package admin

import (
	"fmt"
	"strings"

	"forge.cadoles.com/cadoles/bouncer/internal/admin"
	"forge.cadoles.com/cadoles/bouncer/internal/auth/jwt"
	"forge.cadoles.com/cadoles/bouncer/internal/command/common"
	"forge.cadoles.com/cadoles/bouncer/internal/jwk"
	"forge.cadoles.com/cadoles/bouncer/internal/setup"
	"github.com/pkg/errors"
	"github.com/urfave/cli/v2"
	"gitlab.com/wpetit/goweb/logger"
)

const (
	flagPrintDefaultToken = "print-default-token"
)

func RunCommand() *cli.Command {
	flags := append(
		common.Flags(),
		&cli.BoolFlag{
			Name:  flagPrintDefaultToken,
			Usage: "Generate and print a default writer token in console at startup",
			Value: true,
		},
	)

	return &cli.Command{
		Name:  "run",
		Usage: "Run the admin server",
		Flags: flags,
		Action: func(ctx *cli.Context) error {
			conf, err := common.LoadConfig(ctx)
			if err != nil {
				return errors.Wrap(err, "could not load configuration")
			}

			logger.SetFormat(logger.Format(conf.Logger.Format))
			logger.SetLevel(logger.Level(conf.Logger.Level))

			projectVersion := ctx.String("projectVersion")
			flushSentry, err := setup.SetupSentry(ctx.Context, conf.Admin.Sentry, projectVersion)
			if err != nil {
				return errors.Wrap(err, "could not initialize sentry client")
			}

			defer flushSentry()

			if printDefaultToken := ctx.Bool(flagPrintDefaultToken); printDefaultToken {
				key, err := jwk.Generate(jwk.DefaultKeySize)
				if err != nil {
					return errors.Wrap(err, "could not generate default key")
				}

				token, err := jwt.GenerateToken(ctx.Context, key, string(conf.Admin.Auth.Issuer), "default-admin", jwt.Role(jwt.RoleWriter))
				if err != nil {
					return errors.WithStack(err)
				}

				logger.SetLevel(logger.LevelInfo)
				logger.Info(ctx.Context, "default writer token", logger.F("token", token))
				logger.SetLevel(logger.Level(conf.Logger.Level))
			}

			srv := admin.NewServer(
				admin.WithServerConfig(conf.Admin),
				admin.WithRedisConfig(conf.Redis),
				admin.WithBootstrapConfig(conf.Bootstrap),
			)

			addrs, srvErrs := srv.Start(ctx.Context)

			select {
			case addr := <-addrs:
				url := fmt.Sprintf("http://%s", addr.String())
				url = strings.Replace(url, "0.0.0.0", "127.0.0.1", 1)

				logger.Info(ctx.Context, "listening", logger.F("url", url))
			case err = <-srvErrs:
				return errors.WithStack(err)
			}

			if err = <-srvErrs; err != nil {
				return errors.WithStack(err)
			}

			return nil
		},
	}
}