#!/usr/bin/env python3
"""Tests for every hcp-run-guard refusal, exit-0, discard, and reconcile case."""

from __future__ import annotations

import importlib.util
from pathlib import Path
from typing import Any

SCRIPT = Path(__file__).with_name("hcp-run-guard.py")
WORKSPACE = "shoc-frontend-new-dev"
PATTERNS = [
    "terraform/live/dev/**",
    "terraform/live/modules/**",
]


def load_module():
    spec = importlib.util.spec_from_file_location("hcp_run_guard", SCRIPT)
    module = importlib.util.module_from_spec(spec)
    assert spec.loader is not None
    spec.loader.exec_module(module)
    return module


def workspace_payload(
    *,
    auto_apply: bool = False,
    speculative: bool = True,
    tags_regex: str | None = None,
    trigger_patterns: list[str] | None = None,
    locked: bool = False,
    current_run: dict[str, Any] | None = None,
) -> dict[str, Any]:
    return {
        "data": {
            "attributes": {
                "auto-apply": auto_apply,
                "speculative-enabled": speculative,
                "vcs-repo": {"tags-regex": tags_regex},
                "trigger-patterns": PATTERNS if trigger_patterns is None else trigger_patterns,
                "locked": locked,
            },
            "relationships": {
                "current-run": {"data": current_run},
            },
        }
    }


def run_payload(*, status: str, plan_only: bool = False) -> dict[str, Any]:
    return {"data": {"attributes": {"status": status, "plan-only": plan_only}}}


def check(module, payloads: dict[str, Any], posts: list | None = None):
    calls: list[str] = []

    def get(url: str) -> dict[str, Any]:
        calls.append(url)
        if url not in payloads:
            raise AssertionError(f"unexpected GET {url}")
        return payloads[url]

    recorded: list[tuple[str, dict[str, Any]]] = []

    def post(url: str, payload: dict[str, Any]) -> int:
        recorded.append((url, payload))
        if posts:
            return posts.pop(0)
        return 202

    try:
        code = module.check_and_discard(
            workspace=WORKSPACE,
            token="test-token",
            get=get,
            post=post,
        )
        return code, None, calls, recorded
    except module.GuardError as exc:
        return 1, str(exc), calls, recorded


def reconcile(module, outcome: str, payloads: dict[str, Any], run_id: str = "run-1"):
    def get(url: str) -> dict[str, Any]:
        if url not in payloads:
            raise AssertionError(f"unexpected GET {url}")
        return payloads[url]

    try:
        code = module.reconcile_apply(
            run_id=run_id,
            apply_outcome=outcome,
            token="test-token",
            get=get,
        )
        return code, None
    except module.GuardError as exc:
        return 1, str(exc)


def main() -> int:
    module = load_module()
    ws = f"https://app.terraform.io/api/v2/organizations/seahaven/workspaces/{WORKSPACE}"
    run_url = "https://app.terraform.io/api/v2/runs/run-1"
    discard_url = f"{run_url}/actions/discard"
    failures: list[str] = []

    def expect_refuse(name: str, payloads: dict[str, Any], fragment: str) -> None:
        code, error, _, recorded = check(module, payloads)
        if code != 1 or not error or fragment not in error:
            failures.append(f"{name}: expected refuse containing {fragment!r}, got {code} {error}")
        if recorded:
            failures.append(f"{name}: discard was posted on a refusal")

    expect_refuse(
        "auto-apply",
        {ws: workspace_payload(auto_apply=True)},
        "auto-apply is on",
    )
    expect_refuse(
        "speculative-off",
        {ws: workspace_payload(speculative=False)},
        "speculative plans are off",
    )
    expect_refuse(
        "tags-regex",
        {ws: workspace_payload(tags_regex="^v")},
        "tag-based VCS triggering",
    )
    expect_refuse(
        "wrong-patterns",
        {ws: workspace_payload(trigger_patterns=["terraform/**"])},
        "trigger-patterns must be",
    )
    expect_refuse(
        "locked-without-run",
        {ws: workspace_payload(locked=True, current_run=None)},
        "locked without a current run",
    )
    expect_refuse(
        "applying",
        {
            ws: workspace_payload(locked=True, current_run={"id": "run-1"}),
            run_url: run_payload(status="applying"),
        },
        "wait, do not discard an apply",
    )
    expect_refuse(
        "not-discardable",
        {
            ws: workspace_payload(locked=True, current_run={"id": "run-1"}),
            run_url: run_payload(status="errored"),
        },
        "is not discardable",
    )

    code, error, _, recorded = check(module, {ws: workspace_payload(locked=False)})
    if code != 0 or error is not None or recorded:
        failures.append(f"unlocked: expected exit 0, got {code} {error} {recorded}")

    code, error, _, recorded = check(
        module,
        {
            ws: workspace_payload(locked=True, current_run={"id": "run-1"}),
            run_url: run_payload(status="planned", plan_only=True),
        },
    )
    if code != 0 or recorded:
        failures.append(f"plan-only: expected exit 0 without discard, got {code} {recorded}")

    code, error, _, recorded = check(
        module,
        {
            ws: workspace_payload(locked=True, current_run={"id": "run-1"}),
            run_url: run_payload(status="planned"),
        },
    )
    if code != 0 or error is not None:
        failures.append(f"discard: expected exit 0, got {code} {error}")
    if not recorded or recorded[0][0] != discard_url:
        failures.append(f"discard: posted {recorded}")

    code, error, _, recorded = check(
        module,
        {
            ws: workspace_payload(locked=True, current_run={"id": "run-1"}),
            run_url: run_payload(status="policy_checked"),
        },
        posts=[409],
    )
    if code != 0:
        failures.append(f"discard-409: expected exit 0, got {code} {error}")

    try:
        module.check_and_discard(workspace=WORKSPACE, token="", get=lambda _url: {})
        failures.append("missing-token: accepted empty token")
    except module.GuardError:
        pass

    code, error = reconcile(module, "success", {})
    if code != 0:
        failures.append(f"reconcile-success: expected 0, got {code} {error}")

    code, error = reconcile(
        module,
        "failure",
        {run_url: run_payload(status="applied")},
    )
    if code != 0:
        failures.append(f"reconcile-applied: expected 0, got {code} {error}")

    code, error = reconcile(
        module,
        "failure",
        {run_url: run_payload(status="errored")},
    )
    if code != 1 or not error or "errored" not in error:
        failures.append(f"reconcile-errored: expected refuse, got {code} {error}")

    try:
        module.reconcile_apply(run_id="", apply_outcome="failure", token="test-token")
        failures.append("reconcile-missing-run: accepted empty run id")
    except module.GuardError:
        pass

    try:
        module.reconcile_apply(run_id="run-1", apply_outcome="failure", token="")
        failures.append("reconcile-missing-token: accepted empty token")
    except module.GuardError:
        pass

    if failures:
        print("FAIL: hcp-run-guard cases failed", file=__import__("sys").stderr)
        for item in failures:
            print(f"  - {item}", file=__import__("sys").stderr)
        return 1
    print("PASS: HCP run guard checks")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())