OutlookDemo Project:

Video Link:-

https://youtu.be/owXMSnh6p-s

(1) Problem Statement :-

Build an iOS app that replicates the basic features described below of the Calendar and Agenda views on the Outlook iOS (iPhone) app.

(1.1) Requirements :-

• The Calendar view is a continuously scrolling view that allows the user to browse between days of the year. Tapping on a date should update the information displayed in the Agenda view.

• The Agenda view is a continuously scrolling view that allows the user to browse events in chronological order. Moving between dates should update the information displayed in the Calendar view.

• Make sure the expansion and contraction interaction between the Calendar view and Agenda view is fast and fluid

• Use a static data set for your calendar events

(1.2) Bonus: Networking Challenge : -

• Integrate an internet data source to retrieve the weather forecast for the user's device location. Display that information wherever you think makes the most sense.

(2) Solution :-

• Application contains the calendar view and the calendar view dates provides its agenda for the tapped date on calendar view.

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(2.1) View Setup :-

(2.1.1) Top View : It consists of Month description Label.

(2.1.2) Horizontal stackview: which is for Days(M, T, W, etc..)

(2.1.3) Calendar View : below that One UiView [inside UiView there is programatically written collectionview for Calendar(only UiView is there in the storyboard)]

(2.1.4) Agenda View : below that one UIView for Agenda[inside UiView there is programatically written tableview for Agenda(only UiView is there in the storyboard)]

(2.1.5) In bottom another stackview for sliding buttons [where one is calendar button, another is search button, another is email button]

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(2.2) Architecture:

• I have followed VIPER design pattern, so that each module can talk to themselves independently, via protocol delegates (MSParentScreenContracts).

• Builder : MSParentScreenBuilder.swift

• View : MSParentScreenViewController.swift, MSCalendarView.swift & MSAgendaView.swift.

• Interactor : MSParentScreenInteractor.swift

• Presenter : MSParentScreenPresenter.swift

• Entity : MSOutlookCalendarModel.swift,MSOutlookAgendaModel.swift, MSOutlookWeatherModel.swift & MSOutlookLocationModel.swift.

• Router : MSParentScreenRouter.swift

• Data - Managers : MSOutlookCalendarManager.swift & MSOutlookWeatherManager.swift.

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(2.3) Main Application Files :-

(2.3.1) MSParentScreen: [I have used MS prefix for Microsoft]

MSParentScreenView: (MSParentScreenViewController.swift)

• It contains two independent views (1) Calendar View, (2) Agenda View. Those are independent and talk to each other by protocol delegates.

• MSCalendar View: (MSCalendarView.swift)

• It contains a Collection view. For data it asks the MSParentScreenViewController who asks further MSParentScreenPresenter to provide the data.

• MSAgenda View: (MSAgendaView.swift)

• It contains a Table view. For data it asks the MSParentScreenViewController who asks further MSParentScreenPresenter to provide the data.

MSParentScreenManager: ( MSOutlookCalendarManager.swift & MSOutlookWeatherManager.swift.)

• MSOutlookCalendarManager is a data manager class for CalendarView, which contains the business logic and this logic are called from initCalendar MSOutlookCalendarManager+Extension properties, MSOutlookCalendarManager+Extensionis called from MSParentScreenInteractor.

• Currently I am loading past 12 months from current date and post 1 month from the current date. It can be altered in the code as per the requirement. code looks like

guard let previousMonthStartDate = currentCalendar.date(byAdding: .month, value: -1, to: currentDate), let startOfCalendarDate = currentCalendar.startOfMonth(forThe: previousMonthStartDate), let lastMonthDate = currentCalendar.date(byAdding: .month, value: 12, to: currentDate), let lastMonthEndDate = currentCalendar.startOfMonth(forThe: lastMonthDate) else { return nil } It's in MSOutlookCalendarManager.

• MSOutlookWeatherManager is a data manager class for WeatherView elements, which contains the logic for parsing weather JSON Object. This class updates MSOutlookWeatherModelData model objects.

MSParentScreenInteractor: (MSParentScreenInteractor.swift)

• This class MSParentScreenInteractor is the backbone of an application as it contains the business logic and the logic is managed by respective Data Managers. In detail:

• It has all the business logic which is managed by calendarManager[MSOutlookCalendarManager] & weatherManager[MSOutlookWeatherManager].

MSParentScreenPresenter: (MSParentScreenPresenter.swift)

•This class MSParentScreenPresenter has the responsibility:

• to get the data from the interactor on user actions and after getting data from the interactorMSParentScreenInteractor, it sends it to the view to show it.

• It also asks the router for navigation logic.

MSParentScreenEntity: (MSOutlookCalendarModel.swift, MSOutlookAgendaModel.swift,

MSOutlookWeatherModel.swift & MSOutlookLocationModel.swift.)

• It contains the entities, which are the basic model objects used by the Interactor.

MSParentScreenRouter: (MSParentScreenRouter.swift)

• This class MSParentScreenRouter supports navigation logic.

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(2.4) Networking :-

MSNetworking:

Only Seven days from Current day weather data are shown in the MSAgendaTableViewCell, and rest days weather are hardcoded as Clear throughout the day.

• MSNetworkingClass.swift

• This Networking class MSNetworkingClass supports networking using URl, URLSession, URLSessionDataTask, HTTPURLResponse, JSONSerialization. It supports:
• GET Request
• decodingTask -> URLSessionDataTask

• MSAPIError.swift

• This enum(value type) -> MSAPIError contains the following API error response:
• Request Failed.
• Invalid Data.
• Response Unsuccessful.
• JSON Parsing Failure.
• JSON Conversion Failure.

• MSWeatherAPIResult.swift

• This enum(value type) -> MSWeatherAPIResult contains the following API response:
• Success Result from JSON API, <T> represents Generics type.
• Failure Result from JSON API, <U> represents Error type.

• URL Used: (https://api.darksky.net/forecast/dd4e55ff06515b974993ce78b82b1695/) it's in MSAppUtility.swift.

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(2.5) Location :-

• Showing Current location in the MSAgendaTableViewCell. It will update in the location on the change of 1km locationManager.distanceFilter = 1000.0 written in AppDelegate.swift.

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(2.6) Static data set :-

• It's there in the project file AgendaEvents.json in MSParentScreenEntity folder.

(3) Highlights :

• No third party libs are used.

• View hierarchies are written by code.

• Unit testing provided, with Code coverage of 65%.

• Network Layer using URLSession to retrieve weather's data using user's device location.

Best,

Subhodip