package main

import (
	"context"
	"fmt"
	"strings"
)

type Quiz struct {
	Question string   `json:"Question"`
	Answers  []string `json:"Answers"`
}

// 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) FetchQuizzes() []Quiz {
	return []Quiz{
		{
			Question: "Quanto fa 1+1?",
			Answers:  []string{"2", "3", "4", "5"},
		},
		{
			Question: "Quanto fa 3·2?",
			Answers:  []string{"6", "3", "4", "5"},
		},
	}
}

func (a *App) Markdown(quiz Quiz) string {
	question := fmt.Sprintf("# %s\n\n", quiz.Question)
	answers := make([]string, len(quiz.Answers))
	for i, answer := range quiz.Answers {
		answers[i] = fmt.Sprintf("- %s", answer)
	}
	return question + strings.Join(answers, "\n")
}

func (a *App) ParseMarkdown(markdown string) Quiz {
	lines := strings.Split(markdown, "\n")
	question := ""
	answers := []string{}

	for _, line := range lines {
		trimmedLine := strings.TrimSpace(line)
		if trimmedLine == "" {
			continue
		}

		if strings.HasPrefix(trimmedLine, "#") {
			question = strings.TrimPrefix(trimmedLine, "#")
			question = strings.TrimSpace(question)
		} else if strings.HasPrefix(trimmedLine, "-") {
			answer := strings.TrimPrefix(trimmedLine, "-")
			answer = strings.TrimSpace(answer)
			answers = append(answers, answer)
		}
	}

	return Quiz{
		Question: question,
		Answers:  answers,
	}
}