import assert from "node:assert/strict";
import test from "node:test";

import {
  anthropicBaseIncludesV1,
  isBareOriginBaseURL,
  normalizeAnthropicSdkBaseURL,
  stripTrailingSlashes,
} from "./anthropicCompatBaseUrl";

test("stripTrailingSlashes trims and drops trailing slashes", () => {
  assert.equal(stripTrailingSlashes("  https://host/v1/  "), "https://host/v1");
  assert.equal(stripTrailingSlashes(""), "");
});

test("anthropicBaseIncludesV1 detects AI SDK style bases", () => {
  assert.equal(anthropicBaseIncludesV1("https://api.anthropic.com/v1"), true);
  assert.equal(anthropicBaseIncludesV1("https://api.anthropic.com/v1/"), true);
  assert.equal(anthropicBaseIncludesV1("https://gateway.example/api/v1"), true);
  assert.equal(anthropicBaseIncludesV1("https://api.anthropic.com"), false);
  assert.equal(anthropicBaseIncludesV1("https://gateway.example/"), false);
});

test("isBareOriginBaseURL only matches scheme+host with no path", () => {
  assert.equal(isBareOriginBaseURL("https://api.anthropic.com"), true);
  assert.equal(isBareOriginBaseURL("https://gateway.example/"), true);
  assert.equal(isBareOriginBaseURL("http://localhost:8080"), true);
  assert.equal(isBareOriginBaseURL("https://gateway.example/v1"), false);
  assert.equal(isBareOriginBaseURL("https://proxy.example/anthropic"), false);
  assert.equal(isBareOriginBaseURL("https://gateway.example/api"), false);
  assert.equal(isBareOriginBaseURL(""), false);
});

test("normalizeAnthropicSdkBaseURL accepts Claude Code and AI SDK conventions", () => {
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://api.anthropic.com"),
    "https://api.anthropic.com/v1",
  );
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://gateway.example/"),
    "https://gateway.example/v1",
  );
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://gateway.example/v1"),
    "https://gateway.example/v1",
  );
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://gateway.example/v1/"),
    "https://gateway.example/v1",
  );
  assert.equal(normalizeAnthropicSdkBaseURL("   "), "");
});

test("normalizeAnthropicSdkBaseURL preserves custom non-/v1 path prefixes", () => {
  // Proxy that already completes the SDK base: …/anthropic/messages, not …/anthropic/v1/messages.
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://proxy.example/anthropic"),
    "https://proxy.example/anthropic",
  );
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://proxy.example/anthropic/"),
    "https://proxy.example/anthropic",
  );
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://gateway.example/api"),
    "https://gateway.example/api",
  );
  // Nested AI SDK style still ends in /v1 and stays as-is.
  assert.equal(
    normalizeAnthropicSdkBaseURL("https://gateway.example/api/v1"),
    "https://gateway.example/api/v1",
  );
});