package message

import (
	"context"

	"github.com/go-faster/errors"

	"github.com/gotd/td/telegram/message/entity"
	"github.com/gotd/td/telegram/message/styling"
	"github.com/gotd/td/tg"
)

// EditMessageBuilder creates edit message builder.
type EditMessageBuilder struct {
	builder *Builder
	id      int
}

func (b *EditMessageBuilder) editTextRequest(
	p tg.InputPeerClass,
	msg string,
	entities []tg.MessageEntityClass,
) *tg.MessagesEditMessageRequest {
	return &tg.MessagesEditMessageRequest{
		NoWebpage:    b.builder.noWebpage,
		Peer:         p,
		ID:           b.id,
		Message:      msg,
		ReplyMarkup:  b.builder.replyMarkup,
		Entities:     entities,
		ScheduleDate: b.builder.scheduleDate,
	}
}

// Text edits message.
func (b *EditMessageBuilder) Text(ctx context.Context, msg string) (tg.UpdatesClass, error) {
	p, err := b.builder.peer(ctx)
	if err != nil {
		return nil, errors.Wrap(err, "peer")
	}

	upd, err := b.builder.sender.editMessage(ctx, b.editTextRequest(p, msg, nil))
	if err != nil {
		return nil, errors.Wrap(err, "edit styled text message")
	}

	return upd, nil
}

// Textf formats and edits message .
func (b *EditMessageBuilder) Textf(ctx context.Context, format string, args ...interface{}) (tg.UpdatesClass, error) {
	return b.Text(ctx, formatMessage(format, args...))
}

// StyledText edits message using given message.
func (b *EditMessageBuilder) StyledText(ctx context.Context, texts ...StyledTextOption) (tg.UpdatesClass, error) {
	p, err := b.builder.peer(ctx)
	if err != nil {
		return nil, errors.Wrap(err, "peer")
	}

	tb := entity.Builder{}
	if err := styling.Perform(&tb, texts...); err != nil {
		return nil, err
	}
	msg, entities := tb.Complete()

	upd, err := b.builder.sender.editMessage(ctx, b.editTextRequest(p, msg, entities))
	if err != nil {
		return nil, errors.Wrap(err, "edit styled text message")
	}

	return upd, nil
}

// Media edits message using given media and text.
func (b *EditMessageBuilder) Media(ctx context.Context, media MediaOption) (tg.UpdatesClass, error) {
	p, err := b.builder.peer(ctx)
	if err != nil {
		return nil, errors.Wrap(err, "peer")
	}

	attachment, err := b.builder.applySingleMedia(ctx, p, media)
	if err != nil {
		return nil, err
	}

	req := b.editTextRequest(p, attachment.Message, attachment.Entities)
	req.Media = attachment.Media

	upd, err := b.builder.sender.editMessage(ctx, req)
	if err != nil {
		return nil, errors.Wrap(err, "send media")
	}

	return upd, nil
}

// Edit edits message by ID.
func (b *Builder) Edit(id int) *EditMessageBuilder {
	return &EditMessageBuilder{builder: b, id: id}
}