#!/bin/sh

# spell-checker:ignore (abbrevs/acronyms) HTML gcno llvm
# spell-checker:ignore (jargon) toolchain
# spell-checker:ignore (rust) Ccodegen Cinline Coverflow RUSTC RUSTFLAGS RUSTUP
# spell-checker:ignore (shell) OSID esac
# spell-checker:ignore (utils) genhtml grcov lcov readlink sccache uutils

BIN=uutils

FEATURES_OPTION="--features unix"

cd "$(dirname -- $(readlink -fm -- "$0"/..))"
echo "[ \"$PWD\" ]"

cargo clean

export CARGO_INCREMENTAL=0
export RUSTC_WRAPPER=""     ## NOTE: RUSTC_WRAPPER=='sccache' breaks code coverage calculations (uu_*.gcno files are not created during build)
export RUSTFLAGS="-Zprofile -Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zno-landing-pads"
export RUSTUP_TOOLCHAIN=nightly
cargo build ${FEATURES_OPTION}
cargo test --no-run ${FEATURES_OPTION}
cargo test --quiet ${FEATURES_OPTION}

export COVERAGE_REPORT_DIR="target/debug/coverage-nix"
rm -r "${COVERAGE_REPORT_DIR}" 2>/dev/null
mkdir -p "${COVERAGE_REPORT_DIR}"

# GRCOV_IGNORE_OPTION="--ignore build.rs --ignore \"/cargo/*\" --ignore \"/rustc/*\" --ignore \"${HOME}/.cargo/*\" --ignore \"${PWD}/rustc/*\""
export GRCOV_IGNORE_OPTION="--ignore build.rs --ignore \"/*\" --ignore \"[A-Za-z]:/*\""
## FixME: `grcov . ... ${GRCOV_IGNORE_OPTION}` fails, completely ignoring the contents of ${GRCOV_IGNORE_OPTION}
# * build LCOV coverage file
## FixME: grcov . --output-type lcov --output-path "${COVERAGE_REPORT_DIR}/../lcov.info" --branch ${GRCOV_IGNORE_OPTION}
grcov . --output-type lcov --output-path "${COVERAGE_REPORT_DIR}/../lcov.info" --branch --ignore build.rs --ignore '/*' --ignore '[A-Za-z]:/*'
# * build HTML
# -- use `genhtml` if available for display of additional branch coverage information
genhtml --version 2>/dev/null 1>&2
if [ $? -eq 0 ]; then
    genhtml "${COVERAGE_REPORT_DIR}/../lcov.info" --output-directory "${COVERAGE_REPORT_DIR}" --branch-coverage --function-coverage
else
    ## FixME: grcov . --output-type html --output-path "${COVERAGE_REPORT_DIR}" --branch ${GRCOV_IGNORE_OPTION}
    grcov . --output-type html --output-path "${COVERAGE_REPORT_DIR}" --branch --ignore build.rs --ignore '/*' --ignore '[A-Za-z]:/*'
fi
if [ $? -ne 0 ]; then exit 1 ; fi

case ";$OSID_tags;" in
    *";wsl;"* ) powershell.exe -c "${COVERAGE_REPORT_DIR}"/index.html ;;
    * ) xdg-open --version >/dev/null 2>&1 && xdg-open "${COVERAGE_REPORT_DIR}"/index.html || echo "report available at '\"${COVERAGE_REPORT_DIR}\"/index.html'" ;;
esac ;