class Raykit::Version

def self.bump(version)
    # major.minor[.build[.revision]]  (example: 1.2.12.102)

    version_ints = version.split('.').map{|s| s.to_i}
    version_ints[-1] = version_ints.last + 1;
    version_ints.map{|i| i.to_s}.join('.')
end

def self.bump_file(filename)
    if(!File.exist?(filename))
        warn "Raykit::Version.bump_file filename '#{filename}' does not exist."
    end
    old_version=''
    if(filename.include?('.gemspec'))
        old_version=detect_from_file(filename,/version\s?=\s?['|"]([.\d]+)['|"]/,false)
    end
    if(filename.include?('.csproj'))
        old_version=detect_from_file(filename,/<Version>([-\w\d.]+)</,false)
    end
    if(old_version.length > 0)
        new_version = bump(old_version)
        set_version_in_file(filename,new_version)
    end
    new_version
end

def self.detect(name,verbose=false)
    version=detect_from_file("#{name}/#{name}.csproj",/<Version>([-\w\d.]+)</,verbose)
    return version if(version.length>0)
    version=detect_from_file("#{name}/Properties/AssemblyInfo.cs",/^\[assembly: AssemblyVersion\(\"([.\w]+)/,verbose)
    return version if(version.length>0)
    version=detect_from_file("#{name}.gemspec",/version[\s]+=[\s]+['"]([\w.]+)['"]/,verbose)
    return version if(version.length>0)
    version=detect_from_file("#{name}.gemspec",/version\s?=\s?['|"]([.\d]+)['|"]/,verbose)
    return version if(version.length>0)
    version=detect_from_file("#{name}.nuspec",/<[Vv]ersion>([\d.]+)</,verbose)
    return version if(version.length>0)
    if(verbose)
        warning="\u26A0"
        symbol=Rainbow(warning.encode('utf-8')).yellow
        puts symbol + ' version not detected'
    end
    ''
end

def self.detect_from_file(filename,regex,verbose)
    version=''
    if(File.exists?(filename))
        match = IO.read(filename).match(regex)
        if(!match.nil? && match.captures.length>0)
            version = match.captures[0]
        end
    else
        return ''
    end
    if(verbose)
        if(version.length > 0)
            puts "version detected in #{filename}"
        else
            puts "no version detected in #{filename}, regex #{regex.source}"
        end
    end
    version
end

def self.set_version_in_file(filename,version)
    text=IO.read(filename)
    if(filename.include?('.gemspec'))
        new_text=text.gsub(/version\s?=\s?['|"]([.\d]+)['|"]/,"version='#{version}'")
    end
    if(filename.include?('.csproj'))
        new_text=text.gsub(/<Version>([-\w\d.]+)</,"<Version>#{version}<")
    end
    #new_text=text.gsub(/<Version>([-\w\d.]+)</,"<Version>#{version}<")

    #new_text=new_text.gsub(/version[\s]+=\s?['|"]([.\d]+)['|"]/,"version='#{version}'")

    #new_text=new_text.gsub(/Version="([.\d]+)"/,"Version=\"#{version}\"")

    File.open(filename,'w'){|f|f.write(new_text)} if(new_text!=text)
end

def self.sync_file_versions(source_filename,destination_filename)
    version = Version.detect_from_file(source_filename,/<Version>([-\w\d.]+)</,false)
    Version.set_version_in_file(destination_filename,version)
end