Fix most auto-correctable rubocop issues
[rails.git] / app / models / trace.rb
index 014db4a..d8cc604 100644 (file)
 class Trace < ActiveRecord::Base
-  set_table_name 'gpx_files'
+  self.table_name = "gpx_files"
 
-  belongs_to :user
+  belongs_to :user, :counter_cache => true
+  has_many :tags, :class_name => 'Tracetag', :foreign_key => 'gpx_id', :dependent => :delete_all
+  has_many :points, :class_name => 'Tracepoint', :foreign_key => 'gpx_id', :dependent => :delete_all
 
-  def tags=(bleh)
+  scope :visible, -> { where(:visible => true) }
+  scope :visible_to, ->(u) { visible.where("visibility IN ('public', 'identifiable') OR user_id = ?", u) }
+  scope :visible_to_all, -> { where(:visibility => %w(public identifiable)) }
+  scope :tagged, ->(t) { joins(:tags).where(:gpx_file_tags => { :tag => t }) }
+
+  validates_presence_of :user_id, :name, :timestamp
+  validates_presence_of :description, :on => :create
+  validates_length_of :name, :maximum => 255
+  validates_length_of :description, :maximum => 255
+  #  validates_numericality_of :latitude, :longitude
+  validates_inclusion_of :inserted, :in => [true, false]
+  validates_inclusion_of :visibility, :in => %w(private public trackable identifiable)
+
+  def destroy
+    super
+    FileUtils.rm_f(trace_name)
+    FileUtils.rm_f(icon_picture_name)
+    FileUtils.rm_f(large_picture_name)
+  end
+
+  def tagstring
+    tags.collect(&:tag).join(", ")
+  end
+
+  def tagstring=(s)
+    if s.include? ','
+      self.tags = s.split(/\s*,\s*/).select { |tag| tag !~ /^\s*$/ }.collect {|tag|
+        tt = Tracetag.new
+        tt.tag = tag
+        tt
+      }
+    else
+      # do as before for backwards compatibility:
+      self.tags = s.split.collect {|tag|
+        tt = Tracetag.new
+        tt.tag = tag
+        tt
+      }
+    end
+  end
+
+  def public?
+    visibility == "public" || visibility == "identifiable"
+  end
+
+  def trackable?
+    visibility == "trackable" || visibility == "identifiable"
+  end
+
+  def identifiable?
+    visibility == "identifiable"
+  end
+
+  def large_picture=(data)
+    f = File.new(large_picture_name, "wb")
+    f.syswrite(data)
+    f.close
+  end
+
+  def icon_picture=(data)
+    f = File.new(icon_picture_name, "wb")
+    f.syswrite(data)
+    f.close
+  end
+
+  def large_picture
+    f = File.new(large_picture_name, "rb")
+    logger.info "large picture file: '#{f.path}', bytes: #{File.size(f.path)}"
+    data = f.sysread(File.size(f.path))
+    logger.info "have read data, bytes: '#{data.length}'"
+    f.close
+    data
+  end
+
+  def icon_picture
+    f = File.new(icon_picture_name, "rb")
+    logger.info "icon picture file: '#{f.path}'"
+    data = f.sysread(File.size(f.path))
+    f.close
+    data
+  end
+
+  def large_picture_name
+    "#{GPX_IMAGE_DIR}/#{id}.gif"
+  end
+
+  def icon_picture_name
+    "#{GPX_IMAGE_DIR}/#{id}_icon.gif"
+  end
+
+  def trace_name
+    "#{GPX_TRACE_DIR}/#{id}.gpx"
+  end
+
+  def mime_type
+    filetype = `/usr/bin/file -bz #{trace_name}`.chomp
+    gzipped = filetype =~ /gzip compressed/
+    bzipped = filetype =~ /bzip2 compressed/
+    zipped = filetype =~ /Zip archive/
+
+    if gzipped
+      mimetype = "application/x-gzip"
+    elsif bzipped
+      mimetype = "application/x-bzip2"
+    elsif zipped
+      mimetype = "application/x-zip"
+    else
+      mimetype = "application/gpx+xml"
+    end
+
+    mimetype
+  end
+
+  def extension_name
+    filetype = `/usr/bin/file -bz #{trace_name}`.chomp
+    gzipped = filetype =~ /gzip compressed/
+    bzipped = filetype =~ /bzip2 compressed/
+    zipped = filetype =~ /Zip archive/
+    tarred = filetype =~ /tar archive/
+
+    if tarred && gzipped
+      extension = ".tar.gz"
+    elsif tarred && bzipped
+      extension = ".tar.bz2"
+    elsif tarred
+      extension = ".tar"
+    elsif gzipped
+      extension = ".gpx.gz"
+    elsif bzipped
+      extension = ".gpx.bz2"
+    elsif zipped
+      extension = ".zip"
+    else
+      extension = ".gpx"
+    end
+
+    extension
+  end
+
+  def to_xml
+    doc = OSM::API.new.get_xml_doc
+    doc.root << to_xml_node
+    doc
+  end
+
+  def to_xml_node
+    el1 = XML::Node.new 'gpx_file'
+    el1['id'] = id.to_s
+    el1['name'] = name.to_s
+    el1['lat'] = latitude.to_s if inserted
+    el1['lon'] = longitude.to_s if inserted
+    el1['user'] = user.display_name
+    el1['visibility'] = visibility
+    el1['pending'] = (!inserted).to_s
+    el1['timestamp'] = timestamp.xmlschema
+
+    el2 = XML::Node.new 'description'
+    el2 << description
+    el1 << el2
+
+    tags.each do |tag|
+      el2 = XML::Node.new('tag')
+      el2 << tag.tag
+      el1 << el2
+    end
+
+    el1
+  end
+
+  # Read in xml as text and return it's Node object representation
+  def self.from_xml(xml, create = false)
+    p = XML::Parser.string(xml)
+    doc = p.parse
+
+    doc.find('//osm/gpx_file').each do |pt|
+      return Trace.from_xml_node(pt, create)
+    end
+
+    fail OSM::APIBadXMLError.new("trace", xml, "XML doesn't contain an osm/gpx_file element.")
+  rescue LibXML::XML::Error, ArgumentError => ex
+    raise OSM::APIBadXMLError.new("trace", xml, ex.message)
+  end
+
+  def self.from_xml_node(pt, create = false)
+    trace = Trace.new
+
+    fail OSM::APIBadXMLError.new("trace", pt, "visibility missing") if pt['visibility'].nil?
+    trace.visibility = pt['visibility']
+
+    unless create
+      fail OSM::APIBadXMLError.new("trace", pt, "ID is required when updating.") if pt['id'].nil?
+      trace.id = pt['id'].to_i
+      # .to_i will return 0 if there is no number that can be parsed.
+      # We want to make sure that there is no id with zero anyway
+      fail OSM::APIBadUserInput.new("ID of trace cannot be zero when updating.") if trace.id == 0
+    end
+
+    # We don't care about the time, as it is explicitly set on create/update/delete
+    # We don't care about the visibility as it is implicit based on the action
+    # and set manually before the actual delete
+    trace.visible = true
+
+    description = pt.find('description').first
+    fail OSM::APIBadXMLError.new("trace", pt, "description missing") if description.nil?
+    trace.description = description.content
+
+    pt.find('tag').each do |tag|
+      trace.tags.build(:tag => tag.content)
+    end
+
+    trace
   end
 
