Weekly Coffee Chat Mattermost Version

About This Script

Features:

• Custom JavaScript function processing
• Scheduled automation with cron triggers
• Integrates with Mattermost

{
    "nodes": [
        {
            "name": "Divide into groups",
            "type": "n8n-nodes-base.function",
            "position": [
                1060,
                300
            ],
            "parameters": {
                "functionCode": "const ideal_group_size = 3;\nlet groups = [];\nlet data_as_array = [];\nlet newItems = [];\n\n// Take all the users and add them to an array\nfor (let j = 0; j < items.length; j++) {\n  data_as_array.push({username: items[j].json.username, email: items[j].json.email});\n}\n\n// Fisher-Yates (aka Knuth) Shuffle\nfunction shuffle(array) {\n  var currentIndex = array.length, temporaryValue, randomIndex;\n\n  // While there remain elements to shuffle...\n  while (0 !== currentIndex) {\n\n    // Pick a remaining element...\n    randomIndex = Math.floor(Math.random() * currentIndex);\n    currentIndex -= 1;\n\n    // And swap it with the current element.\n    temporaryValue = array[currentIndex];\n    array[currentIndex] = array[randomIndex];\n    array[randomIndex] = temporaryValue;\n  }\n\n  return array;\n}\n\n// Randomize the sequence of names in the array\ndata_as_array = shuffle(data_as_array);\n\n// Create groups of ideal group size (3)\nfor (let i = 0; i < data_as_array.length; i += ideal_group_size) {\n  groups.push(data_as_array.slice(i, i + ideal_group_size));\n}\n\n// Make sure that no group has just one person. If it does, take\n// one from previous group and add it to that group \nfor (let k = 0; k < groups.length; k++) {\n  if (groups[k].length === 1) {\n    groups[k].push(groups[k-1].shift());\n  }\n}\n\nfor (let l = 0; l < groups.length; l++) {\n    newItems.push({json: {groupsUsername: groups[l].map(a=> a.username), groupsEmail: groups[l].map(b=> b.email)}})\n}\n\nreturn newItems;"
            },
            "typeVersion": 1,
            "id": "a691355b-ddad-4a9e-8e7c-0c91603407e2"
        },
        {
            "name": "Greetings",
            "type": "n8n-nodes-base.mattermost",
            "position": [
                650,
                300
            ],
            "parameters": {
                "message": "\ud83d\udc4b Happy Monday\n\nGroups for this week's virtual coffee are:",
                "channelId": "Enter Your Channel ID",
                "attachments": [],
                "otherOptions": []
            },
            "credentials": {
                "mattermostApi": "Mattermost Cred"
            },
            "typeVersion": 1,
            "id": "256b2b62-8277-41c9-8369-0a6cecba92e8"
        },
        {
            "name": "Weekly trigger on monday",
            "type": "n8n-nodes-base.cron",
            "position": [
                450,
                300
            ],
            "parameters": {
                "triggerTimes": {
                    "item": [
                        {
                            "hour": 10,
                            "mode": "everyWeek"
                        }
                    ]
                }
            },
            "typeVersion": 1,
            "id": "355bfde5-b4cf-47aa-a1a6-db94fbda37e5"
        },
        {
            "name": "Announce groups",
            "type": "n8n-nodes-base.mattermost",
            "position": [
                1250,
                200
            ],
            "parameters": {
                "message": "=\u2600\ufe0f {{$node[\"Divide into groups\"].json[\"groupsUsername\"].join(', ')}}",
                "channelId": "=",
                "attachments": [],
                "otherOptions": []
            },
            "credentials": {
                "mattermostApi": "Mattermost Cred"
            },
            "typeVersion": 1,
            "id": "5bb494ab-2716-45d1-970c-df8c908cbd96"
        },
        {
            "name": "Employees in coffee chat channel",
            "type": "n8n-nodes-base.mattermost",
            "position": [
                850,
                300
            ],
            "parameters": {
                "resource": "user",
                "operation": "getAll",
                "additionalFields": {
                    "inChannel": "={{$node[\"Greetings\"].parameter[\"channelId\"]}}"
                }
            },
            "credentials": {
                "mattermostApi": "Mattermost Cred"
            },
            "typeVersion": 1,
            "id": "b91f438f-1057-46a8-bc41-c457a039f2fa"
        },
        {
            "name": "Send calendar invites",
            "type": "n8n-nodes-base.googleCalendar",
            "position": [
                1250,
                400
            ],
            "parameters": {
                "end": "2020-12-17T18:38:49.000Z",
                "start": "2020-12-17T18:08:49.000Z",
                "calendar": "Enter Your Google Calendar",
                "additionalFields": {
                    "summary": "n8n coffee catchup",
                    "attendees": [
                        "={{$node[\"Divide into groups\"].json[\"groupsEmail\"].join(',')}}"
                    ],
                    "guestsCanModify": true,
                    "conferenceDataUi": {
                        "conferenceDataValues": {
                            "conferenceSolution": "hangoutsMeet"
                        }
                    }
                }
            },
            "credentials": {
                "googleCalendarOAuth2Api": "Google Calendar Cred"
            },
            "typeVersion": 1,
            "id": "257651c7-b341-4b1c-b16b-bf35f07ef986"
        }
    ],
    "connections": {
        "Greetings": {
            "main": [
                [
                    {
                        "node": "Employees in coffee chat channel",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        },
        "Divide into groups": {
            "main": [
                [
                    {
                        "node": "Announce groups",
                        "type": "main",
                        "index": 0
                    },
                    {
                        "node": "Send calendar invites",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        },
        "Weekly trigger on monday": {
            "main": [
                [
                    {
                        "node": "Greetings",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        },
        "Employees in coffee chat channel": {
            "main": [
                [
                    {
                        "node": "Divide into groups",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        }
    },
    "n8n_version": "1.5.0"
}

Requirements