Track new lifetime software deals on AppSumo automatically

flowchart TD trig(["daily at set time"]):::trigtime s0["Fetch AppSumo listings"]:::task s1[["Extract deal details"]]:::mi s2["Filter by interest"]:::task s3["Check if deal tracked"]:::task trig --> s0 s0 -->|"one per each deal listed"| s1 s1 --> s2 s2 --> s3 gx{"× is deal already tracked"}:::gate s3 --> gx p00["Add new row"]:::task gx -->|"New deal"| p00 p10["Update existing row"]:::task gx -->|"Existing deal"| p10 p00 --> out p10 --> out out[/"Up to date deals spreadsheet"/]:::out pay{{"Catch new deals before they expire"}}:::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