import { expect, test, vi } from "vitest";
import { chmodSync, mkdtempSync, realpathSync, rmSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { stringify } from "yaml";
import { buildApp } from "../src/app.js";
import { loadConfig } from "../src/config.js";

test("configured OIDC advertises login but fails closed without its runtime client secret", async () => {
  const directory = mkdtempSync(join(realpathSync(tmpdir()), "thothii-app-oidc-mode-"));
  chmodSync(directory, 0o700);
  const file = join(directory, "auth.yaml");
  writeFileSync(file, stringify({
    version: 1, mode: "oidc", publicUrl: "https://thothii.example.org",
    oidc: {
      issuer: "https://authentik.example.org/application/o/thothii/", clientId: "thothii",
      clientSecretRef: "THT_OIDC_CLIENT_SECRET", scopes: ["openid"], groupsClaim: "groups",
    },
    groupCatalog: { driver: "authentik", baseUrl: "https://authentik.example.org", apiTokenRef: "THT_AUTHENTIK_API_TOKEN" },
    authorization: { groupRoles: { "TOT Users": ["user"], "TOT Admin": ["admin"] } },
  }), { encoding: "utf8", mode: 0o600 });
  chmodSync(file, 0o600);
  try {
    const app = buildApp(loadConfig({ THT_AUTH_CONFIG_FILE: file, THT_AUTH_STATE_ROOT: join(directory, "auth-state") }));
    try {
      expect((await app.inject({ method: "GET", url: "/auth/config" })).json())
        .toEqual({ mode: "oidc", localLogin: false, oidcLogin: true });
      const placeholder = await app.inject({ method: "GET", url: "/auth/oidc/login" });
      expect(placeholder.statusCode).toBe(503);
      expect(placeholder.json()).toEqual({ code: "auth_unavailable", error: "Authentication is unavailable" });
    } finally {
      await app.close();
    }
  } finally {
    rmSync(directory, { recursive: true, force: true });
  }
});

test("configured OIDC initializes login from the literal secret bundle without an environment duplicate", async () => {
  const directory = mkdtempSync(join(realpathSync(tmpdir()), "thothii-app-oidc-bundle-"));
  chmodSync(directory, 0o700);
  const file = join(directory, "auth.yaml");
  const bundle = join(directory, "thothii.secrets");
  const clientSecret = "bundle-only-oidc-client-secret";
  writeFileSync(file, stringify({
    version: 1, mode: "oidc", publicUrl: "https://thothii.example.org",
    oidc: {
      issuer: "https://authentik.example.org/application/o/thothii/", clientId: "thothii",
      clientSecretRef: "THT_OIDC_CLIENT_SECRET", scopes: ["openid"], groupsClaim: "groups",
    },
    groupCatalog: { driver: "authentik", baseUrl: "https://authentik.example.org", apiTokenRef: "THT_AUTHENTIK_API_TOKEN" },
    authorization: { groupRoles: { "TOT Users": ["user"], "TOT Admin": ["admin"] } },
  }), { encoding: "utf8", mode: 0o600 });
  writeFileSync(bundle, `THT_OIDC_CLIENT_SECRET=${clientSecret}\nTHT_AUTHENTIK_API_TOKEN=bundle-only-authentik-token\n`, {
    encoding: "utf8", mode: 0o600,
  });
  chmodSync(file, 0o600);
  chmodSync(bundle, 0o600);
  const original = process.env.THT_OIDC_CLIENT_SECRET;
  delete process.env.THT_OIDC_CLIENT_SECRET;
  const oidcProtocolFactory = vi.fn((input: { clientSecret: string }) => ({
    authorizationUrl: async ({ state }: { state: string }) => new URL(`https://authentik.example.org/authorize?state=${state}`),
    callback: async () => { throw new Error("callback is outside this login-start regression"); },
    diagnose: async () => undefined,
  }));
  const authSessionStore = {
    createOidcState: async () => ({
      state: "s".repeat(43),
      record: { version: 1 },
    }),
  };
  try {
    const app = buildApp(loadConfig({
      NODE_ENV: "test", THT_AUTH_CONFIG_FILE: file, THT_AUTH_STATE_ROOT: join(directory, "auth-state"),
      THT_SECRETS_FILE: bundle,
    }), { oidcProtocolFactory, authSessionStore } as never);
    try {
      const response = await app.inject({ method: "GET", url: "/auth/oidc/login" });
      expect(response.statusCode).toBe(302);
      expect(oidcProtocolFactory).toHaveBeenCalledWith(expect.objectContaining({ clientSecret }));
      expect(process.env.THT_OIDC_CLIENT_SECRET).toBeUndefined();
    } finally {
      await app.close();
    }
  } finally {
    if (original === undefined) delete process.env.THT_OIDC_CLIENT_SECRET;
    else process.env.THT_OIDC_CLIENT_SECRET = original;
    rmSync(directory, { recursive: true, force: true });
  }
});