[
  {
    "id": "f68df1c4d2e4e1a9",
    "type": "tab",
    "label": "ALS Inspector",
    "disabled": false,
    "info": "Dashboard para analizar archivos Ableton Live (.als)"
  },
  {
    "id": "c1ef7251baee3fe8",
    "type": "ui_tab",
    "name": "Ableton ALS",
    "icon": "dashboard",
    "disabled": false,
    "hidden": false
  },
  {
    "id": "2997d0427c0f3a34",
    "type": "ui_group",
    "name": "Carga",
    "tab": "c1ef7251baee3fe8",
    "order": 1,
    "disp": true,
    "width": "12",
    "collapse": false,
    "className": ""
  },
  {
    "id": "f93a3673d299cf3c",
    "type": "ui_group",
    "name": "Resumen",
    "tab": "c1ef7251baee3fe8",
    "order": 2,
    "disp": true,
    "width": "12",
    "collapse": false,
    "className": ""
  },
  {
    "id": "9eae4d30c9181132",
    "type": "ui_template",
    "z": "f68df1c4d2e4e1a9",
    "group": "2997d0427c0f3a34",
    "name": "Subir ALS",
    "order": 0,
    "width": "12",
    "height": "7",
    "format": "<md-card class=\"als-upload-card\">\n  <md-card-title>\n    <span class=\"md-headline\">Inspector de proyectos ALS</span>\n  </md-card-title>\n  <md-card-content>\n    <p>Selecciona un archivo <code>.als</code>. Se enviar\u00e1 al endpoint <code>/als/upload</code> y, si es nuevo, se almacenar\u00e1 en la biblioteca.</p>\n    <input type=\"file\" accept=\".als\" id=\"als-input-{{$id}}\" style=\"margin-top:12px\" />\n    <p class=\"md-caption\" ng-if=\"statusText\">{{statusText}}</p>\n  </md-card-content>\n</md-card>\n<script>\n(function(scope) {\n  const inputId = 'als-input-' + scope.$id;\n  function setStatus(text) {\n    scope.$applyAsync(function() { scope.statusText = text; });\n  }\n  function uploadFile(file) {\n    if (!file) { return; }\n    setStatus('Subiendo ' + file.name + '...');\n    const reader = new FileReader();\n    reader.onload = function(evt) {\n      setStatus('Analizando ' + file.name + '...');\n      fetch('/als/upload', {\n        method: 'POST',\n        headers: { 'Content-Type': 'application/json' },\n        body: JSON.stringify({ filename: file.name, size: file.size, data: evt.target.result })\n      })\n      .then(async (res) => {\n        const text = await res.text();\n        let payload = null;\n        try { payload = text ? JSON.parse(text) : {}; } catch (err) {}\n        if (!res.ok) {\n          throw new Error(payload && payload.error ? payload.error : ('HTTP ' + res.status));\n        }\n        setStatus('An\u00e1lisis guardado para ' + (payload.projectName || file.name));\n        const inputEl = document.getElementById(inputId);\n        if (inputEl) { inputEl.value = null; }\n        return payload;\n      })\n      .catch((err) => {\n        console.error('ALS upload error', err);\n        setStatus('Error: ' + (err.message || 'del servidor'));\n      });\n    };\n    reader.onerror = function(e) {\n      console.error('No se pudo leer el archivo ALS', e);\n      setStatus('No se pudo leer el archivo.');\n    };\n    reader.readAsDataURL(file);\n  }\n  function bindInput() {\n    const input = document.getElementById(inputId);\n    if (!input) { return; }\n    input.addEventListener('change', function(evt) {\n      uploadFile(evt.target.files[0]);\n    });\n  }\n  setTimeout(bindInput, 0);\n})(scope);\n</script>",
    "storeOutMessages": false,
    "fwdInMessages": false,
    "resendOnRefresh": true,
    "templateScope": "local",
    "className": "",
    "x": 230,
    "y": 100,
    "wires": []
  },
  {
    "id": "f9c6054bed66e56e",
    "type": "ui_template",
    "z": "f68df1c4d2e4e1a9",
    "group": "f93a3673d299cf3c",
    "name": "Resumen ALS",
    "order": 0,
    "width": "12",
    "height": "14",
