class Gitlab::Client
  # Defines methods related to repositories.
  # @see https://github.com/gitlabhq/gitlabhq/blob/master/doc/api/repositories.md
  module Repositories
    # Get the contents of a file
    #
    # @example
    #   Gitlab.file_contents(42, 'Gemfile')
    #   Gitlab.repo_file_contents(3, 'Gemfile', 'ed899a2f4b50b4370feeea94676502b42383c746')
    #
    # @param  [Integer] project The ID of a project.
    # @param  [String] filepath The relative path of the file in the repository
    # @param  [String] ref The name of a repository branch or tag or if not given the default branch.
    # @return [String]
    def file_contents(project, filepath, ref='master')
      ref = URI.encode(ref, /\W/)
      get "/projects/#{project}/repository/blobs/#{ref}?filepath=#{filepath}",
          format: nil,
          headers: { Accept: 'text/plain' },
          parser: ::Gitlab::Request::Parser
    end
    alias_method :repo_file_contents, :file_contents

    # Get file tree project (root level).
    #
    # @example
    #   Gitlab.tree(42)
    #   Gitlab.tree(42, { path: 'Gemfile' })
    #
    # @param  [Integer] project The ID of a project.
    # @param  [Hash] options A customizable set of options.
    # @option options [String] :path The path inside repository.
    # @option options [String] :ref_name The name of a repository branch or tag.
    # @return [Gitlab::ObjectifiedHash]
    def tree(project, options={})
      get("/projects/#{project}/repository/tree", query: options)
    end
    alias_method :repo_tree, :tree

    # Compares branches, tags or commits.
    #
    # @example
    #   Gitlab.compare(42, 'master', 'feature/branch')
    #   Gitlab.repo_compare(42, 'master', 'feature/branch')
    #
    # @param [Integer] project The ID of a project.
    # @param [String] from The commit SHA or branch name of from branch.
    # @param [String] to The commit SHA or branch name of to branch.
    # @return [Gitlab::ObjectifiedHash]
    def compare(project, from, to)
      get("/projects/#{project}/repository/compare", query: { from: from, to: to })
    end
    alias_method :repo_compare, :compare
  end
end