"""Unit tests for core data models."""

import pytest
from datetime import datetime
from tagging_system.core.models import (
    FileInfo,
    ContentAnalysis,
    TagStructure,
    FrontmatterData,
    ValidationResult,
    ContentType,
    LanguageInfo
)


class TestFileInfo:
    """Test FileInfo model."""
    
    def test_file_info_creation(self):
        """Test FileInfo creation with required fields."""
        file_info = FileInfo(
            path="test/file.md",
            name="file.md",
            directory="test",
            extension=".md",
            size=100,
            created=datetime.now(),
            modified=datetime.now()
        )
        
        assert file_info.path == "test/file.md"
        assert file_info.name == "file.md"
        assert file_info.is_markdown is True
        assert file_info.relative_path == "test/file.md"
    
    def test_is_markdown_detection(self):
        """Test markdown file detection."""
        md_file = FileInfo("test.md", "test.md", ".", ".md", 100, datetime.now(), datetime.now())
        txt_file = FileInfo("test.txt", "test.txt", ".", ".txt", 100, datetime.now(), datetime.now())
        
        assert md_file.is_markdown is True
        assert txt_file.is_markdown is False


class TestContentAnalysis:
    """Test ContentAnalysis model."""
    
    def test_content_analysis_creation(self):
        """Test ContentAnalysis creation."""
        analysis = ContentAnalysis(
            language=LanguageInfo.ENGLISH,
            content_type=ContentType.NOTE,
            topics=["ai", "ml"]
        )
        
        assert analysis.language == LanguageInfo.ENGLISH
        assert analysis.content_type == ContentType.NOTE
        assert analysis.topics == ["ai", "ml"]
        assert analysis.complexity == "basic"  # Default value
    
    def test_complexity_validation(self):
        """Test complexity validation in post_init."""
        analysis = ContentAnalysis(
            language=LanguageInfo.ENGLISH,
            content_type=ContentType.NOTE,
            topics=[],
            complexity="invalid"
        )
        
        assert analysis.complexity == "basic"  # Should default to basic


class TestTagStructure:
    """Test TagStructure model."""
    
    def test_tag_structure_creation(self):
        """Test TagStructure creation."""
        tags = TagStructure(
            primary=["project"],
            hierarchical=["tech/ai"],
            content=["python"],
            meta=["lang/en"],
            custom=["custom"]
        )
        
        assert tags.primary == ["project"]
        assert tags.hierarchical == ["tech/ai"]
        assert tags.content == ["python"]
        assert tags.meta == ["lang/en"]
        assert tags.custom == ["custom"]
    
    def test_all_tags_method(self):
        """Test all_tags method returns unique tags."""
        tags = TagStructure(
            primary=["project", "duplicate"],
            hierarchical=["tech/ai"],
            content=["python", "duplicate"],  # Duplicate tag
            meta=["lang/en"],
            custom=["custom"]
        )
        
        all_tags = tags.all_tags()
        # Expected unique tags: project, duplicate, tech/ai, python, lang/en, custom = 6 tags
        assert len(all_tags) == 6
        assert "duplicate" in all_tags
        assert "project" in all_tags
        assert "tech/ai" in all_tags
        assert "python" in all_tags
        assert "lang/en" in all_tags
        assert "custom" in all_tags
        
        # Test that duplicates are actually removed by checking set behavior
        unique_tags = set(all_tags)
        assert len(unique_tags) == len(all_tags)  # No duplicates should exist
        
        # Test with actual duplicates to verify deduplication works
        tags_with_more_duplicates = TagStructure(
            primary=["tag1", "tag2"],
            hierarchical=["tag1"],  # Duplicate of primary
            content=["tag2", "tag3"],  # Duplicate of primary
            meta=["tag3"],  # Duplicate of content
            custom=["tag4"]
        )
        deduplicated = tags_with_more_duplicates.all_tags()
        assert len(deduplicated) == 4  # tag1, tag2, tag3, tag4
        assert len(set(deduplicated)) == len(deduplicated)


class TestFrontmatterData:
    """Test FrontmatterData model."""
    
    def test_frontmatter_data_creation(self):
        """Test FrontmatterData creation."""
        frontmatter = FrontmatterData(
            title="Test",
            tags=["tag1", "tag2"],
            created="2024-01-01",
            type="note"
        )
        
        assert frontmatter.title == "Test"
        assert frontmatter.tags == ["tag1", "tag2"]
        assert frontmatter.created == "2024-01-01"
        assert frontmatter.type == "note"
    
    def test_to_dict_method(self):
        """Test to_dict method excludes None values."""
        frontmatter = FrontmatterData(
            title="Test",
            tags=["tag1"],
            created="2024-01-01",
            updated=None,  # Should be excluded
            custom_fields={"custom": "value"}
        )
        
        result = frontmatter.to_dict()
        
        assert result["title"] == "Test"
        assert result["tags"] == ["tag1"]
        assert result["created"] == "2024-01-01"
        assert "updated" not in result  # None values excluded
        assert result["custom"] == "value"  # Custom fields included


class TestValidationResult:
    """Test ValidationResult model."""
    
    def test_validation_result_creation(self):
        """Test ValidationResult creation."""
        result = ValidationResult(is_valid=True)
        
        assert result.is_valid is True
        assert result.errors == []
        assert result.warnings == []
        assert result.suggestions == []
    
    def test_add_error_sets_invalid(self):
        """Test that adding error sets is_valid to False."""
        result = ValidationResult(is_valid=True)
        result.add_error("Test error")
        
        assert result.is_valid is False
        assert "Test error" in result.errors
    
    def test_add_warning_and_suggestion(self):
        """Test adding warnings and suggestions."""
        result = ValidationResult(is_valid=True)
        result.add_warning("Test warning")
        result.add_suggestion("Test suggestion")
        
        assert result.is_valid is True  # Warnings don't affect validity
        assert "Test warning" in result.warnings
        assert "Test suggestion" in result.suggestions