    "format": "<md-card class=\"als-summary-card\">\n  <md-card-title>\n    <span class=\"md-headline\">Resumen del proyecto</span>\n  </md-card-title>\n  <md-card-content ng-if=\"msg.payload\">\n    <div class=\"summary-grid\">\n      <div class=\"stat\">\n        <div class=\"label\">Proyecto</div>\n        <div class=\"value\">{{msg.payload.projectName}}</div>\n      </div>\n      <div class=\"stat\">\n        <div class=\"label\">Tempo</div>\n        <div class=\"value\">{{msg.payload.liveSet.tempo || 'N/D'}} BPM</div>\n      </div>\n      <div class=\"stat\">\n        <div class=\"label\">Duraci\u00f3n aprox.</div>\n        <div class=\"value\">{{msg.payload.liveSet.durationHuman || 'N/D'}}</div>\n      </div>\n      <div class=\"stat\">\n        <div class=\"label\">Escenas</div>\n        <div class=\"value\">{{msg.payload.stats.scenes}}</div>\n      </div>\n      <div class=\"stat\">\n        <div class=\"label\">Samples</div>\n        <div class=\"value\">{{msg.payload.samples.total}}</div>\n      </div>\n      <div class=\"stat\">\n        <div class=\"label\">Dispositivos</div>\n        <div class=\"value\">{{msg.payload.stats.devices}}</div>\n      </div>\n      <div class=\"stat\">\n        <div class=\"label\">Hash</div>\n        <div class=\"value\">{{msg.payload.hash | limitTo:12}}\u2026</div>\n      </div>\n      <div class=\"stat\">\n        <div class=\"label\">Guardado</div>\n        <div class=\"value\">{{msg.payload.storedAt | date:'medium'}}</div>\n      </div>\n    </div>\n    <div class=\"meta-block\">\n      <p><strong>Versi\u00f3n:</strong> {{msg.payload.meta.creator || 'Desconocido'}} {{msg.payload.meta.version}}</p>\n      <p><strong>Archivo:</strong> {{msg.payload.meta.fileName || '\u2014'}} \u00b7 {{msg.payload.meta.sizeHuman}}</p>\n    </div>\n    <h4>Tracks ({{msg.payload.stats.totalTracks}})</h4>\n    <div class=\"track-list\" ng-if=\"msg.payload.tracks.length\">\n      <div class=\"track\" ng-repeat=\"track in msg.payload.tracks\">\n        <div class=\"track-name\">{{track.name || '(sin nombre)'}} </div>\n        <div class=\"track-meta\">{{track.type}} \u00b7 {{track.deviceCount}} dispositivos</div>\n      </div>\n    </div>\n    <h4 ng-if=\"msg.payload.liveSet.scenes.length\">Escenas</h4>\n    <md-list ng-if=\"msg.payload.liveSet.scenes.length\">\n      <md-list-item ng-repeat=\"scene in msg.payload.liveSet.scenes\">\n        <p>{{scene || '(sin nombre)'}} </p>\n      </md-list-item>\n    </md-list>\n    <h4 ng-if=\"msg.payload.samples.relative.length\">Muestras referenciadas</h4>\n    <md-list ng-if=\"msg.payload.samples.relative.length\">\n      <md-list-item ng-repeat=\"path in msg.payload.samples.relative\">\n        <p>{{path}}</p>\n      </md-list-item>\n    </md-list>\n  </md-card-content>\n  <md-card-content ng-if=\"!msg.payload && !msg.error\">\n    <p>Sube un archivo <code>.als</code> para ver el an\u00e1lisis y guardarlo.</p>\n  </md-card-content>\n  <md-card-content ng-if=\"msg.error\">\n    <p class=\"md-warn\">{{msg.error}}</p>\n  </md-card-content>\n</md-card>\n<style>\n  .als-summary-card h4 { margin-top: 16px; }\n  .summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }\n  .summary-grid .stat { background: rgba(0,0,0,0.05); padding: 8px 12px; border-radius: 6px; }\n  .summary-grid .label { font-size: 0.8em; text-transform: uppercase; color: #666; }\n  .summary-grid .value { font-size: 1.1em; font-weight: 600; }\n  .meta-block { margin-top: 12px; }\n  .track-list .track { padding: 6px 0; border-bottom: 1px solid rgba(0,0,0,0.08); }\n  .track-name { font-weight: 600; }\n  .track-meta { font-size: 0.85em; color: #555; }\n</style>",
    "storeOutMessages": false,
    "fwdInMessages": false,
