package persistence

import (
	"embed"
	"github.com/gobuffalo/pop/v6"
	"github.com/teamhanko/hanko/backend/config"
)

//go:embed migrations/*
var migrations embed.FS

// Persister is the persistence interface connecting to the database and capable of doing migrations
type persister struct {
	DB *pop.Connection
}

type Persister interface {
	GetConnection() *pop.Connection
	Transaction(func(tx *pop.Connection) error) error
	GetIdentityPersister() IdentityPersister
	GetIdentityPersisterWithConnection(tx *pop.Connection) IdentityPersister
	GetUserPersister() UserPersister
	GetUserPersisterWithConnection(tx *pop.Connection) UserPersister
	GetPasscodePersister() PasscodePersister
	GetPasscodePersisterWithConnection(tx *pop.Connection) PasscodePersister
	GetPasswordCredentialPersister() PasswordCredentialPersister
	GetPasswordCredentialPersisterWithConnection(tx *pop.Connection) PasswordCredentialPersister
	GetWebauthnCredentialPersister() WebauthnCredentialPersister
	GetWebauthnCredentialPersisterWithConnection(tx *pop.Connection) WebauthnCredentialPersister
	GetWebauthnSessionDataPersister() WebauthnSessionDataPersister
	GetWebauthnSessionDataPersisterWithConnection(tx *pop.Connection) WebauthnSessionDataPersister
	GetJwkPersister() JwkPersister
	GetJwkPersisterWithConnection(tx *pop.Connection) JwkPersister
	GetAuditLogPersister() AuditLogPersister
	GetAuditLogPersisterWithConnection(tx *pop.Connection) AuditLogPersister
	GetEmailPersister() EmailPersister
	GetEmailPersisterWithConnection(tx *pop.Connection) EmailPersister
	GetPrimaryEmailPersister() PrimaryEmailPersister
	GetPrimaryEmailPersisterWithConnection(tx *pop.Connection) PrimaryEmailPersister
}

type Migrator interface {
	MigrateUp() error
	MigrateDown(int) error
}

type Storage interface {
	Migrator
	Persister
}

// New return a new Persister Object with given configuration
func New(config config.Database) (Storage, error) {
	connectionDetails := &pop.ConnectionDetails{
		Pool:     5,
		IdlePool: 0,
	}
	if len(config.Url) > 0 {
		connectionDetails.URL = config.Url
	} else {
		connectionDetails.Dialect = config.Dialect
		connectionDetails.Database = config.Database
		connectionDetails.Host = config.Host
		connectionDetails.Port = config.Port
		connectionDetails.User = config.User
		connectionDetails.Password = config.Password
	}

	DB, err := pop.NewConnection(connectionDetails)

	if err != nil {
		return nil, err
	}

	if err := DB.Open(); err != nil {
		return nil, err
	}

	return &persister{
		DB: DB,
	}, nil
}

// MigrateUp applies all pending up migrations to the Database
func (p *persister) MigrateUp() error {
	migrationBox, err := pop.NewMigrationBox(migrations, p.DB)
	if err != nil {
		return err
	}
	err = migrationBox.Up()
	if err != nil {
		return err
	}
	return nil
}

// MigrateDown migrates the Database down by the given number of steps
func (p *persister) MigrateDown(steps int) error {
	migrationBox, err := pop.NewMigrationBox(migrations, p.DB)
	if err != nil {
		return err
	}
	err = migrationBox.Down(steps)
	if err != nil {
		return err
	}
	return nil
}

func (p *persister) GetConnection() *pop.Connection {
	return p.DB
}

func (p *persister) GetIdentityPersister() IdentityPersister {
	return NewIdentityPersister(p.DB)
}

func (p *persister) GetIdentityPersisterWithConnection(tx *pop.Connection) IdentityPersister {
	return NewIdentityPersister(tx)
}

func (p *persister) GetUserPersister() UserPersister {
	return NewUserPersister(p.DB)
}

func (p *persister) GetUserPersisterWithConnection(tx *pop.Connection) UserPersister {
	return NewUserPersister(tx)
}

func (p *persister) GetPasscodePersister() PasscodePersister {
	return NewPasscodePersister(p.DB)
}

func (p *persister) GetPasscodePersisterWithConnection(tx *pop.Connection) PasscodePersister {
	return NewPasscodePersister(tx)
}

func (p *persister) GetPasswordCredentialPersister() PasswordCredentialPersister {
	return NewPasswordCredentialPersister(p.DB)
}

func (p *persister) GetPasswordCredentialPersisterWithConnection(tx *pop.Connection) PasswordCredentialPersister {
	return NewPasswordCredentialPersister(tx)
}

func (p *persister) GetWebauthnCredentialPersister() WebauthnCredentialPersister {
	return NewWebauthnCredentialPersister(p.DB)
}

func (p *persister) GetWebauthnCredentialPersisterWithConnection(tx *pop.Connection) WebauthnCredentialPersister {
	return NewWebauthnCredentialPersister(tx)
}

func (p *persister) GetWebauthnSessionDataPersister() WebauthnSessionDataPersister {
	return NewWebauthnSessionDataPersister(p.DB)
}

func (p *persister) GetWebauthnSessionDataPersisterWithConnection(tx *pop.Connection) WebauthnSessionDataPersister {
	return NewWebauthnSessionDataPersister(tx)
}

func (p *persister) GetJwkPersister() JwkPersister {
	return NewJwkPersister(p.DB)
}

func (p *persister) GetJwkPersisterWithConnection(tx *pop.Connection) JwkPersister {
	return NewJwkPersister(tx)
}

func (p *persister) GetAuditLogPersister() AuditLogPersister {
	return NewAuditLogPersister(p.DB)
}

func (p *persister) GetAuditLogPersisterWithConnection(tx *pop.Connection) AuditLogPersister {
	return NewAuditLogPersister(tx)
}

func (p *persister) GetEmailPersister() EmailPersister {
	return NewEmailPersister(p.DB)
}

func (p *persister) GetEmailPersisterWithConnection(tx *pop.Connection) EmailPersister {
	return NewEmailPersister(tx)
}

func (p *persister) GetPrimaryEmailPersister() PrimaryEmailPersister {
	return NewPrimaryEmailPersister(p.DB)
}

func (p *persister) GetPrimaryEmailPersisterWithConnection(tx *pop.Connection) PrimaryEmailPersister {
	return NewPrimaryEmailPersister(tx)
}

func (p *persister) Transaction(fn func(tx *pop.Connection) error) error {
	return p.DB.Transaction(fn)
}