"""Tests for write/mkdir/delete filesystem tools (Phase 6)."""

from pathlib import Path

import pytest

from app.models.config import AppConfig, load_config
from app.models.tool_call import ToolResultStatus
from app.tools.filesystem import DeleteFileTool, MakeDirTool, WriteFileTool


@pytest.fixture
def config() -> AppConfig:
    return load_config()


@pytest.fixture
def workspace(config: AppConfig) -> Path:
    return config.agent.workspace_root


@pytest.fixture
def tmp_workspace(tmp_path: Path, config: AppConfig) -> tuple[Path, AppConfig]:
    """Create a temporary workspace for write tests."""
    # Override workspace_root to tmp_path for isolation
    config.agent.workspace_root = tmp_path
    return tmp_path, config


# --- WriteFileTool ---


class TestWriteFileTool:
    def test_write_new_file(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = WriteFileTool(ws, cfg)
        result = tool.run("tc-1", {"file_path": "hello.txt", "content": "Hello, world!"})
        assert result.status == ToolResultStatus.SUCCESS
        assert "13 characters" in result.output
        assert (ws / "hello.txt").read_text() == "Hello, world!"

    def test_write_creates_parent_dirs(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = WriteFileTool(ws, cfg)
        result = tool.run("tc-2", {"file_path": "a/b/c/deep.txt", "content": "deep"})
        assert result.status == ToolResultStatus.SUCCESS
        assert (ws / "a" / "b" / "c" / "deep.txt").read_text() == "deep"

    def test_write_overwrites_existing(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        (ws / "existing.txt").write_text("old content")
        tool = WriteFileTool(ws, cfg)
        result = tool.run("tc-3", {"file_path": "existing.txt", "content": "new content"})
        assert result.status == ToolResultStatus.SUCCESS
        assert (ws / "existing.txt").read_text() == "new content"

    def test_write_path_traversal_blocked(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = WriteFileTool(ws, cfg)
        result = tool.run("tc-4", {"file_path": "../../etc/evil.txt", "content": "bad"})
        assert result.status == ToolResultStatus.ERROR
        assert "outside" in (result.error or "").lower()


# --- MakeDirTool ---


class TestMakeDirTool:
    def test_make_new_dir(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = MakeDirTool(ws, cfg)
        result = tool.run("tc-1", {"directory_path": "newdir"})
        assert result.status == ToolResultStatus.SUCCESS
        assert (ws / "newdir").is_dir()

    def test_make_nested_dirs(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = MakeDirTool(ws, cfg)
        result = tool.run("tc-2", {"directory_path": "a/b/c"})
        assert result.status == ToolResultStatus.SUCCESS
        assert (ws / "a" / "b" / "c").is_dir()

    def test_make_existing_dir_ok(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        (ws / "existing_dir").mkdir()
        tool = MakeDirTool(ws, cfg)
        result = tool.run("tc-3", {"directory_path": "existing_dir"})
        assert result.status == ToolResultStatus.SUCCESS

    def test_make_dir_over_file_fails(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        (ws / "afile").write_text("content")
        tool = MakeDirTool(ws, cfg)
        result = tool.run("tc-4", {"directory_path": "afile"})
        assert result.status == ToolResultStatus.ERROR
        assert "not a directory" in (result.error or "").lower()

    def test_make_dir_path_traversal_blocked(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = MakeDirTool(ws, cfg)
        result = tool.run("tc-5", {"directory_path": "../../outside"})
        assert result.status == ToolResultStatus.ERROR
        assert "outside" in (result.error or "").lower()


# --- DeleteFileTool ---


class TestDeleteFileTool:
    def test_delete_existing_file(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        (ws / "doomed.txt").write_text("bye")
        tool = DeleteFileTool(ws, cfg)
        result = tool.run("tc-1", {"file_path": "doomed.txt"})
        assert result.status == ToolResultStatus.SUCCESS
        assert not (ws / "doomed.txt").exists()

    def test_delete_nonexistent_file(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = DeleteFileTool(ws, cfg)
        result = tool.run("tc-2", {"file_path": "ghost.txt"})
        assert result.status == ToolResultStatus.ERROR
        assert "not found" in (result.error or "").lower()

    def test_delete_directory_refused(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        (ws / "adir").mkdir()
        tool = DeleteFileTool(ws, cfg)
        result = tool.run("tc-3", {"file_path": "adir"})
        assert result.status == ToolResultStatus.ERROR
        assert "directory" in (result.error or "").lower()

    def test_delete_path_traversal_blocked(self, tmp_workspace: tuple[Path, AppConfig]) -> None:
        ws, cfg = tmp_workspace
        tool = DeleteFileTool(ws, cfg)
        result = tool.run("tc-4", {"file_path": "../../etc/passwd"})
        assert result.status == ToolResultStatus.ERROR
        assert "outside" in (result.error or "").lower()