Import products from a spreadsheet into Shopify automatically

flowchart TD trig(("user runs product import")):::human s0[["read product data from sheet"]]:::mi s1["group products detect variants"]:::task s2["create or update shopify product"]:::svc trig --> s0 s0 --> s1 gx{"× product already exists"}:::gate s1 --> gx p00["update listing"]:::task gx -->|"existing product"| p00 p10["create listing"]:::task gx -->|"new product"| p10 jn{"○ shopify catalog updated"}:::gate p00 --> jn p10 --> jn jn --> s2 out[/"shopify catalog populated with variants"/]:::out pay{{"bulk catalog setup with no manual entry"}}:::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