import { readFileSync } from "node:fs";
import { beforeEach, describe, expect, test } from "bun:test";
import {
  EsiClient,
  EsiError,
  EsiHttpError,
  EsiMarketEstimates,
  EsiSchemaError,
  ESI_ASSET_MAX_PAGES,
  EsiRateLimitError,
  EsiStabilityError,
  ESI_ASSET_MAX_RESPONSE_BYTES,
  ESI_ASSET_MAX_ROWS_PER_PAGE,
  ESI_ASSET_SNAPSHOT_MAX_ROWS,
  ESI_CACHE_MAX_BYTES,
  ESI_ASSET_NAME_MAX_RESPONSE_BYTES,
  ESI_ASSETS_SCOPE,
  ESI_COMPATIBILITY_DATE,
  ESI_STRUCTURES_SCOPE,
  ESI_READ_OPERATIONS,
  ESI_WALLET_MAX_RESPONSE_BYTES,
  ESI_WALLET_SCOPE,
} from "../src/lib/server/esi";

const asset = (itemId = "9007199254740993", quantity = 2) => ({
  item_id: Number(itemId) > Number.MAX_SAFE_INTEGER ? itemId : Number(itemId),
  type_id: 34,
  quantity,
  location_id: 60003760,
  location_type: "station",
  location_flag: "Hangar",
  is_singleton: false,
});

function response(body: unknown, headers: Record<string, string> = {}, status = 200): Response {
  return new Response(typeof body === "string" ? body : JSON.stringify(body), { status, headers });
}

function authority(userId: string, characterId: number, scopes: readonly string[] = [ESI_ASSETS_SCOPE], grantRevision = 1, authorizationEpoch = 1, credentialVersion = 1) {
  return { userId, principal: `${userId}:principal`, characterId, scopes, grantRevision, authorizationEpoch, credentialVersion } as const;
}

function queueFetch(responses: Response[]) {
  const calls: { url: string; init: RequestInit }[] = [];
  const fetch = async (input: RequestInfo | URL, init?: RequestInit) => {
    calls.push({ url: String(input), init: init ?? {} });
    const next = responses.shift();
    if (!next) throw new Error(`unexpected request ${String(input)}`);
    return next;
  };
  return { fetch: fetch as typeof globalThis.fetch, calls };
}

describe("central ESI client", () => {
  beforeEach(() => {
    expect(ESI_COMPATIBILITY_DATE).toBe("2026-08-18");
  });

  test("sends pinned and auth headers, fetches pages, and revalidates page one", async () => {
    const second = [asset("2", 4)];
    const queued = queueFetch([
      response('[{"item_id":9007199254740993,"type_id":34,"quantity":2,"location_id":60003760,"location_type":"station","location_flag":"Hangar","is_singleton":false}]', { ETag: '"one"', "X-Pages": "2", "Cache-Control": "max-age=0" }),
      response(second, { ETag: '"two"', "X-Pages": "2", "Cache-Control": "max-age=0" }),
      new Response(null, { status: 304, headers: { ETag: '"one"', "X-Pages": "2", "Cache-Control": "max-age=60" } }),
    ]);
    const client = new EsiClient({ userAgent: "eden-test", fetch: queued.fetch, now: () => 1_000 });
    const result = await client.getAssets(42, "secret-token", authority("user-a", 42));
    expect(result.assets.map((item) => item.itemId)).toEqual(["9007199254740993", "2"]);
    expect(result.assets[0]?.characterId).toBe(42);
    expect(queued.calls).toHaveLength(3);
    expect(queued.calls[0]?.url).toBe("https://esi.evetech.net/characters/42/assets?page=1");
    const requestHeaders = new Headers(queued.calls[0]?.init.headers);
    expect(requestHeaders.get("authorization")).toBe("Bearer secret-token");
    expect(requestHeaders.get("user-agent")).toBe("eden-test");
    expect(requestHeaders.get("x-compatibility-date")).toBe("2026-08-18");
    expect(new Headers(queued.calls[2]?.init.headers).get("if-none-match")).toBe('"one"');
  });

  test("keeps auth contexts private and reuses a 304 body", async () => {
    let now = 0;
    const queued = queueFetch([
      response([asset("1")], { ETag: '"a"', "X-Pages": "1", "Cache-Control": "max-age=1" }),
      new Response(null, { status: 304, headers: { ETag: '"a"', "X-Pages": "1", "Cache-Control": "max-age=1" } }),
      new Response(null, { status: 304, headers: { ETag: '"a"', "X-Pages": "1", "Cache-Control": "max-age=1" } }),
      new Response(null, { status: 304, headers: { ETag: '"a"', "X-Pages": "1", "Cache-Control": "max-age=1" } }),
      response([asset("1")], { ETag: '"b"', "X-Pages": "1", "Cache-Control": "max-age=1" }),
      new Response(null, { status: 304, headers: { ETag: '"b"', "X-Pages": "1", "Cache-Control": "max-age=1" } }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => now });
    await client.getAssets(7, "a", authority("one", 7));
    now = 2_000;
    await client.getAssets(7, "a", authority("one", 7));
    await client.getAssets(7, "b", authority("two", 7));
    expect(queued.calls).toHaveLength(6);
    expect(new Headers(queued.calls[1]?.init.headers).get("if-none-match")).toBe('"a"');
    expect(new Headers(queued.calls[2]?.init.headers).get("if-none-match")).toBe('"a"');
    expect(new Headers(queued.calls[4]?.init.headers).get("if-none-match")).toBeNull();
    expect(JSON.stringify(queued.calls)).not.toContain("secret");
  });

