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MOBILE-2675 course: Fallback for fetching module info in offline

main
Albert Gasset 2018-10-29 10:32:27 +01:00
parent 8a4563aa28
commit d4b3496f79
1 changed files with 68 additions and 48 deletions
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116
src/core/course/providers/course.ts
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@ -303,35 +303,18 @@ export class CoreCourseProvider {
siteId?: string, modName?: string): Promise<any> {
siteId = siteId || this.sitesProvider.getCurrentSiteId();
let promise;
if (!courseId) {
// No courseId passed, try to retrieve it.
promise = this.getModuleBasicInfo(moduleId, siteId).then((module) => {
return module.course;
});
} else {
promise = Promise.resolve(courseId);
}
return promise.then((cid) => {
courseId = cid;
// Get the site.
return this.sitesProvider.getSite(siteId);
}).then((site) => {
// We have courseId, we can use core_course_get_contents for compatibility.
this.logger.debug(`Getting module ${moduleId} in course ${courseId}`);
// Helper function to do the WS request without processing the result.
const doRequest = (site: CoreSite, moduleId: number, modName: string, includeStealth: boolean, preferCache: boolean):
Promise<any> => {
const params: any = {
courseid: courseId,
options: []
},
preSets: any = {
omitExpires: preferCache
};
courseid: courseId,
options: []
};
const preSets: CoreSiteWSPreSets = {
omitExpires: preferCache
};
if (this.canRequestStealthModules(site)) {
if (includeStealth) {
params.options.push({
name: 'includestealthmodules',
value: 1
@ -354,35 +337,72 @@ export class CoreCourseProvider {
}
if (!preferCache && ignoreCache) {
preSets.getFromCache = 0;
preSets.emergencyCache = 0;
}
if (sectionId) {
params.options.push({
name: 'sectionid',
value: sectionId
});
preSets.getFromCache = false;
preSets.emergencyCache = false;
}
return site.read('core_course_get_contents', params, preSets).catch(() => {
// Error getting the module. Try to get all contents (without filtering by module).
return this.getSections(courseId, false, false, preSets, siteId);
}).then((sections) => {
for (let i = 0; i < sections.length; i++) {
const section = sections[i];
for (let j = 0; j < section.modules.length; j++) {
const module = section.modules[j];
if (module.id == moduleId) {
module.course = courseId;
return module;
}
// The module might still be cached by a request with different parameters.
if (!ignoreCache && !this.appProvider.isOnline()) {
if (includeStealth) {
// Older versions didn't include the includestealthmodules option.
return doRequest(site, moduleId, modName, false, true);
} else if (modName) {
// Falback to the request for the given moduleId only.
return doRequest(site, moduleId, undefined, this.canRequestStealthModules(site), true);
}
}
return Promise.reject(null);
});
};
let promise;
if (!courseId) {
// No courseId passed, try to retrieve it.
promise = this.getModuleBasicInfo(moduleId, siteId).then((module) => {
courseId = module.course;
});
} else {
promise = Promise.resolve();
}
return promise.then(() => {
return this.sitesProvider.getSite(siteId);
}).then((site) => {
// We have courseId, we can use core_course_get_contents for compatibility.
this.logger.debug(`Getting module ${moduleId} in course ${courseId}`);
return doRequest(site, moduleId, modName, this.canRequestStealthModules(site), preferCache);
}).catch(() => {
// Error getting the module. Try to get all contents (without filtering by module).
const preSets: CoreSiteWSPreSets = {
omitExpires: preferCache
};
if (!preferCache && ignoreCache) {
preSets.getFromCache = false;
preSets.emergencyCache = false;
}
return this.getSections(courseId, false, false, preSets, siteId);
}).then((sections) => {
for (let i = 0; i < sections.length; i++) {
const section = sections[i];
if (sectionId != null && !isNaN(sectionId) && sectionId != section.id) {
continue;
}
for (let j = 0; j < section.modules.length; j++) {
const module = section.modules[j];
if (module.id == moduleId) {
module.course = courseId;
return module;
}
}
}
return Promise.reject(null);
});
}