import { describe, expect, it } from "vitest";

import { buildInlineProviderModels } from "./model.js";

const makeModel = (id: string) => ({
  id,
  name: id,
  reasoning: false,
  input: ["text"] as const,
  cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
  contextWindow: 1,
  maxTokens: 1,
});

describe("buildInlineProviderModels", () => {
  it("attaches provider ids to inline models", () => {
    const providers = {
      " alpha ": { models: [makeModel("alpha-model")] },
      beta: { models: [makeModel("beta-model")] },
    };

    const result = buildInlineProviderModels(providers);

    expect(result).toEqual([
      { ...makeModel("alpha-model"), provider: "alpha", baseUrl: undefined, api: undefined },
      { ...makeModel("beta-model"), provider: "beta", baseUrl: undefined, api: undefined },
    ]);
  });

  it("inherits baseUrl from provider when model does not specify it", () => {
    const providers = {
      custom: {
        baseUrl: "http://localhost:8000",
        models: [makeModel("custom-model")],
      },
    };

    const result = buildInlineProviderModels(providers);

    expect(result).toHaveLength(1);
    expect(result[0].baseUrl).toBe("http://localhost:8000");
  });

  it("inherits api from provider when model does not specify it", () => {
    const providers = {
      custom: {
        api: "anthropic-messages",
        models: [makeModel("custom-model")],
      },
    };

    const result = buildInlineProviderModels(providers);

    expect(result).toHaveLength(1);
    expect(result[0].api).toBe("anthropic-messages");
  });

  it("model-level api takes precedence over provider-level api", () => {
    const providers = {
      custom: {
        api: "openai-chat",
        models: [{ ...makeModel("custom-model"), api: "anthropic-messages" as const }],
      },
    };

    const result = buildInlineProviderModels(providers);

    expect(result).toHaveLength(1);
    expect(result[0].api).toBe("anthropic-messages");
  });

  it("inherits both baseUrl and api from provider config", () => {
    const providers = {
      custom: {
        baseUrl: "http://localhost:10000",
        api: "anthropic-messages",
        models: [makeModel("claude-opus-4.5")],
      },
    };

    const result = buildInlineProviderModels(providers);

    expect(result).toHaveLength(1);
    expect(result[0]).toMatchObject({
      provider: "custom",
      baseUrl: "http://localhost:10000",
      api: "anthropic-messages",
      name: "claude-opus-4.5",
    });
  });
});