import os
import logging
import datetime
from typing import List, Dict, Any

# --- MOCK IMPORTS FOR AIVA'S INTERNAL SYSTEMS ---
# In a real AIVA system, these would be actual modules managing configuration,
# skill graphs, and knowledge base updates.
class MockAIVAConfig:
    YOUTUBE_API_KEY = os.environ.get("AIVA_YOUTUBE_API_KEY", "MOCK_YOUTUBE_API_KEY")
    # Example: A list of YouTube channels or specific video IDs AIVA should monitor
    MONITORED_YOUTUBE_SOURCES = [
        {"type": "channel", "id": "UC-lHJZR3Gqxm24_Vd_AJ5Yw"}, # Example channel ID
        {"type": "video", "id": "dQw4w9WgXcQ"} # Example video ID (Rick Astley - Never Gonna Give You Up)
    ]
    # Define a threshold for how far back to look for new videos (e.g., 24 hours)
    MONITORING_LOOKBACK_HOURS = 24

class MockAIVASkillsGraph:
    _skills_database = {}
    _insights_database = {}

    @classmethod
    def add_skill(cls, skill_name: str, source_url: str, confidence: float = 1.0, context: str = ""):
        if skill_name not in cls._skills_database:
            cls._skills_database[skill_name] = []
        cls._skills_database[skill_name].append({
            "source": source_url,
            "timestamp": datetime.datetime.utcnow().isoformat(),
            "confidence": confidence,
            "context": context
        })
        logging.info(f"[AIVA Skills Graph] Added skill: '{skill_name}' from {source_url}")

    @classmethod
    def add_insight(cls, insight_text: str, source_url: str, confidence: float = 1.0, context: str = ""):
        if insight_text not in cls._insights_database:
            cls._insights_database[insight_text] = []
        cls._insights_database[insight_text].append({
            "source": source_url,
            "timestamp": datetime.datetime.utcnow().isoformat(),
            "confidence": confidence,
            "context": context
        })
        logging.info(f"[AIVA Skills Graph] Added insight: '{insight_text}' from {source_url}")

    @classmethod
    def get_all_skills(cls):
        return cls._skills_database

    @classmethod
    def get_all_insights(cls):
        return cls._insights_database

# --- MOCK EXTERNAL LIBRARIES ---
# In a real system, you would install and import 'youtube-transcript-api'
# and potentially a more sophisticated NLP library like spaCy or NLTK.
class MockYouTubeTranscriptApi:
    @staticmethod
    def get_transcript(video_id: str, languages: List[str] = ['en']) -> List[Dict[str, Any]]:
        # Simulate fetching a transcript
        mock_transcripts = {
            "dQw4w9WgXcQ": [
                {"text": "We're no strangers to love", "start": 0.0, "duration": 3.0},
                {"text": "You know the rules and so do I", "start": 3.5, "duration": 3.0},
                {"text": "A full commitment's what I'm thinking of", "start": 7.0, "duration": 4.0},
                {"text": "You wouldn't get this from any other guy", "start": 11.5, "duration": 4.0},
                {"text": "I just wanna tell you how I'm feeling", "start": 16.0, "duration": 3.0},
                {"text": "Gotta make you understand", "start": 19.5, "duration": 2.0},
                {"text": "Never gonna give you up", "start": 22.0, "duration": 2.0},
                {"text": "Never gonna let you down", "start": 24.5, "duration": 2.0},
                {"text": "Never gonna run around and desert you", "start": 27.0, "duration": 3.0},
                {"text": "Never gonna make you cry", "start": 30.5, "duration": 2.0},
                {"text": "Never gonna say goodbye", "start": 33.0, "duration": 2.0},
                {"text": "Never gonna tell a lie and hurt you", "start": 35.5, "duration": 3.0}
            ],
            "example_tech_video_id": [
                {"text": "Today we discuss advanced Python programming techniques.", "start": 0.0, "duration": 5.0},
                {"text": "Machine learning models require careful data preprocessing.", "start": 6.0, "duration": 6.0},
                {"text": "Understanding neural networks is crucial for AI development.", "start": 13.0, "duration": 7.0},
                {"text": "The future of quantum computing presents new challenges.", "start": 21.0, "duration": 6.0},
                {"text": "Leadership in technology often involves agile methodologies.", "start": 28.0, "duration": 7.0},
                {"text": "Key takeaway: continuous learning is vital for innovation.", "start": 36.0, "duration": 7.0}
            ]
        }
        if video_id in mock_transcripts:
            logging.info(f"[Mock Transcript API] Retrieved transcript for {video_id}")
            return mock_transcripts[video_id]
        else:
            logging.warning(f"[Mock Transcript API] No transcript found for {video_id}. Simulating a generic one.")
            return [
                {"text": "This video contains valuable information about skill development and future trends.", "start": 0.0, "duration": 10.0},
                {"text": "Problem-solving strategies are discussed alongside new approaches to data analysis.", "start": 11.0, "duration": 12.0},
                {"text": "A critical challenge in AI is ethical deployment, requiring careful consideration.", "start": 24.0, "duration": 13.0}
            ]

