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remotestorage-doagain.js
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remotestorage-doagain.js
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var jsonSchema = {
"$id": "http://doagain.karl.berlin/schema.json",
"type": "object",
"definitions": {},
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"entries": {
"$id": "/properties/entries",
"type": "array",
"items": {
"$id": "/properties/entries/items",
"type": "object",
"properties": {
"description": {
"$id": "/properties/entries/items/properties/description",
"type": "string",
"default": "",
"examples": [
"bar"
]
},
"completed": {
"$id": "/properties/entries/items/properties/completed",
"type": "boolean",
"default": false,
"examples": [
false
]
},
"editing": {
"$id": "/properties/entries/items/properties/editing",
"type": "boolean",
"default": false,
"examples": [
false
]
},
"id": {
"$id": "/properties/entries/items/properties/id",
"type": "integer",
"default": 0,
"examples": [
11
]
},
"doneAt": {
"$id": "/properties/entries/items/properties/doneAt",
"type": "array",
"items": {
"$id": "/properties/entries/items/properties/doneAt/items",
"type": "integer",
"title": "List of unixtimes when the item has been done",
"default": 0,
"examples": [
1493360866108,
1493360862018
]
}
},
"tags": {
"$id": "/properties/entries/items/properties/tags",
"type": "array"
}
}
}
},
"field": {
"$id": "/properties/field",
"type": "string",
"title": "Input in the text field",
"default": "",
"examples": [
""
]
},
"uid": {
"$id": "/properties/uid",
"type": "integer",
"title": "ID for next added element",
"default": 0,
"examples": [
46
]
},
"visibility": {
"$id": "/properties/visibility",
"type": ["string", "null"],
"title": "Which category is shown",
"default": "",
"examples": [
"food"
]
}
}
}
var RemotestorageDoagain = { name: 'doagain', builder: function(privateClient, publicClient) {
privateClient.declareType('doagain-store', jsonSchema);
return {
exports: {
save: function(state) {
return privateClient.storeObject('doagain-store', 'doagain.json', state);
},
load: function() {
return privateClient.getObject('doagain.json');
},
onStateChange: function(callback) {
privateClient.on('change', function (evt) {
if (evt.origin === 'remote' || evt.origin === 'conflict') {
console.debug('Use remote data:', evt.origin, evt.newValue);
if (evt.origin === 'conflict') {
// Create a backup for the case that important data has
// been lost during conflict resolution.
localStorage.setItem(
'doagain-backup-' + (new Date()).toISOString(),
JSON.stringify(evt.oldValue)
);
// Keep all new entries and add old entries which are not
// present in the new data.
var newDescriptions = evt.newValue.entries.map(function (e) {return e.description});
evt.oldValue.entries.forEach(function(entry) {
if (newDescriptions.indexOf(entry.description) === -1) {
evt.newValue.entries.push(entry);
}
});
evt.newValue.uid = Math.max(evt.oldValue.uid, evt.newValue.uid)
console.log('resolved conflict')
}
// Let Elm know of new state.
// This will also call save and thereby mark conflicts as resolved, but save must not be called from the change event handler, therefore this is executed in setTimeout.
setTimeout(function() {
callback(evt.newValue);
});
}
});
},
}
}
}};