//
//  Status.swift
//  Pachyderm
//
//  Created by Shadowfacts on 9/9/18.
//  Copyright © 2018 Shadowfacts. All rights reserved.
//

import Foundation

public class Status: Decodable, ClientModel {
    var client: Client! {
        didSet {
            didSetClient()
        }
    }
    // when reblog.client is set directly from self.client didSet, reblog.client didSet is never called
    private func didSetClient() {
        account.client = client
        reblog?.client = client
        emojis.client = client
        attachments.client = client
        mentions.client = client
        hashtags.client = client
        application?.client = client
    }
    
    public let id: String
    public let uri: String
    public let url: URL?
    public let account: Account
    public let inReplyToID: String?
    public let inReplyToAccountID: String?
    public private(set) var reblog: Status?
    public let content: String
    public let createdAt: Date
    public private(set) var emojis: [Emoji]
    // TODO: missing from pleroma
//    public let repliesCount: Int
    public let reblogsCount: Int
    public let favouritesCount: Int
    public var reblogged: Bool?
    public var favourited: Bool?
    public var muted: Bool?
    public let sensitive: Bool
    public let spoilerText: String
    public let visibility: Visibility
    public private(set) var attachments: [Attachment]
    public private(set) var mentions: [Mention]
    public private(set) var hashtags: [Hashtag]
    public private(set) var application: Application?
    public let language: String?
    public var pinned: Bool?
    
    public func getContext(completion: @escaping Client.Callback<ConversationContext>) {
        let request = Request<ConversationContext>(method: .get, path: "/api/v1/statuses/\(id)/context")
        client.run(request, completion: completion)
    }
    
    public func getCard(completion: @escaping Client.Callback<Card>) {
        let request = Request<Card>(method: .get, path: "/api/v1/statuses/\(id)/card")
        client.run(request, completion: completion)
    }
    
    public func getFavourites(range: RequestRange = .default, completion: @escaping Client.Callback<[Account]>) {
        var request = Request<[Account]>(method: .get, path: "/api/v1/statuses/\(id)/favourited_by")
        request.range = range
        client.run(request, completion: completion)
    }
    
    public func getReblogs(range: RequestRange = .default, completion: @escaping Client.Callback<[Account]>) {
        var request = Request<[Account]>(method: .get, path: "/api/v1/statuses/\(id)/reblogged_by")
        request.range = range
        client.run(request, completion: completion)
    }
    
    public func delete(completion: @escaping Client.Callback<Empty>) {
        let request = Request<Empty>(method: .delete, path: "/api/v1/statuses/\(id)")
        client.run(request, completion: completion)
    }
    
    public func reblog(completion: @escaping Client.Callback<Status>) {
        let oldValue = reblogged
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/reblog")
        client.run(request) { response in
            if case .success = response {
                self.reblogged = true
            } else {
                self.reblogged = oldValue
            }
            completion(response)
        }
    }
    
    public func unreblog(completion: @escaping Client.Callback<Status>) {
        let oldValue = reblogged
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/unreblog")
        client.run(request) { response in
            if case .success = response {
                self.reblogged = false
            } else {
                self.reblogged = oldValue
            }
            completion(response)
        }
    }
    
    public func favourite(completion: @escaping Client.Callback<Status>) {
        let oldValue = favourited
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/favourite")
        client.run(request) { response in
            if case .success = response {
                self.favourited = true
            } else {
                self.favourited = oldValue
            }
            completion(response)
        }
    }
    
    public func unfavourite(completion: @escaping Client.Callback<Status>) {
        let oldValue = favourited
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/unfavourite")
        client.run(request) { response in
            if case .success = response {
                self.favourited = false
            } else {
                self.favourited = oldValue
            }
            completion(response)
        }
    }
    
    public func pin(completion: @escaping Client.Callback<Status>) {
        let oldValue = pinned
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/pin")
        client.run(request) { response in
            if case .success = response {
                self.pinned = true
            } else {
                self.pinned = oldValue
            }
            completion(response)
        }
    }
    
    public func unpin(completion: @escaping Client.Callback<Status>) {
        let oldValue = pinned
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/unpin")
        client.run(request) { response in
            if case .success = response {
                self.pinned = false
            } else {
                self.pinned = oldValue
            }
            completion(response)
        }
    }
    
    public func muteConversation(completion: @escaping Client.Callback<Status>) {
        let oldValue = muted
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/mute")
        client.run(request) { response in
            if case .success = response {
                self.muted = true
            } else {
                self.muted = oldValue
            }
            completion(response)
        }
    }
    
    public func unmuteConversation(completion: @escaping Client.Callback<Status>) {
        let oldValue = muted
        let request = Request<Status>(method: .post, path: "/api/v1/statuses/\(id)/unmute")
        client.run(request) { response in
            if case .success = response {
                self.muted = false
            } else {
                self.muted = oldValue
            }
            completion(response)
        }
    }
    
    private enum CodingKeys: String, CodingKey {
        case id
        case uri
        case url
        case account
        case inReplyToID = "in_reply_to_id"
        case inReplyToAccountID = "in_reply_to_account_id"
        case reblog
        case content
        case createdAt = "created_at"
        case emojis
//        case repliesCount = "replies_count"
        case reblogsCount = "reblogs_count"
        case favouritesCount = "favourites_count"
        case reblogged
        case favourited
        case muted
        case sensitive
        case spoilerText = "spoiler_text"
        case visibility
        case attachments = "media_attachments"
        case mentions
        case hashtags = "tags"
        case application
        case language
        case pinned
    }
}

extension Status {
    public enum Visibility: String, Codable, CaseIterable {
        case `public`
        case unlisted
        case `private`
        case direct
    }
}