Prepare for Rails 2.1+, as we will no longer be able to use a symbol in the set_fixtu...

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

diff --git a/app/controllers/trace_controller.rb b/app/controllers/trace_controller.rb
index 06db32248229e3b139927f7a3b966ed5f7ecd02d..899df05dfc021d1d683012bfbb8b995f42579d04 100644 (file)
--- a/app/controllers/trace_controller.rb
+++ b/app/controllers/trace_controller.rb
@@ -1,47 +1,316 @@
 class TraceController < ApplicationController
 class TraceController < ApplicationController

-  before_filter :authorize_web  

   layout 'site'
 
   layout 'site'
 

-  def list
-    @traces = Trace.find(:all)
+  before_filter :authorize_web  
+  before_filter :authorize, :only => [:api_details, :api_data, :api_create]
+  before_filter :check_database_availability, :except => [:api_details, :api_data, :api_create]
+  before_filter :check_read_availability, :only => [:api_details, :api_data, :api_create]
+ 
+  # 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 => [ "visible = 1 and display_name = ?", display_name])
+    end
+
+    # set title
+    if target_user.nil?
+      @title = "Public GPS traces"
+    elsif @user and @user == target_user
+      @title = "Your GPS traces"
+    else
+      @title = "Public GPS traces from #{target_user.display_name}"
+    end
+
+    @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 == target_user
+        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])
   end
 
   def view
     @trace = Trace.find(params[:id])

-    render :nothing, :status => 401 if @trace.user.id != @user.id
+
+    if @trace and @trace.visible? and
+       (@trace.public? or @trace.user == @user)
+      @title = "Viewing trace #{@trace.name}"
+    else
+      flash[:notice] = "Trace not found!"
+      redirect_to :controller => 'trace', :action => 'list'
+    end
+  rescue ActiveRecord::RecordNotFound
+    flash[:notice] = "Trace not found!"
+    redirect_to :controller => 'trace', :action => 'list'

   end
 
   def create
   end
 
   def create

-    filename = "/tmp/#{rand}"
+    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])

 
 

-    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'].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'])
-    @trace.inserted = false
-    @trace.user_id = @user.id
-    @trace.timestamp = Time.now
-    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."
+      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

+  end
+
+  def data
+    trace = Trace.find(params[:id])
+
+    if trace.visible? and (trace.public? or (@user and @user == trace.user))
+      if request.format == Mime::XML
+        send_file(trace.xml_file, :filename => "#{trace.id}.xml", :type => Mime::XML.to_s, :disposition => 'attachment')
+      else
+        send_file(trace.trace_name, :filename => "#{trace.id}#{trace.extension_name}", :type => trace.mime_type, :disposition => 'attachment')
+      end
+    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])

 
 

-    redirect_to :action => 'mine'
+    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])
   end
 
   def picture
     trace = Trace.find(params[:id])

-    send_data(trace.large_picture, :filename => "#{trace.id}.gif", :type => 'image/png', :disposition => 'inline') if trace.public
+
+    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])
   end
 
   def icon
     trace = Trace.find(params[:id])

-    send_data(trace.icon_picture, :filename => "#{trace.id}.gif", :type => 'image/gif', :disposition => 'inline') if trace.public
+
+    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}"
+
+    File.open(filename, "w") { |f| f.write(file.read) }
+
+    @trace = Trace.new({:name => name, :tagstring => tags,
+                        :description => description, :public => public})
+    @trace.inserted = false
+    @trace.user = @user
+    @trace.timestamp = Time.now
+
+    if @trace.save
+      FileUtils.mv(filename, @trace.trace_name)
+    else
+      FileUtils.rm_f(filename)
+    end

   end
 
 end
   end
 
 end