[nuget_model] can generate simple paket file template

Ref #174

lib/albacore/nuget_model.rb

@@ -45,7 +45,7 @@ def self.nuspec_field *syms
   @#{sym} = val
   @set_fields.add? :#{sym}
 end})
-        end 
+        end
       end
 
       # REQUIRED: gets or sets the id of this package
@@ -153,6 +153,34 @@ def to_xml
         to_xml_builder.to_xml
       end
 
+      def to_paket_template
+        fields = @set_fields.inject("type file") do |state, field|
+          txt = case field
+                  when :release_notes
+                    "#{send(field).split(/\n/).inject("") { |acc, val|
+                      "#{acc}\n  #{val}"
+                    }}"
+                  else
+                    " #{send(field)}"
+                end
+
+          "#{state}\n#{Metadata.camel_case(field)}#{txt}"
+        end
+
+        fws = @framework_assemblies || []
+        fws = fws.empty? ? "" : fws.inject("\nframeworkDependencies") do |s, asm|
+          _, asm = asm
+          "#{s}\n  #{asm.id}"
+        end
+
+        dependencies = @dependencies.inject("\ndependencies") do |state, d|
+          _, dependency = d
+          "#{state}\n  #{dependency.id} ~> #{dependency.version}"
+        end unless @dependencies.empty?
+
+        "#{fields}#{dependencies}#{fws}"
+      end
+
       def merge_with other
         raise ArgumentError, 'other is nil' if other.nil?
         raise ArgumentError, 'other is wrong type' unless other.is_a? Metadata
@@ -166,13 +194,13 @@ def merge_with other
 
         # set all my fields to the new instance
         @set_fields.each do |field|
-          debug "setting field '#{field}' to be '#{send(field)}' [nuget model: metadata]" 
+          debug "setting field '#{field}' to be '#{send(field)}' [nuget model: metadata]"
           m_next.send(:"#{field}=", send(field))
         end
 
         # set all other's fields to the new instance, overriding mine
         other.set_fields.each do |field|
-          debug "setting field '#{field}' to be '#{send(field)}' [nuget model: metadata]" 
+          debug "setting field '#{field}' to be '#{send(field)}' [nuget model: metadata]"
           m_next.send(:"#{field}=", other.send(field))
         end
 
@@ -189,11 +217,11 @@ def self.from_xml node
         m = Metadata.new
         node.children.reject { |n| n.text? }.each do |n|
           if n.name == 'dependencies'
-            n.children.reject { |n| n.text? }.each do |dep|
+            n.children.reject { |nn| nn.text? }.each do |dep|
               m.add_dependency dep['id'], dep['version']
             end
           elsif n.name == 'frameworkDepdendencies'
-            n.children.reject { |n| n.text? }.each do |dep|
+            n.children.reject { |nn| nn.text? }.each do |dep|
               m.add_framework_depdendency dep['id'], dep['version']
             end
           else
@@ -210,6 +238,14 @@ def self.pascal_case str
         :"#{str}"
       end
 
+      def self.camel_case str
+        str.to_s.
+            split('_').
+            inject([]) { |buffer, e|
+              buffer.push(buffer.empty? ? e : e.capitalize)
+            }.join
+      end
+
       def self.underscore str
         str.gsub(/::/, '/').
           gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
@@ -284,6 +320,15 @@ def to_xml
         to_xml_builder.to_xml
       end
 
+      # Converts the Package instance to a paket template string
+      def to_paket_template
+        files = @files.inject("\nfiles") do |state, file|
+          "#{state}\n  #{file.src} => #{file.target}"
+        end
+
+        %{#{metadata.to_paket_template}#{files}}
+      end
+
       # creates a new Package/Metadata by overriding data in this instance with
       # data from passed instance
       def merge_with other
@@ -390,7 +435,7 @@ def self.from_xxproj proj, *opts
           compile_files.each do |f|
             target = %W[src #{Albacore::Paths.normalise_slashes(f.include)}].join(Albacore::Paths.separator)
             package.add_file f.include, target
-          end 
+          end
 
           debug "add dll and pdb files [nuget model: package]"
           package.add_file(Albacore::Paths.normalise_slashes(output + proj.asmname + '.pdb'), target_lib)
@@ -400,7 +445,7 @@ def self.from_xxproj proj, *opts
           # add *.{dll,xml,config}
           %w[dll xml config pdb dll.mdb].each do |ext|
             file = %W{#{output} #{proj.asmname}.#{ext}}.
-              map { |f| f.gsub /\\$/, '' }.
+              map { |f| f.gsub(/\\$/, '') }.
               map { |f| Albacore::Paths.normalise_slashes f }.
               join(Albacore::Paths.separator)
             debug "adding binary file #{file} [nuget model: package]"

spec/nuget_model_spec.rb

@@ -14,7 +14,7 @@
   end
 
   describe "when adding a dependency" do
-    before do 
+    before do
       subject.add_dependency 'DepId', '=> 3.4.5'
     end
     let :dep do
@@ -33,7 +33,7 @@
 
