package main

import (
	"context"
	"log"

	"github.com/wailsapp/wails/v2/pkg/runtime"
	"lmika.dev/pkg/modash/moslice"
)

// App struct
type App struct {
	ctx context.Context
}

// NewApp creates a new App application struct
func NewApp() *App {
	return &App{}
}

// startup is called when the app starts. The context is saved
// so we can call the runtime methods
func (a *App) startup(ctx context.Context) {
	a.ctx = ctx
}

// Greet returns a greeting for the given name
func (a *App) ProcessText(req ProcessTextRequest) {
	filter, ok := TextFilters[req.Action]
	if !ok {
		log.Printf("Unknown filter: [%s]", req.Action)
		return
	}

	resp, err := moslice.MapWithError(req.Input, func(span TextSpan) (TextSpan, error) {
		outStr, err := filter(span.Text)
		if err != nil {
			return TextSpan{}, err
		}
		return TextSpan{
			Text: outStr,
			Pos:  span.Pos,
			Len:  span.Len,
		}, nil
	})
	if err != nil {
		log.Printf("Error running filter: %s", err)
		return
	}

	runtime.EventsEmit(a.ctx, "process-text-response", ProcessTextResponse{
		Output: resp,
	})
}