"""REQ-104: environment JSON schema + qa/prod/dr bindings + load()."""
import json
import sys
from pathlib import Path

import jsonschema
import pytest

ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(ROOT))

from core.environment_check import load, check

ENV_DIR = ROOT / "core" / "environments"
SCHEMA = ROOT / "schemas" / "environment.schema.json"

ENV_FILES = ["dev.json", "qa.json", "prod.json", "dr.json"]


def _schema():
    return json.loads(SCHEMA.read_text())


@pytest.mark.parametrize("env_file", ENV_FILES)
def test_env_file_validates_against_schema(env_file):
    env = json.loads((ENV_DIR / env_file).read_text())
    jsonschema.validate(env, _schema())


def test_dev_env_has_expected_fields():
    env = load("dev")
    assert env["name"] == "dev"
    assert env["account_id"] == "000000000000"
    assert env["region"] == "us-east-1"
    assert env["autonomy"] == "full"
    assert env["confidence_threshold"] == 0.50
    assert "state_backend" in env
    assert "bucket" in env["state_backend"]
    assert "network" in env


def test_qa_env_attested_with_075_threshold():
    env = load("qa")
    assert env["autonomy"] == "attested"
    assert env["confidence_threshold"] == 0.75


def test_prod_env_attested_with_090_threshold():
    env = load("prod")
    assert env["autonomy"] == "attested"
    assert env["confidence_threshold"] == 0.90


def test_dr_env_attested_with_095_threshold():
    env = load("dr")
    assert env["autonomy"] == "attested"
    assert env["confidence_threshold"] == 0.95


def test_load_unknown_env_raises():
    with pytest.raises(FileNotFoundError):
        load("nonexistent")


def test_load_returns_dict():
    env = load("dev")
    assert isinstance(env, dict)


def test_placeholder_account_warning_for_non_dev(capsys):
    """A stderr warning is emitted when account_id is the placeholder and env != dev."""
    load("qa")
    captured = capsys.readouterr()
    assert "placeholder account_id" in captured.err
    assert "qa" in captured.err


def test_no_warning_for_dev_placeholder(capsys):
    load("dev")
    captured = capsys.readouterr()
    assert "placeholder account_id" not in captured.err


def test_check_still_works_for_dev():
    ok, msg = check(env_name="dev")
    assert ok is True


def test_check_fails_for_unknown_env():
    ok, msg = check(env_name="nonexistent")
    assert ok is False
    assert "nonexistent" in msg


def test_account_id_is_12_digits():
    for env_file in ENV_FILES:
        env = json.loads((ENV_DIR / env_file).read_text())
        assert len(env["account_id"]) == 12
        assert env["account_id"].isdigit()