  test("reads private structures through the fixed lossless endpoint and isolates its scope", async () => {
    const queued = queueFetch([response('{"structure_id":9007199254740993,"name":"Private Keep","solar_system_id":30000142,"owner_id":99000001,"type_id":35832,"position":{"x":1,"y":2,"z":3}}', { "Cache-Control": "max-age=60" })]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 1_000 });
    const result = await client.getStructure(42, "9007199254740993", "secret-token", authority("u", 42, [ESI_STRUCTURES_SCOPE]));
    expect(result.structureId).toBe("9007199254740993");
    expect(result.solarSystemId).toBe("30000142");
    expect(queued.calls[0]?.url).toBe("https://esi.evetech.net/universe/structures/9007199254740993");
    expect(new Headers(queued.calls[0]?.init.headers).get("authorization")).toBe("Bearer secret-token");
    await expect(client.getStructure(42, "9007199254740994", "secret-token", authority("u", 42, [ESI_ASSETS_SCOPE]))).rejects.toThrow("missing required scope");
    expect(ESI_READ_OPERATIONS.characterStructure.requiredScope).toBe(ESI_STRUCTURES_SCOPE);
  });

  test("retries transient responses with Retry-After but does not retry 401/403", async () => {
    const delays: number[] = [];
    const retryable = queueFetch([
      response({ error: "rate" }, { "Retry-After": "2", "X-Ratelimit-Group": "char-asset", "X-Ratelimit-Remaining": "0" }, 429),
      response([asset("1")], { "X-Pages": "1", "Cache-Control": "max-age=60", ETag: '"x"' }),
      new Response(null, { status: 304, headers: { "X-Pages": "1", ETag: '"x"', "Cache-Control": "max-age=60" } }),
    ]);
    const client = new EsiClient({
      userAgent: "test",
      fetch: retryable.fetch,
      sleep: async (milliseconds) => { delays.push(milliseconds); },
      random: () => 0,
      now: () => 0,
    });
    await client.getAssets(8, "token", authority("u", 8));
    expect(delays[0]).toBe(2_000);

    const denied = queueFetch([response({}, {}, 401)]);
    const deniedClient = new EsiClient({ userAgent: "test", fetch: denied.fetch, now: () => 0 });
    await expect(deniedClient.getAssets(8, "token", authority("u", 8))).rejects.toBeInstanceOf(EsiHttpError);
    expect(denied.calls).toHaveLength(1);
  });

  test("does not publish changing or incomplete snapshots", async () => {
    const changing = queueFetch([
      response([asset("1")], { "X-Pages": "2", ETag: '"one"' }),
      response([asset("2")], { "X-Pages": "2", ETag: '"two"' }),
      response([asset("3")], { "X-Pages": "2", ETag: '"three"' }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: changing.fetch, now: () => 0 });
    await expect(client.getAssets(1, "token", authority("u", 1))).rejects.toBeInstanceOf(EsiStabilityError);
    expect(changing.calls).toHaveLength(3);

    const invalid = queueFetch([response([{ item_id: 1 }], { "X-Pages": "1" })]);
    const invalidClient = new EsiClient({ userAgent: "test", fetch: invalid.fetch, now: () => 0 });
    await expect(invalidClient.getAssets(1, "token", authority("u", 1))).rejects.toThrow("invalid response");
  });
});

describe("typed ESI helper reads", () => {
  test("canonicalizes bounded POST IDs, preserves int64 literals, and isolates authority revisions", async () => {
    let now = 0;
    const queued = queueFetch([
      response(readFileSync("tests/fixtures/esi/asset-names-int64.json", "utf8"), { ETag: '"names"', "Cache-Control": "max-age=0" }),
      new Response(null, { status: 304, headers: { ETag: '"names"', "Cache-Control": "max-age=60" } }),
      response('[{"item_id":9007199254740993,"name":"Fresh"}]', { ETag: '"fresh"', "Cache-Control": "max-age=60" }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => now });
    const authority = { userId: "user", principal: "user:principal", characterId: 42, scopes: [ESI_ASSETS_SCOPE, "b", "a"], grantRevision: 1, authorizationEpoch: 1, credentialVersion: 1 };
    const first = await client.getAssetNames(42, ["9007199254740993", "2"], "token", authority);
    expect(first).toMatchObject({ requestedIds: ["2", "9007199254740993"], missing: ["2"], complete: false });
    expect(queued.calls[0]?.url).toBe("https://esi.evetech.net/characters/42/assets/names");
    expect(queued.calls[0]?.init.method).toBe("POST");
    expect(queued.calls[0]?.init.body).toBe("[2,9007199254740993]");
    now = 2_000;
    const reused = await client.getAssetNames(42, ["2", "9007199254740993"], "token", authority);
    expect(reused.names).toEqual([{ itemId: "9007199254740993", name: "Freighter" }]);
    expect(new Headers(queued.calls[1]?.init.headers).get("if-none-match")).toBe('"names"');
    await client.getAssetNames(42, ["2", "9007199254740993"], "token", { ...authority, grantRevision: 2 });
    expect(queued.calls).toHaveLength(3);
  });

