Track competitor prices daily and get alerted when they change

flowchart TD trig(["runs once daily"]):::trigtime s0[("read competitor list")]:::store s1[["visit product page"]]:::mi s2["compare to last price"]:::task trig --> s0 s0 -->|"one per one per competitor product page"| s1 s1 --> s2 gx{"× did price change"}:::gate s2 --> gx p00["send telegram alert"]:::task gx -->|"price changed"| p00 p01["log new price"]:::task p00 --> p01 p10["take no action"]:::task gx -->|"no change"| p10 p01 --> out p10 --> out out[/"price change alerts sent"/]:::out pay{{"react fast to competitor pricing"}}:::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