backend/templategen/broker/tariff"
	"penahub.gitlab.yandexcloud.net/backend/templategen/dal"
	"penahub.gitlab.yandexcloud.net/backend/templategen/gdisk"
	"penahub.gitlab.yandexcloud.net/backend/templategen/handlers"
	"penahub.gitlab.yandexcloud.net/backend/templategen/middleware"
	"penahub.gitlab.yandexcloud.net/backend/templategen/privileges"
	"penahub.gitlab.yandexcloud.net/backend/templategen/tools"
	"penahub.gitlab.yandexcloud.net/backend/templategen/worker"
	"penahub.gitlab.yandexcloud.net/backend/templategen/yadisk"
)

type Env struct {
	Domain               string   `env:"DOMAIN" default:"tempgen.pena.digital"`
	LogFile              string   `env:"LOG_FILE" default:"./tmp/logs.log"`
	MongoURL             string   `env:"MONGO_URL" default:"mongodb://mongo:30000/?replicaSet=penahub-rs"`
	DBName               string   `env:"DB_NAME" default:"templategen"`
	YaDiskClientID       string   `env:"YADISK_CLIENT_ID" default:"94482c181e5148c096ae6ad3b2a981ea"`
	YaDiskClientSecret   string   `env:"YADISK_CLIENT_SECRET" default:"7dc4f541c3f64f4a9078e59d7494d222"`
	GDiskCredentials     string   `env:"GDISK_CREDENTIALS" default:"./static/gdisk-credentials.json"`
	AmoClientID          string   `env:"AMO_CLIENT_ID" default:"6c7f3fdb-cce7-4fb0-a8a3-640b695c8d00"`
	AmoClientSecret      string   `env:"AMO_CLIENT_SECRET" default:"5oJU1L8pScLKfEasShJ6KuDU32VrIs6BVKQ6BiY4vABIQycUWJziULytiUs5jaZU"`
	AmoRedirectUrn       string   `env:"AMO_REDIRECT_URN" default:"/settings/widgets/penagen/"`
	TokenKey             string   `env:"TOKEN_KEY" default:"z1eRU{fq*VtfLAszrz"`
	KafkaTariff          string   `env:"KAFKA_TARIFF"`
	KafkaBrokers         []string `env:"KAFKA_BROKERS"`
	KafkaTariffTopic     string   `env:"KAFKA_TARIFF_TOPIC"`
	KafkaConsumerGroupID string   `env:"KAFKA_CONSUMER_GROUP_ID"`
	PrivilegesDomain     string   `env:"PRIVILEGES_DOMAIN"`
}

func main() {
	opts := GetOpts()
	ctx, cancel := context.WithCancel(context.Background())

	// Set tools/token
	tools.SetToken(opts.TokenKey)

	// Logger
	cfgLogger := zap.NewDevelopmentConfig()
	cfgLogger.EncoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
	cfgLogger.EncoderConfig.ConsoleSeparator = "    "

	logger, err := cfgLogger.Build()

	logger.Info("OPTIONS", zap.Any("ENV", opts))

	if err != nil {
		panic(err)
	}

	err = privileges.PublishPrivileges(ctx, "https://admin.pena.digital/strator")

	if err != nil {
		logger.Error("ErrorPublishPrivileges", zap.Error(err))
	}

	// Start Data Access Layer

	mongoDal, err := dal.InitMongoDAL(ctx, opts.MongoURL, opts.DBName, logger)
	defer mongoDal.Disconnect()
	if err != nil {
		logger.Error("ErrorConnectToDAL", zap.Error(err))
		return
	}

	// Yandex Disk
	yaDisk := yadisk.NewClientApp(
		opts.YaDiskClientID,
		opts.YaDiskClientSecret,
		fmt.Sprintf("https://%v/yadisk", opts.Domain),
		fmt.Sprintf("https://%v", opts.Domain),
	)

	// Google Drive
	gDisk, err := gdisk.NewClientApp(opts.GDiskCredentials)
	if err != nil {
		logger.Error("ErrorCreateGoogleDriveClientApp", zap.Error(err))
		return
	}

