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Update: added feature to test the network connection when transferrin…
…g data to the LMS API (fixes #268).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| import Adapt from 'core/js/adapt'; | ||
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| export default class Connection { | ||
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| constructor({ | ||
| _isEnabled = false, | ||
| _silentRetryLimit = 0, | ||
| _silentRetryDelay = 2000 | ||
| } = {}, ScormWrapper) { | ||
| this._isEnabled = _isEnabled; | ||
| this._isInProgress = false; | ||
| this._isSilentDisconnection = false; | ||
| this._isDisconnected = false; | ||
| this._silentRetryLimit = _silentRetryLimit; | ||
| this._silentRetryDelay = _silentRetryDelay; | ||
| this._silentRetryTimeout = null; | ||
| this._silentRetryCount = 0; | ||
| this._scorm = ScormWrapper; | ||
| } | ||
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| async test() { | ||
| if (!this._isEnabled || this._isInProgress) return; | ||
| this._isInProgress = true; | ||
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| fetch(`connection.json?nocache=${Date.now()}`) | ||
| .then(response => { | ||
| (response?.ok) ? this.onConnectionSuccess() : this.onConnectionError(); | ||
| }) | ||
| .catch(error => { | ||
| this.onConnectionError(); | ||
| }); | ||
| } | ||
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| reset() { | ||
| this._silentRetryCount = 0; | ||
| this._isSilentDisconnection = false; | ||
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| if (this._silentRetryTimeout !== null) { | ||
| window.clearTimeout(this._silentRetryTimeout); | ||
| this._silentRetryTimeout = null; | ||
| } | ||
| } | ||
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| stop() { | ||
| this.reset(); | ||
| this._isEnabled = false; | ||
| } | ||
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| /** | ||
| * @todo Remove need for commit? | ||
| */ | ||
| onConnectionSuccess() { | ||
| if (this._isDisconnected) { | ||
| this._scorm.commit(); | ||
| if (!this._isSilentDisconnection) Adapt.trigger('tracking:connectionSuccess'); | ||
| } | ||
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| this._isInProgress = false; | ||
| this._isDisconnected = false; | ||
| this.reset(); | ||
| } | ||
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| onConnectionError() { | ||
| if (!this._isEnabled) return; | ||
| this._isInProgress = false; | ||
| this._isDisconnected = true; | ||
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| if (this._silentRetryCount < this._silentRetryLimit) { | ||
| this._isSilentDisconnection = true; | ||
| this._silentRetryCount++; | ||
| this._silentRetryTimeout = window.setTimeout(this.test.bind(this), this._silentRetryDelay); | ||
| } else { | ||
| this.reset(); | ||
| Adapt.trigger('tracking:connectionError', this.test.bind(this)); | ||
| } | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| { | ||
| "success": true | ||
| } |