package bootstrap

import (
	"bubble/types"
	"github.com/sirupsen/logrus"
	"gopkg.in/yaml.v3"
	"io/fs"
	"os"
	"path/filepath"
)

const ConfDir = "./confs/"

func LoadApplications() []types.PackageApplication {
	var apps []types.PackageApplication

	err := filepath.WalkDir(ConfDir, func(path string, d fs.DirEntry, err error) error {
		if err != nil || d == nil || d.IsDir() {
			return err
		}
		if filepath.Ext(d.Name()) != ".yaml" && filepath.Ext(d.Name()) != ".yml" {
			return nil
		}

		app, err := loadFromYAML(path)
		if err != nil {
			logrus.Errorf("Ошибка загрузки %s: %v", path, err)
			return nil
		}

		apps = append(apps, app)
		return nil
	})

	if err != nil {
		logrus.Fatal(err)
	}

	return apps
}

func loadFromYAML(filePath string) (types.PackageApplication, error) {
	var app types.PackageApplication

	data, err := os.ReadFile(filePath)
	if err != nil {
		return app, err
	}

	if err = yaml.Unmarshal(data, &app); err != nil {
		return app, err
	}

	app = connectVariables(app)
	return app, nil
}

// connectVariables — связывает поля с переменными по указателям
// и инициализирует Value = Default
func connectVariables(app types.PackageApplication) types.PackageApplication {
	varMap := make(map[string]*types.Variable)
	for i := range app.Variables {
		v := &app.Variables[i]
		v.Value = v.Default // сразу устанавливаем дефолт
		varMap[v.Name] = v
	}

	for i := range app.Sections {
		section := &app.Sections[i]
		for j := range section.Fields {
			field := &section.Fields[j]
			if v, exists := varMap[field.VariableName]; exists {
				field.Variable = v
				field.Active = true
			} else {
				logrus.Warnf("Переменная не найдена: %s (в поле %s)", field.VariableName, field.Name)
				// Создаём заглушку
				field.Variable = &types.Variable{
					Name:    field.VariableName,
					Type:    "string",
					Default: "",
					Value:   "",
				}
				field.Active = true
			}
		}
	}

	return app
}