require 'nokogiri'
require 'open-uri'
require 'qiita'
require 'slack/incoming/webhooks'


# Qiita投稿前に書き換えるものはグローバル変数にしておこう(悪手)
$incoming_url  = 'secret'
$qiita_token   = 'secret'
$qiita_item_id = '9f34f79aee34f5fc56ed'

def scraping()
    charset = nil
    url = 'https://bookwalker.jp/ex/feature/watamote-vote/'
    html = open(url) do |f|
        charset = f.charset
        f.read
    end

    members = []
    doc = Nokogiri::HTML.parse(html, nil, charset)
    doc.css('.vote-box').each do |vote|
        members.push({
            rank: url + vote.css('.rank-box>img').first.attributes['src'].value,
            name: vote.css('.border').first.attributes['alt'].value,
            icon: icon = url +  vote.css('.border').first.attributes['src'].value,
        })
    end
    members
end

def makeAttachments(members)
    attachments = []
    members.each do |member|
        attachments.push({
            author_name: member[:name],
            image_url: member[:icon],
            author_icon: member[:rank],
        })
    end
    attachments
end

def postSlack(attachments)
    incoming_url = $incoming_url
    channel      = '#hitorigoto'
    username     = 'bot'
    slack = Slack::Incoming::Webhooks.new incoming_url, channel: channel, username: username, attachments: attachments
    slack.attachments = attachments
    slack.post "もこっちとくっつくのは誰だ!?選手権\nhttps://bookwalker.jp/ex/feature/watamote-vote/"
end

def postQiita(body)
    title = 'RubyのNokogiriでスクレイピングしてSlackに通知&Qiita記事更新'
    client = Qiita::Client.new(access_token: $qiita_token)
    client.patch('/api/v2/items/' + $qiita_item_id, title: title, body: body)
end

def makeBody(members)
    ranking = <<~EOT
    | ランク | エントリー |
    |:-:|:-:|
    EOT
    members.each do |member|
        ranking = ranking + "|<img src=\"#{member[:rank]}\">|<img src=\"#{member[:icon]}\">|\n"
    end
    ranking

    client = Qiita::Client.new(access_token: $qiita_token)
    body = client.get_item($qiita_item_id).body['body']
    body.gsub(/(?<=\*{10}\n).*/m, ranking)
end


# rubyはメソッドを先に宣言しておかないといけない
members = scraping()

attachments = makeAttachments(members)
postSlack(attachments)

body = makeBody(members)
#p body
res = postQiita(body)
#p res