    "resendOnRefresh": true,
    "templateScope": "local",
    "className": "",
    "x": 1240,
    "y": 320,
    "wires": []
  },
  {
    "id": "7d93f766ed4124fd",
    "type": "http in",
    "z": "f68df1c4d2e4e1a9",
    "name": "POST /als/upload",
    "url": "/als/upload",
    "method": "post",
    "upload": false,
    "swaggerDoc": "",
    "x": 180,
    "y": 320,
    "wires": [
      [
        "5df1cfb22fbc2a0c"
      ]
    ]
  },
  {
    "id": "5df1cfb22fbc2a0c",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "JSON base64 \u2192 Buffer",
    "func": "const body = msg.payload;\nif (!body || typeof body.data !== 'string') {\n    msg.error = 'No se recibi\u00f3 el archivo en el formato esperado.';\n    msg.statusCode = 400;\n    msg.analysis = null;\n    return [null, msg];\n}\nconst commaIndex = body.data.indexOf(',');\nconst base64 = commaIndex > -1 ? body.data.slice(commaIndex + 1) : body.data;\ntry {\n    const buffer = Buffer.from(base64, 'base64');\n    msg.payload = buffer;\n    msg.originalBuffer = buffer;\n    msg.filename = body.filename || 'upload.als';\n    msg.size = body.size || buffer.length;\n    msg.statusText = 'Archivo recibido (' + Math.round(buffer.length / 1024) + ' KB)';\n    return [msg, null];\n} catch (err) {\n    node.error('No se pudo decodificar el archivo ALS', err);\n    msg.error = 'No se pudo decodificar el archivo ALS.';\n    msg.statusCode = 400;\n    msg.analysis = null;\n    return [null, msg];\n}",
    "outputs": 2,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 460,
    "y": 320,
    "wires": [
      [
        "84ef635c6b70bb7c"
      ],
      [
        "4bcaddf8a5c2b6c9"
      ]
    ]
  },
  {
    "id": "84ef635c6b70bb7c",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "Inspector ALS",
    "func": "function toArray(value) {\n    if (!value) { return []; }\n    return Array.isArray(value) ? value : [value];\n}\nfunction readName(entity) {\n    if (!entity || !entity.Name) { return ''; }\n    const name = entity.Name;\n    if (name.EffectiveName && name.EffectiveName.Value) { return name.EffectiveName.Value; }\n    if (name.UserName && name.UserName.Value) { return name.UserName.Value; }\n    if (name.Value) { return name.Value; }\n    return '';\n}\nfunction countDevices(node) {\n    if (!node || typeof node !== 'object') { return 0; }\n    let total = 0;\n    Object.values(node).forEach((value) => {\n        if (!value) { return; }\n        if (Array.isArray(value)) {\n            total += value.length;\n        } else if (typeof value === 'object') {\n            total += 1;\n        }\n    });\n    return total;\n}\nfunction humanFileSize(bytes) {\n    if (!bytes && bytes !== 0) { return 'N/D'; }\n    if (bytes < 1024) { return bytes + ' B'; }\n    const units = ['KB', 'MB', 'GB', 'TB'];\n    let value = bytes / 1024;\n    let unit = units[0];\n    for (let i = 0; i < units.length; i += 1) {\n        unit = units[i];\n        if (value < 1024 || i === units.length - 1) { break; }\n        value /= 1024;\n    }\n    return value.toFixed(1) + ' ' + unit;\n}\nfunction secondsToHuman(seconds) {\n    if (!seconds && seconds !== 0) { return null; }\n    const total = Math.round(seconds);\n    const mins = Math.floor(total / 60);\n    const secs = String(total % 60).padStart(2, '0');\n    return mins + ':' + secs;\n}\nfunction handlePathField(field, bucket) {\n    if (!field) { return; }\n    if (typeof field === 'string') {\n        bucket.add(field);\n    } else if (Array.isArray(field)) {\n        field.forEach((item) => handlePathField(item, bucket));\n    } else if (typeof field === 'object' && field.Value) {\n        bucket.add(field.Value);\n    }\n}\nfunction collectRefs(node, bag) {\n    if (!node || typeof node !