Get a Telegram alert the moment an Amazon price drops

flowchart TD trig(["scheduled price check runs"]):::trigtime s0[("read tracked products")]:::store s1[["scrape current price"]]:::mi s2["compare to lowest price"]:::task trig --> s0 s0 -->|"one per each tracked product"| s1 s1 --> s2 gx{"× is this a new low"}:::gate s2 --> gx p00["update spreadsheet"]:::task gx -->|"new low"| p00 p01["send telegram alert"]:::task p00 --> p01 p10["no action taken"]:::task gx -->|"not a new low"| p10 p01 --> out p10 --> out out[/"telegram alert on price drop"/]:::out pay{{"never miss a deal"}}:::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