import { describe, expect, test } from "bun:test";

import {
  createModel,
  deleteModel,
  disableModel,
  enableModel,
  fetchModel,
  fetchModelList,
  updateModel,
} from "../../../src/web/hooks/use-models";
import { installFetchMock, jsonResponse } from "../test-utils";

const MODEL = {
  capabilities: ["text"] as Array<"text">,
  contextLength: null,
  createdAt: "2024-01-01T00:00:00.000Z",
  enabled: true,
  id: "m1",
  maxOutputTokens: null,
  modelId: "gpt-4o",
  name: "GPT-4o",
  providerId: "pv1",
  updatedAt: "2024-01-01T00:00:00.000Z",
};

async function expectRejectsWithMessage(action: () => Promise<unknown>, message: string) {
  try {
    await action();
    throw new Error("expected rejection");
  } catch (error) {
    expect(error).toBeInstanceOf(Error);
    expect((error as Error).message).toBe(message);
  }
}

function jsonBody(body: BodyInit | null | undefined): unknown {
  return JSON.parse(typeof body === "string" ? body : "{}");
}

describe("use-models request helpers", () => {
  test("fetchModelList 按协议拼接 query 参数（含 providerId）", async () => {
    const calls = installFetchMock(() => jsonResponse({ items: [MODEL], page: 1, pageSize: 20, total: 1 }));

    const result = await fetchModelList({ keyword: "GPT", page: 1, pageSize: 20, providerId: "pv1" });

    expect(result.items).toHaveLength(1);
    expect(calls[0]?.method).toBe("GET");
    expect(calls[0]?.url).toContain("providerId=pv1");
    expect(calls[0]?.url).toContain("keyword=GPT");
  });

  test("模型 CRUD 与 enable/disable 使用正确 method、URL 与 body", async () => {
    const calls = installFetchMock((call) => {
      if (call.method === "DELETE") return new Response(null, { status: 204 });
      return jsonResponse(
        { model: MODEL },
        { status: call.method === "POST" && call.url === "/api/models" ? 201 : 200 },
      );
    });

    await createModel({
      capabilities: ["text"],
      modelId: "gpt-4o",
      name: "GPT-4o",
      providerId: "pv1",
    });
    await updateModel("m1", { name: "GPT-4o Mini" });
    await enableModel("m1");
    await disableModel("m1");
    await deleteModel("m1");
    await fetchModel("m1");

    expect(calls.map((call) => `${call.method} ${call.url}`)).toEqual([
      "POST /api/models",
      "PATCH /api/models/m1",
      "POST /api/models/m1/enable",
      "POST /api/models/m1/disable",
      "DELETE /api/models/m1",
      "GET /api/models/m1",
    ]);
    expect(jsonBody(calls[0]?.body)).toEqual({
      capabilities: ["text"],
      modelId: "gpt-4o",
      name: "GPT-4o",
      providerId: "pv1",
    });
    expect(jsonBody(calls[1]?.body)).toEqual({ name: "GPT-4o Mini" });
  });

  test("错误响应优先使用后端 error 字段", async () => {
    installFetchMock(() => jsonResponse({ error: "模型名称已存在" }, { status: 409 }));

    await expectRejectsWithMessage(
      () => createModel({ capabilities: ["text"], modelId: "gpt-4o", name: "重复", providerId: "pv1" }),
      "模型名称已存在",
    );
  });

  test("非 JSON 错误响应回退到 HTTP 状态", async () => {
    installFetchMock(() => new Response("broken", { status: 500 }));

    await expectRejectsWithMessage(() => fetchModel("m-missing"), "HTTP 500");
  });
});