SRC_DIR := "src"
PATCH_DIR := "patches"
RUST_SRC := `rustc --print sysroot` / "lib/rustlib/src/rust/library/std/src"

patch-std:
    @echo "Start patching the std..."
    @find {{ PATCH_DIR }} -type f | while read -r patch_file; do \
        relative_path="${patch_file#{{ PATCH_DIR }}/}"; \
        target_file="${relative_path%.sed}.rs"; \
        if [ -f "{{ SRC_DIR }}/$target_file" ]; then \
            echo " [SED] $target_file"; \
            sed -i -f "$patch_file" "{{ SRC_DIR }}/$target_file"; \
        else \
            echo "⚠ [WARN] target doesn't exist: $target_file"; \
        fi; \
    done
    @echo "✅ Patching done."

update-std:
    @just setup-std
    @just patch-std

cp_std path:
    @echo "Copying {{ path }}"
    @mkdir {{ "src" / parent_directory(path) }} -p
    @cp {{ RUST_SRC / path }} {{ "src" / path }}
    @sed -i -f patches.sed {{ "src" / path }}

setup-std:
    @# Not copied : sys/mod.rs, io.rs, error.rs, thread.rs, sync.rs
    # @just cp_std "process.rs"
    # @just cp_std "fs.rs"
    # @just cp_std "collections/mod.rs"
    @just cp_std "env.rs"
    @just cp_std "time.rs"
    @just cp_std "os/mod.rs"
    @just cp_std "os/raw/mod.rs"
    @just cp_std "os/raw/tests.rs"
    @just cp_std "bstr.rs"
    @just cp_std "panicking.rs"
    @just cp_std "panic.rs"
    @just cp_std "collections/hash/map.rs"
    @just cp_std "collections/hash/set.rs"
    @just cp_std "collections/hash/mod.rs"
    @just cp_std "io/error.rs"
    @just cp_std "io/error/repr_bitpacked.rs"
    @just cp_std "io/error/repr_unpacked.rs"
    @just cp_std "io/error/tests.rs"
    @just cp_std "io/cursor.rs"
    @just cp_std "io/cursor/tests.rs"
    @just cp_std "io/prelude.rs"
    @just cp_std "io/impls.rs"
    @just cp_std "io/impls/tests.rs"
    @just cp_std "io/tests.rs"
    @just cp_std "io/util.rs"
    @just cp_std "io/util/tests.rs"
    @just cp_std "io/copy.rs"
    @just cp_std "io/copy/tests.rs"
    @just cp_std "io/pipe.rs"
    @just cp_std "io/pipe/tests.rs"
    @just cp_std "io/stdio.rs"
    @just cp_std "io/buffered/mod.rs"
    @just cp_std "io/buffered/bufreader.rs"
    @just cp_std "io/buffered/bufreader/buffer.rs"
    @just cp_std "io/buffered/bufwriter.rs"
    @just cp_std "io/buffered/linewriter.rs"
    @just cp_std "io/buffered/linewritershim.rs"
    @just cp_std "sync/once.rs"
    @just cp_std "sync/once_lock.rs"
    @just cp_std "sync/lazy_lock.rs"
    @just cp_std "sync/nonpoison.rs"
    @just cp_std "sync/nonpoison/condvar.rs"
    @just cp_std "sync/nonpoison/mutex.rs"
    @just cp_std "sync/nonpoison/rwlock.rs"
    @just cp_std "sync/poison.rs"
    @just cp_std "sync/poison/condvar.rs"
    @just cp_std "sync/poison/mutex.rs"
    @just cp_std "sync/poison/rwlock.rs"
    @just cp_std "sync/barrier.rs"
    @just cp_std "sync/reentrant_lock.rs"
    @just cp_std "sync/mpsc.rs"
    @just cp_std "sync/mpmc/mod.rs"
    @just cp_std "sync/mpmc/array.rs"
    @just cp_std "sync/mpmc/context.rs"
    @just cp_std "sync/mpmc/counter.rs"
    @just cp_std "sync/mpmc/error.rs"
    @just cp_std "sync/mpmc/list.rs"
    @just cp_std "sync/mpmc/select.rs"
    @just cp_std "sync/mpmc/tests.rs"
