//
//  InstanceFeatures.swift
//  Tusker
//
//  Created by Shadowfacts on 1/23/22.
//  Copyright © 2022 Shadowfacts. All rights reserved.
//

import Foundation
import Pachyderm

struct InstanceFeatures {
    private(set) var instanceType = InstanceType.mastodon
    private(set) var maxStatusChars = 500
    
    var localOnlyPosts: Bool {
        instanceType == .hometown || instanceType == .glitch
    }
    
    var mastodonAttachmentRestrictions: Bool {
        instanceType.isMastodon
    }
    
    var pollsAndAttachments: Bool {
        instanceType == .pleroma
    }
    
    var boostToOriginalAudience: Bool {
        instanceType == .pleroma
    }
    
    mutating func update(instance: Instance, nodeInfo: NodeInfo?) {
        if instance.version.contains("glitch") {
            instanceType = .glitch
        } else if nodeInfo?.software.name == "hometown" {
            instanceType = .hometown
        } else if instance.version.contains("pleroma") {
            instanceType = .pleroma
        } else {
            instanceType = .mastodon
        }
        
        maxStatusChars = instance.maxStatusCharacters ?? 500
    }
}

extension InstanceFeatures {
    enum InstanceType: Equatable {
        case mastodon // vanilla
        case pleroma
        case hometown
        case glitch
        
        var isMastodon: Bool {
            switch self {
            case .mastodon, .hometown, .glitch:
                return true
            default:
                return false
            }
        }
    }
}