TelegramSwift/Telegram-Mac/CachedChannelAdmins.swift at master · overtake/TelegramSwift · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
//
//  CachedChannelAdmins.swift
//  Telegram
//
//  Created by Mikhail Filimonov on 02/01/2019.
//  Copyright © 2019 Telegram. All rights reserved.
//

import Foundation
import Postbox
import TelegramCore

import SwiftSignalKit


public enum CachedChannelAdminRank: Codable, Equatable {
    case owner
    case admin
    case custom(String)

    public init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: StringCodingKey.self)

        let value: Int32 = try container.decode(Int32.self, forKey: "v")
        switch value {
        case 0:
            self = .owner
        case 1:
            self = .admin
        case 2:
            self = .custom(try container.decode(String.self, forKey: "s"))
        default:
            self = .admin
        }
    }

    public func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: StringCodingKey.self)

        switch self {
        case .owner:
            try container.encode(0 as Int32, forKey: "v")
        case .admin:
            try container.encode(1 as Int32, forKey: "v")
        case let .custom(rank):
            try container.encode(2 as Int32, forKey: "v")
            try container.encode(rank, forKey: "s")
        }
    }
}

public final class CachedChannelAdminRanks: Codable {
    private struct DictionaryKey: Codable, Hashable {
        var key: PeerId

        init(_ key: PeerId) {
            self.key = key
        }

        init(from decoder: Decoder) throws {
            let container = try decoder.container(keyedBy: StringCodingKey.self)

            self.key = PeerId(try container.decode(Int64.self, forKey: "k"))
        }

        func encode(to encoder: Encoder) throws {
            var container = encoder.container(keyedBy: StringCodingKey.self)

            try container.encode(self.key.toInt64(), forKey: "k")
        }
    }

    public let ranks: [PeerId: CachedChannelAdminRank]

    public init(ranks: [PeerId: CachedChannelAdminRank]) {
        self.ranks = ranks
    }

    public init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: StringCodingKey.self)

        let dict = try container.decode([DictionaryKey: CachedChannelAdminRank].self, forKey: "ranks")
        var mappedDict: [PeerId: CachedChannelAdminRank] = [:]
        for (key, value) in dict {
            mappedDict[key.key] = value
        }
        self.ranks = mappedDict
    }

    public func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: StringCodingKey.self)

        var mappedDict: [DictionaryKey: CachedChannelAdminRank] = [:]
        for (k, v) in self.ranks {
            mappedDict[DictionaryKey(k)] = v
        }
        try container.encode(mappedDict, forKey: "ranks")
    }

    public static func cacheKey(peerId: PeerId) -> ValueBoxKey {
        let key = ValueBoxKey(length: 8)
        key.setInt64(0, value: peerId.toInt64())
        return key
    }
}


public func cachedChannelAdminRanksEntryId(peerId: PeerId) -> ItemCacheEntryId {
    return ItemCacheEntryId(collectionId: 100, key: CachedChannelAdminRanks.cacheKey(peerId: peerId))
}

func updateCachedChannelAdminRanks(postbox: Postbox, peerId: PeerId, ranks: Dictionary<PeerId, CachedChannelAdminRank>) -> Signal<Void, NoError> {
    return postbox.transaction { transaction -> Void in
        if let entry = CodableEntry(CachedChannelAdminRanks(ranks: ranks)) {
            transaction.putItemCacheEntry(id: ItemCacheEntryId(collectionId: 100, key: CachedChannelAdminRanks.cacheKey(peerId: peerId)), entry: entry)
        }
    }
}