Flow to download youtube video

YT_DL_flow.json

[
    {
        "id": "8e4aba9fe8f50732",
        "type": "tab",
        "label": "DL YT",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "6404f0ff6a765c9a",
        "type": "http request",
        "z": "8e4aba9fe8f50732",
        "name": "Get Formats",
        "method": "POST",
        "ret": "obj",
        "paytoqs": "ignore",
        "url": "https://yt1s.com/api/ajaxSearch/index",
        "tls": "3844a92b.fde956",
        "persist": false,
        "proxy": "",
        "authType": "",
        "senderr": false,
        "x": 510,
        "y": 180,
        "wires": [
            [
                "941ccf148cd8b3a8"
            ]
        ]
    },
    {
        "id": "a8418d300a596c8a",
        "type": "inject",
        "z": "8e4aba9fe8f50732",
        "name": "",
        "props": [
            {
                "p": "yt_url",
                "v": "https://www.youtube.com/watch?v=6oAeSCikow4",
                "vt": "str"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "x": 170,
        "y": 180,
        "wires": [
            [
                "1058166f472370e4"
            ]
        ]
    },
    {
        "id": "1058166f472370e4",
        "type": "change",
        "z": "8e4aba9fe8f50732",
        "name": "Set payload",
        "rules": [
            {
                "t": "set",
                "p": "payload",
                "pt": "msg",
                "to": "'vt=home&q=' & $encodeUrlComponent(yt_url)",
                "tot": "jsonata"
            },
            {
                "t": "set",
                "p": "headers",
                "pt": "msg",
                "to": "{\"Content-Type\":\"application/x-www-form-urlencoded; charset=UTF-8\"}",
                "tot": "json"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 330,
        "y": 180,
        "wires": [
            [
                "6404f0ff6a765c9a"
            ]
        ]
    },
    {
        "id": "941ccf148cd8b3a8",
        "type": "function",
        "z": "8e4aba9fe8f50732",
        "name": "Find format",
        "func": "const SIZE_PARSE = /^(\\d+(?:\\.\\d+)?) ([KM]B)$/;\nconst TIMESTAMP = (new Date()).toLocaleString(\"en-US\",\n    { month: \"short\", day: \"numeric\", hour12: false, hour: \"numeric\", minute: \"numeric\" }\n);\n\nif (msg.statusCode >= 400){\n    node.status({fill:\"red\",shape:\"ring\",text:`Error ${msg.statusCode} at ${TIMESTAMP}`});\n    return [null, msg];\n}\n\nif (!msg.payload.links.mp4){\n    node.status({ fill: \"red\", shape: \"ring\", text: `No mp4 formats at ${TIMESTAMP}`});\n    return [null, msg];\n}\n\n// Find the largest mp4 format that is below 20MB max\nmsg.format = Object.values(msg.payload.links.mp4)\n    .filter(function(value){\n        if(value.size.endsWith('KB')){\n            return true;\n        }\n        if(value.size.endsWith('MB')){\n            let mbs = value.size.replace(SIZE_PARSE, '$1');\n            return +(mbs) <= 20;\n        }\n    })\n    .reduce(function(prev, curr){\n        if(!prev){\n            return curr;\n        }\n        let prevSize = SIZE_PARSE.exec(prev.size);\n        let currSize = SIZE_PARSE.exec(curr.size);\n        if(prevSize[2] !== currSize[2]){\n            return prevSize[2] === 'MB' ? prev : curr;\n        }\n        return +(prevSize[1]) < +(currSize[1]) ? curr : prev;\n    })\n;\n\n\nlet vid_id = new url.URL(msg.yt_url).searchParams.get('v');\nmsg.payload = `vid=${encodeURIComponent(vid_id)}&k=${encodeURIComponent(msg.format.k)}`\nmsg.headers = {\n    \"Content-Type\": \"application/x-www-form-urlencoded; charset=UTF-8\"\n};\nnode.status({ fill: \"green\", shape: \"dot\", text: `${vid_id} (${msg.format.size}) at ${TIMESTAMP}`});\n\nreturn [msg, null];",
        "outputs": 2,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [
            {
                "var": "url",
                "module": "url"
            }
        ],
        "x": 690,
        "y": 180,
        "wires": [
            [
                "689946c0a9da09d8"
            ],
            [
                "1b25200a7673df10"
            ]
        ],
        "outputLabels": [
            "Success",
            "Error"
        ]
    },
    {
        "id": "689946c0a9da09d8",
        "type": "http request",
        "z": "8e4aba9fe8f50732",
        "name": "",
        "method": "POST",
        "ret": "obj",
