"""
SEO Optimizer Agent

Optimizes content for search engines by analyzing keywords, meta tags,
readability, and providing actionable SEO recommendations.
"""

from typing import Any, Dict, List
from agents.base import BaseAgent


class SEOOptimizerAgent(BaseAgent):
    """
    Optimizes content for search engines.

    Features:
    - Keyword optimization
    - Meta tag generation
    - Readability analysis
    - Content structure analysis
    - Internal linking suggestions
    - Technical SEO checks
    """

    def __init__(self):
        super().__init__(
            name='seo-optimizer',
            description='Optimize content for search engines',
            category='creative',
            version='1.0.0',
            tags=['seo', 'optimization', 'keywords', 'search']
        )

    async def execute(self, params: Dict[str, Any]) -> Dict[str, Any]:
        """
        Optimize content for SEO.

        Args:
            params: {
                'content': str,
                'target_keyword': str,
                'url': str,
                'content_type': 'blog|product|landing_page|article',
                'options': {
                    'analyze_competitors': bool,
                    'suggest_keywords': bool,
                    'check_technical': bool,
                    'generate_schema': bool
                }
            }

        Returns:
            {
                'status': 'success|failed',
                'seo_score': int,
                'optimized_content': str,
                'recommendations': List[Dict],
                'keyword_analysis': Dict,
                'meta_tags': Dict
            }
        """
        content = params.get('content', '')
        target_keyword = params.get('target_keyword')
        url = params.get('url', '')
        content_type = params.get('content_type', 'blog')
        options = params.get('options', {})

        self.logger.info(
            f"Optimizing content for keyword: {target_keyword}"
        )

        # Mock SEO optimization
        word_count = len(content.split())
        keyword_density = 2.3  # Mock value

        seo_score = 78

        keyword_analysis = {
            'primary_keyword': target_keyword,
            'keyword_density': keyword_density,
            'ideal_density': '1-2%',
            'keyword_count': 15,
            'keyword_placement': {
                'title': True,
                'meta_description': True,
                'first_paragraph': True,
                'headings': True,
                'url': False,
                'alt_tags': True,
                'conclusion': True
            },
            'secondary_keywords': [
                f'{target_keyword} guide',
                f'best {target_keyword}',
                f'{target_keyword} tips',
                f'how to {target_keyword}'
            ],
            'lsi_keywords': [
                f'{target_keyword} strategies',
                f'{target_keyword} techniques',
                f'{target_keyword} best practices',
                f'{target_keyword} tools'
            ]
        }

        meta_tags = {
            'title': f"{target_keyword}: Complete Guide 2025 | Your Brand",
            'description': f"Discover everything about {target_keyword}. Expert tips, strategies, and best practices to master {target_keyword} in 2025.",
            'canonical': url,
            'robots': 'index, follow',
            'og:title': f"The Ultimate {target_keyword} Guide",
            'og:description': f"Learn {target_keyword} from experts. Comprehensive guide with actionable tips.",
            'og:type': 'article',
            'og:url': url,
            'twitter:card': 'summary_large_image',
            'twitter:title': f"{target_keyword} Guide",
            'twitter:description': f"Master {target_keyword} with our expert guide"
        }

        recommendations = [
            {
                'priority': 'high',
                'category': 'keyword',
                'issue': 'Target keyword not in URL',
                'suggestion': f'Update URL to include "{target_keyword}"',
                'impact': 'High - URLs are important ranking factors'
            },
            {
                'priority': 'high',
                'category': 'content',
                'issue': 'Content length below optimal',
                'suggestion': f'Increase from {word_count} to 1500+ words',
                'impact': 'Medium - Longer content tends to rank better'
            },
            {
                'priority': 'medium',
                'category': 'structure',
                'issue': 'Missing H2 headings',
                'suggestion': 'Add descriptive H2 headings with keywords',
                'impact': 'Medium - Improves readability and SEO'
            },
            {
                'priority': 'medium',
                'category': 'links',
                'issue': 'No internal links detected',
                'suggestion': 'Add 3-5 internal links to related content',
                'impact': 'Medium - Helps with site structure and engagement'
            },
            {
                'priority': 'low',
                'category': 'images',
                'issue': 'Images missing alt text',
                'suggestion': 'Add descriptive alt text to all images',
                'impact': 'Low - Improves accessibility and image SEO'
            }
        ]

        technical_seo = {
            'mobile_friendly': True,
            'page_speed_score': 85,
            'ssl_enabled': True,
            'canonical_tag': True,
            'structured_data': False,
            'sitemap_included': True,
            'robots_txt': True,
            'meta_robots': 'index, follow',
            'broken_links': 0,
            'redirect_chains': 0
        }

        readability = {
            'flesch_reading_ease': 65,
            'grade_level': '8th-9th grade',
            'avg_sentence_length': 18,
            'avg_word_length': 4.5,
            'passive_voice': '12%',
            'transition_words': '35%',
            'subheadings_distribution': 'Good',
            'paragraph_length': 'Optimal'
        }

        content_structure = {
            'h1_count': 1,
            'h2_count': 5,
            'h3_count': 8,
            'paragraph_count': 23,
            'image_count': 4,
            'video_count': 0,
            'list_count': 3,
            'table_count': 1,
            'word_count': word_count
        }

        return {
            'status': 'success',
            'seo_score': seo_score,
            'grade': 'C+' if seo_score < 80 else 'B' if seo_score < 90 else 'A',
            'keyword_analysis': keyword_analysis,
            'meta_tags': meta_tags,
            'recommendations': recommendations,
            'technical_seo': technical_seo,
            'readability': readability,
            'content_structure': content_structure,
            'internal_link_suggestions': [
                {
                    'anchor_text': f'{target_keyword} basics',
                    'target_url': '/blog/basics',
                    'relevance': 'high'
                },
                {
                    'anchor_text': 'advanced strategies',
                    'target_url': '/blog/advanced',
                    'relevance': 'medium'
                },
                {
                    'anchor_text': 'related tools',
                    'target_url': '/tools',
                    'relevance': 'medium'
                }
            ],
            'competitor_analysis': {
                'avg_word_count': 1800,
                'avg_keyword_density': 1.8,
                'common_topics': [
                    f'{target_keyword} best practices',
                    f'{target_keyword} case studies',
                    f'{target_keyword} examples'
                ],
                'content_gaps': [
                    'Video content',
                    'Interactive examples',
                    'Expert interviews'
                ]
            },
            'schema_markup': {
                '@context': 'https://schema.org',
                '@type': 'Article',
                'headline': meta_tags['title'],
                'description': meta_tags['description'],
                'author': {
                    '@type': 'Organization',
                    'name': 'Your Brand'
                },
                'datePublished': '2025-01-15',
                'dateModified': '2025-01-15'
            },
            'next_actions': [
                'Add target keyword to URL',
                'Expand content to 1500+ words',
                'Add 3-5 H2 headings with keywords',
                'Include 3-5 internal links',
                'Add alt text to all images',
                'Implement schema markup',
                'Add video content',
                'Create FAQ section',
                'Build quality backlinks',
                'Monitor rankings weekly'
            ],
            'estimated_improvements': {
                'ranking_potential': '+15-20 positions',
                'organic_traffic': '+35-50%',
                'click_through_rate': '+25-30%'
            }
        }

    def validate_params(self, params: Dict[str, Any]) -> bool:
        """Validate SEO optimization parameters."""
        if 'target_keyword' not in params:
            self.logger.error("Missing required field: target_keyword")
            return False

        return True
