package main

import (
  "os"
  "encoding/json"
  "log"
)

type Conversion struct {
  PixelWidth int
  ColorDepth int
  DitherType int
  Width int
  Height int
}

type Settings struct {
  Source string
  Target string
  Include []string
  Base Conversion
  Exceptions map[string]Conversion
}

func LoadSettings(path string) Settings {
  var settings Settings

  config, err := os.ReadFile(path)
  if err != nil {
      log.Fatalf("invalid config path: %s", path)
  }

  err = json.Unmarshal(config, &settings)
  if err != nil {
      log.Fatalf("json format error:", err)
  }

  if len(settings.Include) == 0 {
    log.Fatalf("You must have at least 1 extesion in Include in ", path)
  }

  return settings
}