Add some methods from Spreadsheet API V4

README.md

@@ -1,3 +1,7 @@
+# 追加メソット
+``GoogleDrive::Spreadsheet#add_worksheet_from_template(name)``
+シートを追加するときにtemplateという名前があればそこからコピーして新たに作る。  
+
 This is a Ruby library to read/write files/spreadsheets in Google Drive/Docs.
 
 NOTE: This is NOT a library to create Google Drive App.
@@ -120,3 +124,5 @@ Ruby 2.0.0 or later. Checked with Ruby 2.3.0.
 ## Author
 
 [Hiroshi Ichikawa](http://gimite.net/en/index.php?Contact)
+
+

lib/api/spreadsheets.rb

@@ -0,0 +1,33 @@
+class SpreadsheetsApi
+  def initialize(access_token, client_id)
+    @access_token = access_token
+    @client_id = client_id
+  end
+
+  # https://developers.google.com/sheets/reference/rest/v4/spreadsheets.sheets/copyTo
+  def copy_to(spreadsheet_id, template_sheet_id, destination_spreadsheet_id)
+    url = "https://sheets.googleapis.com/v4/spreadsheets/#{spreadsheet_id}/sheets/#{template_sheet_id}:copyTo?key=#{@client_id}"
+    uri = URI.parse(url)
+    body = {
+      'destinationSpreadsheetId' => destination_spreadsheet_id
+    }.to_json
+
+    post(uri, body)
+  end
+
+  private
+  def post(uri, body)
+    https = Net::HTTP.new(uri.host, uri.port)
+    https.use_ssl = true
+    req = Net::HTTP::Post.new(uri.path, header)
+    req.body = body
+    https.request(req) # return response
+  end
+
+  def header
+    {
+      'Authorization' => "Bearer #{@access_token}",
+      'Content-Type' => 'application/json'
+    }
+  end
+end

lib/google_drive/file.rb

@@ -7,6 +7,7 @@
 
 require 'google_drive/util'
 require 'google_drive/acl'
+require 'api/spreadsheets'
 
 module GoogleDrive
   # A file in Google Drive, including Google Docs document/spreadsheet/presentation.
@@ -28,6 +29,10 @@ def initialize(session, api_file) #:nodoc:
       @api_file = api_file
       @acl = nil
       delegate_api_methods(self, @api_file, [:title])
+      auth_data = @session.drive.request_options.authorization
+      access_token = auth_data.access_token # client_id
+      client_id = auth_data.client_id
+      @sheet_api = SpreadsheetsApi.new(access_token, client_id)
     end
 
     # Wrapped Google::APIClient::Schema::Drive::V3::File object.

lib/google_drive/spreadsheet.rb

@@ -66,6 +66,24 @@ def worksheet_by_gid(gid)
       worksheets.find { |ws| ws.gid == gid }
     end
 
+    def add_worksheet_from_template(title, template_file_name = 'template')
+      # find template key
+      template_sheet = worksheet_by_title(template_file_name)
+      template_sheet_id = template_sheet.gid
+      # set sheet key
+      spreadsheet_id = template_sheet.spreadsheet.api_file.id
+      res = @sheet_api.copy_to(spreadsheet_id, template_sheet_id, spreadsheet_id)
+      new_sheet_id = JSON::parse(res.body)['sheetId']
+      # select new worksheet
+      new_work_sheet = worksheet_by_gid(new_sheet_id)
+
+      # set title
+      new_work_sheet.title = title
+      new_work_sheet.save
+
+      new_work_sheet
+    end
+
     # Adds a new worksheet to the spreadsheet. Returns added GoogleDrive::Worksheet.
     def add_worksheet(title, max_rows = 100, max_cols = 20)
       xml = <<-"EOS"
@@ -79,5 +97,12 @@ def add_worksheet(title, max_rows = 100, max_cols = 20)
       doc = @session.request(:post, worksheets_feed_url, data: xml)
       Worksheet.new(@session, self, doc.root)
     end
+
+    # https://developers.google.com/sheets/reference/rest/v4/spreadsheets.sheets/copyTo
+    def copy_to(spreadsheet_id, sheet_id, destination_spreadsheet_id)
+      res = @sheet_api.copy_to(spreadsheet_id, sheet_id, destination_spreadsheet_id)
+      new_sheet_id = JSON::parse(res.body)['sheetId']
+      worksheet_by_gid(new_sheet_id) # return new worksheet
+    end
   end
 end