// Package pocketbase is the placeholder for the PocketBase storage driver.
//
// The plan (PLAN.md section 4) is an appliance deployment: one binary that
// also brings admin auth, a filesystem abstraction for media (local or S3)
// and realtime for the admin panel. The event DAG is a poor fit for
// PocketBase's record model, so the roomserver and syncapi tables will use
// its underlying dbx connection directly rather than its collection API.
//
// Until that work starts (Phase 10) the driver is compiled in, registered
// and fails loudly, so that `database.driver: pocketbase` is a clear error
// instead of an unknown-driver one, and so the interface stays honest:
// every method the other drivers implement exists here too.
package pocketbase

import (
	"context"
	"fmt"
	"log/slog"

	"github.com/dariuszjaniak/warp/server/internal/storage"
)

func init() {
	storage.Register(storage.DriverPocketBase, Open)
}

// Database is the not-yet-implemented PocketBase driver.
type Database struct{}

// Open always fails with storage.ErrNotImplemented.
func Open(context.Context, storage.Config, *slog.Logger) (storage.Database, error) {
	return nil, fmt.Errorf(
		"pocketbase driver is not implemented yet (planned for Phase 10); use %q or %q: %w",
		storage.DriverSQLite, storage.DriverPostgres, storage.ErrNotImplemented)
}

// Driver implements storage.Database.
func (*Database) Driver() string { return storage.DriverPocketBase }

// Ping implements storage.Database.
func (*Database) Ping(context.Context) error { return storage.ErrNotImplemented }

// Migrate implements storage.Database.
func (*Database) Migrate(context.Context) error { return storage.ErrNotImplemented }

// PendingMigrations implements storage.Database.
func (*Database) PendingMigrations(context.Context) ([]string, error) {
	return nil, storage.ErrNotImplemented
}

// Settings implements storage.Database.
func (*Database) Settings() storage.SettingsStore { return notImplementedSettings{} }

// Users implements storage.Database.
func (*Database) Users() storage.UserStore { return notImplementedUsers{} }

// Close implements storage.Database.
func (*Database) Close() error { return nil }

// notImplementedSettings satisfies storage.SettingsStore by refusing every
// call, so a partially wired-up PocketBase deployment cannot silently lose
// an admin's federation switch.
type notImplementedSettings struct{}

func (notImplementedSettings) Get(context.Context, string) (string, bool, error) {
	return "", false, storage.ErrNotImplemented
}

func (notImplementedSettings) GetAll(context.Context) (map[string]string, error) {
	return nil, storage.ErrNotImplemented
}

func (notImplementedSettings) Set(context.Context, string, string) error {
	return storage.ErrNotImplemented
}

func (notImplementedSettings) Delete(context.Context, string) error {
	return storage.ErrNotImplemented
}

// notImplementedUsers satisfies storage.UserStore the same way: a
// half-wired PocketBase deployment must not accept a registration it cannot
// store, or hand out an access token it cannot look up again.
type notImplementedUsers struct{}

func (notImplementedUsers) CreateAccount(context.Context, storage.NewAccount) (storage.Account, error) {
	return storage.Account{}, storage.ErrNotImplemented
}

func (notImplementedUsers) Account(context.Context, string) (storage.Account, error) {
	return storage.Account{}, storage.ErrNotImplemented
}

func (notImplementedUsers) PasswordHash(context.Context, string) (string, error) {
	return "", storage.ErrNotImplemented
}

func (notImplementedUsers) SetPasswordHash(context.Context, string, string) error {
	return storage.ErrNotImplemented
}

func (notImplementedUsers) SetAdmin(context.Context, string, bool) error {
	return storage.ErrNotImplemented
}

func (notImplementedUsers) SetDisplayName(context.Context, string, string) error {
	return storage.ErrNotImplemented
}

func (notImplementedUsers) SetAvatarURL(context.Context, string, string) error {
	return storage.ErrNotImplemented
}

func (notImplementedUsers) ListAccounts(context.Context, storage.AccountFilter) ([]storage.Account, int, error) {
	return nil, 0, storage.ErrNotImplemented
}

func (notImplementedUsers) Stats(context.Context) (storage.Stats, error) {
	return storage.Stats{}, storage.ErrNotImplemented
}

func (notImplementedUsers) CreateSession(context.Context, storage.NewSession) (storage.Device, error) {
	return storage.Device{}, storage.ErrNotImplemented
}

func (notImplementedUsers) RefreshSession(context.Context, storage.RefreshedSession) (storage.TokenInfo, error) {
	return storage.TokenInfo{}, storage.ErrNotImplemented
}

func (notImplementedUsers) TokenInfo(context.Context, string) (storage.TokenInfo, error) {
	return storage.TokenInfo{}, storage.ErrNotImplemented
}

func (notImplementedUsers) TouchDevice(context.Context, string, string, string, string, int64) error {
	return storage.ErrNotImplemented
}

func (notImplementedUsers) Device(context.Context, string, string) (storage.Device, error) {
	return storage.Device{}, storage.ErrNotImplemented
}

func (notImplementedUsers) Devices(context.Context, string) ([]storage.Device, error) {
	return nil, storage.ErrNotImplemented
}

func (notImplementedUsers) SetDeviceDisplayName(context.Context, string, string, string) error {
	return storage.ErrNotImplemented
}

func (notImplementedUsers) DeleteDevices(context.Context, string, []string) (int, error) {
	return 0, storage.ErrNotImplemented
}

func (notImplementedUsers) DeleteAllDevices(context.Context, string) (int, error) {
	return 0, storage.ErrNotImplemented
}

func (notImplementedUsers) AccountData(context.Context, string, string, string) ([]byte, error) {
	return nil, storage.ErrNotImplemented
}

func (notImplementedUsers) SetAccountData(context.Context, string, string, string, []byte) error {
	return storage.ErrNotImplemented
}

// Compile-time proof that the stub keeps up with the interfaces.
var (
	_ storage.Database  = (*Database)(nil)
	_ storage.UserStore = notImplementedUsers{}
)