You are given some interfaces, and you have to implement their functionality in the correct classes. There are 2 types of entities: Diver and Fish. There should also be a DiverRepository and FishRepository. Fish The Fish is a base class of any type of fish, and it should not be able to be instantiated. Data • Name - string o If the name is null or whitespace, throw a new ArgumentException with the following message: "Fish name should be determined." • Points - double o Represents the points a fish will bring to the diver. o Must be a value between 1 and 10, both inclusive. If not, throw a new ArgumentException with the message: "Points must be a numeric value, between 1 and 10." o This number will have at most one decimal place. This means the value can range from a whole number like 1 or 10, to a number with one digit after the decimal point, such as 1.1, 2.5, 3.7, or 9.1. • TimeToCatch – int o A numerical value representing how many seconds a diver requires to catch the fish. Override ToString() method: Overrides the existing method ToString() and modify it, so the returned string must be on a single line, in the following format: "{typeName}: {Name} [ Points: {Points}, Time to Catch: {TimeToCatch} seconds ]" Constructor A Fish should take the following values upon initialization: string name, double points, int timeToCatch Child Classes There are three concrete types of Fish: ReefFish It has TimeToCatch value of 30 seconds. The Constructor of the ReefFish should take the following parameters upon initialization: string name, double points PredatoryFish It has TimeToCatch value of 60 seconds. The Constructor of the PredatoryFish should take the following parameters upon initialization: string name, double points DeepSeaFish It has TimeToCatch value of 180 seconds. The Constructor of the DeepSeaFish should take the following parameters upon initialization: string name, double points Diver The Diver is a base class of any type of diver, and it should not be able to be instantiated. Data • Name - string o If the Name is null or whitespace, throw a new ArgumentException with the message: "Diver's name cannot be null or empty." • OxygenLevel – int o A numerical value representing the diver's oxygen level remaining, in seconds. If it drops below zero during any operation, it should be reset to zero. • Catch – IReadOnlyCollection o It will store a sequence of names of fish, caught by a specific diver. • CompetitionPoints – double o Set the initial value of the property to zero. Returns a floating-point number rounded to the first decimal place. Represents the total points accumulated by a diver, based on the type of fish caught during the competition. • HasHealthIssues – bool o The property indicates if the diver has potential health concerns. Its initial value is False, representing that the diver starts in a healthy state. Behavior void Hit(IFish fish) The Hit method signifies a diver's attempt to catch a specific fish. When invoked with an IFish object as its parameter, the method performs the following actions: • The diver's OxygenLevel is decreased by the value of the TimeToCatch property of the provided Fish. • The Name of the caught Fish is added to the diver's Catch list. • The diver's CompetitionPoints are incremented by the value of the Points property of the caught Fish. void Miss(int timeToCatch) The Miss() is an abstract method that should decrease the diver's OxygenLevel property. When the method is invoked the diver's OxygenLevel is decreased by a certain value, that will depend on the fish that is chased. OxygenLevel -= (int)Math.Round(…, MidpointRounding.AwayFromZero); void RenewOxy It should be abstract method. The diver's OxygenLevel should be fully replenished to its original or maximum value. This would mean setting the OxygenLevel back to its starting value depending on the diver’s type. void UpdateHealthStatus() This method changes the health status of the diver to True, if it is False or reciprocally. Override ToString() method: Overrides the existing method ToString() and modifies it, so the returned string must be on a single line, in the following format: "Diver [ Name: {Name}, Oxygen left: {OxygenLevel}, Fish caught: {count}, Points earned: {CompetitionPoints} ]" Constructor A Diver should take the following values upon initialization: string name, int oxygenLevel Child Classes There are two concrete types of Diver: FreeDiver It has OxygenLevel value of 120 seconds. FreeDiver will decrease the OxygenLevel property by 60% (using the Miss() method) of the TimeToCatch value of the missed fish. • If the calculated value is not a whole number, round it to the nearest whole integer. The Constructor of the FreeDiver should take the following parameters upon initialization: string name ScubaDiver It has OxygenLevel value of 540 seconds. ScubaDiver will decrease the OxygenLevel property by 30% (using the Miss() method) of the TimeToCatch value of the missed a fish. • If the calculated value is not a whole number, round it to the nearest whole integer. The Constructor of the ScubaDiver should take the following parameters upon initialization: string name DiverRepository The DiverRepository is an IRepository. Collection for the divers. Data • Models – IReadOnlyCollection o Returns a readonly collection of all divers, added to the repository. Behavior void AddModel(IDiver diver) • Adds a new IDiver to the DiverRepository. IDiver GetModel(string name) • Returns a diver with the given name from the collection, if there is any. Otherwise, returns null. FishRepository The FishRepository is an IRepository. Collection for the fish. Data • Models – IReadOnlyCollection o Returns a readonly collection of all fish, added to the repository. Behavior void AddModel(IFish fish) • Adds a new IFish to the FishRepository. IFish GetModel(string name) Returns a fish with the given name from the collection, if there is any. Otherwise, returns null.