== 'object') { return; }\n    handlePathField(node.RelativePath, bag.relative);\n    handlePathField(node.Path, bag.absolute);\n    Object.values(node).forEach((value) => {\n        if (Array.isArray(value)) {\n            value.forEach((item) => collectRefs(item, bag));\n        } else if (value && typeof value === 'object') {\n            collectRefs(value, bag);\n        }\n    });\n}\nif (!Buffer.isBuffer(msg.payload)) {\n    msg.error = 'No se recibi\u00f3 un Buffer con el ALS.';\n    msg.analysis = null;\n    msg.statusCode = 400;\n    return msg;\n}\nconst originalSize = msg.size || msg.payload.length;\nlet xmlBuffer;\ntry {\n    xmlBuffer = zlib.gunzipSync(msg.payload);\n} catch (err) {\n    msg.error = 'El archivo no parece ser un ALS v\u00e1lido (fall\u00f3 la descompresi\u00f3n).';\n    msg.analysis = null;\n    msg.statusCode = 400;\n    node.error(err, msg);\n    return msg;\n}\nlet doc;\ntry {\n    const ParserClass = fastXmlParser.XMLParser || fastXmlParser;\n    const parser = new ParserClass({\n        ignoreAttributes: false,\n        attributeNamePrefix: '',\n        parseAttributeValue: false,\n        allowBooleanAttributes: true\n    });\n    doc = parser.parse(xmlBuffer.toString('utf8'));\n} catch (err) {\n    msg.error = 'No se pudo parsear el XML del proyecto.';\n    msg.analysis = null;\n    msg.statusCode = 400;\n    node.error(err, msg);\n    return msg;\n}\nconst ableton = doc?.Ableton || {};\nconst liveSet = ableton.LiveSet || {};\nconst projectName = readName(liveSet) || msg.filename || 'Proyecto sin nombre';\nconst tempoValue = liveSet?.MainTrack?.DeviceChain?.Mixer?.Tempo?.Manual?.Value\n    ?? liveSet?.DeviceChain?.Mixer?.Tempo?.Manual?.Value\n    ?? null;\nconst tempo = tempoValue ? Number(tempoValue) : null;\nconst loopLengthBeats = Number(liveSet?.Transport?.LoopLength?.Value) || null;\nconst durationSeconds = tempo && loopLengthBeats ? (loopLengthBeats * 60) / tempo : null;\nconst trackBuckets = [\n    { key: 'AudioTrack', label: 'Audio', stat: 'audio' },\n    { key: 'MidiTrack', label: 'MIDI', stat: 'midi' },\n    { key: 'GroupTrack', label: 'Grupo', stat: 'group' }\n];\nconst stats = { audio: 0, midi: 0, group: 0, devices: 0 };\nconst tracks = [];\nconst trackNode = liveSet?.Tracks || {};\ntrackBuckets.forEach((bucket) => {\n    toArray(trackNode[bucket.key]).forEach((track) => {\n        stats[bucket.stat] += 1;\n        const deviceCount = countDevices(track?.DeviceChain?.DeviceChain?.Devices);\n        stats.devices += deviceCount;\n        tracks.push({\n            name: readName(track) || bucket.label + ' ' + stats[bucket.stat],\n            type: bucket.label,\n            deviceCount,\n            color: track?.Color?.Value || null\n        });\n    });\n});\nconst scenes = toArray(liveSet?.Scenes?.Scene)\n    .map((scene) => readName(scene))\n    .filter((name) => name !== '');\nconst sampleRefs = { relative: new Set(), absolute: new Set() };\ncollectRefs(liveSet, sampleRefs);\nconst sampleSummary = {\n    total: sampleRefs.relative.size || sampleRefs.absolute.size,\n    relative: Array.from(sampleRefs.relative).slice(0, 15),\n    absolute: Array.from(sampleRefs.absolute).slice(0, 10)\n};\nconst hash = crypto.createHash('md5').update(msg.payload).digest('hex');\nmsg.analysis = {\n    hash,\n    projectName,\n    meta: {\n        creator: ableton.Creator || null,\n        version: [ableton.MajorVersion, ableton.MinorVersion].filter(Boolean).join('.'),\n        revision: ableton.Revision || null,\n        fileName: msg.filename || null,\n        sizeBytes: originalSize,\n        sizeHuman: humanFileSize(originalSize)\n    },\n    liveSet: {\n        tempo,\n        loopLengthBeats,\n        durationSeconds,\n        durationHuman: secondsToHuman(durationSeconds),\n        loopStart: Number(liveSet?.Transport?.LoopStart?.Value) || 0,\n        scenes\n    },\n    tracks,\n    stats: {\n        audio: stats.audio,\n        midi: stats.midi,\n        group: stats.group,\n        totalTracks: tracks.length,\n        devices: stats.devices,\n        scenes: scenes.length,\n        samples: sampleSummary.total\n    },\n    samples: sampleSummary\n};\nmsg.error = null;\nmsg.statusCode = 200;\nmsg.statusText = 'An\u00e1lisis generado';\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [
      {
        "var": "fastXmlParser",
        "module": "fast-xml-parser"
      },
      {
        "var": "zlib",
        "module": "zlib"
      },
      {
        "var": "crypto",
        "module": "crypto"
      }
    ],
    "x": 750,
    "y": 300,
    "wires": [
      [
        "b0b4475c1cd1a2f1"
      ]
    ]
  },
  {
    "id": "b0b4475c1cd1a2f1",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "Registrar ALS",
    "func": "const DB_PATH = '/data/als-library.json';\nconst LIB_DIR = '/data/library';\nfunction readLibrary() {\n    try {\n        const raw = fs.readFileSync(DB_PATH, 'utf8');\n        return raw ? JSON.parse(raw) : [];\n    } catch (err) {\n        if (err.code === 'ENOENT') { return []; }\n        node.error('No se pudo leer la biblioteca ALS', err);\n        throw err;\n    }\n}\nfunction writeLibrary(data) {\n    fs.writeFileSync(DB_PATH, JSON.stringify(data, null, 2));\n}\nif (!msg.analysis || !msg.analysis.hash) {\n    msg.error = 'No se pudo guardar el an\u00e1lisis (hash faltante).';\n    msg.statusCode = msg.statusCode || 400;\n    msg.analysis = null;\n    return msg;\n}\nconst library = readLibrary();\nconst existing = library.find((entry) => entry.hash === msg.analysis.hash);\nif (existing) {\n    msg.error = 'Este archivo ALS ya fue registrado anteriormente.';\n    msg.statusCode = 409;\n    msg.statusText = 'Archivo duplicado';\n    msg.analysis = null;\n    return msg;\n}\nconst fileName = msg.analysis.hash + '.als';\nconst filePath = path.join(LIB_DIR, fileName);\nfs.mkdirSync(LIB_DIR, { recursive: true });\nif (msg.originalBuffer && Buffer.isBuffer(msg.originalBuffer)) {\n    fs.writeFileSync(filePath, msg.originalBuffer);\n}\nconst record = {\n    ...msg.analysis,\n    storedAt: new Date().toISOString(),\n    filePath: path.posix.join('library', fileName)\n};\nlibrary.push(record);\nwriteLibrary(library);\nmsg.analysis = record;\nmsg.error = null;\nmsg.statusCode = 200;\nmsg.statusText = 'An\u00e1lisis almacenado';\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [
      {
        "var": "fs",
        "module": "fs"
      },
      {
        "var": "path",
        "module": "path"
      }
    ],
    "x": 980,
    "y": 300,
    "wires": [
      [
        "d2bc9fd9a04fde13",
        "f64b6c9ce8b18591"
      ]
    ]
  },
  {
    "id": "4bcaddf8a5c2b6c9",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "Solicitud inv\u00e1lida",
    "func": "if (!msg.error) {\n    msg.error = 'No se pudo procesar el archivo.';\n}\nif (!msg.statusCode) {\n    msg.statusCode = 400;\n}\nmsg.analysis = null;\nmsg.statusText = 'Error al analizar el archivo';\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 760,
    "y": 400,
    "wires": [
      [
        "d2bc9fd9a04fde13",
        "f64b6c9ce8b18591"
      ]
    ]
  },
  {
    "id": "d2bc9fd9a04fde13",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "Preparar respuesta HTTP",
