#pragma once

#include <cstdint>

namespace im {

// Client / Server 共用的协议常量。编解码、JSON、网络实现仍各放各工程。

enum class Type : uint16_t {
    System   = 1,  // 心跳、被踢等
    Account  = 2,  // 登录/注册/密码/隐私
    Friend   = 3,  // 好友
    Message  = 4,  // 会话与聊天
    Sticker  = 5,  // 表情包
    Favorite = 6,  // 收藏夹
    Group    = 7,  // 群聊
};

enum class Cmd : uint16_t {
    Heartbeat            = 1,
    Login                = 2,
    Logout               = 3,
    Chat                 = 4,
    Register             = 5,
    SendCode             = 6,
    ResetPassword        = 7,
    ChangePassword       = 8,
    FriendList           = 9,
    ConvList             = 10,
    MsgHistory           = 11,
    AddFriend            = 12,
    SetConfig            = 13,
    SearchUser           = 14,
    FriendRequestList    = 15,
    HandleFriendRequest  = 16,
    GetPrivacy           = 17,
    SetPrivacy           = 18,
    StickerPackList      = 19,
    StickerPack          = 20,
    GetSticker           = 21,
    DeleteConv           = 22,
    SetUnread            = 23,
    DeleteFriend         = 24,
    SetRemark            = 25,
    GetProfile           = 26,
    SetProfile           = 27,
    GetAvatar            = 28,
    PutFile              = 29,
    GetFile              = 30,
    FavoriteAdd          = 31,
    FavoriteList         = 32,
    FavoriteGet          = 33,
    FavoriteUpdate       = 34,
    FavoriteDelete       = 35,
    DeleteMsg            = 36,
    GroupCreate          = 37,
    GroupInfo            = 38,
    GroupMembers         = 39,
    GroupUpdate          = 40,
    GroupInvite          = 41,
    GroupSearch          = 42,
    GroupJoin            = 43,
    GroupLeave           = 44,
    GroupDismiss         = 45,
    GroupKick            = 46,
    GroupSetAdmin        = 47,
    GroupTransfer        = 48,
    GroupRequestList     = 49,
    GroupHandleRequest   = 50,
    GroupList            = 51,
    ChatNotify           = 100,
    Kicked               = 101,
    FriendRequestNotify  = 102,
    FriendAcceptedNotify = 103,
    PresenceNotify       = 104,
    GroupRequestNotify   = 105,
    GroupChangeNotify    = 106,
};

namespace Err {
constexpr int Ok          = 0;
constexpr int BadParam    = 1;
constexpr int NotLogin    = 2;
constexpr int AuthFail    = 3;
constexpr int NotFound    = 4;
constexpr int Exists      = 5;
constexpr int PhoneExists = 6;
constexpr int BadSms      = 7;
constexpr int WeakPass    = 8;
constexpr int Forbidden   = 9;
constexpr int DbError     = 10;
constexpr int BadAccount  = 11;
constexpr int RateLimit   = 12;
constexpr int Disabled    = 13;
}  // namespace Err

namespace MsgType {
constexpr int Text    = 1;
constexpr int Sticker = 2;
constexpr int File    = 3;
constexpr int Card    = 4;
constexpr int Sys     = 5;
}

namespace FavKind {
constexpr int Text  = 1;
constexpr int Image = 2;
constexpr int File  = 3;
constexpr int Card  = 4;
constexpr int Note  = 5;
}

namespace FriendRel {
constexpr int None     = 0;  // 非好友
constexpr int Pending  = 1;  // 已发出申请，待对方同意
constexpr int Friend   = 2;  // 已是好友
constexpr int Incoming = 3;  // 对方已申请加我
}

namespace ConvType {
constexpr int Direct = 0;
constexpr int Group  = 1;
}

namespace GroupRole {
constexpr int Member = 0;
constexpr int Admin  = 1;
constexpr int Owner  = 2;
}

namespace JoinMode {
constexpr int Open    = 0;  // 无需审核
constexpr int Approve = 1;  // 群主或管理员审核
constexpr int Closed  = 2;  // 外人不可申请
}

constexpr uint32_t kHeaderSize = 12;
constexpr int64_t kFileHelperUid = 1;

