add last-modified header to relation read

[rails.git] / app / controllers / trace_controller.rb

diff --git a/app/controllers/trace_controller.rb b/app/controllers/trace_controller.rb
index 337f27e0e80c32164f8d0790e4a6062c3833574a..7c5bd7db00df0d64b4561a170fe5bf749eba5723 100644 (file)
--- a/app/controllers/trace_controller.rb
+++ b/app/controllers/trace_controller.rb
@@ -1,33 +1,306 @@
 class TraceController < ApplicationController
   before_filter :authorize_web  
 class TraceController < ApplicationController
   before_filter :authorize_web  

+  before_filter :authorize, :only => [:api_details, :api_data, :api_create]

   layout 'site'
   layout 'site'

+ 
+  # Counts and selects pages of GPX traces for various criteria (by user, tags, public etc.).
+  #  target_user - if set, specifies the user to fetch traces for.  if not set will fetch all traces
+  def list(target_user = nil, action = "list")
+    # from display name, pick up user id if one user's traces only
+    display_name = params[:display_name]
+    if target_user.nil? and !display_name.blank?
+      target_user = User.find(:first, :conditions => [ "display_name = ?", display_name])
+    end
+
+    # set title
+    if target_user.nil?
+      @title = "Public GPS traces"
+    elsif @user and @user.id == target_user.id
+      @title = "Your GPS traces"
+    else
+      @title = "Public GPS traces from #{target_user.display_name}"
+    end

 
 

-  def list
-    @traces = Trace.find(:all)
+    @title += " tagged with #{params[:tag]}" if params[:tag]
+
+    # four main cases:
+    # 1 - all traces, logged in = all public traces + all user's (i.e + all mine)
+    # 2 - all traces, not logged in = all public traces
+    # 3 - user's traces, logged in as same user = all user's traces 
+    # 4 - user's traces, not logged in as that user = all user's public traces
+    if target_user.nil? # all traces
+      if @user
+        conditions = ["(gpx_files.public = 1 OR gpx_files.user_id = ?)", @user.id] #1
+      else
+        conditions  = ["gpx_files.public = 1"] #2
+      end
+    else
+      if @user and @user.id == target_user.id
+        conditions = ["gpx_files.user_id = ?", @user.id] #3 (check vs user id, so no join + can't pick up non-public traces by changing name)
+      else
+        conditions = ["gpx_files.public = 1 AND gpx_files.user_id = ?", target_user.id] #4
+      end
+    end
+    
+    if params[:tag]
+      @tag = params[:tag]
+      conditions[0] += " AND EXISTS (SELECT * FROM gpx_file_tags AS gft WHERE gft.gpx_id = gpx_files.id AND gft.tag = ?)"
+      conditions << @tag
+    end
+    
+    conditions[0] += " AND gpx_files.visible = 1"
+
+    @trace_pages, @traces = paginate(:traces,
+                                     :include => [:user, :tags],
+                                     :conditions => conditions,
+                                     :order => "gpx_files.timestamp DESC",
+                                     :per_page => 20)
+
+    # put together SET of tags across traces, for related links
+    tagset = Hash.new
+    if @traces
+      @traces.each do |trace|
+        trace.tags.reload if params[:tag] # if searched by tag, ActiveRecord won't bring back other tags, so do explicitly here
+        trace.tags.each do |tag|
+          tagset[tag.tag] = tag.tag
+        end
+      end
+    end
+    
+    # final helper vars for view
+    @action = action
+    @display_name = target_user.display_name if target_user
+    @all_tags = tagset.values

   end
 
   def mine
   end
 
   def mine

-    @traces = Trace.find(:all, :conditions => ['user_id = ?', @user.id])
+    if @user
+      list(@user, "mine") unless @user.nil?
+    else
+      redirect_to :controller => 'user', :action => 'login', :referer => request.request_uri
+    end
+  end
+
+  def view
+    @trace = Trace.find(params[:id])
+    @title = "Viewing trace #{@trace.name}"
+    if !@trace.visible?
+      render :nothing => true, :status => :not_found
+    elsif !@trace.public? and @trace.user.id != @user.id
+      render :nothing => true, :status => :forbidden
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found

