"""Tests for trade execution dry-run paths."""

import pytest

from coinhunter.services import trade_execution as te
from coinhunter.services.trade_common import set_dry_run


class TestMarketSellDryRun:
    def test_returns_dry_run_order(self, monkeypatch):
        set_dry_run(True)
        monkeypatch.setattr(
            te, "prepare_sell_quantity",
            lambda ex, sym, qty: ("BTC/USDT", 0.5, 60000.0, 30000.0)
        )
        order = te.market_sell(None, "BTCUSDT", 0.5, "dec-123")
        assert order["id"] == "dry-sell-dec-123"
        assert order["symbol"] == "BTC/USDT"
        assert order["amount"] == 0.5
        assert order["status"] == "closed"
        set_dry_run(False)


class TestMarketBuyDryRun:
    def test_returns_dry_run_order(self, monkeypatch):
        set_dry_run(True)
        monkeypatch.setattr(
            te, "prepare_buy_quantity",
            lambda ex, sym, amt: ("ETH/USDT", 1.0, 3000.0, 3000.0)
        )
        order = te.market_buy(None, "ETHUSDT", 100, "dec-456")
        assert order["id"] == "dry-buy-dec-456"
        assert order["symbol"] == "ETH/USDT"
        assert order["amount"] == 1.0
        assert order["status"] == "closed"
        set_dry_run(False)


class TestActionSellAll:
    def test_raises_when_balance_zero(self, monkeypatch):
        monkeypatch.setattr(te, "fetch_balances", lambda ex: {"BTC": 0})
        with pytest.raises(RuntimeError, match="balance is zero"):
            te.action_sell_all(None, "BTCUSDT", "dec-789", {})

    def test_dry_run_does_not_reconcile(self, monkeypatch):
        set_dry_run(True)
        monkeypatch.setattr(te, "fetch_balances", lambda ex: {"BTC": 0.5})
        monkeypatch.setattr(
            te, "market_sell",
            lambda ex, sym, qty, did: {"id": "dry-1", "amount": qty, "price": 60000.0, "cost": 30000.0, "status": "closed"}
        )
        monkeypatch.setattr(te, "reconcile_positions_with_exchange", lambda ex, hint=None: ([], {}))
        monkeypatch.setattr(te, "log_trade", lambda *a, **k: None)
        monkeypatch.setattr(te, "log_decision", lambda *a, **k: None)

        result = te.action_sell_all(None, "BTCUSDT", "dec-789", {"analysis": "test"})
        assert result["id"] == "dry-1"
        set_dry_run(False)


class TestActionBuy:
    def test_raises_when_insufficient_usdt(self, monkeypatch):
        monkeypatch.setattr(te, "fetch_balances", lambda ex: {"USDT": 10.0})
        with pytest.raises(RuntimeError, match="Insufficient USDT"):
            te.action_buy(None, "BTCUSDT", 50, "dec-abc", {})

    def test_dry_run_skips_save(self, monkeypatch):
        set_dry_run(True)
        monkeypatch.setattr(te, "fetch_balances", lambda ex: {"USDT": 100.0})
        monkeypatch.setattr(
            te, "market_buy",
            lambda ex, sym, amt, did: {"id": "dry-2", "amount": 0.01, "price": 50000.0, "cost": 500.0, "status": "closed"}
        )
        monkeypatch.setattr(te, "load_positions", lambda: [])
        monkeypatch.setattr(te, "upsert_position", lambda positions, pos: positions.append(pos))
        monkeypatch.setattr(te, "reconcile_positions_with_exchange", lambda ex, hint=None: ([], {}))
        monkeypatch.setattr(te, "log_trade", lambda *a, **k: None)
        monkeypatch.setattr(te, "log_decision", lambda *a, **k: None)

        result = te.action_buy(None, "BTCUSDT", 50, "dec-abc", {})
        assert result["id"] == "dry-2"
        set_dry_run(False)


class TestCommandBalances:
    def test_returns_balances(self, monkeypatch, capsys):
        monkeypatch.setattr(te, "fetch_balances", lambda ex: {"USDT": 100.0, "BTC": 0.5})
        result = te.command_balances(None)
        assert result == {"USDT": 100.0, "BTC": 0.5}
        captured = capsys.readouterr()
        assert '"USDT": 100.0' in captured.out


class TestCommandStatus:
    def test_returns_snapshot(self, monkeypatch, capsys):
        monkeypatch.setattr(te, "fetch_balances", lambda ex: {"USDT": 100.0})
        monkeypatch.setattr(te, "load_positions", lambda: [])
        monkeypatch.setattr(te, "build_market_snapshot", lambda ex: {"BTC/USDT": 50000.0})
        result = te.command_status(None)
        assert result["balances"]["USDT"] == 100.0
        captured = capsys.readouterr()
        assert '"balances"' in captured.out


class TestCommandOrders:
    def test_returns_orders(self, monkeypatch, capsys):
        orders = [{"id": "1", "symbol": "BTC/USDT"}]
        monkeypatch.setattr(te, "print_json", lambda d: None)
        ex = type("Ex", (), {"fetch_open_orders": lambda self: orders})()
        result = te.command_orders(ex)
        assert result == orders


class TestCommandOrderStatus:
    def test_returns_order(self, monkeypatch, capsys):
        order = {"id": "123", "status": "open"}
        monkeypatch.setattr(te, "print_json", lambda d: None)
        ex = type("Ex", (), {"fetch_order": lambda self, oid, sym: order})()
        result = te.command_order_status(ex, "BTCUSDT", "123")
        assert result == order


class TestCommandCancel:
    def test_dry_run_returns_early(self, monkeypatch):
        set_dry_run(True)
        monkeypatch.setattr(te, "log", lambda msg: None)
        result = te.command_cancel(None, "BTCUSDT", "123")
        assert result["dry_run"] is True
        set_dry_run(False)

    def test_cancel_by_order_id(self, monkeypatch):
        set_dry_run(False)
        monkeypatch.setattr(te, "print_json", lambda d: None)
        ex = type("Ex", (), {"cancel_order": lambda self, oid, sym: {"id": oid, "status": "canceled"}})()
        result = te.command_cancel(ex, "BTCUSDT", "123")
        assert result["status"] == "canceled"

    def test_cancel_latest_when_no_order_id(self, monkeypatch):
        set_dry_run(False)
        monkeypatch.setattr(te, "print_json", lambda d: None)
        ex = type("Ex", (), {
            "fetch_open_orders": lambda self, sym: [{"id": "999"}, {"id": "888"}],
            "cancel_order": lambda self, oid, sym: {"id": oid, "status": "canceled"},
        })()
        result = te.command_cancel(ex, "BTCUSDT", None)
        assert result["id"] == "888"

    def test_cancel_raises_when_no_open_orders(self, monkeypatch):
        set_dry_run(False)
        ex = type("Ex", (), {"fetch_open_orders": lambda self, sym: []})()
        with pytest.raises(RuntimeError, match="No open orders"):
            te.command_cancel(ex, "BTCUSDT", None)


class TestPrintJson:
    def test_outputs_sorted_json(self, capsys):
        te.print_json({"b": 2, "a": 1})
        captured = capsys.readouterr()
        assert '"a": 1' in captured.out
        assert '"b": 2' in captured.out