Class: MetalArchives::Parsers::Band

Inherits:
Parser
  • Object
show all
Defined in:
lib/metal_archives/parsers/band.rb

Overview

Band parser

Class Method Summary collapse

Methods inherited from Parser

rewrite, sanitize

Class Method Details

.map_params(query) ⇒ Object

Map attributes to MA attributes

Returns Hash

params

Hash



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# File 'lib/metal_archives/parsers/band.rb', line 22

def map_params(query)
  params = {
    bandName: query[:name] || "",
    exactBandMatch: (query[:exact] ? 1 : 0),
    genre: query[:genre] || "",
    yearCreationFrom: query[:year]&.begin || "",
    yearCreationTo: query[:year]&.end || "",
    bandNotes: query[:comment] || "",
    status: map_status(query[:status]),
    themes: query[:lyrical_themes] || "",
    location: query[:location] || "",
    bandLabelName: query[:label] || "",
    indieLabelBand: (query[:independent] ? 1 : 0),
  }

  params[:country] = []
  Array(query[:country]).each do |country|
    params[:country] << (country.is_a?(ISO3166::Country) ? country.alpha2 : (country || ""))
  end
  params[:country] = params[:country].first if params[:country].size == 1

  params
end

.parse_html(response) ⇒ Object

Parse main HTML page

Returns Hash

Raises

  • MetalArchives::Errors::ParserError when parsing failed. Please report this error.



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# File 'lib/metal_archives/parsers/band.rb', line 54

def parse_html(response)
  # Set default props
  props = {
    name: nil,
    aliases: [],

    logo: nil,
    photo: nil,

    country: nil,
    location: nil,

    status: nil,
    date_formed: nil,
    years_active: [],
    independent: nil,

    genres: [],
    lyrical_themes: [],

    members: [],
  }

  doc = Nokogiri::HTML response

  props[:name] = sanitize doc.css("#band_info .band_name a").first.content

  # Logo
  unless doc.css(".band_name_img").empty?
    logo_uri = URI doc.css(".band_name_img img").first.attr("src")
    props[:logo] = rewrite(logo_uri)
  end

  # Photo
  unless doc.css(".band_img").empty?
    photo_uri = URI doc.css(".band_img img").first.attr("src")
    props[:photo] = rewrite(photo_uri)
  end

  doc.css("#band_stats dl").each do |dl|
    dl.search("dt").each do |dt|
      content = sanitize(dt.next_element.content)

      next if content == "N/A"

      case dt.content
      when "Country of origin:"
        props[:country] = Country.parse(sanitize(dt.next_element.css("a").first.content))
      when "Location:"
        props[:location] = content
      when "Status:"
        props[:status] = content.downcase.tr(" -", "_").to_sym
      when "Formed in:"
        props[:date_formed] = Parsers::Date.parse(content)
      when "Genre:"
        props[:genres] = Parsers::Genre.parse(content)
      when "Lyrical themes:"
        content.split(",").each do |theme|
          t = theme.split.map(&:capitalize)
          t.delete "(early)"
          t.delete "(later)"
          props[:lyrical_themes] << t.join(" ")
        end
      when /(Current|Last) label:/
        props[:independent] = (content == "Unsigned/independent")
        # TODO: label
      when "Years active:"
        content.split(",").each do |range|
          # Aliases
          range.scan(/\(as ([^)]*)\)/).each { |name| props[:aliases] << name.first }
          # Ranges
          props[:years_active] << Parsers::Year.parse(range.gsub(/ *\(as ([^)]*)\) */, ""))
        end
      else
        raise Errors::ParserError, "Unknown token: #{dt.content}"
      end
    end
  end

  # Members
  proc = proc do |row|
    link = row.css("a")

    if link.any?
      # Artist name contains a link
      id = Integer(link.attr("href").text.split("/").last)
      name = sanitize link.text
    else
      # Artist name does not contain a link
      name = sanitize row.css("h3").text
    end

    r = row.css("td").last.text
    role, range = r.match(/(.*)\(([^(]*)\)/)&.captures

    range = Parsers::Year.parse(range)

    {
      id: id,
      name: name,
      years_active: range,
      role: sanitize(role),
    }.compact
  end

  doc.css("#band_tab_members_current .lineupRow").each do |row|
    props[:members] << proc.call(row).merge(current: true)
  end

  doc.css("#band_tab_members_past .lineupRow").each do |row|
    props[:members] << proc.call(row).merge(current: false)
  end

  props
rescue StandardError => e
  e.backtrace.each { |b| MetalArchives.config.logger.error b }
  raise Errors::ParserError, e
end

.parse_related_links_html(response) ⇒ Object

Parse related links HTML page

Returns Hash

Raises

  • MetalArchives::Errors::ParserError when parsing failed. Please report this error.



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# File 'lib/metal_archives/parsers/band.rb', line 207

def parse_related_links_html(response)
  links = []

  doc = Nokogiri::HTML response
  doc.css("#linksTableOfficial td a").each do |a|
    links << {
      url: a["href"],
      type: :official,
      title: a.content,
    }
  end
  doc.css("#linksTableOfficial_merchandise td a").each do |a|
    links << {
      url: a["href"],
      type: :merchandise,
      title: a.content,
    }
  end

  links
rescue StandardError => e
  e.backtrace.each { |b| MetalArchives.config.logger.error b }
  raise Errors::ParserError, e
end

.parse_releases_html(response) ⇒ Object

Parse releases HTML page

Returns Array

Raises

  • MetalArchives::Errors::ParserError when parsing failed. Please report this error.



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# File 'lib/metal_archives/parsers/band.rb', line 239

def parse_releases_html(response)
  releases = []

  doc = Nokogiri::HTML response
  doc.css("tbody tr td:first a").each do |a|
    id = a["href"].split("/").last.to_i
    releases << MetalArchives::Release.find(id)
  end

  releases
rescue StandardError => e
  e.backtrace.each { |b| MetalArchives.config.logger.error b }
  raise Errors::ParserError, e
end

.parse_similar_bands_html(response) ⇒ Object

Parse similar bands HTML page

Returns Hash

Raises

  • MetalArchives::Errors::ParserError when parsing failed. Please report this error.



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# File 'lib/metal_archives/parsers/band.rb', line 181

def parse_similar_bands_html(response)
  similar = []

  doc = Nokogiri::HTML response
  doc.css("#artist_list tbody tr").each do |row|
    similar << {
      id: row.css("td a").first["href"].split("/").last.to_i,
      score: row.css("td").last.content.strip,
    }
  end

  similar
rescue StandardError => e
  MetalArchives.config.logger e.message
  e.backtrace.each { |b| MetalArchives.config.logger.error b }
  raise Errors::ParserError, e
end