require "json"

module Devops
  module API2_0
    module Routes
      module ServerRoutes

        def self.registered(app)

          # Get devops servers list
          #
          # * *Request*
          #   - method : GET
          #   - headers :
          #     - Accept: application/json
          #   - params :
          #     - fields - show server fields, available values: project, deploy_env, provider, remote_user, private_ip, public_ip, created_at, created_by, static, key, reserved_by
          #
          # * *Returns* :
          #   [
          #     {
          #       "id": "instance id",
          #       "chef_node_name": "chef name"
          #     }
          #   ]
          app.get_with_headers "/servers", :headers => [:accept] do
            check_privileges("server", "r")
            fields = []
            if params.key?("fields") and params["fields"].is_a?(Array)
              Devops::Model::Server.fields.each do |k|
                fields.push k if params["fields"].include?(k)
              end
            end
            reserved = (params.key?("reserved") ? true : nil)
            json Devops::API2_0::Handler::Server.new(request, params).servers(fields, reserved)
          end

          # Get chef nodes list
          #
          # * *Request*
          #   - method : GET
          #   - headers :
          #     - Accept: application/json
          #
          # * *Returns* :
          #   [
          #     {
          #       "chef_node_name": "chef name"
          #     }
          #   ]
          app.get_with_headers "/servers/chef", :headers => [:accept] do
            check_privileges("server", "r")
            json Devops::API2_0::Handler::Server.new(request, params).chef_servers
          end

          # Get provider servers list
          #
          # * *Request*
          #   - method : GET
          #   - headers :
          #     - Accept: application/json
          #
          # * *Returns* :
          #   -ec2
          #   [
          #      {
          #       "state": "running",
          #       "name": "name",
          #       "image": "ami-83e4bcea",
          #       "flavor": "m1.small",
          #       "keypair": "ssh key",
          #       "instance_id": "i-8441bfd4",
          #       "dns_name": "ec2-204-236-199-49.compute-1.amazonaws.com",
          #       "zone": "us-east-1d",
          #       "private_ip": "10.215.217.210",
          #       "public_ip": "204.236.199.49",
          #       "launched_at": "2014-04-25 07:56:33 UTC"
          #     }
          #   ]
          #   -openstack
          #   [
          #     {
          #       "state": "ACTIVE",
          #       "name": "name",
          #       "image": "image id",
          #       "flavor": null,
          #       "keypair": "ssh key",
          #       "instance_id": "instance id",
          #       "private_ip": "172.17.0.1"
          #     }
          #   ]
          app.get_with_headers "/servers/:provider", :headers => [:accept] do
            check_privileges("server", "r")
            json Devops::API2_0::Handler::Server.new(request, params).provider_servers(params[:provider])
          end

          # Get server info by :name
          #
          # * *Request*
          #   - method : GET
          #   - headers :
          #     - Accept: application/json
          #   - parameters:
          #     key=instance -> search server by instance_id rather then chef_node_name
          #
          # * *Returns* :
          #   [
          #     {
          #       "chef_node_name": "chef name"
          #     }
          #   ]
          hash = {}
          hash["GET"] = lambda {|id|
            check_privileges("server", "r")
            json Devops::API2_0::Handler::Server.new(request, params).server(id).to_hash
          }

          # Delete devops server
          #
          # * *Request*
          #   - method : DELETE
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "key": "instance", -> search server by instance_id rather then chef_node_name
          #     }
          #
          # * *Returns* :
          #   200 - Deleted
          hash["DELETE"] = lambda {|id|
            check_privileges("server", "w")
            body = create_object_from_json_body(Hash, true)
            key = (body.nil? ? nil : body["key"])
            info, r = Devops::API2_0::Handler::Server.new(request, params).delete(id, key)
            create_response(info, r)
          }
          app.multi_routes "/server/:id", {:headers => [:accept, :content_type]}, hash

          # Create devops server
          #
          # * *Request*
          #   - method : POST
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "project": "project name", -> mandatory parameter
          #       "deploy_env": "env",       -> mandatory parameter
          #       "name": "server_name",     -> if null, name will be generated
          #       "without_bootstrap": null, -> do not install chef on instance if true
          #       "force": null,             -> do not delete server on error
          #       "groups": [],              -> specify special security groups, overrides value from project env
          #       "key": "ssh key",          -> specify ssh key for server, overrides value from project env
          #       "trace": true              -> return output in stream
          #     }
          #
          # * *Returns* : text stream
          app.post_with_headers "/server", :headers => [:content_type] do
            check_privileges("server", "w")
            body = create_object_from_json_body
            project_name = check_string(body["project"], "Parameter 'project' must be a not empty string")
            env_name = check_string(body["deploy_env"], "Parameter 'deploy_env' must be a not empty string")
            server_name = check_string(body["name"], "Parameter 'name' should be null or not empty string", true)
            without_bootstrap = body["without_bootstrap"]
            force = body["force"]
            halt_response("Parameter 'without_bootstrap' should be a null or true") unless without_bootstrap.nil? or without_bootstrap == true
            halt_response("Parameter 'force' should be a null or true") unless force.nil? or force == true
            groups = check_array(body["groups"], "Parameter 'groups' should be null or not empty array of string", String, true)
            key_name = check_string(body["key"], "Parameter 'key' should be null or not empty string", true)
            handler = Devops::API2_0::Handler::Server.new(request, params)
            if body.key?("trace")
              stream() do |out|
                begin
                  status = handler.create_server_stream out, body
                  out << create_status(status)
                rescue IOError => e
                  logger.error e.message
                end
              end
            else
              json handler.create_server body
            end
          end

