icp.yaml

canisters:
  - name: backend
    build:
      steps:
        - type: script
          commands:
            # wasi2ic and wasm-opt are installed on first run if not present.
            - which wasi2ic || cargo install wasi2ic
            - which wasm-opt || cargo install wasm-opt
            # Enable Wasm SIMD instructions for faster Tract inference.
            - export RUSTFLAGS="${RUSTFLAGS} -C target-feature=+simd128"
            # Compile to wasm32-wasip1 (WASI) so Tract can use POSIX file I/O.
            - cargo build --package backend --target wasm32-wasip1 --release
            # wasi2ic rewrites WASI syscalls to IC system API calls.
            - wasi2ic ./target/wasm32-wasip1/release/backend.wasm "$ICP_WASM_OUTPUT_PATH"
            # Optimise the WASM binary size and enable SIMD + bulk-memory proposals.
            - wasm-opt -Os --enable-simd --enable-bulk-memory -o "$ICP_WASM_OUTPUT_PATH" "$ICP_WASM_OUTPUT_PATH"
            # Embed the Candid interface as public WASM metadata.
            - ic-wasm "$ICP_WASM_OUTPUT_PATH" -o "$ICP_WASM_OUTPUT_PATH" metadata candid:service -f backend/backend.did -v public --keep-name-section
    sync:
      steps:
        - type: script
          commands:
            # Downloads/generates ONNX models and uploads them to the canister.
            # Skipped automatically if models are already loaded (e.g. on redeployment).
            - bash upload-models-to-canister.sh

  - name: frontend
    recipe:
      type: "@dfinity/static-site@v0.3.1"
      configuration:
        dir: frontend/dist
        build:
          - npm install --prefix frontend
          - npm run build --prefix frontend