Task: Send tweets every minute to Mattermost

n8n workflow JSON:
{"id":"1","name":"Twitter notifications","nodes":[{"name":"Twitter","type":"n8n-nodes-base.twitter","position":[610,260],"parameters":{"operation":"search","searchText":"n8n_io","additionalFields":{"resultType":"recent"}},"credentials":{"twitterOAuth1Api":"Twitter"},"typeVersion":1},{"name":"Cron","type":"n8n-nodes-base.cron","position":[410,260],"parameters":{"triggerTimes":{"item":[{"mode":"everyMinute"}]}},"typeVersion":1},{"name":"Function","type":"n8n-nodes-base.function","position":[940,260],"parameters":{"functionCode":"const new_items = [];\nconst data = this.getWorkflowStaticData('node');\n\ndata.ids = data.ids || [];\n\nfor (var i=0; i<items.length; i++) {\n  if (data.ids.includes(items[i].json.id)) {\n    break;\n  } else {\n    new_items.push({json: {id: items[i].json.id, url: items[i].json.url, tweet: items[i].json.tweet, username: items[i].json.username, photo: items[i].json.photo, name: items[i].json.name, color: items[i].json.color}});\n  }\n}\n\ndata.ids = items.map(item => item.json.id)\nreturn new_items;\n"},"typeVersion":1},{"name":"Set","type":"n8n-nodes-base.set","position":[780,260],"parameters":{"values":{"number":[{"name":"id","value":"={{$node[\"Twitter\"].json[\"id\"]}}"}],"string":[{"name":"url","value":"=https://twitter.com/{{$node[\"Twitter\"].json[\"user\"][\"screen_name\"]}}/status/{{$node[\"Twitter\"].json[\"id_str\"]}}"},{"name":"tweet","value":"={{$node[\"Twitter\"].json[\"text\"]}}"},{"name":"username","value":"={{$node[\"Twitter\"].json[\"user\"][\"screen_name\"]}}"},{"name":"photo","value":"={{$node[\"Twitter\"].json[\"user\"][\"profile_image_url_https\"]}}"},{"name":"name","value":"={{$node[\"Twitter\"].json[\"user\"][\"name\"]}}"},{"name":"color","value":"={{$node[\"Twitter\"].json[\"user\"][\"profile_link_color\"]}}"}]},"options":{"dotNotation":true},"keepOnlySet":true},"typeVersion":1},{"name":"Mattermost","type":"n8n-nodes-base.mattermost","position":[1110,260],"parameters":{"message":"={{$node[\"Function\"].json[\"url\"]}}","channelId":"c81pcft85byeipbp3nptbmicah","attachments":[{"text":"={{$node[\"Function\"].json[\"tweet\"]}}","color":"=#{{$node[\"Function\"].json[\"color\"]}}","author_icon":"={{$node[\"Function\"].json[\"photo\"]}}","author_link":"=https://twitter.com/{{$node[\"Function\"].json[\"username\"]}}","author_name":"={{$node[\"Function\"].json[\"name\"]}} ({{$node[\"Function\"].json[\"username\"]}})"}],"otherOptions":{}},"credentials":{"mattermostApi":"Mattermost"},"typeVersion":1}],"settings":{},"connections":{"Set":{"main":[[{"node":"Function","type":"main","index":0}]]},"Cron":{"main":[[{"node":"Twitter","type":"main","index":0}]]},"Twitter":{"main":[[{"node":"Set","type":"main","index":0}]]},"Function":{"main":[[{"node":"Mattermost","type":"main","index":0}]]}}}