Blind relays

// Set config path before importing SDK - the SDK loads config during initialization
// This example uses a config file that defines blind relay public keys for improved P2P connectivity
// Blind relays help establish connections through NAT/firewalls by acting as intermediaries
const configDir = import.meta.dirname ?? process.cwd();
process.env["QVAC_CONFIG_PATH"] =
    `${configDir}/config/blind-relay/blind-relay.config.js`;
import { downloadAsset, close, LLAMA_3_2_1B_INST_Q4_0, loadModel, getModelInfo, unloadModel, } from "@qvac/sdk";
console.log(`🚀 Download with Blind Relays Example`);
console.log(`${"=".repeat(60)}\n`);
try {
    // Config is loaded from examples/config/qvac.config.json (set via QVAC_CONFIG_PATH above)
    // The config contains swarmRelays - an array of Hyperswarm relay public keys
    // These relays help with NAT traversal and firewall bypassing for P2P downloads
    console.log(`📥 Starting model download from Hyperdrive...\n`);
    const startTime = Date.now();
    const modelId = await loadModel({
        modelSrc: LLAMA_3_2_1B_INST_Q4_0,
        modelType: "llm",
    });
    console.log(`Model loaded with ID: ${modelId}`);
    const firstStatus = await getModelInfo(LLAMA_3_2_1B_INST_Q4_0);
    console.log(`First status: ${JSON.stringify(firstStatus)}`);
    await unloadModel({ modelId });
    // Download model with progress tracking
    await downloadAsset({
        assetSrc: LLAMA_3_2_1B_INST_Q4_0,
        onProgress: (progress) => {
            const downloadedMB = (progress.downloaded / 1024 / 1024).toFixed(2);
            const totalMB = (progress.total / 1024 / 1024).toFixed(2);
            const percentage = progress.percentage.toFixed(1);
            const elapsedSeconds = (Date.now() - startTime) / 1000;
            const speedMBps = (progress.downloaded /
                1024 /
                1024 /
                elapsedSeconds).toFixed(2);
            console.log(`📊 ${percentage}% - ${downloadedMB}MB / ${totalMB}MB (${speedMBps} MB/s)`);
        },
    });
    console.log(`\n✅ Model downloaded successfully using blind relays!`);
    console.log(`Blind relays helped establish peer connections through NAT/firewalls\n`);
    await close();
}
catch (error) {
    console.error("❌ Error:", error);
    console.log(`\nIf download failed, check the relay public keys in:`);
    console.log(`   examples/config/qvac.config.json`);
    console.log(`   (Mock keys in this example won't work in practice!)`);
    process.exit(1);
}