package cmd

import (
	"fmt"
	"time"

	"github.com/rs/zerolog"
	"github.com/rs/zerolog/log"
	"github.com/urfave/cli/v2"

	"codeberg.org/codeberg/pages/server/database"
)

var Certs = &cli.Command{
	Name:  "certs",
	Usage: "manage certs manually",
	Subcommands: []*cli.Command{
		{
			Name:   "list",
			Usage:  "list all certificates in the database",
			Action: listCerts,
		},
		{
			Name:   "remove",
			Usage:  "remove a certificate from the database",
			Action: removeCert,
		},
		{
			Name:   "migrate",
			Usage:  "migrate from \"pogreb\" driver to dbms driver",
			Action: migrateCerts,
		},
	},
	Flags: []cli.Flag{
		// Cert Storage
		// TODO: remove in next version
		&cli.StringFlag{
			// DEPRICATED
			Name:    "db-pogreb",
			Value:   "key-database.pogreb",
			EnvVars: []string{"DB_POGREB"},
		},
		&cli.StringFlag{
			Name:    "db-type",
			Value:   "", // TODO: "sqlite3" in next version
			EnvVars: []string{"DB_TYPE"},
		},
		&cli.StringFlag{
			Name:    "db-conn",
			Value:   "certs.sqlite",
			EnvVars: []string{"DB_CONN"},
		},
		&cli.BoolFlag{
			Name:    "verbose",
			Usage:   "print trace info",
			EnvVars: []string{"VERBOSE"},
			Value:   false,
		},
	},
}

func migrateCerts(ctx *cli.Context) error {
	dbType := ctx.String("db-type")
	if dbType == "" {
		dbType = "sqlite3"
	}
	dbConn := ctx.String("db-conn")
	dbPogrebConn := ctx.String("db-pogreb")
	verbose := ctx.Bool("verbose")

	log.Level(zerolog.InfoLevel)
	if verbose {
		log.Level(zerolog.TraceLevel)
	}

	xormDB, err := database.NewXormDB(dbType, dbConn)
	if err != nil {
		return fmt.Errorf("could not connect to database: %w", err)
	}
	defer xormDB.Close()

	pogrebDB, err := database.NewPogreb(dbPogrebConn)
	if err != nil {
		return fmt.Errorf("could not open database: %w", err)
	}
	defer pogrebDB.Close()

	fmt.Printf("Start migration from \"%s\" to \"%s:%s\" ...\n", dbPogrebConn, dbType, dbConn)

	certs, err := pogrebDB.Items(0, 0)
	if err != nil {
		return err
	}

	for _, cert := range certs {
		if err := xormDB.Put(cert.Domain, cert.Raw()); err != nil {
			return err
		}
	}

	fmt.Println("... done")
	return nil
}

func listCerts(ctx *cli.Context) error {
	certDB, err := openCertDB(ctx)
	if err != nil {
		return err
	}

	items, err := certDB.Items(0, 0)
	if err != nil {
		return err
	}

	fmt.Printf("Domain\tValidTill\n\n")
	for _, cert := range items {
		if cert.Domain[0] == '.' {
			cert.Domain = "*" + cert.Domain
		}
		fmt.Printf("%s\t%s\n",
			cert.Domain,
			time.Unix(cert.ValidTill, 0).Format(time.RFC3339))
	}
	return nil
}

func removeCert(ctx *cli.Context) error {
	if ctx.Args().Len() < 1 {
		return fmt.Errorf("'certs remove' requires at least one domain as an argument")
	}

	domains := ctx.Args().Slice()

	certDB, err := openCertDB(ctx)
	if err != nil {
		return err
	}

	for _, domain := range domains {
		fmt.Printf("Removing domain %s from the database...\n", domain)
		if err := certDB.Delete(domain); err != nil {
			return err
		}
	}
	if err := certDB.Close(); err != nil {
		return err
	}
	return nil
}

func openCertDB(ctx *cli.Context) (certDB database.CertDB, err error) {
	if ctx.String("db-type") != "" {
		certDB, err = database.NewXormDB(ctx.String("db-type"), ctx.String("db-conn"))
		if err != nil {
			return nil, fmt.Errorf("could not connect to database: %w", err)
		}
	} else {
		// TODO: remove in next version
		fmt.Println(`
######################
## W A R N I N G !!! #
######################

You use "pogreb" witch is deprecated and will be removed in the next version.
Please switch to sqlite, mysql or postgres !!!

The simplest way is, to use './pages certs migrate' and set environment var DB_TYPE to 'sqlite' on next start.

`)
		log.Error().Msg("depricated \"pogreb\" used\n")

		certDB, err = database.NewPogreb(ctx.String("db-pogreb"))
		if err != nil {
			return nil, fmt.Errorf("could not create database: %w", err)
		}
	}
	return certDB, nil
}