"""
tests/test_fetcher.py
---------------------
Tests for core/fetcher.py — all HTTP calls are mocked.
"""

import json
from unittest.mock import MagicMock, patch

import pytest
import requests as req_lib

from core.fetcher import (
    fetch_all,
    fetch_megamillions_ny,
    fetch_megamillions_tx,
    fetch_powerball_ny,
)
from db.models import get_draw_count, get_draws, get_game_by_name, get_last_fetch_log

# ── Mock data ─────────────────────────────────────────────────────────────────

PB_NY_RECORDS = [
    {"draw_date": "2024-01-01T00:00:00.000", "winning_numbers": "01 13 36 61 69 07", "multiplier": "2"},
    {"draw_date": "2024-01-03T00:00:00.000", "winning_numbers": "05 20 45 60 68 15", "multiplier": "3"},
]

MM_NY_RECORDS = [
    {"draw_date": "2024-02-01T00:00:00.000", "winning_numbers": "07 11 22 29 38", "mega_ball": "04", "multiplier": "2"},
    {"draw_date": "2024-02-05T00:00:00.000", "winning_numbers": "03 18 33 44 67", "mega_ball": "22", "multiplier": "5"},
]

MM_TX_CSV = (
    "Game Name,Month,Day,Year,Num1,Num2,Num3,Num4,Num5,Mega Ball,Megaplier\n"
    "Mega Millions,03,07,2024,10,20,30,40,50,12,3\n"
    "Mega Millions,03,12,2024,15,25,35,45,55,07,4\n"
)


def _json_resp(data, status=200):
    """Mock requests.Response returning JSON."""
    m = MagicMock()
    m.status_code = status
    m.raise_for_status = MagicMock()
    m.json.return_value = data
    m.text = json.dumps(data)
    return m


def _text_resp(text, status=200):
    """Mock requests.Response returning plain text (CSV)."""
    m = MagicMock()
    m.status_code = status
    m.raise_for_status = MagicMock()
    m.text = text
    return m


# ── Powerball NY ──────────────────────────────────────────────────────────────

def test_pb_ny_inserts_records(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=[_json_resp(PB_NY_RECORDS), _json_resp([])]):
        result = fetch_powerball_ny()

    assert result["status"] == "success"
    assert result["added"] == 2
    assert result["skipped"] == 0
    game = get_game_by_name("Powerball")
    assert get_draw_count(game["id"]) == 2


def test_pb_ny_skips_duplicates(tmp_db):
    for _ in range(2):
        with patch("core.fetcher.requests.get", side_effect=[_json_resp(PB_NY_RECORDS), _json_resp([])]):
            result = fetch_powerball_ny()

    assert result["added"] == 0
    assert result["skipped"] == 2


def test_pb_ny_parses_numbers_and_bonus(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=[_json_resp(PB_NY_RECORDS[:1]), _json_resp([])]):
        fetch_powerball_ny()

    game = get_game_by_name("Powerball")
    draws = get_draws(game["id"])
    assert draws[0]["draw_date"] == "2024-01-01"
    assert draws[0]["numbers"] == "1,13,36,61,69"
    assert draws[0]["bonus"] == "7"
    assert draws[0]["multiplier"] == "2"
    assert draws[0]["source"] == "powerball_ny"


def test_pb_ny_network_error(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=req_lib.RequestException("timeout")):
        result = fetch_powerball_ny()

    assert result["status"] == "error"
    assert result["added"] == 0
    assert "timeout" in result["message"]
    log = get_last_fetch_log("powerball_ny")
    assert log["status"] == "error"


def test_pb_ny_malformed_row_skipped(tmp_db):
    """Row with too few numbers is skipped without crashing."""
    bad_records = [{"draw_date": "2024-01-01T00:00:00.000", "winning_numbers": "01 13 36"}]
    with patch("core.fetcher.requests.get", side_effect=[_json_resp(bad_records), _json_resp([])]):
        result = fetch_powerball_ny()

    assert result["status"] == "success"
    assert result["added"] == 0


# ── Mega Millions NY ──────────────────────────────────────────────────────────

def test_mm_ny_inserts_records(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=[_json_resp(MM_NY_RECORDS), _json_resp([])]):
        result = fetch_megamillions_ny()

    assert result["status"] == "success"
    assert result["added"] == 2
    assert result["skipped"] == 0


def test_mm_ny_skips_duplicates(tmp_db):
    for _ in range(2):
        with patch("core.fetcher.requests.get", side_effect=[_json_resp(MM_NY_RECORDS), _json_resp([])]):
            result = fetch_megamillions_ny()

    assert result["added"] == 0
    assert result["skipped"] == 2


def test_mm_ny_parses_mega_ball(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=[_json_resp(MM_NY_RECORDS[:1]), _json_resp([])]):
        fetch_megamillions_ny()

    game = get_game_by_name("Mega Millions")
    draws = get_draws(game["id"])
    assert draws[0]["bonus"] == "4"
    assert draws[0]["numbers"] == "7,11,22,29,38"


def test_mm_ny_network_error(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=req_lib.RequestException("refused")):
        result = fetch_megamillions_ny()

    assert result["status"] == "error"
    log = get_last_fetch_log("megamillions_ny")
    assert log["status"] == "error"


