// This file is part of Gopher2600.
//
// Gopher2600 is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Gopher2600 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Gopher2600.  If not, see <https://www.gnu.org/licenses/>.

package sdlaudio

import (
	"github.com/jetsetilly/gopher2600/prefs"
	"github.com/jetsetilly/gopher2600/resources"
)

type Preferences struct {
	dsk        *prefs.Disk
	Stereo     prefs.Bool
	Separation prefs.Int
}

func (p *Preferences) String() string {
	return p.dsk.String()
}

// NewPreferences is the preferred method of initialisation for the Preferences type.
func NewPreferences() (*Preferences, error) {
	p := &Preferences{}
	p.SetDefaults()

	pth, err := resources.JoinPath(prefs.DefaultPrefsFile)
	if err != nil {
		return nil, err
	}

	p.dsk, err = prefs.NewDisk(pth)
	if err != nil {
		return nil, err
	}

	err = p.dsk.Add("sdlaudio.stereo", &p.Stereo)
	if err != nil {
		return nil, err
	}
	err = p.dsk.Add("sdlaudio.separation", &p.Separation)
	if err != nil {
		return nil, err
	}

	err = p.dsk.Load(true)
	if err != nil {
		return nil, err
	}

	return p, nil
}

// SetDefaults reverts all audio settings to default values.
func (p *Preferences) SetDefaults() {
	p.Stereo.Set(false)
	p.Separation.Set(1)
}

// Load disassembly preferences and apply to the current disassembly.
func (p *Preferences) Load() error {
	return p.dsk.Load(false)
}

// Save current disassembly preferences to disk.
func (p *Preferences) Save() error {
	return p.dsk.Save()
}