#!/bin/sh
#
# Pre-commit hook to generate Rust documentation
#
# This hook runs the rustdoc.sh script to update documentation
# before each commit.

echo "Running rustdoc generation..."

# Get the repository root
REPO_ROOT="$(git rev-parse --show-toplevel)"

# iteralte all directories thst contain a Cargo.toml file
for dir in $(find "$REPO_ROOT" -name "Cargo.toml" -exec dirname {} \;); do
    echo "Generating documentation in $dir"

    # cargotoml conatains workspace members, skip this directory
    # HAS_MEMBERS=$(grep -c '\[workspace\]' "$dir/Cargo.toml")
    # if [ "$HAS_MEMBERS" -gt 0 ]; then
    #     echo "Skipping workspace directory $dir"
    #     continue
    # fi

    # get package name from Cargo.toml using cargo metadata
    PACKAGE_NAME=$(cargo metadata --format-version 1 --no-deps --manifest-path "$dir/Cargo.toml" | jq -r '.packages[0].name')
    if [ -z "$PACKAGE_NAME" ]; then
        echo "Could not determine package name for $dir"
        continue
    fi

    # go into the directory
    cd "$dir" || continue

    # generate the documentation using rustdoc-md
    cargo install rustdoc-md --git https://github.com/qitechgmbh/rustdoc-md --rev 6dc34f9c9d878799d9c1b4f2d2bcbb1f2757ede7
    RUSTC_BOOTSTRAP=1 RUSTDOCFLAGS="-Z unstable-options --output-format json" cargo doc --no-deps
    rustdoc-md --path "${REPO_ROOT}/target/doc/${PACKAGE_NAME}.json" --output ./rustdoc.md

    # stage the generated documentation file
    git add "rustdoc.md"

    # go back to the repository root
    cd "$REPO_ROOT" || exit
done

git rm --cached rustdoc.md 2>/dev/null
rm rustdoc.md

exit 0