{ pkgs ? import <nixpkgs> {} }:

(pkgs.buildFHSEnv {
  name = "prisma-v7-shell";

  targetPkgs = pkgs: (with pkgs; [
    nodejs
    pnpm
    openssl
    zlib
  ]);

  runScript = "bash";

  profile = ''
    # 1. Define the correct version and commit for Prisma 7.2.0
    PRISMA_VERSION="7.2.0"
    COMMIT="0c8ef2ce45c83248ab3df073180d5eda9e8be7a3"
    
    # 2. Setup cache directory
    CACHE_DIR="$HOME/.cache/prisma-nix-fix/$PRISMA_VERSION"
    mkdir -p "$CACHE_DIR"

    # 3. Only download schema-engine (REQUIRED for migrations)
    #    Prisma 7 does not use the Rust query-engine by default, so we skip it to avoid 404s.
    if [ ! -f "$CACHE_DIR/schema-engine" ]; then
      echo ">> NixOS Fix: Downloading schema-engine for Prisma $PRISMA_VERSION..."
      # Use -f to fail silently if the file is missing (though it shouldn't be for schema-engine)
      curl -fL "https://binaries.prisma.sh/all_commits/$COMMIT/debian-openssl-3.0.x/schema-engine.gz" | gunzip > "$CACHE_DIR/schema-engine"
      chmod +x "$CACHE_DIR/schema-engine"
    fi

    # 4. Export the specific variable for the Schema Engine
    export PRISMA_SCHEMA_ENGINE_BINARY="$CACHE_DIR/schema-engine"
    
    # 5. UNSET the query engine variables.
    #    Prisma 7 will fall back to its internal TypeScript engine (which works fine in FHS).
    #    If we leave these set to broken files (from the 404s), Prisma crashes.
    unset PRISMA_QUERY_ENGINE_BINARY
    unset PRISMA_QUERY_ENGINE_LIBRARY
    unset PRISMA_FMT_BINARY
    
    echo "------------------------------------------------------------"
    echo "  Prisma 7.x Shell (NixOS)"
    echo "  - Schema Engine: Pinned to Debian OpenSSL 3.0.x"
    echo "  - Query Engine:  Using Prisma Default (TypeScript)"
    echo "------------------------------------------------------------"
  '';
}).env