package component

import (
	"bytes"
	"context"
	"fmt"
	"forge.cadoles.com/wpetit/kouiz/internal/http/form"
	common "forge.cadoles.com/wpetit/kouiz/internal/http/handler/webui/common/component"
	"forge.cadoles.com/wpetit/kouiz/internal/store"
	"github.com/pkg/errors"
	"github.com/yuin/goldmark"
	"log/slog"
	"slices"
	"strconv"
	"time"
)

type QuizPageVModel struct {
	Player      *store.Player
	CurrentTurn *store.QuizTurn
	PlayDelay   time.Duration
}

func NewSelectEntryForm() *form.Form {
	return form.New(
		form.NewField(
			"entry",
			form.Attrs{},
			form.NonEmpty("Ce champ ne doit pas être vide."),
		),
	)
}

func NewAnswerForm() *form.Form {
	return form.New(
		form.NewField(
			"answer",
			form.Attrs{},
			form.NonEmpty("Ce champ ne doit pas être vide."),
		),
	)
}

templ QuizPage(vmodel QuizPageVModel) {
	@common.AppPage(common.WithPageOptions(
		common.WithTitle(fmt.Sprintf("Tour #%d", vmodel.CurrentTurn.ID)),
	)) {
		<h2 class="title is-size-3">Tour #{ strconv.FormatUint(uint64(vmodel.CurrentTurn.ID), 10) }</h2>
		if vmodel.Player.PlayedAt.After(vmodel.CurrentTurn.StartedAt) {
			<div class="content has-text-centered is-size-5">
				<p><strong>Vous avez déjà joué ce tour ci !</strong></p>
				<p>Le prochain tour commencera dans { vmodel.CurrentTurn.EndedAt.Sub(time.Now().UTC()).Round(time.Second).String() }.</p>
			</div>
		} else if vmodel.Player.SelectedEntry == nil || vmodel.Player.SelectedTurn == nil || *vmodel.Player.SelectedTurn != vmodel.CurrentTurn.ID {
			@QuizQuestionSelector(vmodel)
		} else {
			@QuizQuestion(vmodel)
		}
	}
}

templ QuizQuestionSelector(vmodel QuizPageVModel) {
	<form action={ common.BaseURL(ctx, common.WithPath("/quiz/select")) } method="post">
		<h3 class="title is-size-3">Choisissez votre prochaine question</h3>
		<div class="message is-info">
			<div class="message-body">
				<p>
					<strong>Attention</strong>, une fois la thématique sélectionnée vous aurez <strong>{ vmodel.PlayDelay.String() } pour répondre</strong>. Faites le bon choix !
				</p>
			</div>
		</div>
		for _, entry := range vmodel.CurrentTurn.Entries {
			<div class="box">
				<div class="level mx-5">
					<div class="level-left">
						<div class="level-item">
							<div class="content">
								<p class="title">
									{ entry.Category.Theme }
								</p>
								<p class="subtitle">{ entry.Category.Name }</p>
								<div class="content is-italic">
									<p>{ entry.Category.Description }</p>
								</div>
							</div>
						</div>
					</div>
					<div class="level-right">
						<div class="level-item">
							<div class="content">
								<p class="is-size-4 is-family-secondary has-text-right" style="width:300px">
									<span></span> <span class="has-text-weight-bold">{ difficultyLevel(entry.Level) }</span>
									<br/>
									<span>+{ strconv.FormatInt(int64((entry.Level+1)*2), 10) } points</span>
								</p>
							</div>
						</div>
						<div class="level-item">
							<button class="button is-large ml-5" name="entry" value={ strconv.FormatInt(int64(entry.ID), 10) }>
								<span class="icon"><i class="fas fa-chevron-right"></i></span>
							</button>
						</div>
					</div>
				</div>
			</div>
		}
	</form>
}

templ QuizQuestion(vmodel QuizPageVModel) {
	{{
		selectedEntryIndex := slices.IndexFunc(vmodel.CurrentTurn.Entries, func(e *store.QuizEntry) bool {
			return vmodel.Player.SelectedEntry != nil && *vmodel.Player.SelectedEntry == e.ID
		})
	}}
	{{ selectedEntry := vmodel.CurrentTurn.Entries[selectedEntryIndex] }}
	<div class="content">
		<p class="title is-size-3">
			{ selectedEntry.Question }
		</p>
		<p class="subtitle">{ selectedEntry.Category.Name } - { selectedEntry.Category.Theme }</p>
	</div>
	<form action={ common.BaseURL(ctx, common.WithPath("/quiz/answer")) } method="post">
		for index, proposition := range selectedEntry.Propositions {
			<div class="box">
				<div class="level">
					<div class="level-left">
						<div class="level-item">
							<div class="content">
								<p class="has-font-weight-bold is-size-4">
									<span class="has-text-grey	">{ strconv.FormatInt(int64(index), 10) }.</span> <span class="is-family-secondary">{ proposition }</span>
								</p>
							</div>
						</div>
					</div>
					<div class="level-right">
						<div class="level-item">
							<button class="button is-large ml-5" name="answer" value={ strconv.FormatInt(int64(index), 10) }>
								<span class="icon"><i class="fas fa-chevron-right"></i></span>
							</button>
						</div>
					</div>
				</div>
			</div>
		}
	</form>
	{{ remainingSeconds := vmodel.Player.SelectedAt.Add(vmodel.PlayDelay).Sub(time.Now().UTC()).Seconds() }}
	<progress id="question-timer" class="progress is-info is-small mt-5" value={ strconv.FormatInt(int64(remainingSeconds), 10) } max={ strconv.FormatInt(int64(remainingSeconds), 10) }></progress>
	<script>
		(function(){
			const element = document.getElementById("question-timer")
			const updateProgress = () => {
				element.value = parseInt(element.value)-1;
				setTimeout(updateProgress, 1000);
			};
			setTimeout(updateProgress, 1000);
		}());
	</script>
}

func difficultyLevel(level uint) string {
	switch level {
	case 0:
		return "Débutant"
	case 1:
		return "Confirmé"
	case 2:
		return "Expert"
	default:
		return fmt.Sprintf("Hors catégorie (%d)", level)
	}
}

func markdownToHTML(ctx context.Context, text string) string {
	var buff bytes.Buffer
	if err := goldmark.Convert([]byte(text), &buff); err != nil {
		slog.ErrorContext(ctx, "could not convert markdown to html", slog.Any("error", errors.WithStack(err)))
		return ""
	}

	return buff.String()
}