"""Unit tests for devx.tools.check_pyproject_deps."""

from pathlib import Path

from click.testing import CliRunner

from devx.tools.check_pyproject_deps import check_deps, cli


class TestCheckDeps:
    def test_no_issues_when_all_documented(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
# HTTP client
"requests>=2.0"
# CLI framework
"click>=8.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert issues == []

    def test_finds_undocumented_dependency(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
# HTTP client
"requests>=2.0"
"click>=8.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert len(issues) == 1
        assert "click" in issues[0]

    def test_finds_multiple_undocumented(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
"requests>=2.0"
"click>=8.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert len(issues) == 2

    def test_handles_optional_dependencies(self, tmp_path: Path) -> None:
        content = """\
[project.optional-dependencies]
ci = [
    # Test runner
    "pytest>=8",
    "pytest-cov>=4",
]
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert len(issues) == 1
        assert "pytest-cov" in issues[0]

    def test_returns_file_not_found_for_missing_file(self, tmp_path: Path) -> None:
        issues = check_deps(tmp_path / "nonexistent.toml")
        assert len(issues) == 1
        assert "not found" in issues[0]

    def test_empty_deps_section_no_issues(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert issues == []

    def test_skips_non_deps_sections(self, tmp_path: Path) -> None:
        content = """\
[project]
name = "test"
version = "0.1.0"

[project.dependencies]
# HTTP
"requests>=2.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert issues == []

    def test_handles_dash_prefixed_deps(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
# HTTP client
-requests>=2.0
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert issues == []

    def test_empty_lines_in_deps_section(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]

# HTTP client
"requests>=2.0"

# CLI
"click>=8.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        assert issues == []

    def test_non_dep_non_comment_line_resets_prev(self, tmp_path: Path) -> None:
        # A line that's not a comment, not a dep, not empty — resets prev_was_comment
        content = """\
[project.dependencies]
# Comment
ci = [
"requests>=2.0",
]
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        # "requests" is preceded by a comment, but the `ci = [` line resets prev_was_comment
        # Actually `ci = [` doesn't start with - or ", so it hits the else branch
        assert len(issues) == 1

    def test_section_transition_exits_deps(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
# HTTP
"requests>=2.0"

[project.optional-dependencies]
# Test runner
"pytest>=8"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        # Both deps are documented
        assert issues == []

    def test_deps_after_other_section_not_checked(self, tmp_path: Path) -> None:
        content = """\
[project]
name = "test"

[project.dependencies]
# Documented
"requests>=2.0"

[tool.ruff]
line-length = 120
"undocumented-dep>=1.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        issues = check_deps(f)
        # The "undocumented-dep" is in [tool.ruff], not a deps section
        assert issues == []


class TestCli:
    def test_passes_when_all_documented(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
# HTTP client
"requests>=2.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        runner = CliRunner()
        with __import__("contextlib").chdir(tmp_path):
            result = runner.invoke(cli, [])
        assert result.exit_code == 0
        assert "Passed" in result.output

    def test_fails_when_undocumented(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
"requests>=2.0"
"""
        f = tmp_path / "pyproject.toml"
        f.write_text(content)
        runner = CliRunner()
        with __import__("contextlib").chdir(tmp_path):
            result = runner.invoke(cli, [])
        assert result.exit_code != 0
        assert "FAILED" in result.output

    def test_custom_file_option(self, tmp_path: Path) -> None:
        content = """\
[project.dependencies]
# Documented
"requests>=2.0"
"""
        f = tmp_path / "custom.toml"
        f.write_text(content)
        runner = CliRunner()
        result = runner.invoke(cli, ["--file", str(f)])
        assert result.exit_code == 0