	// Amo
	amoApp := amo.NewClientApp(
		opts.AmoClientID,
		opts.AmoClientSecret,
		fmt.Sprintf("https://%v/amo", opts.Domain),
	)

	// Tariff
	kafkaTariffClient, err := kgo.NewClient(
		kgo.SeedBrokers(opts.KafkaBrokers...),
		kgo.ConsumerGroup(opts.KafkaConsumerGroupID),
		kgo.ConsumeResetOffset(kgo.NewOffset().AtStart()),
		kgo.DefaultProduceTopic(opts.KafkaTariffTopic),
		kgo.ConsumeTopics(opts.KafkaTariffTopic),
	)
	if err != nil {
		logger.Error("ErrorCreateKafkaTariffClient", zap.Error(err))
		return
	}

	tariffConsumerDeps := tariff.ConsumerDeps{
		Logger: logger,
		Client: kafkaTariffClient,
	}
	tariffConsumer := tariff.NewConsumer(tariffConsumerDeps)

	// Tariff worker
	tariffWorkerDeps := worker.TariffWorkerDeps{
		Logger:           logger,
		Dal:              mongoDal,
		TariffConsumer:   tariffConsumer,
		PrivilegesDomain: opts.PrivilegesDomain,
	}

	tariffWorker := worker.NewTariffWorker(tariffWorkerDeps)

	go tariffWorker.Run(ctx)

	// Handlers
	h := handlers.NewHandlers(mongoDal, yaDisk, gDisk, amoApp, logger, &handlers.HandlerVars{
		Domain:         opts.Domain,
		AmoRedirectUrn: opts.AmoRedirectUrn,
	})

	r := mux.NewRouter()

	// Add Assets

	r.PathPrefix("/tmp/generated/").Handler(http.StripPrefix("/tmp/generated/",
		http.FileServer(http.Dir("tmp/generated"))))

	r.PathPrefix("/tmp/downloaded/").Handler(http.StripPrefix("/tmp/downloaded/",
		http.FileServer(http.Dir("tmp/downloaded"))))

	r.PathPrefix("/.well-known/pki-validation/").Handler(http.StripPrefix("/.well-known/pki-validation/", http.FileServer(http.Dir(".well-known/pki-validation"))))
	r.PathPrefix("/.well-known/acme-challenge/").Handler(http.StripPrefix("/.well-known/acme-challenge/",
		http.FileServer(http.Dir(".well-known/acme-challenge"))))

	r.PathPrefix("/static/examples/docx/").Handler(http.StripPrefix("/static/examples/docx/",
		http.FileServer(http.Dir("/static/examples/docx/"))))

	//# region ====== HANDLERS ======
	r.NotFoundHandler = http.HandlerFunc(h.PageNotFound)

	r.HandleFunc("/amo", h.AmoSaveToken)
	r.HandleFunc("/amo/state", h.AmoState)
	r.HandleFunc("/amo/access_rules", h.AmoAccessRules)

	// Set rules for Amo end-points
	amoAccess := map[string]string{
		"/amo/webhook":     "visibility",
		"/amo/generateDoc": "creation",
	}

	r.HandleFunc("/yadisk", h.YaDiskSaveToken)
	r.HandleFunc("/yadisk/setSettings", h.YaDiskSetSettings)
	r.HandleFunc("/yadisk/getList", h.YaDiskGetList)

	r.HandleFunc("/yadisk/resources/get", h.YaDiskGetResources)
	r.HandleFunc("/yadisk/resources/put", h.YaDiskPutResources)
	r.HandleFunc("/yadisk/resources/delete", h.YaDiskDeleteResources)
	r.HandleFunc("/yadisk/resources/upload", h.YaDiskUploadResources)
	r.HandleFunc("/yadisk/resources/downloadlink", h.YaDiskDownloadLink)
	r.HandleFunc("/yadisk/resources/download", h.YaDiskDownload)

	r.HandleFunc("/gdisk/getTemplateDir", h.GDiskGetDirTemplate) // устарело?
	r.HandleFunc("/gdisk", h.GDiskSaveToken)
	r.HandleFunc("/gdisk/setSettings", h.GDiskSetSettings)
	r.HandleFunc("/gdisk/getList", h.GDiskGetList)

