Publish or update a WordPress post on demand

flowchart TD trig(("content ready to publish")):::human s0["prepare post title and content"]:::task s1["determine new or existing post"]:::task trig --> s0 s0 --> s1 gx{"× new or existing post"}:::gate s1 --> gx p00["create new post"]:::task gx -->|"new post"| p00 p10["update existing post"]:::task gx -->|"existing post"| p10 jn{"○ post live"}:::gate p00 --> jn p10 --> jn jn --> out out[/"post published or updated"/]:::out pay{{"content live without logging in"}}:::pay 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