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, PRE_INSTALLED, UNINSTALLED, } = 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, }, }, [PRE_INSTALLED]: { target: PRE_INSTALLED, }, [UNINSTALLED]: { target: UNINSTALLED, }, }, }, [NOT_INSTALLABLE]: { on: { [INSTALLABLE]: { target: INSTALLABLE, }, }, }, [INSTALLABLE]: { on: { [INSTALL_EVENT]: { target: INSTALLING, effects: { installFailed: false, }, }, [NOT_INSTALLABLE]: { target: NOT_INSTALLABLE, }, [INSTALLED]: { target: INSTALLED, effects: { installFailed: false, }, }, [UNINSTALLED]: { target: UNINSTALLED, effects: { installFailed: false, }, }, }, }, [INSTALLING]: { on: { [INSTALLED]: { target: INSTALLED, }, [ERROR]: { target: INSTALLABLE, effects: { installFailed: true, }, }, }, }, [INSTALLED]: { on: { [UPDATE_EVENT]: { target: UPDATING, effects: { updateFailed: false, updateSuccessful: false, }, }, [NOT_INSTALLABLE]: { target: NOT_INSTALLABLE, }, [UNINSTALL_EVENT]: { target: UNINSTALLING, effects: { uninstallFailed: false, uninstallSuccessful: false, }, }, [UNINSTALLED]: { target: UNINSTALLED, }, [ERROR]: { target: INSTALLABLE, effects: { installFailed: true, }, }, }, }, [PRE_INSTALLED]: { on: { [UPDATE_EVENT]: { target: UPDATING, effects: { updateFailed: false, updateSuccessful: false, }, }, [NOT_INSTALLABLE]: { target: NOT_INSTALLABLE, }, [UNINSTALL_EVENT]: { target: UNINSTALLING, effects: { uninstallFailed: false, uninstallSuccessful: false, }, }, }, }, [UPDATING]: { on: { [UPDATED]: { target: INSTALLED, effects: { updateSuccessful: true, }, }, [UPDATE_ERRORED]: { target: INSTALLED, effects: { updateFailed: true, }, }, }, }, [UNINSTALLING]: { on: { [INSTALLABLE]: { target: INSTALLABLE, effects: { uninstallSuccessful: true, }, }, [UNINSTALL_ERRORED]: { target: INSTALLED, effects: { uninstallFailed: true, }, }, }, }, [UNINSTALLED]: { on: { [INSTALLED]: { target: INSTALLED, }, [ERROR]: { target: INSTALLABLE, effects: { installFailed: 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 stateMachine = applicationStateMachine[application.status]; const newState = stateMachine !== undefined ? stateMachine.on[event] : false; return newState ? { ...application, status: newState.target, ...newState.effects, } : application; }; export default transitionApplicationState;