# ── Mega Millions TX ──────────────────────────────────────────────────────────

def test_mm_tx_inserts_records(tmp_db):
    with patch("core.fetcher.requests.get", return_value=_text_resp(MM_TX_CSV)):
        result = fetch_megamillions_tx()

    assert result["status"] == "success"
    assert result["added"] == 2
    assert result["skipped"] == 0


def test_mm_tx_skips_duplicates(tmp_db):
    for _ in range(2):
        with patch("core.fetcher.requests.get", return_value=_text_resp(MM_TX_CSV)):
            result = fetch_megamillions_tx()

    assert result["added"] == 0
    assert result["skipped"] == 2


def test_mm_tx_parses_date_and_numbers(tmp_db):
    with patch("core.fetcher.requests.get", return_value=_text_resp(MM_TX_CSV)):
        fetch_megamillions_tx()

    game = get_game_by_name("Mega Millions")
    draws = get_draws(game["id"], order="ASC")
    assert draws[0]["draw_date"] == "2024-03-07"
    assert draws[0]["numbers"] == "10,20,30,40,50"
    assert draws[0]["bonus"] == "12"
    assert draws[0]["multiplier"] == "3"


def test_mm_tx_cross_source_dedup(tmp_db):
    """TX record on same date as an already-inserted NY record is skipped."""
    with patch("core.fetcher.requests.get", side_effect=[_json_resp(MM_NY_RECORDS[:1]), _json_resp([])]):
        fetch_megamillions_ny()  # inserts 2024-02-01

    overlapping_csv = (
        "Game Name,Month,Day,Year,Num1,Num2,Num3,Num4,Num5,Mega Ball,Megaplier\n"
        "Mega Millions,02,01,2024,07,11,22,29,38,4,2\n"
    )
    with patch("core.fetcher.requests.get", return_value=_text_resp(overlapping_csv)):
        result = fetch_megamillions_tx()

    assert result["skipped"] == 1
    assert result["added"] == 0


def test_mm_tx_network_error(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=req_lib.RequestException("connect")):
        result = fetch_megamillions_tx()

    assert result["status"] == "error"
    assert result["added"] == 0


def test_mm_tx_no_header_row(tmp_db):
    """CSV without a header row still parses correctly."""
    no_header = "Mega Millions,03,07,2024,10,20,30,40,50,12,3\n"
    with patch("core.fetcher.requests.get", return_value=_text_resp(no_header)):
        result = fetch_megamillions_tx()

    assert result["added"] == 1


# ── fetch_all ─────────────────────────────────────────────────────────────────

def test_fetch_all_returns_three_sources(tmp_db):
    # Both NY APIs stop after 1 call (2 records < NY_API_LIMIT), so 3 calls total
    with patch("core.fetcher.requests.get", side_effect=[
        _json_resp(PB_NY_RECORDS),
        _json_resp(MM_NY_RECORDS),
        _text_resp(MM_TX_CSV),
    ]):
        results = fetch_all()

    assert len(results) == 3
    sources = {r["source"] for r in results}
    assert sources == {"powerball_ny", "megamillions_ny", "megamillions_tx"}


def test_fetch_all_aggregated_counts(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=[
        _json_resp(PB_NY_RECORDS),
        _json_resp(MM_NY_RECORDS),
        _text_resp(MM_TX_CSV),
    ]):
        results = fetch_all()

    by_source = {r["source"]: r for r in results}
    assert by_source["powerball_ny"]["added"] == 2
    assert by_source["megamillions_ny"]["added"] == 2
    assert by_source["megamillions_tx"]["added"] == 2


def test_fetch_all_continues_after_one_error(tmp_db):
    """If one source errors, the remaining sources still complete."""
    error_result  = {"source": "powerball_ny",    "added": 0, "skipped": 0, "status": "error", "message": "timeout"}
    ny_result     = {"source": "megamillions_ny", "added": 2, "skipped": 0, "status": "success", "message": None}
    tx_result     = {"source": "megamillions_tx", "added": 2, "skipped": 0, "status": "success", "message": None}

    with (
        patch("core.fetcher.fetch_powerball_ny",    return_value=error_result),
        patch("core.fetcher.fetch_megamillions_ny", return_value=ny_result),
        patch("core.fetcher.fetch_megamillions_tx", return_value=tx_result),
    ):
        results = fetch_all()

    assert len(results) == 3
    by_source = {r["source"]: r for r in results}
    assert by_source["powerball_ny"]["status"] == "error"
    assert by_source["megamillions_ny"]["status"] == "success"
    assert by_source["megamillions_tx"]["status"] == "success"


# ── Fetch log ─────────────────────────────────────────────────────────────────

def test_fetch_log_written_on_success(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=[_json_resp(PB_NY_RECORDS), _json_resp([])]):
        fetch_powerball_ny()

    log = get_last_fetch_log("powerball_ny")
    assert log is not None
    assert log["status"] == "success"
    assert log["added"] == 2
    assert log["skipped"] == 0


def test_fetch_log_written_on_error(tmp_db):
    with patch("core.fetcher.requests.get", side_effect=req_lib.RequestException("fail")):
        fetch_powerball_ny()

    log = get_last_fetch_log("powerball_ny")
    assert log is not None
    assert log["status"] == "error"