package echo

import (
	"context"
	"sync"

	"code.crute.us/mcrute/golib/secrets"
	"code.crute.us/mcrute/golib/service"
	"code.crute.us/mcrute/golib/vault"
	"github.com/labstack/echo/v4"
)

// MakeVaultClient creates a VaultClient with default configuration and
// adds it to the service runner with a logger.
//
// Deprecated: Use MakeVaultSecretsClient and AttachSecretsClient instead.
func MakeVaultClient(ctx context.Context, runner *service.AppRunner, log echo.Logger) (vault.VaultClient, error) {
	certRenewal := make(chan *vault.Renewal, 10)

	c, err := vault.NewClientEnv(certRenewal)
	if err != nil {
		return nil, err
	}

	runner.AddJob(vault.MakeRenewalLogger(certRenewal, log))
	runner.AddJobRunNow(c.Run)

	if err = c.LoginApproleEnv(ctx); err != nil {
		return nil, err
	}

	return c, nil
}

// MakeVaultSecretsClient creates a secrets.ClientManager connected to
// Vault and authenticates it.
func MakeVaultSecretsClient(ctx context.Context) (secrets.ClientManager, error) {
	vc, err := secrets.NewVaultClient(&secrets.VaultClientConfig{})
	if err != nil {
		return nil, err
	}

	if err = vc.Authenticate(ctx); err != nil {
		return nil, err
	}

	return vc, nil
}

// AttachSecretsClient attaches a secrets client to a runner and
// configures logger and failure handler to run asynchronously. The
// failure handler will terminate the application if a critical
// credential renewal failure occurs.
func AttachSecretsClient(c secrets.ClientManager, cancel func(), run *service.AppRunner, log echo.Logger) {
	run.AddJob(func(ctx context.Context, wg *sync.WaitGroup) error {
		log.Info("Starting credential renewal handler")
		err := c.Run(ctx, wg)
		log.Info("Shutting down credential renewal handler")
		return err
	})
	run.AddJob(func(ctx context.Context, wg *sync.WaitGroup) error {
		log.Info("Starting credential renewal logger")
		err := secrets.MakeRenewalLogger(c, log, cancel)(ctx, wg)
		log.Info("Shutting down credential renewal logger")
		return err
	})
}