[
  {
    "id": "b2c3d4e5f6a70001",
    "type": "tab",
    "label": "S2 · Meteorología y API",
    "disabled": false,
    "info": "Sesión 2: consulta periódica a Open-Meteo, decisión de ventilación con la temperatura exterior y endpoint REST propio."
  },
  {
    "id": "b2c3d4e5f6a70002",
    "type": "comment",
    "z": "b2c3d4e5f6a70001",
    "name": "0 · Umbrales de ventilación",
    "info": "Contexto de flujo de esta pestaña.",
    "x": 160,
    "y": 40,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70003",
    "type": "inject",
    "z": "b2c3d4e5f6a70001",
    "name": "cargar umbrales",
    "props": [
      {
        "p": "payload"
      }
    ],
    "repeat": "",
    "crontab": "",
    "once": true,
    "onceDelay": 0.1,
    "topic": "",
    "payload": "{\"temperatura\":{\"aviso\":30},\"margenExterior\":2}",
    "payloadType": "json",
    "x": 160,
    "y": 80,
    "wires": [
      [
        "b2c3d4e5f6a70004"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70004",
    "type": "change",
    "z": "b2c3d4e5f6a70001",
    "name": "flow.umbrales = payload",
    "rules": [
      {
        "t": "set",
        "p": "umbrales",
        "pt": "flow",
        "to": "payload",
        "tot": "msg"
      }
    ],
    "action": "",
    "property": "",
    "from": "",
    "to": "",
    "reg": false,
    "x": 390,
    "y": 80,
    "wires": [
      []
    ]
  },
  {
    "id": "b2c3d4e5f6a70005",
    "type": "comment",
    "z": "b2c3d4e5f6a70001",
    "name": "1 · Previsión meteorológica (Open-Meteo)",
    "info": "Cada 15 min. La URL se construye con las variables de entorno INVERNADERO_LAT / INVERNADERO_LON.",
    "x": 200,
    "y": 140,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70006",
    "type": "inject",
    "z": "b2c3d4e5f6a70001",
    "name": "cada 15 min",
    "props": [
      {
        "p": "payload"
      }
    ],
    "repeat": "900",
    "crontab": "",
    "once": true,
    "onceDelay": "2",
    "topic": "",
    "payload": "",
    "payloadType": "date",
    "x": 150,
    "y": 180,
    "wires": [
      [
        "b2c3d4e5f6a70007"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70007",
    "type": "function",
    "z": "b2c3d4e5f6a70001",
    "name": "construir URL",
    "func": "// Coordenadas del invernadero desde variables de entorno del contenedor\nconst lat = env.get(\"INVERNADERO_LAT\") || \"38.3852\";\nconst lon = env.get(\"INVERNADERO_LON\") || \"-0.5143\";\n\nmsg.url = \"https://api.open-meteo.com/v1/forecast\"\n    + `?latitude=${lat}&longitude=${lon}`\n    + \"&current=temperature_2m,relative_humidity_2m\"\n    + \"&hourly=precipitation_probability,precipitation,et0_fao_evapotranspiration\"\n    + \"&forecast_hours=6&timezone=Europe%2FMadrid\";\nmsg.requestTimeout = 10000;   // ms: sin respuesta en 10 s -> error\nreturn msg;",
    "outputs": 1,
    "timeout": 0,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 340,
    "y": 180,
    "wires": [
      [
        "b2c3d4e5f6a70008"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70101",
    "type": "inject",
    "z": "b2c3d4e5f6a70001",
    "name": "probar error 400",
    "props": [
      {
        "p": "url",
        "v": "https://api.open-meteo.com/v1/forecast?latitude=999&longitude=-0.5143&current=temperature_2m",
        "vt": "str"
      }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "",
    "x": 160,
    "y": 222,
    "wires": [
      [
        "b2c3d4e5f6a70008"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70102",
    "type": "inject",
    "z": "b2c3d4e5f6a70001",
    "name": "probar sin red",
    "props": [
      {
        "p": "url",
        "v": "https://api.open-meteo.invalid/v1/forecast",
        "vt": "str"
      }
    ],
    "repeat": "",
    "crontab": "",
    "once": false,
    "onceDelay": 0.1,
    "topic": "",
    "x": 150,
    "y": 252,
    "wires": [
      [
        "b2c3d4e5f6a70008"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70008",
    "type": "http request",
    "z": "b2c3d4e5f6a70001",
    "name": "Open-Meteo",
    "method": "GET",
    "ret": "obj",
    "paytoqs": "ignore",
    "url": "",
    "tls": "",
    "persist": false,
    "proxy": "",
    "insecureHTTPParser": false,
    "authType": "",
    "senderr": false,
    "headers": [],
    "x": 530,
    "y": 180,
    "wires": [
      [
        "b2c3d4e5f6a70009"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70009",
    "type": "switch",
    "z": "b2c3d4e5f6a70001",
    "name": "¿200 OK?",
    "property": "statusCode",
    "propertyType": "msg",
    "rules": [
      {
        "t": "eq",
        "v": "200",
        "vt": "num"
      },
      {
        "t": "else"
