Chat assistant that understands text, images, and PDFs

flowchart TD trig(("user starts a conversation")):::human s0(("start conversation")):::human s1["answer using message and file"]:::svc s2[("remember conversation history")]:::store trig --> s0 s1 --> s2 gx{"× was a file uploaded"}:::gate s0 --> gx p00["ai reads image or pdf"]:::task gx -->|"file included"| p00 p10["proceed with text only"]:::task gx -->|"no file"| p10 jn{"○ answer question"}:::gate p00 --> jn p10 --> jn jn --> s1 out[/"ai answers about uploaded files"/]:::out pay{{"reduce manual support handling"}}:::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