"""Steps for git_worktree_apply.feature."""

from __future__ import annotations

import os
import shutil
import subprocess
import tempfile
from pathlib import Path

from behave import given, then, when

_PLAN_ID = "01TEST00000000000000000099"
_BRANCH = f"cleveragents/plan-{_PLAN_ID}"


def _git(args: list[str], cwd: str) -> subprocess.CompletedProcess[str]:
    return subprocess.run(
        ["git", *args],
        cwd=cwd,
        capture_output=True,
        text=True,
        check=True,
        timeout=10,
    )


# ── Given ──────────────────────────────────────────────────


@given("a temp git project with 1 file for wt_apply")
def step_git_project(context: object) -> None:
    d = tempfile.mkdtemp(prefix="wt-apply-")
    context.add_cleanup(shutil.rmtree, d, True)
    _git(["init", "-q"], d)
    _git(["config", "user.name", "T"], d)
    _git(["config", "user.email", "t@t"], d)
    _git(["config", "commit.gpgsign", "false"], d)
    Path(d, "main.py").write_text("print('hello')\n")
    _git(["add", "."], d)
    _git(["commit", "-q", "-m", "init"], d)
    context.wt_apply_project = d
    context.wt_apply_sandbox = None
    context.wt_apply_sandbox_obj = None


@given("a temp non-git directory with 1 file for wt_apply")
def step_non_git_dir(context: object) -> None:
    d = tempfile.mkdtemp(prefix="wt-apply-flat-")
    context.add_cleanup(shutil.rmtree, d, True)
    sandbox = os.path.join(d, "sandbox")
    os.makedirs(sandbox)
    Path(sandbox, "result.txt").write_text("output\n")
    context.wt_apply_project = d
    context.wt_apply_sandbox_flat = sandbox


# ── When ───────────────────────────────────────────────────


@when("I create a sandbox for the project for wt_apply")
@given("I create a sandbox for the project for wt_apply")
def step_create_sandbox(context: object) -> None:
    from cleveragents.infrastructure.sandbox.git_worktree import (
        GitWorktreeSandbox,
    )

    sandbox = GitWorktreeSandbox(
        resource_id="res-wt-apply",
        original_path=context.wt_apply_project,
    )
    ctx = sandbox.create(plan_id=_PLAN_ID)
    context.wt_apply_sandbox = ctx.sandbox_path
    context.wt_apply_sandbox_obj = sandbox
    context.add_cleanup(sandbox.cleanup)


@when("I write {filename:S} to the sandbox for wt_apply")
@given("I write {filename:S} to the sandbox for wt_apply")
def step_write_file(context: object, filename: str) -> None:
    filename = filename.strip('"')
    Path(context.wt_apply_sandbox, filename).write_text("# fixed\n")


@when("I commit the sandbox for wt_apply")
@given("I commit the sandbox for wt_apply")
def step_commit_sandbox(context: object) -> None:
    wt = context.wt_apply_sandbox
    _git(["add", "-A"], wt)
    _git(["commit", "-m", "test commit"], wt)


@when("I merge the sandbox branch into main for wt_apply")
def step_merge(context: object) -> None:
    repo = context.wt_apply_project
    _git(["merge", _BRANCH, "--no-edit", "-m", "merge test"], repo)


@when("I cleanup the sandbox for wt_apply")
def step_cleanup(context: object) -> None:
    context.wt_apply_sandbox_obj.cleanup()


@when("I copy files from sandbox to project for wt_apply")
def step_flat_copy(context: object) -> None:
    sandbox = context.wt_apply_sandbox_flat
    project = context.wt_apply_project
    for fname in os.listdir(sandbox):
        src = os.path.join(sandbox, fname)
        if os.path.isfile(src):
            shutil.copy2(src, os.path.join(project, fname))


# ── Then ───────────────────────────────────────────────────


@then("the sandbox path should be a directory for wt_apply")
def step_sandbox_is_dir(context: object) -> None:
    assert os.path.isdir(context.wt_apply_sandbox)


@then("the sandbox path should differ from the project path for wt_apply")
def step_sandbox_differs(context: object) -> None:
    assert context.wt_apply_sandbox != context.wt_apply_project


@then("the branch {branch_name:S} should exist for wt_apply")
def step_branch_exists(context: object, branch_name: str) -> None:
    branch_name = branch_name.strip('"')
    result = subprocess.run(
        ["git", "rev-parse", "--verify", f"refs/heads/{branch_name}"],
        cwd=context.wt_apply_project,
        capture_output=True,
        check=False,
        timeout=10,
    )
    assert result.returncode == 0, f"Branch {branch_name} does not exist"


@then("the branch {branch_name:S} should not exist for wt_apply")
def step_branch_not_exists(context: object, branch_name: str) -> None:
    branch_name = branch_name.strip('"')
    result = subprocess.run(
        ["git", "rev-parse", "--verify", f"refs/heads/{branch_name}"],
        cwd=context.wt_apply_project,
        capture_output=True,
        check=False,
        timeout=10,
    )
    assert result.returncode != 0, f"Branch {branch_name} still exists"


@then("{filename:S} should exist on branch {branch_name:S} for wt_apply")
def step_file_on_branch(context: object, filename: str, branch_name: str) -> None:
    filename = filename.strip('"')
    branch_name = branch_name.strip('"')
    result = subprocess.run(
        ["git", "ls-tree", "--name-only", branch_name],
        cwd=context.wt_apply_project,
        capture_output=True,
        text=True,
        check=True,
        timeout=10,
    )
    assert filename in result.stdout, (
        f"{filename} not found on {branch_name}: {result.stdout}"
    )


@then("{filename:S} should exist in the project root for wt_apply")
def step_file_in_root(context: object, filename: str) -> None:
    filename = filename.strip('"')
    assert os.path.isfile(os.path.join(context.wt_apply_project, filename))


@then("the sandbox path should not exist for wt_apply")
def step_sandbox_gone(context: object) -> None:
    assert not os.path.exists(context.wt_apply_sandbox)


@then("the project should have the copied file for wt_apply")
def step_flat_copy_result(context: object) -> None:
    assert os.path.isfile(os.path.join(context.wt_apply_project, "result.txt"))