	r.HandleFunc("/gdisk/resources/get", h.GDiskGetResources)
	r.HandleFunc("/gdisk/resources/put", h.GDiskPutResources)
	r.HandleFunc("/gdisk/resources/delete", h.GDiskDeleteResources)
	r.HandleFunc("/gdisk/resources/upload", h.GDiskUploadResources)

	r.HandleFunc("/penadisk/setSettings", h.PenaDiskSetSettings)
	r.HandleFunc("/penadisk/resources/get", h.PenaDiskGetResources)
	r.HandleFunc("/penadisk/resources/put", h.PenaDiskPutResources)
	r.HandleFunc("/penadisk/resources/delete", h.PenaDiskDeleteResources)
	r.HandleFunc("/penadisk/resources/upload", h.PenaDiskUploadResources)
	r.HandleFunc("/penadisk/resources/downloadlink", h.PenaDiskDownloadLink)

	r.HandleFunc("/template/set", h.TemplateSet)
	r.HandleFunc("/template/get", h.TemplateGet)
	r.HandleFunc("/template/getListByUser", h.TemplateGetListByUser)
	r.HandleFunc("/template/getListByGroup", h.TemplateGetListByGroup)
	r.HandleFunc("/template/update", h.TemplateUpdate)
	r.HandleFunc("/template/delete", h.TemplateDelete)

	r.HandleFunc("/group/create", h.TemplateGroupCreate)
	r.HandleFunc("/group/getList", h.TemplateGroupGetList)
	r.HandleFunc("/group/edit", h.TemplateGroupEdit)
	r.HandleFunc("/group/put", h.TemplateGroupPut)
	r.HandleFunc("/group/remove", h.TemplateGroupRemove)
	r.HandleFunc("/group/delete", h.TemplateGroupDelete)
	r.HandleFunc("/group/{id}", h.TemplateGroupGet)

	r.HandleFunc("/generator/byAmoLead", h.GeneratorByAmoLead)
	r.HandleFunc("/generator/byData", h.GeneratorByData)
	r.HandleFunc("/generator/byTemplate", h.GeneratorByData)
	r.HandleFunc("/generator/byAmoWebhook", h.GeneratorByAmoWebhook)
	r.HandleFunc("/generator/byamowebhook", h.GeneratorByAmoWebhook)

	r.HandleFunc("/history/get", h.GetHistoryByID)
	r.HandleFunc("/history/getList", h.GetHistoryList)
	r.HandleFunc("/history/getlist", h.GetHistoryList)

	//#endregion

	// Middlewares
	mw := middleware.InitMiddleware(mongoDal, amoApp, logger, amoAccess)

	r.Use(
		mw.MiddlewareHeaders,
		mw.MiddlewareCors,
		mw.MiddlewareAmoJwt,
		mw.MiddlewareJwt,
		// mw.MiddlewareAmoPlug,
		mw.Logger,
	)

	r.NotFoundHandler = r.NewRoute().HandlerFunc(h.PageNotFound).GetHandler()

	srv := http.Server{
		Handler:           r,
		ReadHeaderTimeout: time.Second * 3, // TODO: Обсудить со Skeris
	}

	go func() {
		err := srv.ListenAndServe()
		if err != nil {
			logger.Error("CanNotServe", zap.Error(err))
			return
		}
	}()

	// TLS

	fullCert := fmt.Sprintf("./static/cert/%v/fullchain.pem", opts.Domain)
	privCert := fmt.Sprintf("./static/cert/%v/privkey.pem", opts.Domain)

	go func() {
		err := srv.ListenAndServeTLS(fullCert, privCert)
		if err != nil {
			logger.Error("CanNotServe", zap.Error(err))
			return
		}
	}()

	// Graceful Shutdown
	interrupt := make(chan os.Signal, 1)
	signal.Notify(interrupt, os.Interrupt, syscall.SIGTERM)
	killSignal := <-interrupt
	switch killSignal {
	case os.Interrupt:
		logger.Error("AppInterrupted")
		return
	case syscall.SIGTERM:
		logger.Error("AppTerminated")
		return
	}

	defer cancel()
}

func GetOpts() Env {
	return getEnv(Env{})
}