// DragonX Wallet - HushChat service (implementation).

#include "chat_service.h"

#include <utility>

namespace dragonx::chat {

ChatService::~ChatService() {
    clearIdentity();
}

void ChatService::setIdentity(const ChatKeyPair& keys) {
    identity_ = keys;
    has_identity_ = true;
}

void ChatService::clearIdentity() {
    wipeChatKeyPair(identity_);
    has_identity_ = false;
}

int ChatService::ingest(const std::vector<HushChatTransactionMetadata>& metadata,
                        std::int64_t txTimestamp) {
    if (!has_identity_) return 0;

    int added = 0;
    for (const auto& meta : metadata) {
        ChatMessage message;
        message.direction = ChatDirection::Incoming;
        message.txid = meta.txid;
        message.conversation_id = meta.conversation_id;
        message.peer_zaddr = meta.reply_zaddr;
        message.peer_public_key_hex = meta.sender_public_key_hex;
        message.timestamp = txTimestamp;
        message.payload_position = meta.payload_position;

        if (meta.type == HushChatHeaderType::ContactRequest) {
            message.kind = ChatMessageKind::ContactRequest;
            message.body = meta.payload_memo;  // plaintext request text
        } else {
            message.kind = ChatMessageKind::Message;
            std::string plaintext;
            const ChatCryptoStatus status = decryptIncoming(
                identity_, meta.sender_public_key_hex, meta.secretstream_header_hex,
                meta.payload_memo, plaintext);
            if (status != ChatCryptoStatus::Ok) continue;  // drop undecryptable silently
            message.body = std::move(plaintext);
        }

        if (store_.append(message)) ++added;
    }
    return added;
}

} // namespace dragonx::chat