Adds rail

[rails.git] / app / models / trace.rb

diff --git a/app/models/trace.rb b/app/models/trace.rb
index 4f21c8b25e29277d3c167a55e860011232793693..b13ce84d23b5addf216a9f363fb06f1d1905dc63 100644 (file)
--- a/app/models/trace.rb
+++ b/app/models/trace.rb
@@ -1,34 +1,68 @@
 class Trace < ActiveRecord::Base
 class Trace < ActiveRecord::Base

-  set_table_name 'gpx_files'
+  self.table_name = "gpx_files"

 
 

-  validates_presence_of :user_id, :name, :public, :description, :timestamp
-#  validates_numericality_of :latitude, :longitude
-  validates_inclusion_of :inserted, :in => [ true, false]
-  
-  belongs_to :user
-  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
+  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
+
+  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 :user, :presence => true, :associated => true
+  validates :name, :presence => true, :length => 1..255
+  validates :description, :presence => { :on => :create }, :length => 1..255
+  validates :timestamp, :presence => true
+  validates :visibility, :inclusion => %w(private public trackable identifiable)

 
   def destroy
     super
 
   def destroy
     super

-    FileUtils.rm_f(trace_name, icon_picture_name, large_picture_name)
+    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)
   end
 
   def tagstring=(s)

-    self.tags = s.split().collect {|tag|
-      tt = Tracetag.new
-      tt.tag = tag
-      tt
-    }
-  end
-  
-  def large_picture= (data)
+    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
     f = File.new(large_picture_name, "wb")
     f.syswrite(data)
     f.close
   end

-  
-  def icon_picture= (data)
+
+  def icon_picture=(data)

     f = File.new(icon_picture_name, "wb")
     f.syswrite(data)
     f.close
     f = File.new(icon_picture_name, "wb")
     f.syswrite(data)
     f.close


@@ -36,117 +70,238 @@ class Trace < ActiveRecord::Base
 
   def large_picture
     f = File.new(large_picture_name, "rb")
 
   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))
     data = f.sysread(File.size(f.path))

-    logger.info "have read data, bytes: '#{data.length}'"

     f.close
     data
   end
     f.close
     data
   end

-  
+

   def icon_picture
     f = File.new(icon_picture_name, "rb")
   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
     data = f.sysread(File.size(f.path))
     f.close
     data
   end

-  
-  # FIXME change to permanent filestore area
+

   def large_picture_name
   def large_picture_name

-    "/home/osm/icons/#{id}.gif"
+    "#{GPX_IMAGE_DIR}/#{id}.gif"

   end
 
   end
 

-  # FIXME change to permanent filestore area

   def icon_picture_name
   def icon_picture_name

-    "/home/osm/icons/#{id}_icon.gif"
+    "#{GPX_IMAGE_DIR}/#{id}_icon.gif"

   end
 
   def trace_name
   end
 
   def trace_name

-    "/home/osm/gpx/#{id}.gpx"
+    "#{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/
+    tarred = filetype =~ /tar archive/
+
+    if gzipped
+      mimetype = "application/x-gzip"
+    elsif bzipped
+      mimetype = "application/x-bzip2"
+    elsif zipped
+      mimetype = "application/x-zip"
+    elsif tarred
+      mimetype = "application/x-tar"
+    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
   end
 
   def to_xml_node

-    el1 = XML::Node.new 'gpx_file'
-    el1['id'] = self.id.to_s
-    el1['name'] = self.name.to_s
-    el1['lat'] = self.latitude.to_s
-    el1['lon'] = self.longitude.to_s
-    el1['user'] = self.user.display_name
-    el1['public'] = self.public.to_s
-    el1['pending'] = (!self.inserted).to_s
-    el1['timestamp'] = self.timestamp.xmlschema
-    return el1
+    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
 
   end
 

-  def import
-    begin
-      logger.info("GPX Import importing #{name} (#{id}) from #{user.email}")
+  # 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 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/

 
 

-      # TODO *nix specific, could do to work on windows... would be functionally inferior though - check for '.gz'
-      filetype = `file -b #{trace_name}`.chomp
-      gzipped = filetype =~ /^gzip/
-      zipped = filetype =~ /^Zip/
+    if gzipped || bzipped || zipped || tarred
+      tmpfile = Tempfile.new("trace.#{id}")

 
 

-      if gzipped
-        filename = tempfile = "/tmp/#{rand}"
-        system("gunzip -c #{trace_name} > #{filename}")
+      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
       elsif zipped

-        filename = tempfile = "/tmp/#{rand}"
-        system("unzip -p #{trace_name} > #{filename}")
-      else
-        filename = trace_name
+        system("unzip -p #{trace_name} -x '__MACOSX/*' > #{tmpfile.path} 2> /dev/null")

       end
 
       end
 

-      gpx = OSM::GPXImporter.new(filename)
-
-      f_lat = 0
-      f_lon = 0
-      first = true
-
-      Tracepoint.delete_all(['gpx_id = ?', self.id])
-
-      gpx.points do |point|
-        if first
-          f_lat = point['latitude']
-          f_lon = point['longitude']
-        end
-
-        tp = Tracepoint.new
-        tp.lat = point['latitude'].to_f
-        tp.lng = point['longitude'].to_f
-        tp.altitude = point['altitude'].to_f
-        tp.timestamp = point['timestamp']
-        tp.user_id = user.id
-        tp.gpx_id = id
-        tp.trackid = point['segment'].to_i
-        tp.save!
-      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)

 
 

-      if gpx.actual_points > 0
-        max_lat = Tracepoint.maximum('latitude', :conditions => ['gpx_id = ?', id])
-        min_lat = Tracepoint.minimum('latitude', :conditions => ['gpx_id = ?', id])
-        max_lon = Tracepoint.maximum('longitude', :conditions => ['gpx_id = ?', id])
-        min_lon = Tracepoint.minimum('longitude', :conditions => ['gpx_id = ?', id])
-
-        max_lat = max_lat.to_f / 1000000
-        min_lat = min_lat.to_f / 1000000
-        max_lon = max_lon.to_f / 1000000
-        min_lon = min_lon.to_f / 1000000
-
-        self.latitude = f_lat
-        self.longitude = f_lon
-        self.large_picture = gpx.get_picture(min_lat, min_lon, max_lat, max_lon, gpx.actual_points)
-        self.icon_picture = gpx.get_icon(min_lat, min_lon, max_lat, max_lon)
-        self.size = gpx.actual_points
-        self.inserted = true
-        self.save
+    f_lat = 0
+    f_lon = 0
+    first = true
+
+    # If there are any existing points for this trace then delete them
+    Tracepoint.delete_all(:gpx_id => id)
+
+    gpx.points do |point|
+      if first
+        f_lat = point.latitude
+        f_lon = point.longitude
+        first = false

       end
 
       end
 

-      logger.info "done trace #{id}"
+      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)

 
 

-      return gpx
-    ensure
-      FileUtils.rm_f(tempfile) if tempfile
+      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
     end

+
+    logger.info "done trace #{id}"
+
+    gpx

   end
 end
   end
 end