    "func": "if (!msg.statusCode) {\n    msg.statusCode = msg.error ? 400 : 200;\n}\nmsg.payload = msg.error ? { error: msg.error } : msg.analysis;\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 1240,
    "y": 240,
    "wires": [
      [
        "3c1fe83bb7f4a173"
      ]
    ]
  },
  {
    "id": "3c1fe83bb7f4a173",
    "type": "http response",
    "z": "f68df1c4d2e4e1a9",
    "name": "",
    "statusCode": "",
    "headers": {},
    "x": 1440,
    "y": 240,
    "wires": []
  },
  {
    "id": "f64b6c9ce8b18591",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "Enviar al dashboard",
    "func": "return {\n    payload: msg.analysis,\n    error: msg.error || null,\n    statusText: msg.statusText || ''\n};",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 1240,
    "y": 380,
    "wires": [
      [
        "f9c6054bed66e56e",
        "dc3db36cf0f12d58"
      ]
    ]
  },
  {
    "id": "dc3db36cf0f12d58",
    "type": "debug",
    "z": "f68df1c4d2e4e1a9",
    "name": "Resumen debug",
    "active": true,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "true",
    "targetType": "full",
    "statusVal": "",
    "statusType": "auto",
    "x": 1450,
    "y": 440,
    "wires": []
  },
  {
    "id": "5d10419c2babf6bc",
    "type": "http in",
    "z": "f68df1c4d2e4e1a9",
    "name": "GET /als/library",
    "url": "/als/library",
    "method": "get",
    "upload": false,
    "swaggerDoc": "",
    "x": 200,
    "y": 500,
    "wires": [
      [
        "8c33f8cbb1c2669c"
      ]
    ]
  },
  {
    "id": "8c33f8cbb1c2669c",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "Listar biblioteca ALS",
    "func": "const DB_PATH = '/data/als-library.json';\ntry {\n    const raw = fs.readFileSync(DB_PATH, 'utf8');\n    const data = raw ? JSON.parse(raw) : [];\n    msg.payload = data;\n    msg.statusCode = 200;\n} catch (err) {\n    if (err.code === 'ENOENT') {\n        msg.payload = [];\n        msg.statusCode = 200;\n    } else {\n        node.error('No se pudo leer la biblioteca ALS', err);\n        msg.statusCode = 500;\n        msg.payload = { error: 'No se pudo leer la biblioteca ALS' };\n    }\n}\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [
      {
        "var": "fs",
        "module": "fs"
      }
    ],
    "x": 480,
    "y": 500,
    "wires": [
      [
        "0f16a9fca5dce956"
      ]
    ]
  },
  {
    "id": "0f16a9fca5dce956",
    "type": "http response",
    "z": "f68df1c4d2e4e1a9",
    "name": "",
    "statusCode": "",
    "headers": {},
    "x": 700,
    "y": 500,
    "wires": []
  },
  {
    "id": "c87f0e0d1bdbf964",
    "type": "ui_group",
    "name": "Chatbot",
    "tab": "c1ef7251baee3fe8",
    "order": 3,
    "disp": true,
    "width": "12",
    "collapse": false,
    "className": ""
  },
  {
    "id": "85899363d75b2e10",
    "type": "ui_template",
    "z": "f68df1c4d2e4e1a9",
    "group": "c87f0e0d1bdbf964",
    "name": "Chatbot UI",
    "order": 0,
    "width": "12",
    "height": "10",
    "format": "\n<md-card class=\"chatbot-card\">\n  <md-card-title>\n    <span class=\"md-headline\">Chatbot ALS</span>\n  </md-card-title>\n  <md-card-content>\n    <div class=\"chat-log\">\n      <div ng-repeat=\"item in messages\" class=\"message {{item.role}}\">\n        <strong>{{item.role === 'user' ? 'T\u00fa' : (item.role === 'bot' ? 'ALS Bot' : 'Error')}}:</strong>\n        <span>{{item.text}}</span>\n      </div>\n    </div>\n    <form ng-submit=\"sendMessage()\">\n      <md-input-container class=\"md-block\">\n        <label>Escribe algo (ej. generame un als de reggaeton 2001)</label>\n        <input ng-model=\"promptText\" required ng-disabled=\"busy\" />\n      </md-input-container>\n      <md-button class=\"md-raised md-primary\" type=\"submit\" ng-disabled=\"busy\">{{busy ? 