   end
 
   def create
   end
 
   def create

+    logger.info(params[:trace][:gpx_file].class.name)
+    if params[:trace][:gpx_file].respond_to?(:read)
+      do_create(params[:trace][:gpx_file], params[:trace][:tagstring],
+                params[:trace][:description], params[:trace][:public])
+
+      if @trace.id
+        logger.info("id is #{@trace.id}")
+        flash[:notice] = "Your GPX file has been uploaded and is awaiting insertion in to the database. This will usually happen within half an hour, and an email will be sent to you on completion."
+
+        redirect_to :action => 'mine'
+      end
+    else
+      @trace = Trace.new({:name => "Dummy",
+                          :tagstring => params[:trace][:tagstring],
+                          :description => params[:trace][:description],
+                          :public => params[:trace][:public],
+                          :inserted => false, :user => @user,
+                          :timestamp => Time.now})
+      @trace.valid?
+      @trace.errors.add(:gpx_file, "can't be blank")
+    end
+  end
+
+  def data
+    trace = Trace.find(params[:id])
+
+    if trace.visible? and (trace.public? or (@user and @user == trace.user))
+      send_file(trace.trace_name, :filename => "#{trace.id}#{trace.extension_name}", :type => trace.mime_type, :disposition => 'attachment')
+    else
+      render :nothing, :status => :not_found
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def edit
+    @trace = Trace.find(params[:id])
+
+    if @user and @trace.user == @user
+      if params[:trace]
+        @trace.description = params[:trace][:description]
+        @trace.tagstring = params[:trace][:tagstring]
+        if @trace.save
+          redirect_to :action => 'view'
+        end        
+      end
+    else
+      render :nothing, :status => :forbidden
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def delete
+    trace = Trace.find(params[:id])
+
+    if @user and trace.user == @user
+      if request.post? and trace.visible?
+        trace.visible = false
+        trace.save
+        flash[:notice] = 'Track scheduled for deletion'
+        redirect_to :controller => 'traces', :action => 'mine'
+      else
+        render :nothing, :status => :bad_request
+      end
+    else
+      render :nothing, :status => :forbidden
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def make_public
+    trace = Trace.find(params[:id])
+
+    if @user and trace.user == @user
+      if request.post? and !trace.public?
+        trace.public = true
+        trace.save
+        flash[:notice] = 'Track made public'
+        redirect_to :controller => 'trace', :action => 'view', :id => params[:id]
+      else
+        render :nothing, :status => :bad_request
+      end
+    else
+      render :nothing, :status => :forbidden
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def georss
+    conditions = ["gpx_files.public = 1"]
+
+    if params[:display_name]
+      conditions[0] += " AND users.display_name = ?"
+      conditions << params[:display_name]
+    end
+    
+    if params[:tag]
+      conditions[0] += " AND EXISTS (SELECT * FROM gpx_file_tags AS gft WHERE gft.gpx_id = gpx_files.id AND gft.tag = ?)"
+      conditions << params[:tag]
+    end
+
+    traces = Trace.find(:all, :include => :user, :conditions => conditions, 
+                        :order => "timestamp DESC", :limit => 20)
+
+    rss = OSM::GeoRSS.new
+
+    traces.each do |trace|
+      rss.add(trace.latitude, trace.longitude, trace.name, trace.user.display_name, url_for({:controller => 'trace', :action => 'view', :id => trace.id, :display_name => trace.user.display_name}), "<img src='#{url_for({:controller => 'trace', :action => 'icon', :id => trace.id, :user_login => trace.user.display_name})}'> GPX file with #{trace.size} points from #{trace.user.display_name}", trace.timestamp)
+    end
+
+    render :text => rss.to_s, :content_type => "application/rss+xml"
+  end
+
+  def picture
+    trace = Trace.find(params[:id])
+
+    if trace.inserted?
+      if trace.public? or (@user and @user == trace.user)
+        send_file(trace.large_picture_name, :filename => "#{trace.id}.gif", :type => 'image/gif', :disposition => 'inline')
+      else
+        render :nothing, :status => :forbidden
+      end
+    else
+      render :nothing => true, :status => :not_found
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def icon
+    trace = Trace.find(params[:id])
+
+    if trace.inserted?
+      if trace.public? or (@user and @user == trace.user)
+        send_file(trace.icon_picture_name, :filename => "#{trace.id}_icon.gif", :type => 'image/gif', :disposition => 'inline')
+      else
+        render :nothing, :status => :forbidden
+      end
+    else
+      render :nothing => true, :status => :not_found
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def api_details
+    trace = Trace.find(params[:id])
+
+    if trace.public? or trace.user == @user
+      render :text => trace.to_xml.to_s, :content_type => "text/xml"
+    else
+      render :nothing => true, :status => :forbidden
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def api_data
+    trace = Trace.find(params[:id])
+
+    if trace.public? or trace.user == @user
+      send_file(trace.trace_name, :filename => "#{trace.id}#{trace.extension_name}", :type => trace.mime_type, :disposition => 'attachment')
+    else
+      render :nothing => true, :status => :forbidden
+    end
+  rescue ActiveRecord::RecordNotFound
+    render :nothing => true, :status => :not_found
+  end
+
+  def api_create
+    if request.post?
+      do_create(params[:file], params[:tags], params[:description], params[:public])
+
+      if @trace.id
+        render :text => @trace.id.to_s, :content_type => "text/plain"
+      elsif @trace.valid?
+        render :nothing => true, :status => :internal_server_error
+      else
+        render :nothing => true, :status => :bad_request
+      end
+    else
+      render :nothing => true, :status => :method_not_allowed
+    end
+  end
+
+private
+
+  def do_create(file, tags, description, public)
+    name = file.original_filename.gsub(/[^a-zA-Z0-9.]/, '_')

     filename = "/tmp/#{rand}"
 
     filename = "/tmp/#{rand}"
 

-    File.open(filename, "w") { |f| f.write(@params['trace']['gpx_file'].read) }
-    @params['trace']['name'] = @params['trace']['gpx_file'].original_filename.gsub(/[^a-zA-Z0-9.]/, '_') # This makes sure filenames are sane
-    #@params['trace']['data'] = @params['trace']['gpx_file'].read
-#    @params['trace']['mime_type'] = @params['trace']['gpx_file'].content_type.chomp
-    @params['trace'].delete('gpx_file') # let's remove the field from the hash, because there's no such field in the DB anyway.
-    @trace = Trace.new(@params['trace'])
+    File.open(filename, "w") { |f| f.write(file.read) }
+
+    @trace = Trace.new({:name => name, :tagstring => tags,
+                        :description => description, :public => public})

     @trace.inserted = false
     @trace.inserted = false

-    @trace.user_id = @user.id
+    @trace.user = @user

     @trace.timestamp = Time.now
     @trace.timestamp = Time.now

+

     if @trace.save
     if @trace.save

-      logger.info("id is #{@trace.id}")
-      `mv #{filename} /tmp/#{@trace.id}.gpx`
-      flash[:notice] = "Your GPX file has been uploaded and is awaiting insertion in to the database. This will usually happen within half an hour, and an email will be sent to you on completion."
+      File.rename(filename, @trace.trace_name)
+    else
+      FileUtils.rm_f(filename)

     end
     end

-
-    redirect_to :action => 'mine'

   end
   end

+

 end
 end