use std::{env, fs::File, io::Write, path::Path};

#[test]
fn debug() {
    if let Ok(path) = env::var("LD_LIBRARY_PATH") {
        let mut dump =
            File::create(Path::new("tests/debug.sh")).expect("could not create dump file");

        #[cfg(unix)]
        {
            use std::os::unix::fs::PermissionsExt;
            let metadata = dump
                .metadata()
                .expect("could not access dump file metadata");
            let mut permissions = metadata.permissions();
            permissions.set_mode(0o755);
            let _ = dump.set_permissions(permissions);
        }

        let _ = writeln!(
            dump,
            r#"#!/usr/bin/env sh
export PATH=./target/debug:$PATH
export LD_LIBRARY_PATH={}
export RUST_BACKTRACE=full
export RUST_SEMVER_CRATE_VERSION=1.0.0

if [ "$1" = "-s" ]; then
    shift
    arg_str="set args --crate-type=lib $(cargo semver -d "$@") tests/helper/test.rs"
else
    if [ "$1" != "-S" ]; then
        rustc --crate-type=lib -o "$1/libold.rlib" "$1/old.rs"
        rustc --crate-type=lib -o "$1/libnew.rlib" "$1/new.rs"
        del=1
    else
        del=0
        shift
    fi
    arg_str="set args --crate-type=lib --extern old=$1/libold.rlib --extern new=$1/libnew.rlib tests/helper/test.rs"
fi

export RUST_LOG=debug

if [ -n "$RUST_SRC_PATH" ]; then
    src_str="set substitute-path /checkout $RUST_SRC_PATH"
else
    src_str="set substitute-path /checkout $(rustc --print sysroot)/lib/rustlib/src/rust"
fi

rust-gdb ./target/debug/rust-semverver -iex "$arg_str" -iex "$src_str"

if [ $del = 1 ]; then
    rm "$1/lib*.rlib"
fi"#,
            path
        );
    }
}