package ports

import (
	"context"
	"fmt"

	"galaxy/user/internal/domain/account"
	"galaxy/user/internal/domain/common"
)

// CreateAccountInput stores the atomic account-create state that must commit
// together.
type CreateAccountInput struct {
	// Account stores the durable user-account state.
	Account account.UserAccount
}

// Validate reports whether CreateAccountInput is structurally complete.
func (input CreateAccountInput) Validate() error {
	if err := input.Account.Validate(); err != nil {
		return fmt.Errorf("create account input account: %w", err)
	}

	return nil
}

// UserAccountStore persists source-of-truth user-account records and their
// exact lookup mappings.
type UserAccountStore interface {
	// Create stores one new account record. Implementations must wrap
	// ErrConflict when the user id, e-mail, or exact user-name lookup already
	// exists.
	Create(ctx context.Context, input CreateAccountInput) error

	// GetByUserID returns the stored account identified by userID.
	GetByUserID(ctx context.Context, userID common.UserID) (account.UserAccount, error)

	// GetByEmail returns the stored account identified by the normalized e-mail
	// address.
	GetByEmail(ctx context.Context, email common.Email) (account.UserAccount, error)

	// GetByUserName returns the stored account identified by the exact stored
	// user name.
	GetByUserName(ctx context.Context, userName common.UserName) (account.UserAccount, error)

	// ExistsByUserID reports whether userID currently identifies a stored
	// account.
	ExistsByUserID(ctx context.Context, userID common.UserID) (bool, error)

	// Update replaces the stored account state for record.UserID.
	//
	// Implementations must wrap ErrConflict when the replacement record
	// attempts to mutate `user_name` or `email`.
	Update(ctx context.Context, record account.UserAccount) error
}