Translate and explain song lyrics through a Telegram bot

flowchart TD trig>"user sends lyrics link command"]:::trig s0["download and clean lyrics page"]:::task s1["reply in telegram with result"]:::svc trig --> s0 gx{"× which request type was sent"}:::gate s0 --> gx p00["ai translates lyrics"]:::task gx -->|"translate"| p00 p10["ai summarizes lyrics"]:::task gx -->|"summarize"| p10 p20["ai extracts vocabulary list"]:::task gx -->|"vocabulary"| p20 jn{"○ reply in telegram"}:::gate p00 --> jn p10 --> jn p20 --> jn jn --> s1 out[/"telegram reply with lyrics breakdown"/]:::out pay{{"instant language learning from music"}}:::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