221 lines
8.8 KiB
JavaScript
221 lines
8.8 KiB
JavaScript
// validation function which checks the proposed file's type, size, and name
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const validationFunctions = {
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validateFile: function (file) {
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if (!file) {
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console.log('no file found');
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throw new Error('no file provided');
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}
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if (/'/.test(file.name)) {
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console.log('file name had apostrophe in it');
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throw new Error('apostrophes are not allowed in the file name');
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}
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// validate size and type
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switch (file.type) {
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case 'image/jpeg':
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case 'image/jpg':
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case 'image/png':
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if (file.size > 10000000) {
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console.log('file was too big');
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throw new Error('Sorry, images are limited to 10 megabytes.');
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}
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break;
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case 'image/gif':
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if (file.size > 50000000) {
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console.log('file was too big');
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throw new Error('Sorry, .gifs are limited to 50 megabytes.');
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}
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break;
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case 'video/mp4':
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if (file.size > 50000000) {
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console.log('file was too big');
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throw new Error('Sorry, videos are limited to 50 megabytes.');
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}
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break;
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default:
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console.log('file type is not supported');
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throw new Error(file.type + ' is not a supported file type. Only, .jpeg, .png, .gif, and .mp4 files are currently supported.')
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}
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},
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// validation function that checks to make sure the claim name is valid
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validateClaimName: function (name) {
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// ensure a name was entered
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if (name.length < 1) {
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throw new NameError("You must enter a name for your url");
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}
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// validate the characters in the 'name' field
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const invalidCharacters = /[^A-Za-z0-9,-]/g.exec(name);
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if (invalidCharacters) {
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throw new NameError('"' + invalidCharacters + '" characters are not allowed');
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}
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},
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validateChannelName: function (name) {
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name = name.substring(name.indexOf('@') + 1);
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// ensure a name was entered
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if (name.length < 1) {
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throw new ChannelNameError("You must enter a name for your channel");
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}
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// validate the characters in the 'name' field
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const invalidCharacters = /[^A-Za-z0-9,-,@]/g.exec(name);
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if (invalidCharacters) {
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throw new ChannelNameError('"' + invalidCharacters + '" characters are not allowed');
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}
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},
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validatePassword: function (password) {
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if (password.length < 1) {
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throw new ChannelPasswordError("You must enter a password for you channel");
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}
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},
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// validation functions to check claim & channel name eligibility as the inputs change
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isNameAvailable: function (name, apiUrl) {
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const url = apiUrl + name;
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return getRequest(url)
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},
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showError: function (errorDisplay, errorMsg) {
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errorDisplay.hidden = false;
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errorDisplay.innerText = errorMsg;
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},
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hideError: function (errorDisplay) {
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errorDisplay.hidden = true;
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errorDisplay.innerText = '';
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},
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showSuccess: function (successElement) {
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successElement.hidden = false;
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successElement.innerHTML = "✔";
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},
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hideSuccess: function (successElement) {
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successElement.hidden = true;
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successElement.innerHTML = "";
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},
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checkAvailability: function (name, successDisplayElement, errorDisplayElement, validateName, errorMessage, apiUrl) {
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var that = this;
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try {
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// check to make sure the characters are valid
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validateName(name);
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// check to make sure it is available
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that.isNameAvailable(name, apiUrl)
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.then(function (result) {
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if (result === true) {
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that.hideError(errorDisplayElement);
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that.showSuccess(successDisplayElement)
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} else {
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that.hideSuccess(successDisplayElement);
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that.showError(errorDisplayElement, errorMessage);
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}
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})
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.catch(error => {
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that.hideSuccess(successDisplayElement);
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that.showError(errorDisplayElement, error.message);
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});
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} catch (error) {
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that.hideSuccess(successDisplayElement);
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that.showError(errorDisplayElement, error.message);
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}
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},
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checkChannelName: function (name) {
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const successDisplayElement = document.getElementById('input-success-channel-name');
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const errorDisplayElement = document.getElementById('input-error-channel-name');
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name = `@${name}`;
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this.checkAvailability(name, successDisplayElement, errorDisplayElement, this.validateChannelName, 'Sorry, that name is already taken', '/api/channel-is-available/');
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},
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// validation function which checks all aspects of the publish submission
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validateFilePublishSubmission: function (stagedFiles, metadata) {
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const channelName = metadata.channelName;
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const claimName = metadata.name;
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var that = this;
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return new Promise(function (resolve, reject) {
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// 1. make sure 1 file was staged
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if (!stagedFiles) {
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reject(new FileError("Please select a file"));
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return;
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} else if (stagedFiles.length > 1) {
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reject(new FileError("Only one file is allowed at a time"));
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return;
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}
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// 2. validate the file's name, type, and size
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try {
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that.validateFile(stagedFiles[0]);
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} catch (error) {
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reject(error);
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return;
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}
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// 3. validate that a channel was chosen
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if (channelName === 'new' || channelName === 'login') {
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reject(new ChannelNameError("Please log in to a channel"));
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return;
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}
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;
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// 4. validate the claim name
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try {
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that.validateClaimName(claimName);
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} catch (error) {
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reject(error);
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return;
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}
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// if all validation passes, check availability of the name (note: do we need to re-validate channel name vs. credentials as well?)
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return that.isNameAvailable(claimName, '/api/claim-is-available/')
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.then(result => {
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if (result) {
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resolve();
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} else {
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reject(new NameError('Sorry, that ending is already taken'));
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}
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})
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.catch(error => {
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reject(error);
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});
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});
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},
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// validation function which checks all aspects of a new channel submission
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validateNewChannelSubmission: function (userName, password) {
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const channelName = `@${userName}`;
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var that = this;
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return new Promise(function (resolve, reject) {
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// 1. validate name
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try {
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that.validateChannelName(channelName);
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} catch (error) {
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return reject(error);
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}
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// 2. validate password
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try {
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that.validatePassword(password);
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} catch (error) {
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return reject(error);
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}
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// 3. if all validation passes, check availability of the name
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that.isNameAvailable(channelName, '/api/channel-is-available/') // validate the availability
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.then(function(result) {
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if (result) {
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resolve();
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} else {
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reject(new ChannelNameError('Sorry, that name is already taken'));
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}
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})
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.catch(function(error) {
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console.log('error evaluating channel name availability', error);
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reject(error);
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});
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});
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},
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// validation function which checks all aspects of a new channel login
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validateNewChannelLogin: function (userName, password) {
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const channelName = `@${userName}`;
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var that = this;
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return new Promise(function (resolve, reject) {
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// 1. validate name
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try {
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that.validateChannelName(channelName);
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} catch (error) {
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return reject(error);
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}
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// 2. validate password
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try {
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that.validatePassword(password);
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} catch (error) {
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return reject(error);
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}
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resolve();
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});
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}
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};
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