"""Unit tests for format handlers."""

import json
import os
import tempfile

import pytest

from configforge.formatters import (
    JSONHandler,
    YAMLHandler,
    TOMLHandler,
    ENVHandler,
    TypeScriptHandler,
)


class TestJSONHandler:
    """Tests for JSONHandler."""

    def test_loads_valid_json(self):
        """Test parsing valid JSON string."""
        content = '{"name": "test", "value": 123}'
        result = JSONHandler.loads(content)
        assert result == {"name": "test", "value": 123}

    def test_loads_invalid_json(self):
        """Test parsing invalid JSON raises error."""
        from configforge.exceptions import ConversionError
        with pytest.raises(ConversionError):
            JSONHandler.loads("invalid json")

    def test_dumps_data(self):
        """Test serializing data to JSON string."""
        data = {"name": "test", "value": 123}
        result = JSONHandler.dumps(data, indent=2)
        assert "name" in result
        assert "test" in result

    def test_read_write_file(self, sample_json_config):
        """Test reading and writing JSON files."""
        with tempfile.NamedTemporaryFile(mode='w', suffix='.json', delete=False) as f:
            filepath = f.name

        try:
            JSONHandler.write(filepath, sample_json_config)
            result = JSONHandler.read(filepath)
            assert result == sample_json_config
        finally:
            os.unlink(filepath)


class TestYAMLHandler:
    """Tests for YAMLHandler."""

    def test_loads_valid_yaml(self):
        """Test parsing valid YAML string."""
        content = "name: test\nvalue: 123\n"
        result = YAMLHandler.loads(content)
        assert result == {"name": "test", "value": 123}

    def test_loads_empty_yaml(self):
        """Test parsing empty YAML returns empty dict."""
        result = YAMLHandler.loads("")
        assert result == {}

    def test_dumps_data(self):
        """Test serializing data to YAML string."""
        data = {"name": "test", "value": 123}
        result = YAMLHandler.dumps(data)
        assert "name" in result
        assert "test" in result

    def test_read_write_file(self, sample_yaml_config):
        """Test reading and writing YAML files."""
        with tempfile.NamedTemporaryFile(mode='w', suffix='.yaml', delete=False) as f:
            filepath = f.name

        try:
            with open(filepath, 'w') as f:
                f.write(sample_yaml_config)
            result = YAMLHandler.read(filepath)
            assert result["database"]["name"] == "myapp"
        finally:
            os.unlink(filepath)


class TestTOMLHandler:
    """Tests for TOMLHandler."""

    def test_loads_valid_toml(self):
        """Test parsing valid TOML string."""
        content = 'name = "test"\nvalue = 123\n'
        result = TOMLHandler.loads(content)
        assert result["name"] == "test"
        assert result["value"] == 123

    def test_dumps_data(self):
        """Test serializing data to TOML string."""
        data = {"name": "test", "value": 123}
        result = TOMLHandler.dumps(data)
        assert "name" in result
        assert "test" in result

    def test_read_write_file(self, sample_toml_config):
        """Test reading and writing TOML files."""
        with tempfile.NamedTemporaryFile(mode='w', suffix='.toml', delete=False) as f:
            filepath = f.name

        try:
            with open(filepath, 'w') as f:
                f.write(sample_toml_config)
            result = TOMLHandler.read(filepath)
            assert result["database"]["name"] == "myapp"
        finally:
            os.unlink(filepath)


class TestENVHandler:
    """Tests for ENVHandler."""

    def test_loads_valid_env(self):
        """Test parsing valid ENV string."""
        content = 'KEY=value\nNUMBER=123\n'
        result = ENVHandler.loads(content)
        assert result["KEY"] == "value"
        assert result["NUMBER"] == 123

    def test_loads_env_with_quotes(self):
        """Test parsing ENV with quoted values."""
        content = 'KEY="quoted value"\n'
        result = ENVHandler.loads(content)
        assert result["KEY"] == "quoted value"

    def test_loads_env_with_booleans(self):
        """Test parsing ENV with boolean values."""
        content = 'TRUE=true\nFALSE=false\n'
        result = ENVHandler.loads(content)
        assert result["TRUE"] is True
        assert result["FALSE"] is False

    def test_dumps_data(self):
        """Test serializing data to ENV format."""
        data = {"KEY": "value", "NUMBER": 123}
        result = ENVHandler.dumps(data)
        assert "KEY=value" in result

    def test_read_write_file(self, sample_env_config):
        """Test reading and writing ENV files."""
        with tempfile.NamedTemporaryFile(mode='w', suffix='.env', delete=False) as f:
            filepath = f.name

        try:
            with open(filepath, 'w') as f:
                f.write(sample_env_config)
            result = ENVHandler.read(filepath)
            assert result["DATABASE_HOST"] == "localhost"
        finally:
            os.unlink(filepath)


class TestTypeScriptHandler:
    """Tests for TypeScriptHandler."""

    def test_generate_from_schema_simple(self):
        """Test generating TypeScript from simple schema."""
        schema = {
            "type": "object",
            "properties": {
                "name": {"type": "string"},
                "age": {"type": "integer"}
            },
            "required": ["name"]
        }
        result = TypeScriptHandler.generate_from_schema(schema, "User")
        assert "interface User" in result
        assert "name: string" in result
        assert "age?: number" in result

    def test_generate_from_schema_nested(self):
        """Test generating TypeScript from nested schema."""
        schema = {
            "type": "object",
            "properties": {
                "user": {
                    "type": "object",
                    "properties": {
                        "name": {"type": "string"},
                        "email": {"type": "string"}
                    },
                    "required": ["name", "email"]
                }
            },
            "required": ["user"]
        }
        result = TypeScriptHandler.generate_from_schema(schema, "Config")
        assert "interface Config" in result
        assert "interface User" in result

    def test_generate_from_data(self):
        """Test generating TypeScript from sample data."""
        data = {
            "name": "test",
            "value": 123,
            "active": True
        }
        result = TypeScriptHandler.generate_from_data(data, "Config")
        assert "interface Config" in result
        assert "name: string" in result
        assert "value: number" in result

    def test_generate_with_enum(self):
        """Test generating TypeScript with enum values."""
        schema = {
            "type": "object",
            "properties": {
                "status": {
                    "type": "string",
                    "enum": ["active", "inactive", "pending"]
                }
            }
        }
        result = TypeScriptHandler.generate_from_schema(schema, "Config")
        assert "active" in result
        assert "inactive" in result