require 'scraperwiki'
require 'petrify'
require 'csv'
require 'json'

class Site
  def self.generate
    # Home page
    summary = ScraperWiki.select("
      authority_name, status, decision, appeal_status, appeal_decision,
        count(*) as applications
      from applications
      group by authority_name, status, decision, appeal_status, appeal_decision
    ")
    
    q = ScraperWiki.select("
      scraped_at
      from applications
      order by scraped_at desc
      limit 1")

    last_updated = DateTime.parse(q[0]['scraped_at'])

    path = '.'
    Petrify.page(path, 'index', \
      { summary: summary, last_updated: last_updated })
    Petrify.csv(path, 'inlink-summary', summary)  

    # Generate a JSON file with all the data
    apps = ScraperWiki.select("* from applications")
    Petrify.file(path, 'data.json', apps.to_json)

    # New applications page
    apps = ScraperWiki.select("* from `applications`
      order by date_received desc limit 60")
    Petrify.page('new-applications', 'new-applications', { apps: apps, title: "New applications" })

    # Latest decisions page
    apps = ScraperWiki.select("* from `applications`
      order by date_decision desc limit 60")
    path = 'decisions'
    Petrify.page(path, 'decisions', { apps: apps, title: "Latest decisions" })
    Petrify.csv(path, 'inlink-decisions', apps)
    
    # Appeals page
    summary = ScraperWiki.select("
      authority_name, status, decision, appeal_status, appeal_decision,
        count(*) as applications
      from applications
      where (appeal_status is not null
      and appeal_status != 'Unknown')
      or status like '%appeal%'
      group by authority_name, appeal_status, appeal_decision
      collate nocase
    ")
    
    apps = ScraperWiki.select("
      * from applications  
      where (appeal_status is not null
      and appeal_status != 'Unknown')
      or status like '%appeal%'
      collate nocase
    ")
    
    path = 'appeals'
    Petrify.page(path, 'appeals', { summary: summary, apps: apps, title: "Appeals" })
    Petrify.csv(path, 'inlink-appeals', apps)  

    # Media page
    stories = CSV.read('media.csv', :headers => true )
    Petrify.page('media', 'media', { stories: stories, title: "Media" })

    # Authority pages
    auths = ScraperWiki.select("distinct(authority_name) as authority_name
      from applications")

    auths.each do |auth|
      summary = ScraperWiki.select("
        status, decision, appeal_status, appeal_decision, count(*) as qty
        from applications
        where authority_name = ?
        group by status, decision, appeal_status, appeal_decision
        ", auth['authority_name'])

      apps = ScraperWiki.select("* from applications where authority_name = ?
        order by date_received desc", auth['authority_name'])

      this_stories = stories.select do |story|
        if story['authorities']
          story['authorities'].match(auth['authority_name'])
        end
      end

      path = ['authorities', slug(auth['authority_name'])]
      Petrify.page(path, 'authority', \
        { apps: apps, auth: auth, summary: summary, stories: this_stories, title: auth['authority_name'] })
      Petrify.csv(path, slug(auth['authority_name']), apps)
    end
  end
end