      }
    ],
    "checkall": "false",
    "repair": false,
    "outputs": 2,
    "x": 700,
    "y": 180,
    "wires": [
      [
        "b2c3d4e5f6a70010"
      ],
      [
        "b2c3d4e5f6a70012"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70010",
    "type": "function",
    "z": "b2c3d4e5f6a70001",
    "name": "extraer previsión",
    "func": "// Resume la respuesta en los campos que usa el sistema\nconst c = msg.payload.current;\nconst h = msg.payload.hourly;\nconst suma = a => a.reduce((s, x) => s + (x ?? 0), 0);\n\nconst meteo = {\n    tempExterior: c.temperature_2m,\n    humExterior: c.relative_humidity_2m,\n    lluvia6h: Math.round(suma(h.precipitation) * 10) / 10,\n    probLluviaMax: Math.max(...h.precipitation_probability),\n    et0_6h: Math.round(suma(h.et0_fao_evapotranspiration) * 100) / 100,\n    ts: Date.now()\n};\nglobal.set(\"meteo\", meteo);\n\nnode.status({ fill: \"green\", shape: \"dot\", text: `${meteo.tempExterior} ºC fuera` });\nmsg.payload = meteo;\nreturn msg;",
    "outputs": 1,
    "timeout": 0,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 890,
    "y": 160,
    "wires": [
      [
        "b2c3d4e5f6a70011"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70011",
    "type": "debug",
    "z": "b2c3d4e5f6a70001",
    "name": "previsión",
    "active": true,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "payload",
    "targetType": "msg",
    "statusVal": "",
    "statusType": "auto",
    "x": 1080,
    "y": 160,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70012",
    "type": "function",
    "z": "b2c3d4e5f6a70001",
    "name": "respuesta inesperada",
    "func": "// La API ha respondido, pero no con 200 (p. ej. 400 por parámetros incorrectos)\n// Sin red, el http request también envía el mensaje con statusCode = \"ENOTFOUND\",\n// \"ETIMEDOUT\"...: esos casos ya los trata el catch\nif (typeof msg.statusCode !== \"number\") return null;\nconst motivo = msg.payload && msg.payload.reason ? msg.payload.reason : \"sin detalle\";\nnode.status({ fill: \"red\", shape: \"ring\", text: `HTTP ${msg.statusCode}` });\nmsg.payload = { origen: \"Open-Meteo\", statusCode: msg.statusCode, motivo };\nreturn msg;",
    "outputs": 1,
    "timeout": 0,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 900,
    "y": 220,
    "wires": [
      [
        "b2c3d4e5f6a70015"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70013",
    "type": "catch",
    "z": "b2c3d4e5f6a70001",
    "name": "errores de red / código",
    "scope": [
      "b2c3d4e5f6a70008",
      "b2c3d4e5f6a70010"
    ],
    "uncaught": false,
    "x": 190,
    "y": 280,
    "wires": [
      [
        "b2c3d4e5f6a70014"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70014",
    "type": "function",
    "z": "b2c3d4e5f6a70001",
    "name": "registrar error",
    "func": "// Sin conexión, timeout, JSON mal formado o fallo en \"extraer previsión\"\nnode.status({ fill: \"red\", shape: \"dot\", text: msg.error.message.slice(0, 40) });\nmsg.payload = { origen: msg.error.source.name, error: msg.error.message };\nreturn msg;",
    "outputs": 1,
    "timeout": 0,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 400,
    "y": 280,
    "wires": [
      [
        "b2c3d4e5f6a70015"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70015",
    "type": "debug",
    "z": "b2c3d4e5f6a70001",
    "name": "errores",
    "active": true,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "payload",
    "targetType": "msg",
    "statusVal": "",
    "statusType": "auto",
    "x": 1080,
    "y": 260,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70016",
    "type": "status",
    "z": "b2c3d4e5f6a70001",
    "name": "estado de la petición",
    "scope": [
      "b2c3d4e5f6a70008"
    ],
    "x": 200,
    "y": 320,
    "wires": [
      [
        "b2c3d4e5f6a70017"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70017",
    "type": "debug",
    "z": "b2c3d4e5f6a70001",
    "name": "estado http",
    "active": false,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "status",
    "targetType": "msg",
    "statusVal": "",
    "statusType": "auto",
    "x": 410,
    "y": 320,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70018",
    "type": "comment",
    "z": "b2c3d4e5f6a70001",
    "name": "2 · Ventilación: ¿fuera hace más fresco?",
    "info": "Ventilar solo enfría si la temperatura exterior es menor que la interior.",
    "x": 200,
    "y": 380,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70019",
    "type": "mqtt in",
    "z": "b2c3d4e5f6a70001",
    "name": "temperatura interior",
    "topic": "invernadero/dht22/temperatura",
