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| import Foundation
public class Slack {
public var name: String = "Send message to Slack"
public var isEnabled = true
private var message: Message?
public init(_ closure: (Slack) -> Void = { _ in }) {
closure(self)
}
}
public extension Slack {
struct Message {
let token: String
let channel: String
let text: String
let username: String?
public init(
token: String,
channel: String,
text: String,
username: String
) {
self.token = token
self.channel = channel
self.text = text
self.username = username
}
}
func post(message: Message) {
self.message = message
}
}
extension Slack: Task {
public func run(workflow: Workflow, completion: @escaping TaskCompletion) {
guard let message = message else {
completion(.failure(PumaError.invalid))
return
}
let sender = MessageSender()
sender.send(message: message, completion: { result in
switch result {
case .success:
Deps.console.success("Message posted successfully")
case .failure(let error):
Deps.console.error("Failed: \(error.localizedDescription)")
}
completion(result)
})
}
}
private class MessageSender {
struct Response: Decodable {
let ok: Bool
let error: String?
}
func send(message: Slack.Message, completion: @escaping (Result<(), Error>) -> Void) {
guard let baseUrl = URL(string: "https://slack.com/api/chat.postMessage") else {
completion(.failure(PumaError.invalid))
return
}
var components = URLComponents(url: baseUrl, resolvingAgainstBaseURL: false)
components?.queryItems = [
URLQueryItem(name: "token", value: message.token),
URLQueryItem(name: "channel", value: message.channel),
URLQueryItem(name: "text", value: message.text),
URLQueryItem(name: "pretty", value: "1")
]
if let username = message.username {
components?.queryItems?.append(
URLQueryItem(name: "username", value: username)
)
}
guard let requestUrl = components?.url else {
completion(.failure(PumaError.invalid))
return
}
var request = URLRequest(url: requestUrl)
request.allHTTPHeaderFields = [
"Accept": "application/json"
]
let task = URLSession.shared.dataTask(with: request, completionHandler: { data, response, error in
guard let data = data else {
completion(.failure(error ?? PumaError.invalid))
return
}
do {
let response = try JSONDecoder().decode(Response.self, from: data)
if response.ok {
completion(.success(()))
} else {
completion(.failure(PumaError.from(string: response.error)))
}
} catch {
completion(.failure(error))
}
})
task.resume()
}
}
|