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import { APPLICATION_STATUS, UPDATE_EVENT, INSTALL_EVENT, UNINSTALL_EVENT } from '../constants';
const {
NO_STATUS,
SCHEDULED,
NOT_INSTALLABLE,
INSTALLABLE,
INSTALLING,
INSTALLED,
ERROR,
UPDATING,
UPDATED,
UPDATE_ERRORED,
UNINSTALLING,
UNINSTALL_ERRORED,
} = APPLICATION_STATUS;
const applicationStateMachine = {
/* When the application initially loads, it will have `NO_STATUS`
* It will transition from `NO_STATUS` once the async backend call is completed
*/
[NO_STATUS]: {
on: {
[SCHEDULED]: {
target: INSTALLING,
},
[NOT_INSTALLABLE]: {
target: NOT_INSTALLABLE,
},
[INSTALLABLE]: {
target: INSTALLABLE,
},
[INSTALLING]: {
target: INSTALLING,
},
[INSTALLED]: {
target: INSTALLED,
},
[ERROR]: {
target: INSTALLABLE,
effects: {
installFailed: true,
},
},
[UPDATING]: {
target: UPDATING,
},
[UPDATED]: {
target: INSTALLED,
},
[UPDATE_ERRORED]: {
target: INSTALLED,
effects: {
updateFailed: true,
},
},
[UNINSTALLING]: {
target: UNINSTALLING,
},
[UNINSTALL_ERRORED]: {
target: INSTALLED,
effects: {
uninstallFailed: true,
},
},
},
},
[NOT_INSTALLABLE]: {
on: {
[INSTALLABLE]: {
target: INSTALLABLE,
},
},
},
[INSTALLABLE]: {
on: {
[INSTALL_EVENT]: {
target: INSTALLING,
effects: {
installFailed: false,
},
},
// This is possible in artificial environments for E2E testing
[INSTALLED]: {
target: INSTALLED,
},
},
},
[INSTALLING]: {
on: {
[INSTALLED]: {
target: INSTALLED,
},
[ERROR]: {
target: INSTALLABLE,
effects: {
installFailed: true,
},
},
},
},
[INSTALLED]: {
on: {
[UPDATE_EVENT]: {
target: UPDATING,
effects: {
updateFailed: false,
updateSuccessful: false,
},
},
[UNINSTALL_EVENT]: {
target: UNINSTALLING,
effects: {
uninstallFailed: false,
uninstallSuccessful: false,
},
},
},
},
[UPDATING]: {
on: {
[UPDATED]: {
target: INSTALLED,
effects: {
updateSuccessful: true,
updateAcknowledged: false,
},
},
[UPDATE_ERRORED]: {
target: INSTALLED,
effects: {
updateFailed: true,
},
},
},
},
[UNINSTALLING]: {
on: {
[INSTALLABLE]: {
target: INSTALLABLE,
effects: {
uninstallSuccessful: true,
},
},
[UNINSTALL_ERRORED]: {
target: INSTALLED,
effects: {
uninstallFailed: true,
},
},
},
},
};
/**
* Determines an application new state based on the application current state
* and an event. If the application current state cannot handle a given event,
* the current state is returned.
*
* @param {*} application
* @param {*} event
*/
const transitionApplicationState = (application, event) => {
const newState = applicationStateMachine[application.status].on[event];
return newState
? {
...application,
status: newState.target,
...newState.effects,
}
: application;
};
export default transitionApplicationState;
|
