Turn GitLab webhook notifications on or off from a simple form

flowchart TD trig(("repository link submitted via form")):::human s0["Check for existing webhook"]:::svc s1["Update webhook status"]:::svc trig --> s0 gx{"× webhook already exists"}:::gate s0 --> gx p00["Remove webhook"]:::task gx -->|"webhook exists"| p00 p10["Create webhook"]:::task gx -->|"no webhook found"| p10 jn{"○ Webhook toggled"}:::gate p00 --> jn p10 --> jn jn --> s1 out[/"Webhook connected or removed automatically"/]:::out pay{{"Saves time and avoids settings mistakes"}}:::pay s1 --> 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