Publish scheduled social posts automatically from a spreadsheet

flowchart TD trig(["scheduled check for ready posts"]):::trigtime s0["find next ready post"]:::task s1["pull media file"]:::task s2["upload media"]:::svc s3[("update spreadsheet status")]:::store trig --> s0 s0 --> s1 s1 --> s2 gx{"+ which platforms to publish to"}:::gate s2 --> gx p00["publish to tiktok"]:::task gx -->|"tiktok"| p00 p10["publish to instagram"]:::task gx -->|"instagram"| p10 p20["publish to facebook"]:::task gx -->|"facebook"| p20 jn{"+ all platforms published"}:::gate p00 --> jn p10 --> jn p20 --> jn jn --> s3 out[/"posts published across all platforms"/]:::out pay{{"one system handles every platform"}}:::pay s3 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff