import os
import tempfile
import time
import unittest

from app import create_app, db
from config import TestingConfig


class ScalesRoutesConfig(TestingConfig):
    _TMP_DIR = tempfile.mkdtemp(prefix="wesp-scales-routes-tests-")
    SQLALCHEMY_DATABASE_URI = f"sqlite:///{os.path.join(_TMP_DIR, 'recipes_test.db')}"
    SQLALCHEMY_BINDS = {"reports": f"sqlite:///{os.path.join(_TMP_DIR, 'reports_test.db')}"}
    AUTH_LOGIN = "scales-admin"
    AUTH_PASSWORD = "scales-secret"
    SIMULATION_MODE = True
    READ_INTERVAL = 0.01
    KIOSK_ENFORCE_PAIRED_ONLY = True


class ScalesRoutesTests(unittest.TestCase):
    def setUp(self) -> None:
        self.app = create_app(ScalesRoutesConfig)
        self.client = self.app.test_client()
        self.ctx = self.app.app_context()
        self.ctx.push()
        db.create_all()

        self.client.get("/scales")
        self._pair_terminal()

    def _pair_terminal(self) -> None:
        pair = self.client.post("/api/kiosk/pair-token")
        self.assertEqual(pair.status_code, 200)
        token = pair.get_json().get("token")
        self.assertTrue(token)
        self.client.get(f"/api/kiosk/pair/confirm?token={token}")
        confirm = self.client.post(
            "/api/kiosk/pair/confirm",
            data={"token": token},
            content_type="application/x-www-form-urlencoded",
        )
        self.assertEqual(confirm.status_code, 302)

    def tearDown(self) -> None:
        # stop global reader thread between tests
        from app.routes import scales as scales_module

        reader = getattr(scales_module, "_scales_reader", None)
        if reader is not None:
            reader.stop()
            scales_module._scales_reader = None

        db.session.remove()
        db.drop_all()
        self.ctx.pop()

    def test_current_weight_and_tare(self) -> None:
        weight_resp = self.client.get("/current_weight")
        self.assertEqual(weight_resp.status_code, 200)
        wj = weight_resp.get_json()
        self.assertIn("weight", wj)
        self.assertTrue(wj.get("simulation_mode"))
        self.assertTrue(wj.get("hx711_ok"))

        for _ in range(5):
            _ = self.client.get("/current_weight")
        time.sleep(0.1)
        tare_resp = self.client.post("/tare", json={})
        self.assertEqual(tare_resp.status_code, 200)
        body = tare_resp.get_json()
        self.assertEqual(body.get("status"), "success")
        self.assertIn("new_zero", body)

    def test_calibrate_validation_and_success(self) -> None:
        missing = self.client.post("/calibrate", json={})
        self.assertEqual(missing.status_code, 400)
        self.assertTrue(missing.get_json().get("error"))

        invalid = self.client.post("/calibrate", json={"calibration_factor": "oops"})
        self.assertEqual(invalid.status_code, 400)
        self.assertTrue(invalid.get_json().get("error"))

        ok = self.client.post("/calibrate", json={"calibration_factor": 1.1})
        self.assertEqual(ok.status_code, 200)
        self.assertEqual(ok.get_json().get("calibration_factor"), 1.1)

    def test_calibration_wizard_and_raw_data(self) -> None:
        step1 = self.client.post(
            "/calibrate",
            json={"target_weight": 50},
            headers={},
        )
        self.assertIn(step1.status_code, (200, 400))
        if step1.status_code == 400:
            # no samples yet, warm up and retry once
            _ = self.client.get("/current_weight")
            step1 = self.client.post(
                "/calibrate",
                json={"target_weight": 50},
                headers={},
            )
        if step1.status_code == 400:
            time.sleep(0.1)
            step1 = self.client.post(
                "/calibrate",
                json={"target_weight": 50},
                headers={},
            )
        self.assertEqual(step1.status_code, 200)
        self.assertEqual(step1.get_json().get("status"), "confirm")

        from app.routes import scales as scales_module

        reader = scales_module._get_reader()
        reader.adjust_simulation_weight(50)
        for _ in range(5):
            _ = self.client.get("/current_weight")
        step2 = self.client.post("/calibrate/continue")
        if step2.status_code == 400:
            time.sleep(0.15)
            for _ in range(5):
                _ = self.client.get("/current_weight")
            step2 = self.client.post("/calibrate/continue")
        self.assertEqual(step2.status_code, 200)
        self.assertEqual(step2.get_json().get("status"), "success")
        self.assertIn("calibration_factor", step2.get_json())

        raw_resp = self.client.get("/current_raw_data")
        self.assertEqual(raw_resp.status_code, 200)
        raw = raw_resp.get_json()
        self.assertIn("last_50_raw", raw)
        self.assertIn("readings_history", raw)
        self.assertIn("weight_history", raw)

    def test_requires_token_or_session_when_public_enabled(self) -> None:
        # Не localhost в Host и REMOTE_ADDR — иначе require_paired_terminal всегда пропускает.
        ext = {"REMOTE_ADDR": "198.51.100.10", "HTTP_HOST": "198.51.100.42"}
        anon = self.app.test_client()
        bad = anon.get("/current_weight", environ_overrides=ext)
        self.assertEqual(bad.status_code, 401)
        anon.get("/scales", environ_overrides=ext)
        # pair-token с удалённого хоста — только для администратора (см. can_issue_kiosk_access_link).
        login = anon.post(
            "/api/auth/login",
            json={"login": ScalesRoutesConfig.AUTH_LOGIN, "password": ScalesRoutesConfig.AUTH_PASSWORD},
            environ_overrides=ext,
        )
        self.assertEqual(login.status_code, 200)
        pair_resp = anon.post("/api/kiosk/pair-token", environ_overrides=ext)
        self.assertEqual(pair_resp.status_code, 200)
        pair = pair_resp.get_json()
        self.assertIn("token", pair)
        anon.get(
            f"/api/kiosk/pair/confirm?token={pair['token']}",
            environ_overrides=ext,
        )
        anon.post(
            "/api/kiosk/pair/confirm",
            data={"token": pair["token"]},
            content_type="application/x-www-form-urlencoded",
            environ_overrides=ext,
        )
        good = anon.get("/current_weight", environ_overrides=ext)
        self.assertEqual(good.status_code, 200)


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