import logging
import os
import shlex


def install_bumper(ctx):
    runcmd_prepend_to_path = globals()["runcmd_prepend_to_path"]
    srcdir = globals()["srcdir"]

    # Add the directory with built Rust binaries to the path.
    runcmd_prepend_to_path(ctx, dirname=os.path.join(srcdir, "target", "debug"))


def git_init_and_commit_everything(ctx, dirname=None):
    runcmd_run = globals()["runcmd_run"]
    runcmd_run(ctx, ["git", "init", dirname])
    runcmd_run(ctx, ["git", "add", "."], cwd=dirname)
    runcmd_run(ctx, ["git", "commit", "-minitial"], cwd=dirname)


def remember_HEAD(ctx, dirname=None, varname=None):
    runcmd_run = globals()["runcmd_run"]
    runcmd_get_stdout = globals()["runcmd_get_stdout"]
    runcmd_run(ctx, ["git", "rev-parse", "HEAD"], cwd=dirname)
    ctx[varname] = runcmd_get_stdout(ctx).strip()


def run_command_in_directory(ctx, dirname=None, argv0=None, args=None):
    runcmd_run = globals()["runcmd_run"]
    runcmd_exit_code_is_zero = globals()["runcmd_exit_code_is_zero"]

    argv = [shlex.quote(argv0)] + shlex.split(args)
    runcmd_run(ctx, argv, cwd=dirname)
    runcmd_exit_code_is_zero(ctx)


def git_tag_points_at(ctx, dirname=None, tag=None, varname=None):
    runcmd_run = globals()["runcmd_run"]
    runcmd_get_stdout = globals()["runcmd_get_stdout"]
    runcmd_exit_code_is_zero = globals()["runcmd_exit_code_is_zero"]

    runcmd_run(ctx, ["git", "show", "--raw", tag], cwd=dirname)
    runcmd_exit_code_is_zero(ctx)

    output = runcmd_get_stdout(ctx)
    commit = ctx[varname]
    logging.debug(f"expecting tag {tag} to point at {commit}")
    logging.debug(f"tag: {output!r}")
    assert output.startswith(f"tag {tag}\n")
    assert f"\ncommit {commit}" in output