package server

import (
	"context"
	"database/sql"
	"fmt"
	commonUtils "git.mic.pp.ua/anderson/nettools/common"
	dbUtils "git.mic.pp.ua/anderson/nettools/db"
	"github.com/golang-migrate/migrate/v4/database/pgx/v5"
	"github.com/jackc/pgx/v5/pgxpool"
	_ "github.com/jackc/pgx/v5/stdlib"
	"github.com/matchsystems/werr"
	"log"
	"mic-wallet/server/core"
	"mic-wallet/server/repository"
	"net"
	"net/http"
	"runtime"
	"time"
)

func (s *Server) Setup(ctx context.Context) error {
	// ===================
	// Setting up database

	var db *sql.DB
	var err error
	success, errs := commonUtils.Retry(ctx, 5, time.Second*1, func(_ context.Context) error {
		db, err = sql.Open("pgx", s.Cfg.DbConnUrl)
		if err != nil {
			return err
		}
		return db.Ping()
	})
	if !success {
		return werr.Wrapf(errs[0], "failed to connect to database")
	}

	log.Println("Applying database migrations")
	ver, dirty, err := dbUtils.DoMigrate(dbUtils.MigrationConfig[*pgx.Config]{
		MigrationsPath: "./migrations",
		DB:             db,
		VersionLimit:   -1,
		Drop:           false,
		DriverCfg: &pgx.Config{
			MigrationsTable: "migrations",
			SchemaName:      "public",
		},
	}, dbUtils.NewMigratePgxInstance)
	if err != nil {
		return werr.Wrapf(err, "failed to apply database migrations")
	}
	log.Println("Database migrations applied")
	log.Println("\tVersion: ", ver)
	log.Println("\tDirty: ", dirty)

	if err = db.Close(); err != nil {
		return werr.Wrapf(err, "failed to close database connection")
	}
	s.DB, err = pgxpool.New(ctx, s.Cfg.DbConnUrl)
	if err != nil {
		return werr.Wrapf(err, "failed to create new pgxpool")
	}

	// ========================
	// Internals initialization

	s.Repo = repository.NewRepository(s.DB)

	commiterWorkersLim := runtime.NumCPU() - 1
	if commiterWorkersLim < 1 {
		commiterWorkersLim = 1
	}
	s.BlocksCommiter = core.NewBlocksCommiter(s.Repo, s.ErrChan, commiterWorkersLim)
	s.BlocksCreator = core.NewBlocksCreator(s.BlocksCommiter)

	// ======================
	// Creating net listeners

	if s.Cfg.HttpPort > 0 || s.Cfg.HttpsPort > 0 {
		s.Mux = http.NewServeMux()
	}
	if s.Cfg.HttpPort > 0 {
		addr := fmt.Sprintf("%s:%d", s.Cfg.Addr, s.Cfg.HttpPort)
		s.HttpListener, err = net.Listen("tcp", addr)
		if err != nil {
			return werr.Wrapf(err, "failed to listen http on address %s", addr)
		}
	}
	if s.Cfg.HttpsPort > 0 {
		addr := fmt.Sprintf("%s:%d", s.Cfg.Addr, s.Cfg.HttpsPort)
		s.HttpListener, err = net.Listen("tcp", addr)
		if err != nil {
			return werr.Wrapf(err, "failed to listen https on address %s", addr)
		}
	}
	if s.Cfg.GrpcPort > 0 {
		addr := fmt.Sprintf("%s:%d", s.Cfg.Addr, s.Cfg.GrpcPort)
		s.GrpcListener, err = net.Listen("tcp", addr)
		if err != nil {
			return werr.Wrapf(err, "failed to listen grpc on address %s", addr)
		}
	}
	return nil
}