Data You need to keep track of some things, this is why you need some private fields in your controller class: Example: • divers - DiverRepository • fish - FishRepository Commands There are several commands, which control the business logic of the application. They are stated below. DiveIntoCompetition Command Parameters • diverType – string • diverName - string Functionality The method should create and add a new IDiver to the DiverRepository. • If the given diverType is NOT presented as a valid Diver’s child class (FreeDiver, ScubaDiver), return the following message: "{diverType} is not allowed in our competition." • If a diver with the same Name is already added to the repository, do not duplicate records, return the following message: "{diverName} is already a participant -> {correctRepositoryTypeName}." • If none of the above cases is reached, the IDiver is successfully created. Store the diver to the appropriate collection and return: "{diverName} is successfully registered for the competition -> {correctRepositoryTypeName}." SwimIntoCompetition Command Parameters • fishType - string • fishName - string • points - double Functionality The method should create and add a new IFish to the FishRepository. The SwimIntoCompetition method is responsible for allowing a new fish to chase into the competition. • If the given typeName is NOT presented as a valid Fish's child class (ReefFish, DeepSeaFish, or PredatoryFish), return the following message: "{fishType} is forbidden for chasing in our competition." • If a fish with the same Name is already added to the repository, do not duplicate records, return the following message: "{fishName} is already allowed -> {correctRepositoryTypeName}." • If the above case is not reached, create the correct type of IFish and add it to the appropriate collection. Return the following message: "{fishName} is allowed for chasing." ChaseFish Command Parameters • diverName - string • fishName – string • isLucky - bool Functionality The method is responsible for allowing the specific diver to chase and attempt to catch a specific fish: • Validates if a diver with the given diverName exists in the DiverRepository. If no diver with the provided name is found, return the following message: "{correctRepositoryTypeName} has no {diverName} registered for the competition." • Validates if a fish with the given fishName exists in the FishRepository. If no fish with the provided name is found, return the following message: "{fishName} is not allowed to be caught in this competition." • HealthCheck - If the diver's HasHealthIssues property is True, the diver is not allowed to dive. Return the following message: "{diverName} will not be allowed to dive, due to health issues." • If the diver’s OxygenLevel is less than the fish's TimeToCatch value, the fish will escape, the diver will Miss with the harpoon (method Miss(int timeToCatch) should be used), and the following message should be returned: "{diverName} missed a good {fishName}." • If the diver's OxygenLevel is equal to the fish's TimeToCatch value then: o If isLucky is True, the diver successfully catches the fish by invoking the Hit method with the targeted fish. The following message is returned: "{diverName} hits a {fishPoints}pt. {fishName}." o If isLucky is False, the diver misses the fish. Invoke the Miss method with the time to catch of the targeted fish. The following message is returned: "{diverName} missed a good {fishName}." • If the diver’s OxygenLevel is more than the fish's TimeToCatch value, the fish is caught, the diver will Hit with the harpoon, and the following message should be returned: "{diverName} hits a {fishPoints}pt. {fishName}." • Please note that if, at any point during the chase, the diver's OxygenLevel drops to 0, the diver's HasHealthIssues property is set to True. HealthRecovery Command Functionality The method doesn't receive any parameters. Its main purpose is to scan through the collection of divers and identify those facing health issues: Once the method identifies a diver with the HasHealthIssues property set to True, it initiates a series of actions to stabilize the diver: • First, it sets the HasHealthIssues property of the diver to False, indicating that the diver is now in a stable condition. • Secondly, it replenishes the diver's OxygenLevel back to its maximum, ensuring the divers are ready for the next dive when they feel comfortable. • Returns the following message: "Divers recovered: {count}" DiverCatchReport Command Parameters • diverName - string Functionality Returns detailed information about a specific diver and his catch so far. To receive the correct output, use the ToString() method of each fish: "Diver [ Name: {Name}, Oxygen left: {OxygenLevel}, Fish caught: {count}, Points earned: {CompetitionPoints} ] Catch Report: {fish1} //{typeName}: {Name} [ Points: {Points}, Time to Catch: {TimeToCatch} seconds ] {fish2} … {fishn} " CompetitionStatistics Command Functionality Returns information about each diver from the DiverRepository. Arrange the divers by CompetitionPoints - descending, then by Catch.Count – descending, then by Name - alphabetically. Return only divers that are in good health condition. To receive the correct output, use the ToString() method of each diver: "Nautical-Catch-Challenge {diver1} {diver2} ... {divern}" Exit Command Functionality Ends the program.