import type { DB } from "@umt/db";
import { migrateEngineSchema } from "@umt/tasks";
import type { Kysely } from "kysely";
import { vi } from "vitest";
import { ConfigSchema } from "../../src/config.ts";
import { createOutboxPort } from "../../src/context.ts";
import { createApp } from "../../src/http/app.ts";
import { EventBus } from "../../src/http/sse.ts";
import { createCapabilityRegistry } from "../../src/modules/agent/capability-registry.ts";
import { createAuthSettingsModule } from "../../src/modules/auth-settings/index.ts";
import { createSecretStore, createSettingsReader } from "../../src/modules/auth-settings/provided.ts";
import type { ServerContext, ServerModule } from "../../src/modules/types.ts";
import { DEV_KEY, memoryLogger } from "../helpers.ts";

// 真实 PG 的 W2-A 测试夹具:独立业务 schema + 独立引擎 schema;任务引擎用假对象(只测 cancel 透传)。

import { createTestSchema, PG_URL, uniqueSchema, withSchemaLock } from "../support/pg.ts";

export { PG_URL, pgAvailable, withSchemaLock } from "../support/pg.ts";
export const MASTER_KEY = "test-master-key-0123456789";

export async function createHarness(opts: { engine?: boolean; extraModules?: ServerModule[] } = {}) {
  const ts = await createTestSchema(uniqueSchema("w2a_test"), { max: 5 });
  const { schema } = ts;
  const db: Kysely<DB> = ts.db;
  const engineSchema = `${schema}_ow`;
  if (opts.engine) await withSchemaLock(() => migrateEngineSchema(PG_URL, engineSchema));
  const { logger, lines } = memoryLogger();
  const bus = new EventBus(100);
  const config = ConfigSchema.parse({
    DATABASE_URL: PG_URL,
    SECRET_MASTER_KEY: MASTER_KEY,
    NODE_ENV: "development",
    DEV_ADMIN_KEY: DEV_KEY,
  });
  const cancel = vi.fn(async (_runId: string, _reason?: string) => true);
  const ctx = {
    role: "all",
    db,
    config,
    logger,
    events: bus,
    engine: { cancel } as unknown as ServerContext["engine"],
    outbox: createOutboxPort(),
    secrets: createSecretStore({ db, masterKey: MASTER_KEY }),
    settings: createSettingsReader({ db, logger, events: bus }),
    capabilities: createCapabilityRegistry({ logger }),
  } as ServerContext;
  const mod = createAuthSettingsModule({ setupTokenOnStart: false, engineSchema });
  const app = createApp({
    config,
    logger,
    bus,
    db,
    role: "all",
    version: "0.0.0-test",
    modules: [mod, ...(opts.extraModules ?? [])],
    ctx,
  });
  return {
    db,
    app,
    ctx,
    bus,
    lines,
    cancel,
    schema,
    engineSchema,
    async close() {
      await ts.drop(engineSchema);
    },
  };
}
export type Harness = Awaited<ReturnType<typeof createHarness>>;

/** 极简 cookie jar:记住 Set-Cookie,请求时带上;写方法自动带 CSRF 头 */
export class Browser {
  cookies = new Map<string, string>();
  constructor(
    private readonly app: Harness["app"],
    readonly ip = "203.0.113.10",
  ) {}

  absorb(res: Response) {
    for (const sc of res.headers.getSetCookie()) {
      const [pair] = sc.split(";");
      const i = pair!.indexOf("=");
      const k = pair!.slice(0, i).trim();
      const v = pair!.slice(i + 1).trim();
      if (!v || /max-age=0/i.test(sc)) this.cookies.delete(k);
      else this.cookies.set(k, decodeURIComponent(v));
    }
  }

  async req(
    method: string,
    path: string,
    body?: unknown,
    opts: { csrf?: boolean; headers?: Record<string, string> } = {},
  ) {
    const headers: Record<string, string> = { "x-real-ip": this.ip, ...opts.headers };
    if (this.cookies.size)
      headers.cookie = [...this.cookies].map(([k, v]) => `${k}=${encodeURIComponent(v)}`).join("; ");
    if (body !== undefined) headers["content-type"] = "application/json";
    const csrf = this.cookies.get("umt_csrf");
    if (method !== "GET" && opts.csrf !== false && csrf) headers["x-csrf-token"] = csrf;
    const res = await this.app.request(`/api/v1${path}`, {
      method,
      headers,
      ...(body !== undefined ? { body: JSON.stringify(body) } : {}),
    });
    this.absorb(res);
    return res;
  }
}

/** Bearer 调用 */
export function bearer(app: Harness["app"], key: string) {
  return (method: string, path: string, body?: unknown) =>
    app.request(`/api/v1${path}`, {
      method,
      headers: {
        authorization: `Bearer ${key}`,
        ...(body !== undefined ? { "content-type": "application/json" } : {}),
      },
      ...(body !== undefined ? { body: JSON.stringify(body) } : {}),
    });
}