/**
 * Controller for power-operations
 *
 * @module app/serverControl
 * @exports powerOperationsController
 * @name powerOperationsController
 */

window.angular && (function (angular) {
    'use strict';

    angular
        .module('app.serverControl')
        .controller('powerOperationsController', [
            '$scope',
            'APIUtils',
            'dataService',
            'Constants',
            '$timeout',
            '$interval',
            '$interpolate',
            '$q',
            function($scope, APIUtils, dataService, Constants, $timeout,
                     $interval, $interpolate, $q){
                $scope.dataService = dataService;
                $scope.confirm = false;
                $scope.power_confirm = false;
                $scope.warmboot_confirm = false;
                $scope.coldboot_confirm = false;
                $scope.orderly_confirm = false;
                $scope.immediately_confirm = false;
                $scope.loading = false;

                var pollChassisStatusTimer = undefined;
                var pollHostStatusTimer = undefined;
                var pollStartTime = null;

                //@TODO: call api and get proper state
                $scope.toggleState = function(){
                    dataService.server_state = (dataService.server_state == 'Running') ? 'Off': 'Running';
                }

                $scope.powerOn = function(){
                    $scope.loading = true;
                    dataService.setUnreachableState();
                    APIUtils.hostPowerOn().then(function(response){
                        return response;
                    }).then(function(lastStatus) {
                        pollStartTime = new Date();
                        return pollHostStatusTillOn();
                    }).then(function(hostState) {
                        $scope.loading = false;
                    }).catch(function(error){
                        dataService.activateErrorModal(
                          {title: Constants.MESSAGES.POWER_OP.POWER_ON_FAILED,
                           description: error.statusText ?
                               $interpolate(Constants.MESSAGES.ERROR_MESSAGE_DESC_TEMPLATE)(
                                   {status: error.status, description: error.statusText}) :
                               error });
                        $scope.loading = false;
                    });
                }
                $scope.powerOnConfirm = function(){
                    if($scope.confirm) {
                        return;
                    }
                    $scope.confirm = true;
                    $scope.power_confirm = true;
                };

                function setHostState(state){
                    if(state == Constants.HOST_STATE_TEXT.off_code){
                        dataService.setPowerOffState();
                    }else if(state == Constants.HOST_STATE_TEXT.on_code){
                        dataService.setPowerOnState();
                    }else{
                        dataService.setErrorState();
                    }
                }

                function pollChassisStatusTillOff(){
                    var deferred = $q.defer();
                    pollChassisStatusTimer = $interval(function(){
                        var now = new Date();
                        if((now.getTime() - pollStartTime.getTime()) >= Constants.TIMEOUT.CHASSIS_OFF){
                            $interval.cancel(pollChassisStatusTimer);
                            pollChassisStatusTimer = undefined;
                            deferred.reject(new Error(Constants.MESSAGES.POLL.CHASSIS_OFF_TIMEOUT));
                        }
                        APIUtils.getChassisState().then(function(state){
                            if(state === Constants.CHASSIS_POWER_STATE.off_code){
                                $interval.cancel(pollChassisStatusTimer);
                                pollChassisStatusTimer = undefined;
                                deferred.resolve(state);
                            }
                        }).catch(function(error){
                            $interval.cancel(pollChassisStatusTimer);
                            pollChassisStatusTimer = undefined;
                            deferred.reject(error);
                        });
                    }, Constants.POLL_INTERVALS.POWER_OP);

                    return deferred.promise;
                }
                function pollHostStatusTillOn(){
                    var deferred = $q.defer();
                    pollHostStatusTimer = $interval(function(){
                        var now = new Date();
                        if((now.getTime() - pollStartTime.getTime()) >= Constants.TIMEOUT.HOST_ON){
                            $interval.cancel(pollHostStatusTimer);
                            pollHostStatusTimer = undefined;
                            deferred.reject(new Error(Constants.MESSAGES.POLL.HOST_ON_TIMEOUT));
                        }
                        APIUtils.getHostState().then(function(state){
                            setHostState(state);
                            if(state === Constants.HOST_STATE_TEXT.on_code){
                                $interval.cancel(pollHostStatusTimer);
                                pollHostStatusTimer = undefined;
                                deferred.resolve(state);
                            }else if(state === Constants.HOST_STATE_TEXT.error_code){
                                $interval.cancel(pollHostStatusTimer);
                                pollHostStatusTimer = undefined;
                                deferred.reject(new Error(Constants.MESSAGES.POLL.HOST_QUIESCED));
                            }
                        }).catch(function(error){
                            $interval.cancel(pollHostStatusTimer);
                            pollHostStatusTimer = undefined;
                            deferred.reject(error);
                        });
                    }, Constants.POLL_INTERVALS.POWER_OP);

