Turn WhatsApp receipt photos into an automatic expense log

flowchart TD trig>"message received via WhatsApp"]:::trig s0["check message type"]:::task s1["extract merchant amount and date"]:::task s2[("log expense to spreadsheet")]:::store trig --> s0 s1 --> s2 gx{"× photo or report request"}:::gate s0 --> gx p00["extract expense details"]:::task gx -->|"receipt photo"| p00 p01["log to spreadsheet by category"]:::task p00 --> p01 p10["send spending summary back"]:::task gx -->|"report request"| p10 p01 --> s1 p10 --> s1 out[/"expenses logged and summary available"/]:::out pay{{"track spending without manual entry"}}:::pay s2 --> 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