require 'rails_helper'

RSpec.describe PostCreatePlan do
  def create_tag! name, category
    create(:tag, name:, category:)
  end

  before do
    create_tag!('タグ希望', :meta)
    create_tag!('ニジラー情報不詳', :meta)
  end

  context 'with an explicit locale' do
    include_context 'English locale'

    it 'resolves the matching language identity and its parents' do
      english_name = create(:tag_name, name: 'shared_name',
                                      language_code: 'en', script_code: 'Latn')
      english = create(:tag, tag_name: english_name, category: :character)
      japanese = create(:tag, name: 'temporary_japanese', category: :general)
      # The DB permits this identity; validation has its own contract spec.
      japanese.tag_name.update_columns(name: 'shared_name')
      english_parent = create(:tag, name: 'english_parent', category: :material)
      japanese_parent = create(:tag, name: 'japanese_parent', category: :general)
      TagImplication.create!(tag: english, parent_tag: english_parent)
      TagImplication.create!(tag: japanese, parent_tag: japanese_parent)

      plan = described_class.new(attributes: { tags: 'shared_name' }).build!(locale)

      expect(plan[:direct_tag_specs]).to eq(
          [{ name: 'shared_name', category: :character }])
      expect(plan[:post_tag_specs]).to include(
          { name: english_parent.name, category: :material })
      expect(plan[:post_tag_specs].pluck(:name)).not_to include(japanese_parent.name)
    end

    it 'resolves aliases within the requested language' do
      japanese = create(:tag, name: 'japanese_canonical')
      english_name = create(:tag_name, name: 'english_canonical',
                                      language_code: 'en', script_code: 'Latn')
      english = create(:tag, tag_name: english_name, category: :character)
      japanese_alias = create(:tag_name, :alias, name: 'shared_alias',
                                                canonical: japanese.tag_name)
      english_alias = create(:tag_name, :alias, name: 'temporary_alias',
                                               canonical: english_name,
                                               language_code: 'en', script_code: 'Latn')
      english_alias.update_columns(name: 'shared_alias')

      expect(japanese_alias.reload).to have_attributes(
          canonical_id: japanese.tag_name_id, tag_id: japanese.id,
          primary_flg: false, language_code: 'ja')
      expect(english_alias.reload).to have_attributes(
          canonical_id: english_name.id, tag_id: english.id,
          primary_flg: false, language_code: 'en')

      plan = described_class.new(attributes: { tags: 'shared_alias' }).build!(locale)

      expect(plan[:direct_tag_specs]).to eq(
          [{ name: english.name, category: :character }])
    end
  end

  it 'plans direct and existing default tags without persisting records' do
    counts = [TagName.count, Tag.count]

    plan = described_class.new(
        attributes: {
            url: 'https://example.com/post',
            title: 'title',
            tags: 'character:new_character',
            parent_post_ids: '' }).build!(Locale.nipponese)

    expect(plan[:tags]).to eq('new_character')
    expect(plan[:direct_tag_specs]).to eq(
        [{ name: 'new_character', category: :character }])
    expect(plan[:default_tag_specs]).to include(
        { name: 'タグ希望', category: :meta },
        { name: 'ニジラー情報不詳', category: :meta })
    expect([TagName.count, Tag.count]).to eq(counts)
  end

  it 'resolves aliases and keeps tag sections separate from canonical names' do
    canonical = create_tag!('虹夏', :character)
    create(:tag_name, :alias, name: 'にじか', canonical: canonical.tag_name)
    create_tag!('動画', :meta)

    plan = described_class.new(
        attributes: {
            url: 'https://example.com/video',
            title: 'video',
            tags: '動画 にじか[0:10-0:20]',
            duration: '1:00',
            parent_post_ids: '' }).build!(Locale.nipponese)

    expect(plan[:tags].split).to include('動画', '虹夏[0:10-0:20]')
    expect(plan[:display_tags]).to include(
        { name: '虹夏',
          category: 'character',
          section_literals: ['[0:10-0:20]'] })
    expect(plan[:video_ms]).to eq(60_000)
  end

  it 'rejects direct external tag input without creating internal records' do
    create(:external_tag, name: 'reserved')
    counts = [Tag.count, TagName.count, ExternalTag.count]

    expect {
      described_class.new(attributes: { tags: 'NiCo:reserved' }).build!(Locale.nipponese)
    }.to raise_error(ActiveRecord::RecordInvalid) { |error|
      expect(error.record.errors[:tags]).to be_present
    }

    expect([Tag.count, TagName.count, ExternalTag.count]).to eq(counts)
  end

  it 'validates a new tag name without persisting it' do
    long_name = 'a' * 256
    counts = [TagName.count, Tag.count]

    expect {
      described_class.new(
          attributes: {
              url: 'https://example.com/post',
              title: 'title',
              tags: long_name,
              parent_post_ids: '' }).build!(Locale.nipponese)
    }.to raise_error(ActiveRecord::RecordInvalid) { |error|
      expect(error.record.errors[:tags]).not_to be_empty
    }
    expect([TagName.count, Tag.count]).to eq(counts)
  end

  it 'ignores duration when the planned tags do not include video' do
    plan = described_class.new(
        attributes: {
            url: 'https://example.com/post',
            title: 'title',
            tags: 'ordinary_tag',
            duration: 'invalid',
            parent_post_ids: '' }).build!(Locale.nipponese)

    expect(plan[:duration]).to eq('invalid')
    expect(plan[:video_ms]).to be_nil
  end
end