class MockYouTubeDataAPI:
    def __init__(self, api_key: str):
        self.api_key = api_key

    def get_channel_uploads(self, channel_id: str, published_after: datetime.datetime) -> List[Dict[str, Any]]:
        # Simulate fetching recent videos from a channel
        logging.info(f"[Mock YouTube Data API] Fetching uploads for channel {channel_id} after {published_after}")
        if channel_id == "UC-lHJZR3Gqxm24_Vd_AJ5Yw": # Example channel
            # Return a mock video that would be new
            return [
                {
                    "id": "example_tech_video_id",
                    "title": "Advanced Python & AI Development",
                    "published_at": (datetime.datetime.utcnow() - datetime.timedelta(hours=12)).isoformat() + "Z",
                    "url": "https://www.youtube.com/watch?v=example_tech_video_id"
                }
            ]
        return []


# Configure logging
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')

class YouTubeIntelligencePipeline:
    SKILL_KEYWORDS = {
        "programming": ["python", "java", "c++", "coding", "development", "software engineering", "algorithm"],
        "data analysis": ["data science", "analytics", "machine learning", "ai", "deep learning", "statistics", "model", "neural network"],
        "design": ["ui/ux", "graphic design", "product design", "figma", "adobe xd", "user experience"],
        "leadership": ["management", "team building", "strategy", "decision making", "agile", "scrum"],
        "communication": ["presentation", "public speaking", "negotiation", "storytelling"],
        "finance": ["investing", "stocks", "economics", "budgeting", "market"],
        "quantum computing": ["quantum computing", "qubit", "quantum physics", "quantum algorithm"]
    }

    INSIGHT_TRIGGERS = [
        "future of", "trend in", "breakthrough", "paradigm shift", "new approach",
        "critical challenge", "key takeaway", "implications for", "innovation", "ethical deployment"
    ]

    def __init__(self, config=MockAIVAConfig, skills_graph=MockAIVASkillsGraph,
                 youtube_transcript_api=MockYouTubeTranscriptApi, youtube_data_api_client=None):
        self.config = config
        self.skills_graph = skills_graph
        self.transcript_api = youtube_transcript_api
        self.youtube_data_api = youtube_data_api_client or MockYouTubeDataAPI(self.config.YOUTUBE_API_KEY)
        self.logger = logging.getLogger(self.__class__.__name__)

    def _get_video_transcript(self, video_id: str) -> str:
        """Fetches the full text transcript for a given YouTube video ID."""
        try:
            transcript_list = self.transcript_api.get_transcript(video_id)
            full_transcript = " ".join([entry['text'] for entry in transcript_list])
            self.logger.info(f"Successfully retrieved transcript for video ID: {video_id}")
            return full_transcript
        except Exception as e:
            self.logger.error(f"Failed to get transcript for video ID {video_id}: {e}")
            return ""

    def _extract_skills_and_insights(self, text: str) -> Dict[str, List[str]]:
        """Extracts skills and key insights from the given text using keyword matching."""
        extracted_skills = set()
        extracted_insights = set()
        text_lower = text.lower()

        # Skill extraction
        for skill_category, keywords in self.SKILL_KEYWORDS.items():
            for keyword in keywords:
                if keyword in text_lower:
                    extracted_skills.add(skill_category)
                    # Optionally, add the specific keyword as a sub-skill or context
                    # extracted_skills.add(keyword) # if we want more granular skills

        # Insight extraction
        for trigger in self.INSIGHT_TRIGGERS:
            if trigger in text_lower:
                # For insights, we'll try to capture a surrounding phrase
                # This is a very basic implementation; a real NLP would use sentence parsing
                start_index = text_lower.find(trigger)
                if start_index != -1:
                    # Capture a snippet around the trigger
                    snippet_start = max(0, start_index - 50)
                    snippet_end = min(len(text_lower), start_index + len(trigger) + 100)
                    snippet = text[snippet_start:snippet_end].strip()
                    # Basic cleaning: remove excessive whitespace, trim
                    snippet = ' '.join(snippet.split())
                    extracted_insights.add(f"...{snippet}...")

