import { describe, expect, it } from "vitest";
import { normalizeRegisteredProvider } from "./provider-validation.js";
import type { PluginDiagnostic, ProviderPlugin } from "./types.js";

function collectDiagnostics() {
  const diagnostics: PluginDiagnostic[] = [];
  return {
    diagnostics,
    pushDiagnostic: (diag: PluginDiagnostic) => {
      diagnostics.push(diag);
    },
  };
}

function makeProvider(overrides: Partial<ProviderPlugin>): ProviderPlugin {
  return {
    id: "demo",
    label: "Demo",
    auth: [],
    ...overrides,
  };
}

describe("normalizeRegisteredProvider", () => {
  it("drops invalid and duplicate auth methods, and clears bad wizard method bindings", () => {
    const { diagnostics, pushDiagnostic } = collectDiagnostics();

    const provider = normalizeRegisteredProvider({
      pluginId: "demo-plugin",
      source: "/tmp/demo/index.ts",
      provider: makeProvider({
        id: " demo ",
        label: " Demo Provider ",
        aliases: [" alias-one ", "alias-one", ""],
        envVars: [" DEMO_API_KEY ", "DEMO_API_KEY"],
        auth: [
          {
            id: " primary ",
            label: " Primary ",
            kind: "custom",
            run: async () => ({ profiles: [] }),
          },
          {
            id: "primary",
            label: "Duplicate",
            kind: "custom",
            run: async () => ({ profiles: [] }),
          },
          { id: "   ", label: "Missing", kind: "custom", run: async () => ({ profiles: [] }) },
        ],
        wizard: {
          setup: {
            choiceId: " demo-choice ",
            methodId: " missing ",
          },
          modelPicker: {
            label: " Demo models ",
            methodId: " missing ",
          },
        },
      }),
      pushDiagnostic,
    });

    expect(provider).toMatchObject({
      id: "demo",
      label: "Demo Provider",
      aliases: ["alias-one"],
      envVars: ["DEMO_API_KEY"],
      auth: [{ id: "primary", label: "Primary" }],
      wizard: {
        setup: {
          choiceId: "demo-choice",
        },
        modelPicker: {
          label: "Demo models",
        },
      },
    });
    expect(diagnostics.map((diag) => ({ level: diag.level, message: diag.message }))).toEqual([
      {
        level: "error",
        message: 'provider "demo" auth method duplicated id "primary"',
      },
      {
        level: "error",
        message: 'provider "demo" auth method missing id',
      },
      {
        level: "warn",
        message:
          'provider "demo" setup method "missing" not found; falling back to available methods',
      },
      {
        level: "warn",
        message:
          'provider "demo" model-picker method "missing" not found; falling back to available methods',
      },
    ]);
  });

  it("drops wizard metadata when a provider has no auth methods", () => {
    const { diagnostics, pushDiagnostic } = collectDiagnostics();

    const provider = normalizeRegisteredProvider({
      pluginId: "demo-plugin",
      source: "/tmp/demo/index.ts",
      provider: makeProvider({
        wizard: {
          setup: {
            choiceId: "demo",
          },
          modelPicker: {
            label: "Demo",
          },
        },
      }),
      pushDiagnostic,
    });

    expect(provider?.wizard).toBeUndefined();
    expect(diagnostics.map((diag) => diag.message)).toEqual([
      'provider "demo" setup metadata ignored because it has no auth methods',
      'provider "demo" model-picker metadata ignored because it has no auth methods',
    ]);
  });

  it("prefers catalog when a provider registers both catalog and discovery", () => {
    const { diagnostics, pushDiagnostic } = collectDiagnostics();

    const provider = normalizeRegisteredProvider({
      pluginId: "demo-plugin",
      source: "/tmp/demo/index.ts",
      provider: makeProvider({
        catalog: {
          run: async () => null,
        },
        discovery: {
          run: async () => ({
            provider: {
              baseUrl: "http://127.0.0.1:8000/v1",
              models: [],
            },
          }),
        },
      }),
      pushDiagnostic,
    });

    expect(provider?.catalog).toBeDefined();
    expect(provider?.discovery).toBeUndefined();
    expect(diagnostics.map((diag) => diag.message)).toEqual([
      'provider "demo" registered both catalog and discovery; using catalog',
    ]);
  });
});