dms_tailscalectl/tailscalectl/lib.js

function parsePeers(peerMap) {
    if (!peerMap) return []
    return Object.keys(peerMap).map(function (key) {
        var p = peerMap[key]
        return {
            hostname: p.HostName || key,
            ip: (p.TailscaleIPs && p.TailscaleIPs.length) ? p.TailscaleIPs[0] : "",
            online: p.Online || false,
            exitNode: p.ExitNodeOption || false
        }
    })
}

function makeExitNodeCommand(hostname) {
    return ["tailscale", "set", "--exit-node=" + hostname]
}

function findActiveExitNode(peerMap) {
    if (!peerMap) return ""
    for (const key in peerMap) {
        const p = peerMap[key]
        if (p.ExitNode) {
            return p.HostName || key
        }
    }
    return ""
}

function errorMessage(cmd) {
    var messages = {
        "up": "Failed to connect to Tailscale",
        "connect": "Failed to connect to Tailscale",
        "down": "Failed to disconnect from Tailscale",
        "disconnect": "Failed to disconnect from Tailscale",
        "set": "Failed to set exit node",
        "status": "Failed to read Tailscale status"
    }
    return messages[cmd] || "Tailscale command failed"
}

// CommonJS export for Node.js tests (ignored by QML)
if (typeof module !== "undefined" && module.exports) {
    module.exports = { parsePeers, makeExitNodeCommand, findActiveExitNode, errorMessage }
}