   describe "when adding a framework dependency" do
     before do
-      subject.add_framework_dependency 'System.Transactions', '2.0.0' 
+      subject.add_framework_dependency 'System.Transactions', '2.0.0'
     end
     let :dep do
       subject.framework_assemblies.first[1]
@@ -69,33 +69,57 @@
 
 describe Albacore::NugetModel::Package, "when doing paket template generation" do
   let :metadata do
-    md = Albacore::NuGetModel::Metadata.new
+    md = ::Albacore::NugetModel::Metadata.new
     md.id = 'MyExamplePackage'
     md.title = 'My Example Package'
-    md.title 
-    md.add_
+    md.version = '1.0.3'
+    md.authors = 'Henrik Feldt'
+    md.owners = 'Henrik Feldt Owner'
+    md.summary = 'If there was a man, or a woman, who would withstand.'
+    md.description = 'Wowowow'
+    md.release_notes = %{These are my notes, to those who came after me.
+ - Item 1
+ - Item 2}
+    md.add_dependency 'FSharp.Core', '4.3.1'
+    md.add_framework_dependency 'System.Xml', '4.0.0'
+    md
+  end
+
+  let :package do
+    pkg = ::Albacore::NugetModel::Package.new metadata
+    pkg.add_file 'bin/Release', 'lib/net45'
+    pkg
   end
+
   let :expected do
     %{type file
 id MyExamplePackage
 title My Example Package
 version 1.0.3
 authors Henrik Feldt
-owners Henrik Feldt
+owners Henrik Feldt Owner
 summary If there was a man, or a woman, who would withstand.
-description
-  Wowowow
-files
-  bin/Release => lib
+description Wowowow
 releaseNotes
-  These are my notes, to those who come after me.
-
+  These are my notes, to those who came after me.
    - Item 1
    - Item 2
 dependencies
-  FSharp.Core >= 4.3.1
-}
+  FSharp.Core ~> 4.3.1
+frameworkDependencies
+  System.Xml
+files
+  bin/Release => lib/net45}
+  end
+
+  subject do
+    package.to_paket_template
   end
+
+  it 'should generate sweet paket templates' do
+    expect(subject).to eq(expected)
+  end
+
 end
 
 describe Albacore::NugetModel::Package, "from XML" do
@@ -124,8 +148,8 @@
   <files>
     <file src="Full/bin/Debug/*.dll" target="lib/net45"/>
     <file src="Full/bin/Debug/*.pdb" target="lib/net45"/>
-    <file src="Silverlight/bin/Debug/*.dll" target="lib/sl40"/> 
-    <file src="Silverlight/bin/Debug/*.pdb" target="lib/sl40"/> 
+    <file src="Silverlight/bin/Debug/*.dll" target="lib/sl40"/>
+    <file src="Silverlight/bin/Debug/*.pdb" target="lib/sl40"/>
     <file src="**/*.cs" target="src"/>
   </files>
 </package>
@@ -174,7 +198,7 @@
       parser.xpath('./ng:metadata/ng:dependencies', ns).children.reject{ |c| c.text? }.each do |dep|
         expect(subject.metadata.dependencies[dep['id']]).to_not be_nil
       end
-    end 
+    end
   end
 
   it "should have all the files of the XML above" do
@@ -233,7 +257,7 @@
   let :projfile do
     curr = File.dirname(__FILE__)
     File.join curr, "testdata", "Project", "ProjectWithTitle.fsproj"
-  end 
+  end
 
   subject do
     Albacore::NugetModel::Package.from_xxproj_file projfile
@@ -267,7 +291,7 @@
     end
     p.add_file 'CodeFolder/A.cs', 'lib/CodeFolder/A.cs'
     p.add_file 'CodeFolder/*.fs', 'lib', 'AssemblyInfo.fs'
-  end 
+  end
   let :p2 do
     p = Albacore::NugetModel::Package.new.with_metadata do |m|
       m.id = 'A.B.C'
@@ -302,7 +326,7 @@
   let :projfile do
     curr = File.dirname(__FILE__)
     File.join curr, "testdata", "TestingDependencies", "Sample.Commands", "Sample.Commands.fsproj"
-  end 
+  end
 
   subject do
     Albacore::NugetModel::Package.from_xxproj_file projfile,
@@ -343,7 +367,7 @@
     curr = File.dirname(__FILE__)
     File.join curr, "testdata", "TestingDependencies", "Sample.Commands",
               "Sample.Commands.fsproj"
-  end 
+  end
 
   let :opts do
     { project_dependencies: false,
@@ -444,10 +468,10 @@
     let :projfile do
       curr = File.dirname(__FILE__)
       File.join curr, "testdata", "EmptyProject", "EmptyProject.csproj"
-    end 
+    end
     has_not_file 'bin/Debug/Sample.Commands.dll'
-    has_not_file 'bin/Debug/EmptyProject.dll' 
-    has_not_file 'bin/Debug/EmptyProject.xml' 
+    has_not_file 'bin/Debug/EmptyProject.dll'
+    has_not_file 'bin/Debug/EmptyProject.xml'
     has_file 'bin/Release/EmptyProject.dll', 'lib/net45'
   end
 end