    @just cp_std "sync/mpmc/utils.rs"
    @just cp_std "sync/mpmc/waker.rs"
    @just cp_std "sync/mpmc/zero.rs"
    @just cp_std "hash/mod.rs"
    @just cp_std "hash/random.rs"
    @just cp_std "num/mod.rs"
    @just cp_std "ffi/c_str.rs"
    @just cp_std "ffi/mod.rs"
    @just cp_std "ffi/os_str.rs"
    @just cp_std "ffi/os_str/tests.rs"
    @just cp_std "thread/local.rs"
    @just cp_std "thread/thread.rs"
    @just cp_std "thread/id.rs"
    @just cp_std "thread/main_thread.rs"
    @just cp_std "thread/current.rs"
    @just cp_std "thread/join_handle.rs"
    @just cp_std "thread/functions.rs"
    @just cp_std "thread/lifecycle.rs"
    @just cp_std "thread/builder.rs"
    @just cp_std "thread/scoped.rs"
    @just cp_std "thread/spawnhook.rs"
    @just cp_std "sys/exit.rs"
    @just cp_std "sys/env_consts.rs"
    @just cp_std "sys/configure_builtins.rs"
    @just cp_std "sys/cmath.rs"
    @just cp_std "sys/process/mod.rs"
    @just cp_std "sys/process/env.rs"
    @just cp_std "sys/args/mod.rs"
    @just cp_std "sys/args/unsupported.rs"
    @just cp_std "sys/pal/mod.rs"
    @just cp_std "sys/pal/unsupported/mod.rs"
    @just cp_std "sys/pal/unsupported/common.rs"
    @just cp_std "sys/pal/unsupported/os.rs"
    @just cp_std "sys/sync/condvar/mod.rs"
    @just cp_std "sys/sync/condvar/no_threads.rs"
    @just cp_std "sys/sync/mutex/mod.rs"
    @just cp_std "sys/sync/mutex/no_threads.rs"
    @just cp_std "sys/sync/once/mod.rs"
    @just cp_std "sys/sync/once/no_threads.rs"
    @just cp_std "sys/sync/rwlock/mod.rs"
    @just cp_std "sys/sync/rwlock/no_threads.rs"
    @just cp_std "sys/sync/thread_parking/mod.rs"
    @just cp_std "sys/sync/thread_parking/unsupported.rs"
    @just cp_std "sys/thread/mod.rs"
    @just cp_std "sys/thread/unsupported.rs"
    @just cp_std "sys/thread_local/no_threads.rs"
    @just cp_std "sys/thread_local/os.rs"
    @just cp_std "sys/thread_local/mod.rs"
    @just cp_std "sys/time/mod.rs"
    @just cp_std "sys/time/unsupported.rs"
    @just cp_std "sys/random/mod.rs"
    @just cp_std "sys/random/unsupported.rs"
    @just cp_std "sys/env/mod.rs"
    @just cp_std "sys/env/common.rs"
    @just cp_std "sys/env/unsupported.rs"
    @just cp_std "sys/os_str/mod.rs"
    @just cp_std "sys/os_str/bytes.rs"
    @just cp_std "sys/os_str/bytes/tests.rs"
    @just cp_std "sys/path/mod.rs"
    @just cp_std "sys/path/unix.rs"
    @just cp_std "sys/fs/mod.rs"
    @just cp_std "sys/fs/common.rs"
    @just cp_std "sys/fs/unsupported.rs"
    @just cp_std "sys/io/error/generic.rs"
    @just cp_std "sys/io/io_slice/unsupported.rs"
    @just cp_std "sys/io/is_terminal/unsupported.rs"
    @just cp_std "sys/io/kernel_copy/mod.rs"
    @just cp_std "sys/io/mod.rs"
    @just cp_std "sys/io/error/mod.rs"
    @just cp_std "sys/pipe/mod.rs"
    @just cp_std "sys/pipe/unsupported.rs"
    @just cp_std "sys/stdio/mod.rs"
    @just cp_std "sys/stdio/unsupported.rs"
    @just cp_std "sys/alloc/mod.rs"
    @just cp_std "sys/backtrace.rs"
    @just cp_std "alloc.rs"
    @# Copied but edited for the moment
    # @just cp_std "sys/process/unsupported.rs"
    # @just cp_std "path.rs"