'Generando...' : 'Enviar'}}</md-button>\n    </form>\n  </md-card-content>\n</md-card>\n<script>\n(function(scope) {\n  scope.messages = [];\n  scope.promptText = '';\n  scope.busy = false;\n  function pushMessage(role, text) {\n    scope.messages.push({ role: role, text: text });\n    if (scope.messages.length > 50) {\n      scope.messages.shift();\n    }\n    scope.$applyAsync();\n  }\n  scope.sendMessage = function() {\n    if (!scope.promptText || scope.busy) { return; }\n    const text = scope.promptText;\n    scope.promptText = '';\n    pushMessage('user', text);\n    scope.busy = true;\n    fetch('/als/chat', {\n      method: 'POST',\n      headers: { 'Content-Type': 'application/json' },\n      body: JSON.stringify({ prompt: text })\n    })\n      .then(function(res) {\n        return res.text().then(function(body) {\n          var data;\n          try { data = body ? JSON.parse(body) : {}; } catch (err) { data = { error: body || err.message }; }\n          return { ok: res.ok, data: data };\n        });\n      })\n      .then(function(result) {\n        if (result.ok) {\n          if (result.data && result.data.projectName) {\n            var message = 'Proyecto generado: ' + result.data.projectName + '. Archivo: ' + result.data.outputPath;\n            pushMessage('bot', message);\n          } else if (result.data && result.data.reply) {\n            pushMessage('bot', result.data.reply);\n          } else {\n            pushMessage('bot', 'Listo. \u00bfQuieres que genere un ALS?');\n          }\n        } else {\n          pushMessage('error', result.data && result.data.error ? result.data.error : 'Error generando ALS');\n        }\n      })\n      .catch(function(err) {\n        pushMessage('error', err.message || 'Error inesperado');\n      })\n      .finally(function() {\n        scope.busy = false;\n        scope.$applyAsync();\n      });\n  };\n})(scope);\n</script>\n<style>\n  .chatbot-card .chat-log {\n    max-height: 260px;\n    overflow-y: auto;\n    margin-bottom: 12px;\n    padding: 8px;\n    background: rgba(0,0,0,0.05);\n    border-radius: 6px;\n  }\n  .chatbot-card .message { margin-bottom: 6px; }\n  .chatbot-card .message.user strong { color: #1976d2; }\n  .chatbot-card .message.bot strong { color: #2e7d32; }\n  .chatbot-card .message.error strong { color: #c62828; }\n</style>\n",
    "storeOutMessages": false,
    "fwdInMessages": false,
    "resendOnRefresh": true,
    "templateScope": "local",
    "className": "",
    "x": 240,
    "y": 520,
    "wires": []
  },
  {
    "id": "b6a5b6ec8f7a4c33",
    "type": "http in",
    "z": "f68df1c4d2e4e1a9",
    "name": "POST /als/chat",
    "url": "/als/chat",
    "method": "post",
    "upload": false,
    "swaggerDoc": "",
    "x": 220,
    "y": 660,
    "wires": [
      [
        "ca7c4bb1e81b009a"
      ]
    ]
  },
  {
    "id": "ca7c4bb1e81b009a",
    "type": "function",
    "z": "f68df1c4d2e4e1a9",
    "name": "Chatbot ALS",
    "func": "\nconst raw = typeof msg.payload === 'string' ? msg.payload : JSON.stringify(msg.payload || {});\nlet body = {};\ntry {\n    body = typeof msg.payload === 'object' ? msg.payload : JSON.parse(raw);\n} catch (err) {\n    body = {};\n}\nconst prompt = (body.prompt || body.message || msg.prompt || '').trim();\nconst chatHistory = context.get('chatHistory') || [];\nfunction remember(role, text) {\n    if (!text) { return; }\n    chatHistory.push({ role, text });\n    if (chatHistory.length > 40) {\n        chatHistory.shift();\n    }\n    context.set('chatHistory', chatHistory);\n}\nif (!prompt) {\n    msg.statusCode = 400;\n    msg.payload = { error: 'Falta el prompt del chatbot.' };\n    return msg;\n}\nconst generator = global.get('alsGenerator');\nif (!generator || typeof generator.generateFromPrompt !