inline const char* type_name(uint16_t type)
{
    switch (static_cast<Type>(type)) {
    case Type::System:   return "System";
    case Type::Account:  return "Account";
    case Type::Friend:   return "Friend";
    case Type::Message:  return "Message";
    case Type::Sticker:  return "Sticker";
    case Type::Favorite: return "Favorite";
    case Type::Group:    return "Group";
    }
    return "?";
}

inline const char* cmd_name(uint16_t cmd)
{
    switch (static_cast<Cmd>(cmd)) {
    case Cmd::Heartbeat:            return "Heartbeat";
    case Cmd::Login:                return "Login";
    case Cmd::Logout:               return "Logout";
    case Cmd::Chat:                 return "Chat";
    case Cmd::Register:             return "Register";
    case Cmd::SendCode:             return "SendCode";
    case Cmd::ResetPassword:        return "ResetPassword";
    case Cmd::ChangePassword:       return "ChangePassword";
    case Cmd::FriendList:           return "FriendList";
    case Cmd::ConvList:             return "ConvList";
    case Cmd::MsgHistory:           return "MsgHistory";
    case Cmd::AddFriend:            return "AddFriend";
    case Cmd::SetConfig:            return "SetConfig";
    case Cmd::SearchUser:           return "SearchUser";
    case Cmd::FriendRequestList:    return "FriendRequestList";
    case Cmd::HandleFriendRequest:  return "HandleFriendRequest";
    case Cmd::GetPrivacy:           return "GetPrivacy";
    case Cmd::SetPrivacy:           return "SetPrivacy";
    case Cmd::StickerPackList:      return "StickerPackList";
    case Cmd::StickerPack:          return "StickerPack";
    case Cmd::GetSticker:           return "GetSticker";
    case Cmd::DeleteConv:           return "DeleteConv";
    case Cmd::SetUnread:            return "SetUnread";
    case Cmd::DeleteFriend:         return "DeleteFriend";
    case Cmd::SetRemark:            return "SetRemark";
    case Cmd::GetProfile:           return "GetProfile";
    case Cmd::SetProfile:           return "SetProfile";
    case Cmd::GetAvatar:            return "GetAvatar";
    case Cmd::PutFile:              return "PutFile";
    case Cmd::GetFile:              return "GetFile";
    case Cmd::FavoriteAdd:          return "FavoriteAdd";
    case Cmd::FavoriteList:         return "FavoriteList";
    case Cmd::FavoriteGet:          return "FavoriteGet";
    case Cmd::FavoriteUpdate:       return "FavoriteUpdate";
    case Cmd::FavoriteDelete:       return "FavoriteDelete";
    case Cmd::DeleteMsg:            return "DeleteMsg";
    case Cmd::GroupCreate:          return "GroupCreate";
    case Cmd::GroupInfo:            return "GroupInfo";
    case Cmd::GroupMembers:         return "GroupMembers";
    case Cmd::GroupUpdate:          return "GroupUpdate";
    case Cmd::GroupInvite:          return "GroupInvite";
    case Cmd::GroupSearch:          return "GroupSearch";
    case Cmd::GroupJoin:            return "GroupJoin";
    case Cmd::GroupLeave:           return "GroupLeave";
    case Cmd::GroupDismiss:         return "GroupDismiss";
    case Cmd::GroupKick:            return "GroupKick";
    case Cmd::GroupSetAdmin:        return "GroupSetAdmin";
    case Cmd::GroupTransfer:        return "GroupTransfer";
    case Cmd::GroupRequestList:     return "GroupRequestList";
    case Cmd::GroupHandleRequest:   return "GroupHandleRequest";
    case Cmd::GroupList:            return "GroupList";
    case Cmd::ChatNotify:           return "ChatNotify";
    case Cmd::Kicked:               return "Kicked";
    case Cmd::FriendRequestNotify:  return "FriendRequestNotify";
    case Cmd::FriendAcceptedNotify: return "FriendAcceptedNotify";
    case Cmd::PresenceNotify:       return "PresenceNotify";
    case Cmd::GroupRequestNotify:   return "GroupRequestNotify";
    case Cmd::GroupChangeNotify:    return "GroupChangeNotify";
    }
    return "?";
}

}  // namespace im