    "qos": "0",
    "datatype": "utf8",
    "broker": "a1b2c3d4e5f600b1",
    "nl": false,
    "rap": true,
    "rh": 0,
    "inputs": 0,
    "x": 170,
    "y": 420,
    "wires": [
      [
        "b2c3d4e5f6a70020"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70020",
    "type": "change",
    "z": "b2c3d4e5f6a70001",
    "name": "texto → número",
    "rules": [
      {
        "t": "set",
        "p": "payload",
        "pt": "msg",
        "to": "$number(payload)",
        "tot": "jsonata"
      }
    ],
    "action": "",
    "property": "",
    "from": "",
    "to": "",
    "reg": false,
    "x": 380,
    "y": 420,
    "wires": [
      [
        "b2c3d4e5f6a70021"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70021",
    "type": "function",
    "z": "b2c3d4e5f6a70001",
    "name": "decidir ventilación",
    "func": "const interior = msg.payload;\nconst u = flow.get(\"umbrales\");\nif (!u) {\n    // Al arrancar pueden llegar lecturas retenidas antes que los umbrales\n    node.warn(\"Lectura ignorada: los umbrales aún no están cargados\");\n    return null;\n}\nlet meteo = global.get(\"meteo\");\n\n// Una previsión de hace más de 1 h no es fiable\nif (meteo && Date.now() - meteo.ts > 60 * 60 * 1000) meteo = null;\n\nlet ventilar = false;\nlet motivo;\nif (interior < u.temperatura.aviso) {\n    motivo = \"temperatura interior correcta\";\n} else if (!meteo) {\n    ventilar = true;\n    motivo = \"calor dentro; sin datos meteorológicos recientes\";\n} else if (meteo.tempExterior <= interior - u.margenExterior) {\n    ventilar = true;\n    motivo = `fuera hace ${meteo.tempExterior} ºC`;\n} else {\n    motivo = `ventilar no enfría: fuera hace ${meteo.tempExterior} ºC`;\n}\n\nmsg.payload = { interior, exterior: meteo ? meteo.tempExterior : null, ventilar, motivo };\nglobal.set(\"ventilacion\", msg.payload);\nnode.status({ fill: ventilar ? \"blue\" : \"grey\", shape: \"dot\", text: ventilar ? \"ventilar\" : \"no ventilar\" });\nreturn msg;",
    "outputs": 1,
    "timeout": 0,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 590,
    "y": 420,
    "wires": [
      [
        "b2c3d4e5f6a70022"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70022",
    "type": "debug",
    "z": "b2c3d4e5f6a70001",
    "name": "decisión ventilación",
    "active": true,
    "tosidebar": true,
    "console": false,
    "tostatus": false,
    "complete": "payload",
    "targetType": "msg",
    "statusVal": "",
    "statusType": "auto",
    "x": 810,
    "y": 420,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70023",
    "type": "comment",
    "z": "b2c3d4e5f6a70001",
    "name": "3 · API propia: GET /api/invernadero/estado",
    "info": "Pruébalo en http://localhost:1880/api/invernadero/estado",
    "x": 220,
    "y": 480,
    "wires": []
  },
  {
    "id": "b2c3d4e5f6a70024",
    "type": "http in",
    "z": "b2c3d4e5f6a70001",
    "name": "",
    "url": "/api/invernadero/estado",
    "method": "get",
    "upload": false,
    "swaggerDoc": "",
    "x": 200,
    "y": 520,
    "wires": [
      [
        "b2c3d4e5f6a70025"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70025",
    "type": "function",
    "z": "b2c3d4e5f6a70001",
    "name": "componer estado",
    "func": "const meteo = global.get(\"meteo\");\n\nmsg.payload = {\n    ts: new Date().toISOString(),\n    ventilacion: global.get(\"ventilacion\") ?? null,\n    meteo: meteo ?? null,\n    antiguedadMeteoMin: meteo ? Math.round((Date.now() - meteo.ts) / 60000) : null\n};\nreturn msg;",
    "outputs": 1,
    "timeout": 0,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 450,
    "y": 520,
    "wires": [
      [
        "b2c3d4e5f6a70026"
      ]
    ]
  },
  {
    "id": "b2c3d4e5f6a70026",
    "type": "http response",
    "z": "b2c3d4e5f6a70001",
    "name": "",
    "statusCode": "",
    "headers": {
      "content-type": "application/json"
    },
    "x": 650,
    "y": 520,
    "wires": []
  },
  {
    "id": "a1b2c3d4e5f600b1",
    "type": "mqtt-broker",
    "name": "Broker invernadero",
    "broker": "${MQTT_HOST}",
    "port": "${MQTT_PORT}",
    "clientid": "",
    "autoConnect": true,
    "usetls": false,
    "protocolVersion": "4",
    "keepalive": "60",
    "cleansession": true,
    "autoUnsubscribe": true,
    "birthTopic": "",
    "birthQos": "0",
    "birthRetain": "false",
    "birthPayload": "",
    "birthMsg": {},
    "closeTopic": "",
    "closeQos": "0",
    "closeRetain": "false",
    "closePayload": "",
    "closeMsg": {},
    "willTopic": "",
    "willQos": "0",
    "willRetain": "false",
    "willPayload": "",
    "willMsg": {},
    "userProps": "",
    "sessionExpiry": ""
  }
]