== 'function') {\n    msg.statusCode = 500;\n    msg.payload = { error: 'Generador no disponible.' };\n    return msg;\n}\nremember('user', prompt);\nconst info = generator.listLibrary ? generator.listLibrary() : [];\nconst sources = generator.listSources ? generator.listSources() : [];\nfunction shouldGenerate(text) {\n    return /(genera(me)?|crea(me)?|haz(me)?|arma(me)?|produce(me)?).*(als|ableton|beat|proyecto)/i.test(text);\n}\nfunction shouldDescribeSources(text) {\n    return /(source|sources|stems|loops|samples|archivos|carpeta)/i.test(text);\n}\nfunction describeSources(list) {\n    if (!list || !list.length) {\n        return 'Todav\u00eda no hay archivos en data/sources/. Copia stems o loops ah\u00ed para que puedan usarse como referencia.';\n    }\n    const preview = list.slice(0, 10).join(', ');\n    return `Encontr\u00e9 ${list.length} archivos en data/sources/. Ejemplos: ${preview}${list.length > 10 ? ' ...' : ''}`;\n}\nfunction buildSummary(text, libraryList, sourceList) {\n    if (!libraryList || !libraryList.length) {\n        return 'A\u00fan no tengo proyectos cargados. Sube un .als primero y luego dime \"generame un als ...\" para empezar.';\n    }\n    const recent = libraryList.slice(-1)[0];\n    const parts = [\n        `Tengo ${libraryList.length} proyectos almacenados. El \u00faltimo fue \"${recent.projectName}\" a ${recent.liveSet?.tempo || 'N/D'} BPM.`,\n        sourceList && sourceList.length ? `Hay ${sourceList.length} recursos en sources (ej: ${sourceList.slice(0,3).join(', ')})` : 'A\u00fan no hay archivos en data/sources/.',\n        'Cuando est\u00e9s listo dime algo como \"generame un als afrohouse 2025 con 124 bpm\" y preparo la sesi\u00f3n.'\n    ];\n    return parts.join(' ');\n}\nif (shouldDescribeSources(prompt)) {\n    const reply = describeSources(sources);\n    remember('bot', reply);\n    msg.statusCode = 200;\n    msg.payload = { reply };\n    return msg;\n}\nif (!shouldGenerate(prompt)) {\n    return (async () => {\n        try {\n            const reply = await (generator.chatReply ? generator.chatReply(prompt, info, sources, chatHistory) : buildSummary(prompt, info, sources));\n            remember('bot', reply);\n            msg.statusCode = 200;\n            msg.payload = { reply };\n            return msg;\n        } catch (err) {\n            node.error(err.message, msg);\n            msg.statusCode = 500;\n            msg.payload = { error: err.message };\n            return msg;\n        }\n    })();\n}\nreturn (async () => {\n    try {\n        const result = await generator.generateFromPrompt(prompt);\n        const summary = `Listo, gener\u00e9 \"${result.plan.projectName}\" usando ${result.plan.templateHash}.`;\n        remember('bot', summary);\n        msg.statusCode = 200;\n        msg.payload = {\n            prompt: prompt,\n            projectName: result.plan.projectName,\n            templateHash: result.plan.templateHash,\n            outputPath: result.outputPath,\n            registered: result.registered\n        };\n        return msg;\n    } catch (err) {\n        node.error(err.message, msg);\n        remember('bot', err.message);\n        msg.statusCode = 500;\n        msg.payload = { error: err.message };\n        return msg;\n    }\n})();\n",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 520,
    "y": 660,
    "wires": [
      [
        "e0b21f83f64a49c7"
      ]
    ]
  },
  {
    "id": "e0b21f83f64a49c7",
    "type": "http response",
    "z": "f68df1c4d2e4e1a9",
    "name": "",
    "statusCode": "",
    "headers": {},
    "x": 720,
    "y": 660,
    "wires": []
  }
]