"""Task definitions and graders for the Core Identity environment."""

from typing import List, Dict, Any
from dataclasses import dataclass
import re
from datetime import datetime, timedelta


@dataclass
class CoreIdentityTask:
    task_id: str
    name: str
    description: str
    task_type: str
    difficulty: str
    document: Dict[str, Any] | None
    credentials: Dict[str, Any] | None
    profile: Dict[str, Any] | None
    expected_verification: bool
    required_checks: List[str]
    challenge_data: Dict[str, Any]
    max_steps: int


@dataclass
class GradingResult:
    accuracy: float
    completeness: float
    score: float
    feedback: str


class CoreIdentityTaskEvaluator:
    """Evaluate responses for Core Identity tasks."""

    def __init__(self, task: CoreIdentityTask):
        self.task = task

    def grade(self, response: Dict[str, Any]) -> GradingResult:
        verification = response.get("verification", {})
        verified = verification.get("verified", False)
        issues = verification.get("issues", [])
        checks_performed = verification.get("checks_performed", {})

        expected = self.task.expected_verification

        accuracy = 1.0 if verified == expected else 0.0

        performed_count = sum(1 for v in checks_performed.values() if v)
        required_count = len(self.task.required_checks)
        completeness = performed_count / required_count if required_count > 0 else 0.5

        if accuracy == 1.0:
            base_score = 0.7
            completeness_bonus = completeness * 0.3
        else:
            base_score = 0.0
            completeness_bonus = 0.0

        score = base_score + completeness_bonus

        feedback = f"Verification: {verified}, Expected: {expected}, Checks: {performed_count}/{required_count}"

        return GradingResult(
            accuracy=accuracy,
            completeness=completeness,
            score=score,
            feedback=feedback,
        )


def create_document_verification_task() -> CoreIdentityTask:
    return CoreIdentityTask(
        task_id="doc_verify_passport",
        name="Passport Verification",
        description="Verify the authenticity of a passport document",
        task_type="document_verification",
        difficulty="medium",
        document={
            "document_type": "passport",
            "document_number": "P12345678",
            "full_name": "John Smith",
            "date_of_birth": "1990-01-15",
            "expiry_date": "2030-01-15",
            "issuing_country": "United States",
        },
        credentials=None,
        profile=None,
        expected_verification=True,
        required_checks=["expiry_check", "format_check", "country_validation"],
        challenge_data={
            "valid_passport": True,
            "expired_document": False,
        },
        max_steps=5
    )


def create_document_fraud_task() -> CoreIdentityTask:
    return CoreIdentityTask(
        task_id="doc_verify_fake_id",
        name="Fake ID Detection",
        description="Detect a potentially fraudulent ID document",
        task_type="document_verification",
        difficulty="hard",
        document={
            "document_type": "drivers_license",
            "document_number": "DL999999999",
            "full_name": "Jane Doe",
            "date_of_birth": "1985-06-20",
            "expiry_date": "2025-06-20",
            "issuing_country": "California",
        },
        credentials=None,
        profile=None,
        expected_verification=False,
        required_checks=["expiry_check", "format_check", "country_validation", "fraud_indicators"],
        challenge_data={
            "valid_passport": False,
            "expired_document": True,
            "suspicious_number": True,
            "fraud_indicators": ["expired", "invalid_format"],
        },
        max_steps=8
    )


def create_authentication_task() -> CoreIdentityTask:
    return CoreIdentityTask(
        task_id="auth_valid_creds",
        name="Credential Authentication",
        description="Verify user credentials for authentication",
        task_type="credential_authentication",
        difficulty="easy",
        document=None,
        credentials={
            "username": "john.smith@email.com",
            "password": "SecureP@ss123",
        },
        profile=None,
        expected_verification=True,
        required_checks=["username_format", "password_strength"],
        challenge_data={
            "valid_credentials": True,
            "account_locked": False,
        },
        max_steps=3
    )


def create_authentication_fraud_task() -> CoreIdentityTask:
    return CoreIdentityTask(
        task_id="auth_brute_force",
        name="Brute Force Detection",
        description="Detect and block brute force authentication attempts",
        task_type="credential_authentication",
        difficulty="hard",
        document=None,
        credentials={
            "username": "admin@company.com",
            "password": "wrong_password",
        },
        profile=None,
        expected_verification=False,
        required_checks=["username_format", "password_strength", "attempt_tracking", "ip_validation"],
        challenge_data={
            "valid_credentials": False,
            "failed_attempts": 5,
            "suspicious_ip": True,
            "time_window": "5 minutes",
        },
        max_steps=6
    )


def create_profile_task() -> CoreIdentityTask:
    return CoreIdentityTask(
        task_id="profile_update",
        name="Profile Update Validation",
        description="Validate a user profile update request",
        task_type="profile_management",
        difficulty="medium",
        document=None,
        credentials=None,
        profile={
            "user_id": "user_12345",
            "full_name": "Alice Johnson",
            "email": "alice.j@newdomain.com",
            "phone": "+1-555-987-6543",
            "date_of_birth": "1992-03-10",
        },
        expected_verification=True,
        required_checks=["email_format", "phone_format", "age_verification"],
        challenge_data={
            "valid_request": True,
            "requested_changes": ["email", "phone"],
        },
        max_steps=5
    )


def get_all_tasks() -> List[CoreIdentityTask]:
    return [
        create_document_verification_task(),
        create_document_fraud_task(),
        create_authentication_task(),
        create_authentication_fraud_task(),
        create_profile_task(),
    ]


def get_task_by_id(task_id: str) -> CoreIdentityTask:
    for task in get_all_tasks():
        if task.task_id == task_id:
            return task
    raise ValueError(f"Task not found: {task_id}")