"""REQ-330 tests: core.env.synthesize_local_env — local env synthesizer.

Verifies the synthesizer:
  - reads a contract YAML and produces a local env dict
  - the dict mirrors the shape of core/environments/*.json (validates
    against schemas/environment.schema.json)
  - region is "local" + account_id is the placeholder (no real AWS)
  - the environment override wins over the contract's environment field
  - mirrors core/onboarding.py:generate_env_file() shape (same required keys)
"""

from __future__ import annotations

import json
import sys
from pathlib import Path

import jsonschema
import pytest

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

from core.env import synthesize_local_env


REPO_ROOT = Path(__file__).resolve().parent.parent
ENV_SCHEMA_PATH = REPO_ROOT / "schemas" / "environment.schema.json"


@pytest.fixture
def env_schema():
    return json.loads(ENV_SCHEMA_PATH.read_text())


@pytest.fixture
def sample_contract(tmp_path):
    """A minimal contract YAML for the synthesizer to read."""
    contract = """
id: msvc
name: microservice
environment: dev
infrastructure:
  microservice:
    version: "1.0.0"
    inputs:
      image: nginx:latest
"""
    p = tmp_path / "contract.yml"
    p.write_text(contract)
    return p


class TestSynthesizeLocalEnv:
    def test_returns_dict_with_required_keys(self, sample_contract, env_schema):
        env = synthesize_local_env(str(sample_contract))
        assert isinstance(env, dict)
        # The schema-required keys.
        for key in (
            "name", "account_id", "region", "state_backend",
            "network", "runner_role_arn", "autonomy", "confidence_threshold",
        ):
            assert key in env, f"missing required key: {key}"

    def test_validates_against_environment_schema(self, sample_contract, env_schema):
        env = synthesize_local_env(str(sample_contract))
        jsonschema.validate(env, env_schema)  # raises on invalid

    def test_region_is_local(self, sample_contract):
        env = synthesize_local_env(str(sample_contract))
        assert env["region"] == "local", "region must be the local sentinel"

    def test_account_id_is_placeholder(self, sample_contract):
        env = synthesize_local_env(str(sample_contract))
        assert env["account_id"] == "000000000000", (
            "account_id must be the placeholder (no real AWS account)"
        )

    def test_state_backend_is_local(self, sample_contract):
        env = synthesize_local_env(str(sample_contract))
        sb = env["state_backend"]
        assert sb["bucket"] == "local-tfstate"
        assert sb["lock_table"] == "local-locks"

    def test_uses_contract_environment_by_default(self, sample_contract):
        env = synthesize_local_env(str(sample_contract))
        assert env["name"] == "dev"  # the contract's environment field

    def test_environment_override_wins(self, sample_contract):
        env = synthesize_local_env(str(sample_contract), environment="qa")
        assert env["name"] == "qa"
        # qa threshold is 0.75 (per-env default)
        assert env["confidence_threshold"] == 0.75

    def test_confidence_threshold_per_env(self, sample_contract):
        for env_name, expected in (("dev", 0.50), ("qa", 0.75), ("prod", 0.90), ("dr", 0.95)):
            env = synthesize_local_env(str(sample_contract), environment=env_name)
            assert env["confidence_threshold"] == expected, env_name

    def test_autonomy_is_full(self, sample_contract):
        env = synthesize_local_env(str(sample_contract))
        assert env["autonomy"] == "full"  # local tier is autonomous

    def test_no_real_aws_resources(self, sample_contract):
        """The synthesizer must NOT reference real AWS resources — region
        is 'local', the ARN uses the placeholder account, the bucket is local."""
        env = synthesize_local_env(str(sample_contract))
        assert "us-east-1" not in env["region"]
        assert "000000000000" in env["runner_role_arn"]
        assert "local" in env["state_backend"]["bucket"]

    def test_mirrors_onboarding_env_file_shape(self, sample_contract, env_schema):
        """The synthesized env has the same core shape as
        core/onboarding.py:generate_env_file() output — both carry the
        schema-required environment-binding keys. (generate_env_file adds
        ownerId/billingTag for the onboarding request path; the synthesizer
        is the local-tier counterpart and omits those — no consumer binding.)"""
        from core.onboarding import generate_env_file
        request = {
            "consumerRepo": "acdl/consumer-a",
            "requestedEnvironment": "dev",
            "ownerId": "team-a",
            "billingTag": "cc-a",
        }
        onboarded = generate_env_file(request)
        # The synthesizer output validates against the env schema.
        synth = synthesize_local_env(str(sample_contract))
        jsonschema.validate(synth, env_schema)
        # Both carry the schema-required environment-binding keys.
        required = {
            "name", "account_id", "region", "state_backend",
            "network", "runner_role_arn", "autonomy", "confidence_threshold",
        }
        assert required <= set(onboarded.keys()), "onboarding output missing required keys"
        assert required <= set(synth.keys()), "synthesizer output missing required keys"
        # The synthesizer omits the onboarding-request-only keys.
        assert "ownerId" not in synth
        assert "billingTag" not in synth

    def test_missing_contract_file_defaults_to_dev(self, tmp_path):
        """A non-existent contract path defaults to the dev env (no crash)."""
        env = synthesize_local_env(str(tmp_path / "nonexistent.yml"))
        assert env["name"] == "dev"
        assert env["region"] == "local"

    def test_description_mentions_contract_id(self, sample_contract):
        env = synthesize_local_env(str(sample_contract))
        assert "msvc" in env["description"], (
            "description should reference the contract id for traceability"
        )