Api.swift

//
//  Api.swift
//  Pods
//
//  Created by Mauro Bender on 13/8/16.
//
//

import Alamofire

public typealias ApiMethod = Alamofire.HTTPMethod

open class Api {
	let baseURL: URL
	let apiPath: String
	
	var apiURL: URL { return baseURL.appendingPathComponent( apiPath ) }
	
	public init( baseURL: URL, apiPath: String ) {
		self.baseURL = baseURL
		self.apiPath = apiPath
	}
	
	// RESOURCE
	open func resource( _ path: String ) -> Resource {
		return Resource( api: self, path: path )
	}
	
	// REQUESTS
	open func request( _ method: ApiMethod, path: String,
		parameters: [String: AnyObject]? = nil, encoding: ParameterEncoding = URLEncoding.default,
		headers: [String: String]? = nil, completion: @escaping (DataResponse<Any>) -> Void )
	{
		Alamofire.request( urlForPath( path ).absoluteString, method: method, parameters: parameters,
		                   encoding: encoding, headers: headers ).responseJSON( completionHandler: completion )
	}
	
	open func get( _ path: String, parameters: [String: AnyObject]? = nil, encoding: ParameterEncoding = URLEncoding.default,
	                 headers: [String: String]? = nil, completion: @escaping (DataResponse<Any>) -> Void )
	{
		return request( .get, path: path, parameters: parameters, encoding: encoding,
		                headers: headers, completion: completion)
	}
	
	open func post( _ path: String, parameters: [String: AnyObject]? = nil, encoding: ParameterEncoding = URLEncoding.default,
	                 headers: [String: String]? = nil, completion: @escaping (DataResponse<Any>) -> Void )
	{
		return request( .post, path: path, parameters: parameters, encoding: encoding,
		                headers: headers, completion: completion)
	}
	
	open func put( _ path: String, parameters: [String: AnyObject]? = nil, encoding: ParameterEncoding = URLEncoding.default,
	                  headers: [String: String]? = nil, completion: @escaping (DataResponse<Any>) -> Void )
	{
		return request( .put, path: path, parameters: parameters, encoding: encoding,
		                headers: headers, completion: completion)
	}
	
	open func patch( _ path: String, parameters: [String: AnyObject]? = nil, encoding: ParameterEncoding = URLEncoding.default,
	                  headers: [String: String]? = nil, completion: @escaping (DataResponse<Any>) -> Void )
	{
		return request( .patch, path: path, parameters: parameters, encoding: encoding,
		                headers: headers, completion: completion)
	}
	
	open func delete( _ path: String, parameters: [String: AnyObject]? = nil, encoding: ParameterEncoding = URLEncoding.default,
	                  headers: [String: String]? = nil, completion: @escaping (DataResponse<Any>) -> Void )
	{
		return request( .delete, path: path, parameters: parameters, encoding: encoding,
		                headers: headers, completion: completion)
	}
	
	func urlForPath( _ path: String ) -> URL {
		return apiURL.appendingPathComponent( path )
	}
}

// MARK: Equatable
extension Api: Equatable {}

public func ==(lhs: Api, rhs: Api) -> Bool {
	return lhs.baseURL == rhs.baseURL && lhs.apiPath == rhs.apiPath
}