#!/usr/bin/env python3
"""test_invite_handler.py: Unit tests for invite code handler, usage parser, and settings RPA."""

import importlib.util
import json
import sys
import unittest
from pathlib import Path
from unittest.mock import MagicMock, patch

REPO_ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(REPO_ROOT / "bin"))

import invite
from invite_handler import InviteCodeInfo, InviteHandler, RedemptionResult, salvage_blocked_node
from settings_rpa import NodeUsage, SettingsRPA


class TestInviteCodeValidation(unittest.TestCase):
    def test_normalize_valid_codes(self):
        self.assertEqual(invite.normalize_code("REDCJ7"), "REDCJ7")
        self.assertEqual(invite.normalize_code("  redcj7  "), "REDCJ7")
        self.assertEqual(invite.normalize_code("81mdir"), "81MDIR")
        self.assertEqual(invite.normalize_code("F4BGHN"), "F4BGHN")
        self.assertEqual(invite.normalize_code("14ogf2"), "14OGF2")

    def test_normalize_invalid_codes(self):
        self.assertIsNone(invite.normalize_code("SHORT"))
        self.assertIsNone(invite.normalize_code("TOOLONG123"))
        self.assertIsNone(invite.normalize_code("INV@L!"))
        self.assertIsNone(invite.normalize_code(""))
        self.assertIsNone(invite.normalize_code(None))
        self.assertIsNone(invite.normalize_code(123456))


class TestUsageParser(unittest.TestCase):
    def test_parse_usage_blocked_node(self):
        sample_646 = """
Settings
General
Meta Account
Password, security, personal details
Usage
Free plan
Weekly limit resets on Oct 9
100% used
Additional tokens
Never expires
100% used (0 tokens left)
Upgrade
Language
Appearance
"""
        parsed = invite.parse_usage_text(sample_646)
        self.assertEqual(parsed["weekly_reset"], "Oct 9")
        self.assertEqual(parsed["weekly_used_pct"], 100)
        self.assertEqual(parsed["additional_expires"], "Never expires")
        self.assertEqual(parsed["additional_used_pct"], 100)
        self.assertEqual(parsed["additional_left"], "0 tokens left")

    def test_parse_usage_active_pip(self):
        sample_pip = """
Usage
Free plan
Weekly limit resets on Oct 10
100% used
Additional tokens
Never expires
10% used (901M tokens left)
Upgrade
"""
        parsed = invite.parse_usage_text(sample_pip)
        self.assertEqual(parsed["weekly_reset"], "Oct 10")
        self.assertEqual(parsed["weekly_used_pct"], 100)
        self.assertEqual(parsed["additional_expires"], "Never expires")
        self.assertEqual(parsed["additional_used_pct"], 10)
        self.assertEqual(parsed["additional_left"], "901M tokens left")
        self.assertTrue(parsed["has_redeemed"])

    def test_parse_usage_fresh_account_no_extra_tokens(self):
        sample_fresh = """
Usage
Free plan
Weekly limit resets on Oct 12
15% used
Redeem invite code
"""
        parsed = invite.parse_usage_text(sample_fresh)
        self.assertEqual(parsed["weekly_reset"], "Oct 12")
        self.assertEqual(parsed["weekly_used_pct"], 15)
        self.assertIsNone(parsed["additional_left"])
        self.assertFalse(parsed["has_redeemed"])

    def test_parse_usage_empty(self):
        parsed = invite.parse_usage_text("")
        self.assertIsNone(parsed["weekly_reset"])
        self.assertIsNone(parsed["weekly_used_pct"])
        self.assertIsNone(parsed["additional_left"])
        self.assertFalse(parsed["has_redeemed"])


class TestInviteHandlerMocked(unittest.TestCase):
    @patch("invite.get_cdp_ws")
    @patch("invite.cdp_evaluate")
    def test_get_invite_api_success(self, mock_eval, mock_ws):
        mock_ws.return_value = (MagicMock(), MagicMock())
        mock_eval.return_value = {
            "status": 200,
            "data": {
                "code": "REDCJ7",
                "uses_remaining": 30,
                "use_count": 0,
                "has_redeemed_invite_code": True,
                "reward": None,
            },
        }

        res = invite.get_invite("646")
        self.assertTrue(res["ok"])
        self.assertEqual(res["code"], "REDCJ7")
        self.assertTrue(res["has_redeemed"])
        self.assertEqual(res["uses_remaining"], 30)

    @patch("invite.get_cdp_ws")
    @patch("invite.cdp_evaluate")
    def test_redeem_invite_already_redeemed(self, mock_eval, mock_ws):
        mock_ws.return_value = (MagicMock(), MagicMock())
        mock_eval.return_value = {
            "status": 400,
            "ok": False,
            "data": {
                "success": False,
                "reason": "already_redeemed",
                "detail": "You’ve already redeemed an invite code.",
            },
        }

        res = invite.redeem_invite("muse", "REDCJ7")
        self.assertFalse(res["ok"])
        self.assertEqual(res["reason"], "already_redeemed")
        self.assertIn("already redeemed", res["detail"])

    @patch("invite.get_cdp_ws")
    @patch("invite.cdp_evaluate")
    def test_redeem_invite_success(self, mock_eval, mock_ws):
        mock_ws.return_value = (MagicMock(), MagicMock())
        mock_eval.return_value = {
            "status": 200,
            "ok": True,
            "data": {
                "success": True,
                "redemptionStatus": "redeemed",
                "detail": "Congratulations!",
            },
        }

        res = invite.redeem_invite("def", "REDCJ7")
        self.assertTrue(res["ok"])
        self.assertEqual(res["redemption_status"], "redeemed")

    def test_salvage_blocked_node_diagnosis(self):
        with patch.object(InviteHandler, "find_code") as mock_find:
            mock_find.return_value = InviteCodeInfo(
                node="646",
                code="REDCJ7",
                uses_remaining=30,
                use_count=0,
                max_uses=30,
                has_redeemed=True,
                invite_state="ELIGIBLE",
                reward=None,
                method_used="api",
            )
            # All peers already redeemed
            res = salvage_blocked_node("646")
            self.assertFalse(res["success"])
            self.assertEqual(res["invite_code"], "REDCJ7")
            self.assertIn("An onboarding agent or fresh client profile must redeem this code", res["error"])


if __name__ == "__main__":
    unittest.main()