package main

import (
	"encoding/json"
	"os"
)

type ScoreSet struct {
	Name   string            `json:"name"`
	Type   string            `json:"type,omitempty"`
	Shapes []ShapeDefinition `json:"shapes"`
}

type ScoreSetsData struct {
	Sets     []ScoreSet `json:"sets"`
	Selected int        `json:"selected"`
}

func DefaultScoreSetsData() ScoreSetsData {
	return ScoreSetsData{
		Sets: []ScoreSet{
			{Name: "Standard Shapes", Shapes: DefaultShapes()},
			{Name: "Chord Density", Type: "density", Shapes: DefaultShapes()},
		},
		Selected: 0,
	}
}

func LoadScoreSets(path string) (ScoreSetsData, error) {
	var data ScoreSetsData
	raw, err := os.ReadFile(path)
	if err != nil {
		return data, err
	}
	err = json.Unmarshal(raw, &data)
	if err != nil {
		return data, err
	}
	if len(data.Sets) == 0 {
		return DefaultScoreSetsData(), nil
	}
	if data.Selected < 0 || data.Selected >= len(data.Sets) {
		data.Selected = 0
	}
	return data, nil
}

func SaveScoreSets(path string, data ScoreSetsData) error {
	raw, err := json.MarshalIndent(data, "", "  ")
	if err != nil {
		return err
	}
	return os.WriteFile(path, raw, 0644)
}