Notes/static/js/session.mjs

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export class Session {
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constructor(app) {//{{{
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this.app = app
this.UUID = ''
this.initialized = false
this.UserID = 0
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}//}}}
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initialize() {//{{{
// Retrieving the stored session UUID, if any.
// If one found, validate with server.
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// If the browser doesn't know anything about a session,
// a call to /session/create is necessary to retrieve a session UUID.
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let uuid = window.localStorage.getItem("session.UUID")
if (uuid === null) {
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this.create()
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return
}
// When loading the page, the web app needs to know session information
// such as user ID and possibly some state to render properly.
//
// A call to /session/retrieve with a session UUID validates that the
// session is still valid and returns all session information.
this.UUID = uuid
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this.app.request('/_session/retrieve', {})
.then(res => {
if (res.Error === undefined) {
// Session exists on server.
// Not necessarily authenticated.
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this.UserID = res.Session.UserID // could be 0
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this.initialized = true
this.app.forceUpdate()
}
})
.catch(this.app.responseError)
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}//}}}
create() {//{{{
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this.app.request('/_session/new', {})
.then(res => {
this.UUID = res.Session.UUID
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window.localStorage.setItem('session.UUID', this.UUID)
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this.initialized = true
this.app.forceUpdate()
})
.catch(this.responseError)
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}//}}}
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reset() {//{{{
window.localStorage.removeItem('session.UUID')
this.initialized = false
this.UserID = 0
}//}}}
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authenticate(username, password) {//{{{
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this.app.login.current.authentication_failed.value = false
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this.app.request('/_session/authenticate', {
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username,
password,
})
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.then(res => {
if (res.Authenticated) {
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this.UserID = res.UserID
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this.app.forceUpdate()
} else {
this.app.login.current.authentication_failed.value = true
}
})
.catch(this.app.responseError)
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}//}}}
authenticated() {//{{{
return this.UserID != 0
}//}}}
}
// vim: foldmethod=marker