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Code Issues Releases Wiki Activity

split out retrive and put methods

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This commit is contained in:
Fred Chasen 2018-10-29 08:58:31 -07:00
parent 363be16fd9
commit 51a573dd90
2 changed files with 70 additions and 45 deletions
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107
src/store.js
View file

@ -103,7 +103,25 @@ class Store {
}
/**
* Request a url from storage
* Put binary data from a url to storage
* @param {string} url a url to request from storage
* @return {Promise<Blob>}
*/
put(url) {
let encodedUrl = window.encodeURIComponent(url);
return localforage.getItem(encodedUrl).then((result) => {
if (!result) {
return this.requester(url, "binary", withCredentials, headers).then((data) => {
return localforage.setItem(encodedUrl, data);
});
}
return result;
});
}
/**
* Request a url
* @param {string} url a url to request from storage
* @param {string} [type] specify the type of the returned result
* @param {boolean} [withCredentials]
@ -111,54 +129,57 @@ class Store {
* @return {Promise<Blob | string | JSON | Document | XMLDocument>}
*/
request(url, type, withCredentials, headers){
if (this.online) {
// From network
return this.requester(url, type, withCredentials, headers).then((data) => {
// save to store if not present
this.put(url);
return data;
})
} else {
// From store
return this.retrieve(url, type);
}
}
/**
* Request a url from storage
* @param {string} url a url to request from storage
* @param {string} [type] specify the type of the returned result
* @return {Promise<Blob | string | JSON | Document | XMLDocument>}
*/
retrieve(url, type) {
var deferred = new defer();
var response;
var path = new Path(url);
if (this.online) {
return this.requester(url, type, withCredentials, headers).then((data) => {
// from network
let encodedUrl = window.encodeURIComponent(url);
localforage.getItem(encodedUrl).then((result) => {
if (!result) {
this.requester(url, "binary", withCredentials, headers).then((data) => {
localforage.setItem(encodedUrl, data);
});
}
});
return data;
})
} else {
// If type isn't set, determine it from the file extension
if(!type) {
type = path.extension;
}
if(type == "blob"){
response = this.getBlob(url);
} else {
response = this.getText(url);
}
return response.then((r) => {
var deferred = new defer();
var result;
if (r) {
result = this.handleResponse(r, type);
deferred.resolve(result);
} else {
deferred.reject({
message : "File not found in storage: " + url,
stack : new Error().stack
});
}
return deferred.promise;
});
// If type isn't set, determine it from the file extension
if(!type) {
type = path.extension;
}
if(type == "blob"){
response = this.getBlob(url);
} else {
response = this.getText(url);
}
return response.then((r) => {
var deferred = new defer();
var result;
if (r) {
result = this.handleResponse(r, type);
deferred.resolve(result);
} else {
deferred.reject({
message : "File not found in storage: " + url,
stack : new Error().stack
});
}
return deferred.promise;
});
}
/**

8
types/store.d.ts vendored
View file

@ -4,9 +4,13 @@ import Resources from "./resources";
export default class Store {
constructor();
add(resources: Resources, force?: boolean): Promise<Array<object>>;
add(resources: Resources, force?: boolean): Promise<Array<object>>;
request(url: string, type?: string, withCredentials?: boolean, headers?: object): Promise<Blob | string | JSON | Document | XMLDocument>;
put(url: string): Promise<Blob>;
request(url: string, type?: string, withCredentials?: boolean, headers?: object): Promise<Blob | string | JSON | Document | XMLDocument>;
retrieve(url: string, type?: string): Promise<Blob | string | JSON | Document | XMLDocument>;
getBlob(url: string, mimeType?: string): Promise<Blob>;