import tempfile
import unittest
from pathlib import Path

from coffer.ledger import InsufficientCredit, TransferNotAllowed
from coffer.product import CofferProduct, ProductError
from coffer.public_ledger import tx_public
from coffer.units import human_account


class PeopleTests(unittest.TestCase):
    def setUp(self):
        self.tmp = tempfile.TemporaryDirectory()
        self.db = Path(self.tmp.name) / "coffer.db"
        self.p = CofferProduct(self.db)
        self.p.bootstrap_opening_books()
        self.p.record_build_contract()
        self.p.signup_flow("atlas")  # an agent: 40 granted, 20 seat charged

    def tearDown(self):
        self.p.close()
        self.tmp.cleanup()

    def test_human_signup_grant_once(self):
        r = self.p.human_signup("sam", 101)
        self.assertEqual(r["account_id"], "human:sam")
        self.assertEqual(r["balance"]["promotional"], 40.0)
        self.assertTrue(self.p.human_signup("sam", 101)["already"])
        self.assertEqual(self.p.balance("human:sam")["spendable"], 40.0)
        with self.assertRaises(ValueError):
            human_account("Sam Smith <sam@example.com>")

    def test_grant_keyed_on_gitea_id_rename_and_concurrency(self):
        self.p.human_signup("sam", 101)
        with self.assertRaises(ProductError):  # rename: the Gitea id already had its grant
            self.p.human_signup("sam-renamed", 101)
        self.assertEqual(self.p.balance("human:sam-renamed")["spendable"], 0.0)
        import threading
        results, errors = [], []
        def claim():
            p = CofferProduct(self.db)  # separate connection, like separate platform requests
            try:
                results.append(p.human_signup("ana", 555)["already"])
            except Exception as exc:  # noqa: BLE001
                errors.append(exc)
            finally:
                p.close()
        threads = [threading.Thread(target=claim) for _ in range(8)]
        [t.start() for t in threads]
        [t.join() for t in threads]
        self.p.close()
        self.p = CofferProduct(self.db)
        self.assertEqual(self.p.balance("human:ana")["spendable"], 40.0)
        self.assertEqual(results.count(False), 1, (results, errors))

    def test_agent_only_entry_points_reject_people(self):
        self.p.human_signup("sam", 101)
        for fn in (lambda: self.p.grant_signup("human:sam"), lambda: self.p.top_up("human:sam", 5),
                   lambda: self.p.charge_subscription("human:sam"), lambda: self.p.signup_flow("human:sam")):
            with self.assertRaises(ValueError):
                fn()
        self.assertEqual(self.p.balance("human:sam")["spendable"], 40.0)

    def test_payment_ref_bound_to_request(self):
        self.p.human_signup("sam", 101)
        self.p.human_signup("kim", 102)
        self.p.pay("human:sam", "agent:atlas", 2, reason="x", ref="of-r")
        for args in (("human:kim", "agent:atlas", 2), ("human:sam", "human:kim", 2), ("human:sam", "agent:atlas", 3)):
            with self.assertRaises(ProductError):
                self.p.pay(*args, reason="x", ref="of-r")
        for bad in (float("nan"), float("inf"), "5", True):
            with self.assertRaises(ProductError):
                self.p.pay("human:sam", "agent:atlas", bad, reason="x", ref="of-bad")

    def test_no_purchase_api(self):
        self.assertFalse(hasattr(self.p, "buy_credits"))

    def test_human_pays_agent_with_granted_credit(self):
        self.p.human_signup("sam", 101)
        before = self.p.balance("agent:atlas")
        r = self.p.pay("human:sam", "agent:atlas", 12.5, reason="Research brief", ref="of-1")
        self.assertEqual(r["tx"]["kind"], "payment")
        self.assertEqual(self.p.balance("human:sam")["spendable"], 27.5)
        after = self.p.balance("agent:atlas")
        self.assertAlmostEqual(after["promotional"] - before["promotional"], 12.5)  # kind preserved
        self.assertTrue(self.p.pay("human:sam", "agent:atlas", 12.5, reason="x", ref="of-1")["duplicate"])
        self.p.close()
        self.p = CofferProduct(self.db)  # survives a reload
        self.assertEqual(self.p.balance("human:sam")["spendable"], 27.5)
        self.assertTrue(self.p.pay("human:sam", "agent:atlas", 12.5, reason="x", ref="of-1")["duplicate"])

    def test_agent_pays_human_and_people_pay_each_other(self):
        self.p.human_signup("sam", 101)
        self.p.human_signup("kim", 102)
        self.p.pay("agent:atlas", "human:sam", 5, reason="bounty", ref="of-2")
        self.assertEqual(self.p.balance("human:sam")["spendable"], 45.0)
        self.p.pay("human:sam", "human:kim", 10, reason="thanks", ref="of-3")
        self.assertEqual(self.p.balance("human:kim")["spendable"], 50.0)
        self.assertEqual(self.p.balance("human:sam")["spendable"], 35.0)

    def test_rules(self):
        self.p.human_signup("sam", 101)
        self.p.signup_flow("bolt")
        with self.assertRaises(TransferNotAllowed):
            self.p.pay("agent:atlas", "agent:bolt", 1, reason="x", ref="of-4")
        with self.assertRaises(TransferNotAllowed):
            self.p.pay("human:sam", "company:coffer", 1, reason="x", ref="of-5")
        with self.assertRaises(ProductError):
            self.p.pay("human:sam", "agent:atlas", 5000, reason="x", ref="of-6")
        with self.assertRaises(InsufficientCredit):
            self.p.pay("human:sam", "agent:atlas", 41, reason="x", ref="of-7")

    def test_public_ledger_shows_handles_only(self):
        self.p.human_signup("sam", 101)
        self.p.pay("human:sam", "agent:atlas", 2, reason="Review", ref="of-8")
        pub = [tx_public(t) for t in self.p.history()]
        self.assertIn("human:sam", repr(pub))
        self.assertEqual(next(t for t in pub if t["kind"] == "payment")["meta"].get("offer"), "of-8")


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