Automatically delete spam or repeat messages from Discord channels

flowchart TD trig(["scheduled channel scan"]):::trigtime s0["fetch channel messages"]:::task s1[["check message against rules"]]:::mi s2["delete matching message"]:::task s3["wait if rate limited"]:::task trig --> s0 s0 -->|"one per each message in the channel"| s1 s1 --> s2 s2 --> s3 lp{"deletion succeeds"}:::gate s3 --> lp lp -. "retry after rate limit" .-> s2 lp -->|"finished"| out out[/"spam messages deleted"/]:::out pay{{"clean channel without manual moderation"}}:::pay out --> pay s2 -. "retries on failure" .-> s2 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