import { describe, expect, it } from "vitest";
import {
  DeploymentPreflightError,
  validateDeploymentPreflight,
  type DeploymentPreflightInput,
} from "../../src/deployment/preflight.js";

const VALID_ENV = {
  NODE_ENV: "production",
  DATABASE_URL: "postgresql://hub:secret@127.0.0.1:5432/hub",
  ANTHROPIC_BASE_URL: "https://openrouter.ai/api",
  ANTHROPIC_AUTH_TOKEN: "provider-token",
  ANTHROPIC_API_KEY: "",
  FEISHU_APP_ID: "cli_app_id",
  FEISHU_APP_SECRET: "feishu-app-secret",
  FEISHU_BOT_OPEN_ID: "ou_bot",
  CPH_BIN: "/srv/curriculum-project-hub/current/bin/cph",
  HOST: "127.0.0.1",
  PORT: "8788",
  HUB_PROJECT_WORKSPACE_ROOT: "/var/lib/cph-hub/workspaces",
  HUB_PUBLIC_BASE_URL: "https://hub.example.com",
  HUB_SESSION_SECRET: "a-production-session-secret-with-32-bytes",
} as const;

function input(overrides: Partial<DeploymentPreflightInput> = {}): DeploymentPreflightInput {
  return {
    baseDir: "/srv/curriculum-project-hub",
    hubDir: "/srv/curriculum-project-hub/current/hub",
    serviceHome: "/var/lib/cph-hub/home",
    stateDir: "/var/lib/cph-hub/state",
    cacheDir: "/var/cache/cph-hub",
    workspaceRoot: "/var/lib/cph-hub/workspaces",
    env: VALID_ENV,
    ...overrides,
  };
}

describe("validateDeploymentPreflight", () => {
  it("accepts a complete production configuration with persistent storage outside the deployment tree", () => {
    expect(validateDeploymentPreflight(input())).toEqual({
      bind: { host: "127.0.0.1", port: 8788 },
      databaseUrl: "postgresql://hub:secret@127.0.0.1:5432/hub",
      cphBin: "/srv/curriculum-project-hub/current/bin/cph",
    });
  });

  it.each([
    ["inside the live Hub", "/srv/curriculum-project-hub/current/hub/data/workspaces"],
    ["inside future releases", "/srv/curriculum-project-hub/releases/workspaces"],
    ["an ancestor of the deployment root", "/srv"],
  ])("rejects a workspace %s", (_description, workspaceRoot) => {
    expect(() =>
      validateDeploymentPreflight(
        input({
          workspaceRoot,
          env: { ...VALID_ENV, HUB_PROJECT_WORKSPACE_ROOT: workspaceRoot },
        }),
      ),
    ).toThrow("must not overlap deployment root");
  });

  it("rejects a runtime workspace that differs from the provisioned path", () => {
    expect(() =>
      validateDeploymentPreflight(
        input({ env: { ...VALID_ENV, HUB_PROJECT_WORKSPACE_ROOT: "/var/lib/cph-hub/other" } }),
      ),
    ).toThrow("HUB_PROJECT_WORKSPACE_ROOT must equal provisioned workspace root");
  });

  it("rejects a relative runtime workspace even if it resolves to the provisioned path", () => {
    expect(() =>
      validateDeploymentPreflight(
        input({ env: { ...VALID_ENV, HUB_PROJECT_WORKSPACE_ROOT: "./workspaces" } }),
      ),
    ).toThrow("HUB_PROJECT_WORKSPACE_ROOT must be an absolute normalized path");
  });

  it("reports all invalid required production values in one failed preflight", () => {
    expect.assertions(2);
    try {
      validateDeploymentPreflight(
        input({
          env: {
            ...VALID_ENV,
            ANTHROPIC_AUTH_TOKEN: "",
            FEISHU_APP_SECRET: "",
            HUB_PUBLIC_BASE_URL: "http://hub.example.com",
            HUB_SESSION_SECRET: "short",
          },
        }),
      );
    } catch (error) {
      expect(error).toBeInstanceOf(DeploymentPreflightError);
      expect((error as Error).message).toMatchInlineSnapshot(`
        "deployment preflight failed:
        - ANTHROPIC_AUTH_TOKEN is required
        - FEISHU_APP_SECRET is required
        - HUB_PUBLIC_BASE_URL must use https
        - HUB_SESSION_SECRET must contain at least 32 characters"
      `);
    }
  });

  it("rejects relative operational paths", () => {
    expect(() => validateDeploymentPreflight(input({ cacheDir: "./cache" }))).toThrow(
      "cache directory must be an absolute normalized path",
    );
  });

  it("rejects a non-empty ANTHROPIC_API_KEY that would conflict with auth-token mode", () => {
    expect(() =>
      validateDeploymentPreflight(
        input({ env: { ...VALID_ENV, ANTHROPIC_API_KEY: "conflicting-api-key" } }),
      ),
    ).toThrow("ANTHROPIC_API_KEY must be present and empty");
  });
});