import traceback

import jinja2
from flask import render_template, request, jsonify, redirect, current_app, flash

from common.utils.eveai_exceptions import EveAINoSessionTenant


def not_found_error(error):
    current_app.logger.error(f"Not Found Error: {error}")
    current_app.logger.error(traceback.format_exc())
    return render_template('error/404.html'), 404


def internal_server_error(error):
    current_app.logger.error(f"Internal Server Error: {error}")
    current_app.logger.error(traceback.format_exc())
    return render_template('error/500.html'), 500


def not_authorised_error(error):
    current_app.logger.error(f"Not Authorised Error: {error}")
    current_app.logger.error(traceback.format_exc())
    return render_template('error/401.html'), 401


def access_forbidden(error):
    current_app.logger.error(f"Access Forbidden: {error}")
    current_app.logger.error(traceback.format_exc())
    return render_template('error/403.html'), 403


def key_error_handler(error):
    current_app.logger.error(f"Key Error: {error}")
    current_app.logger.error(traceback.format_exc())
    return render_template('error/500.html'), 500


def attribute_error_handler(error):
    """Handle AttributeError exceptions."""
    error_msg = str(error)
    current_app.logger.error(f"AttributeError: {error_msg}")
    current_app.logger.error(traceback.format_exc())
    return render_template('error/500.html'), 500


def no_tenant_selected_error(error):
    """Handle errors when no tenant is selected in the current session."""
    current_app.logger.error(f"No Session Tenant Error: {error}")
    current_app.logger.error(traceback.format_exc())
    return render_template('error.html', message="Session expired. Please use a valid magic link."), 401


def general_exception(e):
    current_app.logger.error(f"Unhandled Exception: {e}", exc_info=True)
    return render_template('error.html', message="An application error occurred."), 500


def template_not_found_error(error):
    """Handle Jinja2 TemplateNotFound exceptions."""
    current_app.logger.error(f'Template not found: {error.name}')
    current_app.logger.error(f'Search Paths: {current_app.jinja_loader.list_templates()}')
    current_app.logger.error(traceback.format_exc())
    return render_template('error.html', message="Template not found."), 404


def template_syntax_error(error):
    """Handle Jinja2 TemplateSyntaxError exceptions."""
    current_app.logger.error(f'Template syntax error: {error.message}')
    current_app.logger.error(f'In template {error.filename}, line {error.lineno}')
    current_app.logger.error(traceback.format_exc())
    return render_template('error.html', message="Template syntax error."), 500


def register_error_handlers(app):
    app.register_error_handler(404, not_found_error)
    app.register_error_handler(500, internal_server_error)
    app.register_error_handler(401, not_authorised_error)
    app.register_error_handler(403, not_authorised_error)
    app.register_error_handler(EveAINoSessionTenant, no_tenant_selected_error)
    app.register_error_handler(KeyError, key_error_handler)
    app.register_error_handler(AttributeError, attribute_error_handler)
    app.register_error_handler(jinja2.TemplateNotFound, template_not_found_error)
    app.register_error_handler(jinja2.TemplateSyntaxError, template_syntax_error)
    app.register_error_handler(Exception, general_exception)