import { afterEach, expect, test } from "bun:test";
import { spawnSync } from "node:child_process";
import { mkdtempSync, mkdirSync, rmSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join, resolve } from "node:path";

const roots: string[] = [];
const script = resolve(import.meta.dir, "runtime-gitops-verify.mjs");

afterEach(() => {
  while (roots.length > 0) rmSync(roots.pop()!, { recursive: true, force: true });
});

test("accepts the complete transactional projection capability env", () => {
  const fixture = createFixture();
  const result = runVerify(fixture.root);
  expect(result.status).toBe(0);
  expect(result.stderr).toContain('"code-agent-runtime-kafka-event-bridge-enabled"');
});

test("fails closed when a required workload capability env is missing", () => {
  const fixture = createFixture({ omitWebEnv: "HWLAB_WORKBENCH_PROJECTION_REALTIME_ENABLED" });
  const result = runVerify(fixture.root);
  expect(result.status).toBe(48);
  expect(result.stderr).toContain('"reason":"code-agent-runtime-capability-env-invalid"');
  expect(result.stderr).toContain('"name":"HWLAB_WORKBENCH_PROJECTION_REALTIME_ENABLED"');
});

test("fails closed when a required workload was not matched", () => {
  const fixture = createFixture({ omitWebWorkload: true });
  const result = runVerify(fixture.root);
  expect(result.status).toBe(48);
  expect(result.stderr).toContain('"reason":"code-agent-runtime-workload-missing"');
  expect(result.stderr).toContain('"hwlab-cloud-web"');
});

test("fails closed when the transactional projection authority is incomplete", () => {
  const fixture = createFixture({ featureOverrides: { projectionOutboxRelay: false } });
  const result = runVerify(fixture.root);
  expect(result.status).toBe(48);
  expect(result.stderr).toContain('"reason":"kafka-event-bridge-authority-invalid"');
  expect(result.stderr).toContain('"projectionOutboxRelay"');
});

function createFixture(options: { omitWebEnv?: string; omitWebWorkload?: boolean; featureOverrides?: Record<string, boolean> } = {}) {
  const root = mkdtempSync(join(tmpdir(), "runtime-gitops-verify-"));
  roots.push(root);
  const runtimeDir = join(root, "runtime");
  mkdirSync(runtimeDir);
  writeFileSync(join(root, "overlay.json"), JSON.stringify(overlay(options.featureOverrides)));
  writeFileSync(join(runtimeDir, "cloud-api.yaml"), deploymentYaml("hwlab-cloud-api", cloudApiEnv()));
  if (!options.omitWebWorkload) {
    writeFileSync(join(runtimeDir, "cloud-web.yaml"), deploymentYaml("hwlab-cloud-web", cloudWebEnv().filter(([name]) => name !== options.omitWebEnv)));
  }
  return { root };
}

function runVerify(root: string) {
  return spawnSync(process.execPath, [script], {
    cwd: root,
    env: { ...process.env, UNIDESK_RUNTIME_GITOPS_OVERLAY_FILE: join(root, "overlay.json") },
    encoding: "utf8",
  });
}

function overlay(featureOverrides: Record<string, boolean> = {}) {
  return {
    runtimePath: "runtime",
    codeAgentRuntime: {
      enabled: true,
      kafkaEventBridge: {
        enabled: true,
        features: {
          directPublish: false,
          liveKafkaSse: false,
          kafkaRefreshReplay: false,
          transactionalProjector: true,
          projectionOutboxRelay: true,
          projectionRealtime: true,
          ...featureOverrides,
        },
      },
    },
  };
}

function cloudApiEnv(): Array<[string, string]> {
  return [
    ["HWLAB_KAFKA_ENABLED", "true"],
    ["HWLAB_KAFKA_AGENTRUN_EVENT_CONSUME_ENABLED", "true"],
    ["HWLAB_KAFKA_DIRECT_PUBLISH_ENABLED", "false"],
    ["HWLAB_WORKBENCH_LIVE_KAFKA_SSE_ENABLED", "false"],
    ["HWLAB_WORKBENCH_KAFKA_REFRESH_REPLAY_ENABLED", "false"],
    ["HWLAB_KAFKA_TRANSACTIONAL_PROJECTOR_ENABLED", "true"],
    ["HWLAB_KAFKA_PROJECTION_OUTBOX_RELAY_ENABLED", "true"],
    ["HWLAB_WORKBENCH_PROJECTION_REALTIME_ENABLED", "true"],
  ];
}

function cloudWebEnv(): Array<[string, string]> {
  return [
    ["HWLAB_WORKBENCH_LIVE_KAFKA_SSE_ENABLED", "false"],
    ["HWLAB_WORKBENCH_KAFKA_REFRESH_REPLAY_ENABLED", "false"],
    ["HWLAB_WORKBENCH_PROJECTION_REALTIME_ENABLED", "true"],
  ];
}

function deploymentYaml(name: string, env: Array<[string, string]>) {
  const envYaml = env.map(([envName, value]) => `            - name: ${envName}\n              value: "${value}"`).join("\n");
  return `apiVersion: apps/v1\nkind: Deployment\nmetadata:\n  name: ${name}\n  labels:\n    app.kubernetes.io/name: ${name}\nspec:\n  template:\n    spec:\n      containers:\n        - name: ${name}\n          env:\n${envYaml}\n`;
}