        "paytoqs": "ignore",
        "url": "https://yt1s.com/api/ajaxConvert/convert",
        "tls": "3844a92b.fde956",
        "persist": false,
        "proxy": "",
        "authType": "",
        "senderr": false,
        "x": 870,
        "y": 180,
        "wires": [
            [
                "96edcc5059e01b1c"
            ]
        ]
    },
    {
        "id": "96edcc5059e01b1c",
        "type": "switch",
        "z": "8e4aba9fe8f50732",
        "name": "Error?",
        "property": "statusCode",
        "propertyType": "msg",
        "rules": [
            {
                "t": "lt",
                "v": "400",
                "vt": "num"
            },
            {
                "t": "else"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 2,
        "x": 1030,
        "y": 180,
        "wires": [
            [
                "d9b7032e97666040",
                "53786536ac3cfa22"
            ],
            [
                "1b25200a7673df10"
            ]
        ],
        "outputLabels": [
            "Success",
            "Error"
        ]
    },
    {
        "id": "1b25200a7673df10",
        "type": "debug",
        "z": "8e4aba9fe8f50732",
        "name": "Error debug",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1210,
        "y": 280,
        "wires": []
    },
    {
        "id": "53ed95e65bfed14e",
        "type": "http request",
        "z": "8e4aba9fe8f50732",
        "name": "DL video",
        "method": "GET",
        "ret": "bin",
        "paytoqs": "ignore",
        "url": "",
        "tls": "3844a92b.fde956",
        "persist": false,
        "proxy": "",
        "authType": "",
        "senderr": false,
        "x": 1360,
        "y": 160,
        "wires": [
            [
                "e74c2a16bd863a13"
            ]
        ]
    },
    {
        "id": "d9b7032e97666040",
        "type": "change",
        "z": "8e4aba9fe8f50732",
        "name": "Set request",
        "rules": [
            {
                "t": "set",
                "p": "url",
                "pt": "msg",
                "to": "payload.dlink",
                "tot": "msg"
            },
            {
                "t": "set",
                "p": "filename",
                "pt": "msg",
                "to": "'/share/' & $replace(payload.title, /\\W+/, '_') & '.' & payload.ftype\t",
                "tot": "jsonata"
            },
            {
                "t": "delete",
                "p": "payload",
                "pt": "msg"
            },
            {
                "t": "delete",
                "p": "headers",
                "pt": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1210,
        "y": 160,
        "wires": [
            [
                "53ed95e65bfed14e"
            ]
        ]
    },
    {
        "id": "53786536ac3cfa22",
        "type": "debug",
        "z": "8e4aba9fe8f50732",
        "name": "Success (with DL link)",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1240,
        "y": 120,
        "wires": []
    },
    {
        "id": "e74c2a16bd863a13",
        "type": "function",
        "z": "8e4aba9fe8f50732",
        "name": "Write out file",
        "func": "const TIMESTAMP = (new Date()).toLocaleString(\"en-US\",\n    { month: \"short\", day: \"numeric\", hour12: false, hour: \"numeric\", minute: \"numeric\" }\n);\n\nif(msg.statusCode < 400){\n    node.status({fill:\"green\",shape:\"dot\",text:`Success at ${TIMESTAMP}`});\n    fs.writeFile(msg.filename, msg.payload, 'binary', function (err) {\n        node.status({fill:\"red\",shape:\"ring\",text:`File write error at ${TIMESTAMP}`});\n        node.send(msg);\n    });\n}\nelse{\n    node.status({fill:\"red\",shape:\"ring\",text:`API Error ${msg.statusCode} at ${TIMESTAMP}`});\n    return msg;\n}\n",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [
            {
                "var": "fs",
                "module": "fs"
            }
        ],
        "x": 1510,
        "y": 160,
        "wires": [
            []
        ],
        "outputLabels": [
            "Error"
        ]
    },
    {
        "id": "3844a92b.fde956",
        "type": "tls-config",
        "name": "General SSL",
        "cert": "",
        "key": "",
        "ca": "",
        "certname": "",
        "keyname": "",
        "caname": "",
        "servername": "",
        "verifyservercert": true
    }
]