import random

import factory
import wagtail_factories
from factory import CREATE_STRATEGY
from wagtail.core.rich_text import RichText

from book.blocks import BasicKnowledgeBlock, StudentEntryBlock, ImageUrlBlock
from book.models import Book, Topic, Module, Chapter, ContentBlock, TextBlock
from core.factories import BasePageFactory, fake, DummyImageFactory, fake_paragraph, fake_title


class BookFactory(BasePageFactory):
    class Meta:
        model = Book


class TopicFactory(BasePageFactory):
    class Meta:
        model = Topic

    order = 0
    teaser = factory.LazyAttribute(lambda x: fake.sentence(nb_words=random.randint(8, 12)))
    description = factory.LazyAttribute(lambda x: fake.text(max_nb_chars=200))


class ModuleFactory(BasePageFactory):
    class Meta:
        model = Module

    order = 0
    meta_title = factory.LazyAttribute(lambda x: fake.text(max_nb_chars=20))
    teaser = factory.LazyAttribute(lambda x: fake.sentence(nb_words=random.randint(8, 12)))
    intro = factory.LazyAttribute(lambda x: fake.text(max_nb_chars=200))

    hero_image = factory.SubFactory(DummyImageFactory)


class ChapterFactory(BasePageFactory):
    class Meta:
        model = Chapter


class TextBlockFactory(wagtail_factories.StructBlockFactory):
    text = factory.LazyAttribute(fake_paragraph)

    class Meta:
        model = TextBlock


class BasicKnowledgeBlockFactory(wagtail_factories.StructBlockFactory):
    description = factory.LazyAttribute(fake_paragraph)
    url = factory.LazyAttribute(lambda x: fake.uri())

    class Meta:
        model = BasicKnowledgeBlock


class ImageUrlBlockBlockFactory(wagtail_factories.StructBlockFactory):
    title = fake_title()
    url = factory.LazyAttribute(lambda x: 'https://picsum.photos/200/300/?random')

    class Meta:
        model = ImageUrlBlock


class StudentEntryBlockFactory(wagtail_factories.StructBlockFactory):

    class Meta:
        model = StudentEntryBlock


block_types = ['text_block', 'basic_knowledge', 'student_entry', 'image_block', 'task']


class ContentBlockFactory(BasePageFactory):
    class Meta:
        model = ContentBlock

    type = factory.LazyAttribute(lambda x: random.choice(['plain', 'yellow', 'green', 'blue']))

    contents = wagtail_factories.StreamFieldFactory({
        'text_block': TextBlockFactory,
        'basic_knowledge': BasicKnowledgeBlockFactory,
        'student_entry': StudentEntryBlockFactory,
        'image_block': wagtail_factories.ImageChooserBlockFactory,
        'task': TextBlockFactory
    })

    @classmethod
    def stream_field_magic(cls, kwargs, stream_field_name):
        if stream_field_name in kwargs:
            for idx, resource in enumerate(kwargs[stream_field_name]):
                value = resource['value']
                for jdx, field in enumerate(value):
                    block_type = resource['type']
                    if block_type == 'text_block':
                        kwargs['{}__{}__{}__{}'.format(stream_field_name, idx, block_type, field)] = RichText(value[field])
                    if block_type == 'task':
                        kwargs['{}__{}__{}__{}'.format(stream_field_name, idx, block_type, field)] = RichText(value[field])
                    elif block_type == 'image_block':
                        kwargs['{}__{}__{}__{}'.format(stream_field_name, idx, block_type, 'image__title')] = fake_paragraph()

                    # image file
                    #
                    # kwargs['{}__{}__{}__{}'.format(stream_field_name, i, 'image_block', )] = fake_paragraph()

            del kwargs[stream_field_name]
        else:
            for i in range(0, random.randint(3, 7)):
                block_type = random.choice(block_types)
                if block_type == 'text_block':
                    kwargs['{}__{}__{}__{}'.format(stream_field_name, i, 'text_block', 'text')] = RichText(fake_paragraph())
                elif block_type == 'basic_knowledge':
                    kwargs['{}__{}__{}__{}'.format(stream_field_name, i, 'basic_knowledge', 'description')] = RichText(fake_paragraph())
                    # kwargs['{}__{}__{}__{}'.format(stream_field_name, i, 'basic_knowledge', 'description')] = ..url..
                elif block_type == 'student_entry':
                    kwargs['{}__{}__{}__{}'.format(stream_field_name, i, 'student_entry', 'task_text')] = RichText(fake_paragraph())
                elif block_type == 'image_block':
                    kwargs['{}__{}__{}__{}'.format(stream_field_name, i, 'image_block', 'image__title')] = fake_paragraph()
                elif block_type == 'task':
                    kwargs['{}__{}__{}__{}'.format(stream_field_name, i, 'task', 'text')] = RichText(fake_paragraph())

    @classmethod
    def create(cls, **kwargs):
        cls.stream_field_magic(kwargs, 'contents')
        return cls._generate(CREATE_STRATEGY, kwargs)