          # Pause devops server by name
          #
          # * *Request*
          #   - method : POST
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "key": "instance", -> search server by instance_id rather then chef_node_name
          #     }
          #
          # * *Returns* :
          #   200 - Paused
          app.post_with_headers "/server/:node_name/pause", :headers => [:accept, :content_type] do |node_name|
            check_privileges("server", "w")
            body = create_object_from_json_body(Hash, true)
            key = (body.nil? ? nil : body["key"])
            info = Devops::API2_0::Handler::Server.new(request, params).pause_server(node_name, key)
            create_response(info)
          end

          # Unpause devops server by name
          #
          # * *Request*
          #   - method : POST
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "key": "instance", -> search server by instance_id rather then chef_node_name
          #     }
          #
          # * *Returns* :
          #   200 - Unpaused
          app.post_with_headers "/server/:node_name/unpause", :headers => [:accept, :content_type] do |node_name|
            check_privileges("server", "w")
            body = create_object_from_json_body(Hash, true)
            key = (body.nil? ? nil : body["key"])
            info = Devops::API2_0::Handler::Server.new(request, params).unpause_server(node_name, key)
            create_response(info)
          end

          # Reserve devops server
          #
          # * *Request*
          #   - method : POST
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "key": "instance", -> search server by instance_id rather then chef_node_name
          #     }
          #
          # * *Returns* :
          #   200 - Reserved
          app.post_with_headers "/server/:node_name/reserve", :headers => [:accept, :content_type] do |node_name|
            check_privileges("server", "w")
            body = create_object_from_json_body(Hash, true)
            key = (body.nil? ? nil : body["key"])
            Devops::API2_0::Handler::Server.new(request, params).reserve_server(node_name, key)
            create_response("Server '#{node_name}' has been reserved")
          end

          # Unreserve devops server
          #
          # * *Request*
          #   - method : POST
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "key": "instance", -> search server by instance_id rather then chef_node_name
          #     }
          #
          # * *Returns* :
          #   200 - Unreserved
          app.post_with_headers "/server/:node_name/unreserve", :headers => [:accept, :content_type] do |node_name|
            check_privileges("server", "w")
            body = create_object_from_json_body(Hash, true)
            key = (body.nil? ? nil : body["key"])
            Devops::API2_0::Handler::Server.new(request, params).unreserve_server(node_name, key)
            create_response("Server '#{node_name}' has been unreserved")
          end

          # Bootstrap devops server
          #
          # * *Request*
          #   - method : POST
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "instance_id": "instance id", -> mandatory parameter
          #       "name": "server_name", -> if null, name will be generated
          #       "run_list": [], -> specify list of roles and recipes
          #       "bootstrap_template": "template" -> specify ssh key for server, overrides value from project env
          #     }
          #
          # * *Returns* : text stream
          app.post_with_headers "/server/bootstrap", :headers => [:accept, :content_type] do
            check_privileges("server", "w")
            body = create_object_from_json_body(Hash, true)
            id = check_string(body["instance_id"], "Parameter 'instance_id' must be a not empty string")
            name = check_string(body["name"], "Parameter 'name' should be a not empty string", true)
            rl = check_array(body["run_list"], "Parameter 'run_list' should be a not empty array of string", String, true)
            unless rl.nil?
              validator = Validators::Helpers::RunList.new(rl)
              halt_response(validator.message) unless validator.valid?
            end
            t = check_string(body["bootstrap_template"], "Parameter 'bootstrap_template' should be a not empty string", true)

            handler = Devops::API2_0::Handler::Server.new(request, params)
            if body.key?("trace")
              stream() do |out|
                begin
                  status = handler.bootstrap_server_stream out, body
                  out << create_status(status)
                rescue IOError => e
                  logger.error e.message
                end
              end
            else
              handler.bootstrap_server(body)
            end
          end

          # Add external server to devops
          #
          # * *Request*
          #   - method : POST
          #   - headers :
          #     - Accept: application/json
          #     - Content-Type: application/json
          #   - body :
          #     {
          #       "project": "project name", -> mandatory parameter
          #       "deploy_env": "env",       -> mandatory parameter
          #       "key": "ssh key",          -> mandatory parameter
          #       "remote_user": "ssh user", -> mandatory parameter
          #       "private_ip": "ip",         -> mandatory parameter
          #       "public_ip": "ip"
          #     }
          #
          # * *Returns* :
          #   200 - Added
          app.post_with_headers "/server/add", :headers => [:accept, :content_type] do
            check_privileges("server", "w")
            body = create_object_from_json_body
            project = check_string(body["project"], "Parameter 'project' must be a not empty string")
            deploy_env = check_string(body["deploy_env"], "Parameter 'deploy_env' must be a not empty string")
            key = check_string(body["key"], "Parameter 'key' must be a not empty string")
            remote_user = check_string(body["remote_user"], "Parameter 'remote_user' must be a not empty string")
            private_ip = check_string(body["private_ip"], "Parameter 'private_ip' must be a not empty string")
            public_ip = check_string(body["public_ip"], "Parameter 'public_ip' should be a not empty string", true)

            info = Devops::API2_0::Handler::Server.new(request, params).add_server(body)
            create_response(info)
          end

          puts "Server routes initialized"
        end

      end
    end
  end
end