"""Dashboard routes - product owner feedback management"""
from flask import Blueprint, render_template, request, redirect, url_for, flash, send_file, abort, current_app
from flask_login import login_required, current_user
from app.services.feedback_storage import FeedbackStorageService
from app.services.ai_analyzer import ClaudeAnalyzer
from app.models.product import Product
import os
import mimetypes


bp = Blueprint('dashboard', __name__)


def get_user_product_ids():
    """Get list of product IDs accessible to current user

    Returns:
        list: Product IDs or None for administrators (access to all)
    """
    if not current_user.is_authenticated:
        return []

    # Administrators have access to all products
    if current_user.role == 'administrator':
        return None  # None means all products

    # Product owners see only assigned products
    return current_user.product_ids


def check_product_access(product_id):
    """Check if current user has access to product

    Args:
        product_id: Product ID to check

    Returns:
        bool: True if user has access, False otherwise
    """
    if not current_user.is_authenticated:
        return False

    # Administrators have access to all products
    if current_user.role == 'administrator':
        return True

    # Product owners see only assigned products
    return product_id in current_user.product_ids


@bp.route('/dashboard')
@login_required
def list():
    """Dashboard - list feedback with filters and search

    Query parameters:
        page: Page number (default 1)
        category: Filter by category
        status: Filter by status
        language: Filter by language
        search: Search query
    """
    try:
        # Get query parameters
        page = request.args.get('page', 1, type=int)
        category = request.args.get('category')
        status = request.args.get('status')
        language = request.args.get('language')
        search_query = request.args.get('search')

        # Build filters
        filters = {}
        if category:
            filters['category'] = category
        if status:
            filters['status'] = status
        if language:
            filters['language'] = language

        # Get product IDs for current user
        product_ids = get_user_product_ids()

        current_app.logger.info(f'Dashboard accessed by {current_user.username} (page={page}, filters={filters})')

        # Load feedback list
        result = FeedbackStorageService.load_feedback_list(
            product_ids=product_ids,
            page=page,
            per_page=50,
            filters=filters if filters else None,
            search_query=search_query
        )

        # Load product names for display
        all_products = Product.get_all()
        product_names = {p.product_id: p.name for p in all_products}

        return render_template(
            'dashboard/list.html',
            feedback_list=result['items'],
            page=result['page'],
            pages=result['pages'],
            total=result['total'],
            product_names=product_names,
            filters={
                'category': category,
                'status': status,
                'language': language,
                'search': search_query
            }
        )

    except Exception as e:
        current_app.logger.error(f'Error loading dashboard for {current_user.username}: {e}', exc_info=True)
        abort(500)


@bp.route('/feedback/<feedback_id>')
@login_required
def detail(feedback_id):
    """Feedback detail view

    Args:
        feedback_id: Feedback ID to view

    Returns:
        Rendered template or 403/404 error
    """
    # First check if feedback exists globally (to distinguish 403 from 404)
    all_products = Product.get_all()
    feedback_data = None
    actual_product_id = None

    for product in all_products:
        feedback_data = FeedbackStorageService.load_feedback_detail(product.product_id, feedback_id)
        if feedback_data:
            actual_product_id = product.product_id
            break

    # If not found globally, return 404
    if not feedback_data:
        abort(404)

    # Check if user has access to this product
    if not check_product_access(actual_product_id):
        abort(403)

    # Load product info
    product = Product.get_by_id(actual_product_id)

    # Check if analysis exists
    has_analysis = FeedbackStorageService.has_analysis(actual_product_id, feedback_id)

    # Check if feedback can be analyzed (has text content)
    can_analyze = bool(feedback_data.get('content'))

    return render_template(
        'dashboard/detail.html',
        feedback=feedback_data,
        product=product,
        has_analysis=has_analysis,
        can_analyze=can_analyze
    )


@bp.route('/feedback/<feedback_id>/status', methods=['POST'])
@login_required
def update_status(feedback_id):
    """Update feedback status

    Args:
        feedback_id: Feedback ID to update

    Returns:
        Redirect to detail page or error
    """
    new_status = request.form.get('status')

    if not new_status:
        flash('Status is required', 'error')
        return redirect(url_for('dashboard.detail', feedback_id=feedback_id))

