"""Admin routes for the application."""

from flask import Blueprint

from app.services.decorators import get_current_user, require_auth, require_role
from app.services.scheduler_service import scheduler_service

bp = Blueprint("admin", __name__)


@bp.route("/")
@require_auth
@require_role("admin")
def admin_only() -> dict[str, str]:
    """Admin-only endpoint to demonstrate role-based access."""
    user = get_current_user()
    return {
        "message": f"Hello admin {user['name']}, you have admin access!",
        "user": user,
        "admin_info": "This endpoint is only accessible to admin users",
    }


@bp.route("/scheduler/status")
@require_auth
@require_role("admin")
def scheduler_status() -> dict:
    """Get scheduler status (admin only)."""
    return scheduler_service.get_scheduler_status()


@bp.route("/credits/refill", methods=["POST"])
@require_auth
@require_role("admin")
def manual_credit_refill() -> dict:
    """Manually trigger credit refill for all users (admin only)."""
    return scheduler_service.trigger_credit_refill_now()


@bp.route("/users")
@require_auth
@require_role("admin")
def list_users() -> dict:
    """List all users (admin only)."""
    from app.models.user import User
    
    users = User.query.order_by(User.created_at.desc()).all()
    return {
        "users": [user.to_dict() for user in users],
        "total": len(users)
    }


@bp.route("/users/<int:user_id>", methods=["PATCH"])
@require_auth
@require_role("admin")
def update_user(user_id: int) -> dict:
    """Update user information (admin only)."""
    from flask import request
    from app.database import db
    from app.models.user import User
    from app.models.plan import Plan
    
    data = request.get_json()
    if not data:
        return {"error": "No data provided"}, 400
    
    user = User.query.get(user_id)
    if not user:
        return {"error": "User not found"}, 404
    
    # Validate and update fields
    try:
        if "name" in data:
            name = data["name"].strip()
            if not name:
                return {"error": "Name cannot be empty"}, 400
            if len(name) > 100:
                return {"error": "Name too long (max 100 characters)"}, 400
            user.name = name
        
        if "credits" in data:
            credits = data["credits"]
            if not isinstance(credits, int) or credits < 0:
                return {"error": "Credits must be a non-negative integer"}, 400
            user.credits = credits
        
        if "plan_id" in data:
            plan_id = data["plan_id"]
            if not isinstance(plan_id, int):
                return {"error": "Plan ID must be an integer"}, 400
            
            plan = Plan.query.get(plan_id)
            if not plan:
                return {"error": "Plan not found"}, 404
            
            user.plan_id = plan_id
        
        if "is_active" in data:
            is_active = data["is_active"]
            if not isinstance(is_active, bool):
                return {"error": "is_active must be a boolean"}, 400
            user.is_active = is_active
        
        db.session.commit()
        
        return {
            "message": "User updated successfully",
            "user": user.to_dict()
        }
        
    except Exception as e:
        db.session.rollback()
        return {"error": f"Failed to update user: {str(e)}"}, 500


@bp.route("/users/<int:user_id>/deactivate", methods=["POST"])
@require_auth
@require_role("admin")
def deactivate_user(user_id: int) -> dict:
    """Deactivate a user (admin only)."""
    from app.database import db
    from app.models.user import User
    
    user = User.query.get(user_id)
    if not user:
        return {"error": "User not found"}, 404
    
    # Prevent admin from deactivating themselves
    current_user = get_current_user()
    if str(user.id) == current_user["id"]:
        return {"error": "Cannot deactivate your own account"}, 400
    
    try:
        user.deactivate()
        db.session.commit()
        
        return {
            "message": "User deactivated successfully",
            "user": user.to_dict()
        }
        
    except Exception as e:
        db.session.rollback()
        return {"error": f"Failed to deactivate user: {str(e)}"}, 500


@bp.route("/users/<int:user_id>/activate", methods=["POST"])
@require_auth
@require_role("admin")
def activate_user(user_id: int) -> dict:
    """Activate a user (admin only)."""
    from app.database import db
    from app.models.user import User
    
    user = User.query.get(user_id)
    if not user:
        return {"error": "User not found"}, 404
    
    try:
        user.activate()
        db.session.commit()
        
        return {
            "message": "User activated successfully",
            "user": user.to_dict()
        }
        
    except Exception as e:
        db.session.rollback()
        return {"error": f"Failed to activate user: {str(e)}"}, 500


@bp.route("/plans")
@require_auth
@require_role("admin")
def list_plans() -> dict:
    """List all available plans (admin only)."""
    from app.models.plan import Plan
    
    plans = Plan.query.order_by(Plan.id).all()
    return {
        "plans": [plan.to_dict() for plan in plans],
        "total": len(plans)
    }