"""Tests for CLI validate command."""

import json
from pathlib import Path

from typer.testing import CliRunner

from veritext.cli.main import app

runner = CliRunner()


class TestValidateInline:
    def test_validate_inline_basic(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "The quick brown fox jumps",
                "-r",
                "The quick brown fox jumps",
                "-m",
                "bleu",
            ],
        )
        assert result.exit_code == 0
        assert "bleu4" in result.stdout

    def test_validate_inline_with_rouge(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "hello world today",
                "-r",
                "hello world here",
                "-m",
                "rouge",
            ],
        )
        assert result.exit_code == 0
        assert "rouge_l" in result.stdout

    def test_validate_inline_with_lexical(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "hello world",
                "-r",
                "hello everyone",
                "-m",
                "lexical",
            ],
        )
        assert result.exit_code == 0
        assert "jaccard" in result.stdout
        assert "token_overlap" in result.stdout

    def test_validate_inline_json_output(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "hello world today",
                "-r",
                "hello world today",
                "-m",
                "bleu",
                "-o",
                "json",
            ],
        )
        assert result.exit_code == 0
        data = json.loads(result.stdout)
        assert "bleu4" in data

    def test_validate_inline_simple_output(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "hello world today",
                "-r",
                "hello world today",
                "-m",
                "rouge",
                "-o",
                "simple",
            ],
        )
        assert result.exit_code == 0
        assert "rouge_l:" in result.stdout

    def test_validate_inline_missing_reference(self) -> None:
        result = runner.invoke(
            app,
            ["validate", "hello world", "-m", "bleu"],
        )
        assert result.exit_code == 1
        assert "Error" in result.stdout

    def test_validate_inline_invalid_metric(self) -> None:
        result = runner.invoke(
            app,
            ["validate", "hello", "-r", "world", "-m", "invalid_metric"],
        )
        assert result.exit_code == 1
        assert "Unknown metrics" in result.stdout


class TestValidateFile:
    def test_validate_file_basic(self, tmp_path: Path) -> None:
        data_file = tmp_path / "data.jsonl"
        data_file.write_text(
            '{"candidate": "hello world today", "reference": "hello world today"}\n'
            '{"candidate": "foo bar baz", "reference": "foo bar baz"}'
        )

        result = runner.invoke(
            app,
            ["validate", "-f", str(data_file), "-m", "bleu"],
        )
        assert result.exit_code == 0
        assert "bleu4" in result.stdout
        assert "Evaluated 2 text pairs" in result.stdout

    def test_validate_file_not_found(self) -> None:
        result = runner.invoke(
            app,
            ["validate", "-f", "/nonexistent/file.jsonl", "-m", "bleu"],
        )
        assert result.exit_code == 1
        assert "Error" in result.stdout

    def test_validate_paired_files(self, tmp_path: Path) -> None:
        candidates_file = tmp_path / "candidates.jsonl"
        references_file = tmp_path / "references.jsonl"

        candidates_file.write_text(
            '{"text": "hello world today"}\n{"text": "foo bar baz"}'
        )
        references_file.write_text(
            '{"text": "hello world today"}\n{"text": "foo bar baz"}'
        )

        result = runner.invoke(
            app,
            [
                "validate",
                "-f",
                str(candidates_file),
                "-R",
                str(references_file),
                "-m",
                "bleu",
            ],
        )
        assert result.exit_code == 0
        assert "Evaluated 2 text pairs" in result.stdout


class TestValidateOptions:
    def test_validate_with_threshold(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "hello world today",
                "-r",
                "hello world today",
                "-m",
                "bleu",
                "-t",
                "0.5",
            ],
        )
        assert result.exit_code == 0
        # Table output should include Status column
        assert "Status" in result.stdout or "PASS" in result.stdout

    def test_validate_invalid_output_format(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "hello",
                "-r",
                "world",
                "-m",
                "bleu",
                "-o",
                "invalid",
            ],
        )
        assert result.exit_code == 1
        assert "Invalid output format" in result.stdout

    def test_validate_multiple_metrics(self) -> None:
        result = runner.invoke(
            app,
            [
                "validate",
                "The quick brown fox",
                "-r",
                "The quick brown fox",
                "-m",
                "bleu,rouge,lexical",
            ],
        )
        assert result.exit_code == 0
        assert "bleu4" in result.stdout
        assert "rouge_l" in result.stdout
        assert "jaccard" in result.stdout