-  def mime_type=(bleh)
+  def xml_file
+    # TODO *nix specific, could do to work on windows... would be functionally inferior though - check for '.gz'
+    filetype = `/usr/bin/file -bz #{trace_name}`.chomp
+    gzipped = filetype =~ /gzip compressed/
+    bzipped = filetype =~ /bzip2 compressed/
+    zipped = filetype =~ /Zip archive/
+    tarred = filetype =~ /tar archive/
+
+    if gzipped || bzipped || zipped || tarred
+      tmpfile = Tempfile.new("trace.#{id}")
+
+      if tarred && gzipped
+        system("tar -zxOf #{trace_name} > #{tmpfile.path}")
+      elsif tarred && bzipped
+        system("tar -jxOf #{trace_name} > #{tmpfile.path}")
+      elsif tarred
+        system("tar -xOf #{trace_name} > #{tmpfile.path}")
+      elsif gzipped
+        system("gunzip -c #{trace_name} > #{tmpfile.path}")
+      elsif bzipped
+        system("bunzip2 -c #{trace_name} > #{tmpfile.path}")
+      elsif zipped
+        system("unzip -p #{trace_name} -x '__MACOSX/*' > #{tmpfile.path}")
+      end
+
+      tmpfile.unlink
+
+      file = tmpfile.file
+    else
+      file = File.open(trace_name)
+    end
+
+    file
+  end
+
+  def import
+    logger.info("GPX Import importing #{name} (#{id}) from #{user.email}")
+
+    gpx = GPX::File.new(xml_file)
+
+    f_lat = 0
+    f_lon = 0
+    first = true
+
+    # If there are any existing points for this trace then delete
+    # them - we check for existing points first to avoid locking
+    # the table in the common case where there aren't any.
+    if Tracepoint.where(:gpx_id => id).exists?
+      Tracepoint.delete_all(:gpx_id => id)
+    end
+
+    gpx.points do |point|
+      if first
+        f_lat = point.latitude
+        f_lon = point.longitude
+        first = false
+      end
+
+      tp = Tracepoint.new
+      tp.lat = point.latitude
+      tp.lon = point.longitude
+      tp.altitude = point.altitude
+      tp.timestamp = point.timestamp
+      tp.gpx_id = id
+      tp.trackid = point.segment
+      tp.save!
+    end
+
+    if gpx.actual_points > 0
+      max_lat = Tracepoint.where(:gpx_id => id).maximum(:latitude)
+      min_lat = Tracepoint.where(:gpx_id => id).minimum(:latitude)
+      max_lon = Tracepoint.where(:gpx_id => id).maximum(:longitude)
+      min_lon = Tracepoint.where(:gpx_id => id).minimum(:longitude)
+
+      max_lat = max_lat.to_f / 10000000
+      min_lat = min_lat.to_f / 10000000
+      max_lon = max_lon.to_f / 10000000
+      min_lon = min_lon.to_f / 10000000
+
+      self.latitude = f_lat
+      self.longitude = f_lon
+      self.large_picture = gpx.picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points)
+      self.icon_picture = gpx.icon(min_lat, min_lon, max_lat, max_lon)
+      self.size = gpx.actual_points
+      self.inserted = true
+      self.save!
+    end
+
+    logger.info "done trace #{id}"
+
+    gpx
   end
 end