hellojs-xiaotian/src/modules/instagram.js

A clientside Javascript library for standardizing requests to OAuth2 web services (and OAuth1 - with a shim)

(function(hello) {

	hello.init({

		instagram: {

			name: 'Instagram',

			oauth: {
				// See: http://instagram.com/developer/authentication/
				version: 2,
				auth: 'https://instagram.com/oauth/authorize/',
				grant: 'https://api.instagram.com/oauth/access_token'
			},

			// Refresh the access_token once expired
			refresh: true,

			scope: {
				basic: 'basic',
				photos: '',
				friends: 'relationships',
				publish: 'likes comments',
				email: '',
				share: '',
				publish_files: '',
				files: '',
				videos: '',
				offline_access: ''
			},

			scope_delim: ' ',

			base: 'https://api.instagram.com/v1/',

			get: {
				me: 'users/self',
				'me/feed': 'users/self/feed?count=@{limit|100}',
				'me/photos': 'users/self/media/recent?min_id=0&count=@{limit|100}',
				'me/friends': 'users/self/follows?count=@{limit|100}',
				'me/following': 'users/self/follows?count=@{limit|100}',
				'me/followers': 'users/self/followed-by?count=@{limit|100}',
				'friend/photos': 'users/@{id}/media/recent?min_id=0&count=@{limit|100}'
			},

			post: {
				'me/like': function(p, callback) {
					var id = p.data.id;
					p.data = {};
					callback('media/' + id + '/likes');
				}
			},

			del: {
				'me/like': 'media/@{id}/likes'
			},

			wrap: {
				me: function(o) {

					formatError(o);

					if ('data' in o) {
						o.id = o.data.id;
						o.thumbnail = o.data.profile_picture;
						o.name = o.data.full_name || o.data.username;
					}

					return o;
				},

				'me/friends': formatFriends,
				'me/following': formatFriends,
				'me/followers': formatFriends,
				'me/photos': function(o) {

					formatError(o);
					paging(o);

					if ('data' in o) {
						o.data = o.data.filter(function(d) {
							return d.type === 'image';
						});

						o.data.forEach(function(d) {
							d.name = d.caption ? d.caption.text : null;
							d.thumbnail = d.images.thumbnail.url;
							d.picture = d.images.standard_resolution.url;
							d.pictures = Object.keys(d.images)
								.map(function(key) {
									var image = d.images[key];
									return formatImage(image);
								})
								.sort(function(a, b) {
									return a.width - b.width;
								});
						});
					}

					return o;
				},

				'default': function(o) {
					o = formatError(o);
					paging(o);
					return o;
				}
			},

			// Instagram does not return any CORS Headers
			// So besides JSONP we're stuck with proxy
			xhr: function(p, qs) {

				var method = p.method;
				var proxy = method !== 'get';

				if (proxy) {

					if ((method === 'post' || method === 'put') && p.query.access_token) {
						p.data.access_token = p.query.access_token;
						delete p.query.access_token;
					}

					// No access control headers
					// Use the proxy instead
					p.proxy = proxy;
				}

				return proxy;
			},

			// No form
			form: false
		}
	});

	function formatImage(image) {
		return {
			source: image.url,
			width: image.width,
			height: image.height
		};
	}

	function formatError(o) {
		if (typeof o === 'string') {
			return {
				error: {
					code: 'invalid_request',
					message: o
				}
			};
		}

		if (o && 'meta' in o && 'error_type' in o.meta) {
			o.error = {
				code: o.meta.error_type,
				message: o.meta.error_message
			};
		}

		return o;
	}

	function formatFriends(o) {
		paging(o);
		if (o && 'data' in o) {
			o.data.forEach(formatFriend);
		}

		return o;
	}

	function formatFriend(o) {
		if (o.id) {
			o.thumbnail = o.profile_picture;
			o.name = o.full_name || o.username;
		}
	}

	// See: http://instagram.com/developer/endpoints/
	function paging(res) {
		if ('pagination' in res) {
			res.paging = {
				next: res.pagination.next_url
			};
			delete res.pagination;
		}
	}

})(hello);