    # Find feedback globally first
    all_products = Product.get_all()
    actual_product_id = None

    for product in all_products:
        feedback_data = FeedbackStorageService.load_feedback_detail(product.product_id, feedback_id)
        if feedback_data:
            actual_product_id = product.product_id
            break

    # If not found globally, return 404
    if not actual_product_id:
        abort(404)

    # Check if user has access to this product
    if not check_product_access(actual_product_id):
        abort(403)

    # Update status
    success = FeedbackStorageService.update_feedback_status_by_id(
        actual_product_id, feedback_id, new_status
    )

    if success:
        flash(f'Status updated to {new_status}', 'success')
    else:
        flash('Failed to update status', 'error')

    return redirect(url_for('dashboard.detail', feedback_id=feedback_id))


@bp.route('/feedback/<feedback_id>/analyze', methods=['POST'])
@login_required
def trigger_analysis(feedback_id):
    """Manually trigger AI analysis for feedback

    Args:
        feedback_id: Feedback ID to analyze

    Returns:
        Redirect to detail page with flash message
    """
    # Find feedback globally first
    all_products = Product.get_all()
    actual_product_id = None
    feedback_data = None

    for product in all_products:
        feedback_data = FeedbackStorageService.load_feedback_detail(product.product_id, feedback_id)
        if feedback_data:
            actual_product_id = product.product_id
            break

    # If not found globally, return 404
    if not actual_product_id or not feedback_data:
        abort(404)

    # Check if user has access to this product
    if not check_product_access(actual_product_id):
        abort(403)

    # Check if feedback has text content
    if not feedback_data.get('content'):
        flash('Cannot analyze feedback without text content', 'error')
        return redirect(url_for('dashboard.detail', feedback_id=feedback_id))

    # Get product info for owner language
    product = Product.get_by_id(actual_product_id)

    try:
        # Update status to "analyzing"
        FeedbackStorageService.update_feedback_status_by_id(
            actual_product_id, feedback_id, 'analyzing'
        )

        # Get API key from app configuration
        api_key = current_app.config.get('ANTHROPIC_API_KEY')

        if not api_key:
            raise Exception("ANTHROPIC_API_KEY not configured in app settings")

        # Initialize analyzer
        analyzer = ClaudeAnalyzer(api_key=api_key)

        # Analyze feedback
        result = analyzer.analyze_feedback(
            feedback_text=feedback_data['content'],
            target_language=product.owner_language,
            product_id=actual_product_id
        )

        # Save analysis results
        FeedbackStorageService.save_analysis(actual_product_id, feedback_id, result)

        # Update status to "analyzed"
        FeedbackStorageService.update_feedback_status_by_id(
            actual_product_id, feedback_id, 'analyzed'
        )

        flash('Analysis completed successfully', 'success')

    except Exception as e:
        # Update status to "analysis_failed" on error
        FeedbackStorageService.update_feedback_status_by_id(
            actual_product_id, feedback_id, 'analysis_failed'
        )
        current_app.logger.error(f"Manual analysis failed for feedback {feedback_id}: {e}")
        flash(f'Analysis failed: {str(e)}', 'error')

    return redirect(url_for('dashboard.detail', feedback_id=feedback_id))


@bp.route('/feedback/<feedback_id>/attachment/<filename>')
@login_required
def download_attachment(feedback_id, filename):
    """Download attachment file

    Args:
        feedback_id: Feedback ID
        filename: Attachment filename

    Returns:
        File download or error
    """
    # Find feedback globally first
    all_products = Product.get_all()
    actual_product_id = None

    for product in all_products:
        feedback_data = FeedbackStorageService.load_feedback_detail(product.product_id, feedback_id)
        if feedback_data:
            actual_product_id = product.product_id
            break

    # If not found globally, return 404
    if not actual_product_id:
        abort(404)

    # Check if user has access to this product
    if not check_product_access(actual_product_id):
        abort(403)

    # Get attachment path
    attachment_path = FeedbackStorageService.get_attachment_path(
        actual_product_id, feedback_id, filename
    )

    if not attachment_path:
        abort(404)

    # Detect MIME type
    mime_type, _ = mimetypes.guess_type(filename)
    if not mime_type:
        mime_type = 'application/octet-stream'

    # Send file
    return send_file(
        attachment_path,
        mimetype=mime_type,
        as_attachment=True,
        download_name=filename
    )