import { describe, it, expect } from "vitest";
import { describeImport, describeImportWarnings } from "./settingsImportPreview";
import type { SettingsImportPreview } from "./types";

function preview(overrides: Partial<SettingsImportPreview> = {}): SettingsImportPreview {
  return {
    exported_at: "2026-08-27T00:00:00Z",
    app_version: "0.4.14",
    custom_env_var_count: 0,
    gateway_model_count: 0,
    has_claude_code_settings: false,
    has_claude_oauth_token: false,
    has_gateway_api_key: false,
    has_gateway_master_key: false,
    has_web_terminal_access_token: false,
    enables_web_terminal: false,
    ollama_base_url: null,
    llamacpp_base_url: null,
    openai_compatible_base_url: null,
    gateway_api_base: null,
    image_source: "registry",
    custom_image_name: null,
    ...overrides,
  };
}

describe("describeImport", () => {
  it("always names the settings replacement, even with nothing else set", () => {
    expect(describeImport(preview())).toEqual([
      "Your global settings (all of them — this replaces what's here now)",
    ]);
  });

  it("singularizes a count of exactly one", () => {
    const items = describeImport(preview({ custom_env_var_count: 1, gateway_model_count: 1 }));
    expect(items).toContain("1 global custom env var");
    expect(items).toContain("1 gateway model");
  });

  it("pluralizes counts greater than one", () => {
    const items = describeImport(preview({ custom_env_var_count: 3, gateway_model_count: 2 }));
    expect(items).toContain("3 global custom env vars");
    expect(items).toContain("2 gateway models");
  });

  it("names every present secret and setting without naming absent ones", () => {
    const items = describeImport(
      preview({
        has_claude_code_settings: true,
        has_claude_oauth_token: true,
        has_gateway_api_key: true,
        has_gateway_master_key: true,
      }),
    );
    expect(items).toContain("Global Claude Code settings");
    expect(items).toContain("Your shared Claude login");
    expect(items).toContain("The gateway provider API key");
    expect(items).toContain("The gateway master key");
    // None of the count-based items, since both counts are 0.
    expect(items.some((i) => i.includes("env var"))).toBe(false);
    expect(items.some((i) => i.includes("gateway model"))).toBe(false);
  });

  it("names the web terminal access token like any other present secret", () => {
    const items = describeImport(preview({ has_web_terminal_access_token: true }));
    expect(items).toContain("The web terminal access token");
  });

  it("names custom base URLs verbatim, since they're endpoints rather than secrets", () => {
    const items = describeImport(
      preview({
        ollama_base_url: "http://10.0.0.5:11434",
        gateway_api_base: "https://gateway.example/v1",
      }),
    );
    expect(items).toContain("Ollama server: http://10.0.0.5:11434");
    expect(items).toContain("Gateway upstream: https://gateway.example/v1");
    expect(items.some((i) => i.includes("llama.cpp"))).toBe(false);
    expect(items.some((i) => i.includes("OpenAI-compatible"))).toBe(false);
  });

  it("names a custom Docker image when set, falling back to a placeholder if unnamed", () => {
    expect(
      describeImport(preview({ image_source: "custom", custom_image_name: "ghcr.io/me/triple-c" })),
    ).toContain("Docker image: ghcr.io/me/triple-c");
    expect(describeImport(preview({ image_source: "custom", custom_image_name: null }))).toContain(
      "Docker image: (no image name set)",
    );
    expect(describeImport(preview({ image_source: "registry" })).some((i) => i.includes("Docker image"))).toBe(
      false,
    );
  });
});

describe("describeImportWarnings", () => {
  it("is empty when nothing about the import needs extra attention", () => {
    expect(describeImportWarnings(preview())).toEqual([]);
  });

  it("warns when the import enables the web terminal, regardless of the token", () => {
    // `enabled` and the token are independent — the warning is about the
    // service turning on, whether or not a token came with it.
    expect(describeImportWarnings(preview({ enables_web_terminal: true }))).toEqual([
      "Enables the remote web terminal, which listens on your network.",
    ]);
    expect(
      describeImportWarnings(
        preview({ enables_web_terminal: true, has_web_terminal_access_token: true }),
      ),
    ).toHaveLength(1);
  });

  it("warns about a dormant web terminal token even while the terminal stays off", () => {
    expect(describeImportWarnings(preview({ has_web_terminal_access_token: true }))).toEqual([
      "Includes a web terminal access token that will activate the next time the web terminal is turned on.",
    ]);
  });

  it("warns about a custom Docker image every time, not only when it changes", () => {
    expect(
      describeImportWarnings(preview({ image_source: "custom", custom_image_name: "evil:latest" })),
    ).toEqual(["Runs every project container from a custom Docker image: evil:latest."]);
    expect(describeImportWarnings(preview({ image_source: "registry" }))).toEqual([]);
  });
});