package appearances

import (
	"fmt"

	"eq2emu/internal/database"
)

// Appearance represents a single appearance with ID, name, and client version requirements
type Appearance struct {
	ID        int32  `json:"id"`         // Appearance ID
	Name      string `json:"name"`       // Appearance name
	MinClient int16  `json:"min_client"` // Minimum client version required

	db    *database.Database `json:"-"` // Database connection
	isNew bool               `json:"-"` // Whether this is a new appearance
}

// New creates a new appearance with the given database
func New(db *database.Database) *Appearance {
	return &Appearance{
		db:    db,
		isNew: true,
	}
}

// NewWithData creates a new appearance with data
func NewWithData(id int32, name string, minClientVersion int16, db *database.Database) *Appearance {
	return &Appearance{
		ID:        id,
		Name:      name,
		MinClient: minClientVersion,
		db:        db,
		isNew:     true,
	}
}

// Load loads an appearance by ID from the database
func Load(db *database.Database, id int32) (*Appearance, error) {
	appearance := &Appearance{
		db:    db,
		isNew: false,
	}

	query := `SELECT appearance_id, name, min_client_version FROM appearances WHERE appearance_id = ?`
	row := db.QueryRow(query, id)

	err := row.Scan(&appearance.ID, &appearance.Name, &appearance.MinClient)
	if err != nil {
		return nil, fmt.Errorf("failed to load appearance %d: %w", id, err)
	}

	return appearance, nil
}

// GetID returns the appearance ID (implements Identifiable interface)
func (a *Appearance) GetID() int32 {
	return a.ID
}

// GetName returns the appearance name
func (a *Appearance) GetName() string {
	return a.Name
}

// GetMinClientVersion returns the minimum client version required
func (a *Appearance) GetMinClientVersion() int16 {
	return a.MinClient
}

// GetNameString returns the name as a string (alias for GetName for C++ compatibility)
func (a *Appearance) GetNameString() string {
	return a.Name
}

// SetName sets the appearance name
func (a *Appearance) SetName(name string) {
	a.Name = name
}

// SetMinClientVersion sets the minimum client version
func (a *Appearance) SetMinClientVersion(version int16) {
	a.MinClient = version
}

// IsCompatibleWithClient returns true if the appearance is compatible with the given client version
func (a *Appearance) IsCompatibleWithClient(clientVersion int16) bool {
	return clientVersion >= a.MinClient
}

// IsNew returns true if this is a new appearance not yet saved to database
func (a *Appearance) IsNew() bool {
	return a.isNew
}

// Save saves the appearance to the database
func (a *Appearance) Save() error {
	if a.db == nil {
		return fmt.Errorf("no database connection available")
	}

	if a.isNew {
		return a.insert()
	}
	return a.update()
}

// Delete removes the appearance from the database
func (a *Appearance) Delete() error {
	if a.db == nil {
		return fmt.Errorf("no database connection available")
	}

	if a.isNew {
		return fmt.Errorf("cannot delete unsaved appearance")
	}

	query := `DELETE FROM appearances WHERE appearance_id = ?`
	_, err := a.db.Exec(query, a.ID)
	if err != nil {
		return fmt.Errorf("failed to delete appearance %d: %w", a.ID, err)
	}

	return nil
}

// Reload reloads the appearance data from the database
func (a *Appearance) Reload() error {
	if a.db == nil {
		return fmt.Errorf("no database connection available")
	}

	if a.isNew {
		return fmt.Errorf("cannot reload unsaved appearance")
	}

	query := `SELECT name, min_client_version FROM appearances WHERE appearance_id = ?`
	row := a.db.QueryRow(query, a.ID)

	err := row.Scan(&a.Name, &a.MinClient)
	if err != nil {
		return fmt.Errorf("failed to reload appearance %d: %w", a.ID, err)
	}

	return nil
}

// Clone creates a copy of the appearance
func (a *Appearance) Clone() *Appearance {
	return &Appearance{
		ID:        a.ID,
		Name:      a.Name,
		MinClient: a.MinClient,
		db:        a.db,
		isNew:     true, // Clone is always new
	}
}

// insert inserts a new appearance into the database
func (a *Appearance) insert() error {
	query := `INSERT INTO appearances (appearance_id, name, min_client_version) VALUES (?, ?, ?)`
	_, err := a.db.Exec(query, a.ID, a.Name, a.MinClient)
	if err != nil {
		return fmt.Errorf("failed to insert appearance: %w", err)
	}

	a.isNew = false
	return nil
}

// update updates an existing appearance in the database
func (a *Appearance) update() error {
	query := `UPDATE appearances SET name = ?, min_client_version = ? WHERE appearance_id = ?`
	result, err := a.db.Exec(query, a.Name, a.MinClient, a.ID)
	if err != nil {
		return fmt.Errorf("failed to update appearance: %w", err)
	}

	rowsAffected, err := result.RowsAffected()
	if err != nil {
		return fmt.Errorf("failed to get rows affected: %w", err)
	}

	if rowsAffected == 0 {
		return fmt.Errorf("appearance %d not found for update", a.ID)
	}

	return nil
}