                    return deferred.promise;
                }
                function pollHostStatusTillOff(){
                    var deferred = $q.defer();
                    pollHostStatusTimer = $interval(function(){
                        var now = new Date();
                        if((now.getTime() - pollStartTime.getTime()) >= Constants.TIMEOUT.HOST_OFF){
                            $interval.cancel(pollHostStatusTimer);
                            pollHostStatusTimer = undefined;
                            deferred.reject(new Error(Constants.MESSAGES.POLL.HOST_OFF_TIMEOUT));
                        }
                        APIUtils.getHostState().then(function(state){
                            setHostState(state);
                            if(state === Constants.HOST_STATE_TEXT.off_code){
                                $interval.cancel(pollHostStatusTimer);
                                pollHostStatusTimer = undefined;
                                deferred.resolve(state);
                            }
                        }).catch(function(error){
                            $interval.cancel(pollHostStatusTimer);
                            pollHostStatusTimer = undefined;
                            deferred.reject(error);
                        });
                    }, Constants.POLL_INTERVALS.POWER_OP);

                    return deferred.promise;
                }
                $scope.warmReboot = function(){
                    $scope.loading = true;
                    dataService.setUnreachableState();
                    APIUtils.hostReboot().then(function(response){
                        return response;
                    }).then(function(lastStatus) {
                        pollStartTime = new Date();
                        return pollHostStatusTillOff();
                    }).then(function(hostState) {
                        pollStartTime = new Date();
                        return pollHostStatusTillOn();
                    }).then(function(hostState) {
                        $scope.loading = false;
                    }).catch(function(error){
                        dataService.activateErrorModal(
                          {title: Constants.MESSAGES.POWER_OP.WARM_REBOOT_FAILED,
                           description: error.statusText ?
                               $interpolate(Constants.MESSAGES.ERROR_MESSAGE_DESC_TEMPLATE)(
                                   {status: error.status, description: error.statusText}) :
                               error });
                        $scope.loading = false;
                    });
                };
                $scope.testState = function(){
                    $timeout(function(){
                        dataService.setPowerOffState();
                        $timeout(function(){
                            dataService.setPowerOnState();
                        }, 2000);
                    }, 1000);
                };
                $scope.warmRebootConfirm = function(){
                    if($scope.confirm) {
                        return;
                    }
                    $scope.confirm = true;
                    $scope.warmboot_confirm = true;
                };

                $scope.coldReboot = function(){
                    $scope.loading = true;
                    dataService.setUnreachableState();
                    APIUtils.chassisPowerOff().then(function(state){
                        return state;
                    }).then(function(lastState) {
                        pollStartTime = new Date();
                        return pollChassisStatusTillOff();
                    }).then(function(chassisState) {
                        return APIUtils.hostPowerOn().then(function(hostState){
                            return hostState;
                        })
                    }).then(function(hostState) {
                        pollStartTime = new Date();
                        return pollHostStatusTillOn();
                    }).then(function(state) {
                        $scope.loading = false;
                    }).catch(function(error){
                        dataService.activateErrorModal(
                          {title: Constants.MESSAGES.POWER_OP.COLD_REBOOT_FAILED,
                           description: error.statusText ?
                               $interpolate(Constants.MESSAGES.ERROR_MESSAGE_DESC_TEMPLATE)(
                                   {status: error.status, description: error.statusText}) :
                               error });
                        $scope.loading = false;
                    });
                };
                $scope.coldRebootConfirm = function(){
                    if($scope.confirm) {
                        return;
                    }
                    $scope.confirm = true;
                    $scope.coldboot_confirm = true;
                };

                $scope.orderlyShutdown = function(){
                    $scope.loading = true;
                    dataService.setUnreachableState();
                    APIUtils.hostPowerOff().then(function(response){
                        return response;
                    }).then(function(lastStatus) {
                        pollStartTime = new Date();
                        return pollHostStatusTillOff()
                    }).then(function(hostState) {
                        pollStartTime = new Date();
                        return pollChassisStatusTillOff();
                    }).then(function(chassisState) {
                        $scope.loading = false;
                    }).catch(function(error){
                        dataService.activateErrorModal(
                          {title: Constants.MESSAGES.POWER_OP.ORDERLY_SHUTDOWN_FAILED,
                           description: error.statusText ?
                               $interpolate(Constants.MESSAGES.ERROR_MESSAGE_DESC_TEMPLATE)(
                                   {status: error.status, description: error.statusText}) :
                               error });
                        $scope.loading = false;
                    });
                };
                $scope.orderlyShutdownConfirm = function(){
                    if($scope.confirm) {
                        return;
                    }
                    $scope.confirm = true;
                    $scope.orderly_confirm = true;
                };

                $scope.immediateShutdown = function(){
                    $scope.loading = true;
                    dataService.setUnreachableState();
                    APIUtils.chassisPowerOff().then(function(response){
                        return response;
                    }).then(function(lastStatus) {
                        pollStartTime = new Date();
                        return pollChassisStatusTillOff();
                    }).then(function(chassisState) {
                        dataService.setPowerOffState();
                        $scope.loading = false;
                    }).catch(function(error){
                        dataService.activateErrorModal(
                          {title: Constants.MESSAGES.POWER_OP.IMMEDIATE_SHUTDOWN_FAILED,
                           description: error.statusText ?
                               $interpolate(Constants.MESSAGES.ERROR_MESSAGE_DESC_TEMPLATE)(
                                   {status: error.status, description: error.statusText}) :
                               error });
                        $scope.loading = false;
                    });
                };
                $scope.immediateShutdownConfirm = function(){
                    if($scope.confirm) {
                        return;
                    }
                    $scope.confirm = true;
                    $scope.immediately_confirm = true;
                };
            }
        ]
    );

})(angular);