Core/Server/catalog.go

package main

import (
	"encoding/json"
	"os"
	"path/filepath"
	"strings"
)

type Catalog struct {
	Tiles []Tile
}

func (c *Catalog) LoadFile(filename string) error {
	pay, err := os.ReadFile(filename)
	if err != nil {
		return err
	}
	file := []map[string]any{}
	err = json.Unmarshal(pay, &file)
	if err != nil {
		return err
	}
	for _, m := range file {
		t := TileFromMap(m)
		if t == nil {
			continue
		}
		c.Tiles = append(c.Tiles, t)
	}
	return nil
}

func (c *Catalog) LoadTiles(dirname string) error {
	ls, err := os.ReadDir(dirname)
	if err != nil {
		return err
	}
	for _, ent := range ls {
		// Ignore: hidden, dirs, non json, template
		if strings.HasPrefix(ent.Name(), ".") || ent.IsDir() || !strings.HasSuffix(ent.Name(), ".json") || ent.Name() == "0_template.json" {
			continue
		}
		err = c.LoadFile(filepath.Join(dirname, ent.Name()))
		if err != nil {
			return err
		}
	}
	return nil
}

func (c *Catalog) FindByName(name string) (int, bool) {
	for idx, t := range c.Tiles {
		if t.Name() == name {
			return idx, true
		}
	}
	return 0, false
}

func (c *Catalog) Symbol(idx int) string {
	return c.Tiles[idx].Symbol()
}

func (c *Catalog) Color(idx int) string {
	return c.Tiles[idx].Color()
}

func (c *Catalog) Next(idx int) {
	c.Tiles[idx].Next()
}

func (c *Catalog) MakeTemplate(filename string) error {
	pay, err := json.MarshalIndent([]map[string]any{
		{
			"name":   "template",
			"symbol": "0",
			"color":  "BRI BRO ON BLA",
		},
		{
			"name": "animated-template",
			"symbols": []string{
				"1",
				"2",
				"3",
			},
			"colors": []string{
				"BRI RED ON BLA",
				"BRI GRE ON BLA",
				"BRI CYA ON BLA",
			},
			"update": []string{
				"time 150ms",
			},
		},
	}, "", "  ")
	if err != nil {
		return err
	}
	err = os.WriteFile(filename, pay, 0666)
	return err
}