        self.logger.info(f"Extracted {len(extracted_skills)} skills and {len(extracted_insights)} insights.")
        return {"skills": list(extracted_skills), "insights": list(extracted_insights)}

    def _process_video(self, video_id: str, video_url: str):
        """Processes a single video: fetches transcript, extracts, and updates AIVA."""
        self.logger.info(f"Processing video: {video_url}")
        transcript_text = self._get_video_transcript(video_id)

        if not transcript_text:
            self.logger.warning(f"Skipping video {video_id} due to empty transcript.")
            return

        extracted_data = self._extract_skills_and_insights(transcript_text)

        for skill in extracted_data["skills"]:
            self.skills_graph.add_skill(skill, source_url=video_url, context=transcript_text[:200]) # Add first 200 chars as context

        for insight in extracted_data["insights"]:
            self.skills_graph.add_insight(insight, source_url=video_url, context=transcript_text[:200]) # Add first 200 chars as context

        self.logger.info(f"Completed processing for video: {video_url}")

    def run_daily_pipeline(self):
        """Main function to run the daily YouTube intelligence pipeline."""
        self.logger.info("Starting YouTube Intelligence Pipeline for AIVA.")
        processed_count = 0
        new_skills_count = 0
        new_insights_count = 0

        # Calculate the 'published_after' timestamp for monitoring new content
        published_after = datetime.datetime.utcnow() - datetime.timedelta(hours=self.config.MONITORING_LOOKBACK_HOURS)

        videos_to_process = []

        for source in self.config.MONITORED_YOUTUBE_SOURCES:
            if source["type"] == "channel":
                # Use YouTube Data API to fetch recent videos from the channel
                recent_channel_videos = self.youtube_data_api.get_channel_uploads(source["id"], published_after)
                for video in recent_channel_videos:
                    videos_to_process.append({
                        "id": video["id"],
                        "url": video["url"]
                    })
            elif source["type"] == "video":
                # For specific video IDs, we just add them directly
                # In a real scenario, you might check if already processed or if content changed
                videos_to_process.append({
                    "id": source["id"],
                    "url": f"https://www.youtube.com/watch?v={source["id"]}"
                })

        if not videos_to_process:
            self.logger.info("No new YouTube content to process today.")
            return

        for video_info in videos_to_process:
            video_id = video_info["id"]
            video_url = video_info["url"]

            initial_skills_count = len(self.skills_graph.get_all_skills())
            initial_insights_count = len(self.skills_graph.get_all_insights())

            self._process_video(video_id, video_url)

            processed_count += 1
            new_skills_count += (len(self.skills_graph.get_all_skills()) - initial_skills_count)
            new_insights_count += (len(self.skills_graph.get_all_insights()) - initial_insights_count)

        self.logger.info(f"YouTube Intelligence Pipeline finished. Processed {processed_count} videos.")
        self.logger.info(f"Added {new_skills_count} new skills and {new_insights_count} new insights to AIVA's knowledge.")
        self.logger.info("AIVA's Skills Graph (current snapshot):\n" +
                         f"Skills: {list(self.skills_graph.get_all_skills().keys())}\n" +
                         f"Insights: {list(self.skills_graph.get_all_insights().keys())}")

        self.logger.info("YouTube Intelligence Pipeline successfully completed for Queen AIVA.")

# Example of how to run the pipeline (for testing/demonstration)
if __name__ == "__main__":
    # Ensure the mock YouTube API key is set or provide a real one if testing live
    os.environ["AIVA_YOUTUBE_API_KEY"] = "YOUR_YOUTUBE_API_KEY_HERE" # Replace with a real key if you want to test with real data

    # Instantiate and run the pipeline
    pipeline = YouTubeIntelligencePipeline()
    pipeline.run_daily_pipeline()

    print("\n--- AIVA's Current Skills & Insights ---")
    print("Skills:")
    for skill, sources in MockAIVASkillsGraph.get_all_skills().items():
        print(f"  - {skill} (from {len(sources)} sources)")
    print("\nInsights:")
    for insight, sources in MockAIVASkillsGraph.get_all_insights().items():
        print(f"  - {insight} (from {len(sources)} sources)")

