package state

import (
	"encoding/json"
	"errors"
	"os"
	"path/filepath"
	"time"
)

type Store struct {
	LastReminder    time.Time `json:"last_reminder"`
	LastUpdateCount int       `json:"last_update_count"`
	LastCheck       time.Time `json:"last_check"`
	LastSuccess     time.Time `json:"last_success"`
	LastSummary     string    `json:"last_summary"`
}

func Load(path string) (Store, error) {
	data, err := os.ReadFile(path)
	if errors.Is(err, os.ErrNotExist) {
		return Store{}, nil
	}
	if err != nil {
		return Store{}, err
	}

	var store Store
	if err := json.Unmarshal(data, &store); err != nil {
		return Store{}, err
	}
	return store, nil
}

func Save(path string, store Store) error {
	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
		return err
	}

	data, err := json.MarshalIndent(store, "", "  ")
	if err != nil {
		return err
	}
	data = append(data, '\n')
	return os.WriteFile(path, data, 0o644)
}