  test("validates helper schemas, bounds, and preserves explicit missing locations", async () => {
    const locations = queueFetch([
      response(readFileSync("tests/fixtures/esi/asset-locations-finite.json", "utf8"), { "Cache-Control": "max-age=60" }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: locations.fetch, now: () => 10 });
    const result = await client.getAssetLocations(7, ["9007199254740993", "8"], "token", authority("u", 7));
    expect(result).toMatchObject({ missing: ["8"], complete: false, locations: [{ itemId: "9007199254740993", position: { x: 1, y: -2, z: 0 } }] });
    expect(locations.calls[0]?.url).toBe("https://esi.evetech.net/characters/7/assets/locations");
    expect(locations.calls[0]?.init.method).toBe("POST");

    const invalid = queueFetch([response('[{"item_id":8,"position":{"x":1e10000,"y":0,"z":0}}]')]);
    const invalidClient = new EsiClient({ userAgent: "test", fetch: invalid.fetch, now: () => 0 });
    await expect(invalidClient.getAssetLocations(7, ["8"], "token", authority("u", 7))).rejects.toBeInstanceOf(EsiSchemaError);
    await expect(invalidClient.getAssetLocations(7, [], "token", authority("u", 7))).rejects.toMatchObject({ code: "invalid_asset_ids" });
    await expect(invalidClient.getAssetLocations(7, ["1", "1"], "token", authority("u", 7))).rejects.toMatchObject({ code: "invalid_asset_ids" });
    await expect(invalidClient.getAssetLocations(7, ["9223372036854775808"], "token", authority("u", 7))).rejects.toMatchObject({ code: "invalid_asset_ids" });
  });

  test("retries safe POST reads, honors no-store and exposes wallet exact cents", async () => {
    const delays: number[] = [];
    let now = 0;
    const queued = queueFetch([
      response({}, {}, 503),
      response('[{"item_id":1,"name":"Box"}]', { ETag: '"box"', "Cache-Control": "no-store" }),
      response('[{"item_id":1,"name":"Box"}]', { ETag: '"box2"', "Cache-Control": "no-store" }),
      response(readFileSync("tests/fixtures/esi/wallet-balance-signed.json", "utf8"), { ETag: '"wallet"', "Cache-Control": "max-age=1" }),
      new Response(null, { status: 304, headers: { ETag: '"wallet"', "Cache-Control": "max-age=60" } }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => now, sleep: async (ms) => { delays.push(ms); }, random: () => 0 });
    await client.getAssetNames(7, ["1"], "token", authority("u", 7));
    await client.getAssetNames(7, ["1"], "token", authority("u", 7));
    expect(delays).toContain(250);
    expect(queued.calls[0]?.init.method).toBe("POST");
    expect(new Headers(queued.calls[2]?.init.headers).get("if-none-match")).toBeNull();
    const wallet = await client.getWalletBalance(7, "token", authority("u", 7, [ESI_WALLET_SCOPE]));
    expect(wallet.amount).toBe("-900719925474099301");
    expect(queued.calls[3]?.url).toBe("https://esi.evetech.net/characters/7/wallet");
    expect(queued.calls[3]?.init.method).toBe("GET");
    now = 500;
    await client.getWalletBalance(7, "token", authority("u", 7, [ESI_WALLET_SCOPE]));
    expect(queued.calls).toHaveLength(4);
    now = 2_000;
    const refreshed = await client.getWalletBalance(7, "token", authority("u", 7, [ESI_WALLET_SCOPE]));
    expect(refreshed.amount).toBe(wallet.amount);
    expect(new Headers(queued.calls[4]?.init.headers).get("if-none-match")).toBe('"wallet"');
  });

  test("uses the asset endpoint page cap and retains singleton source facts", async () => {
    const queued = queueFetch([response("[]", { "X-Pages": String(ESI_ASSET_MAX_PAGES + 1) })]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 0 });
    await expect(client.getAssets(7, "token", authority("u", 7))).rejects.toMatchObject({ code: "pagination_error" });
    const singletonQueue = queueFetch([
      response('[{"item_id":1,"type_id":34,"quantity":10,"location_id":60003760,"location_type":"station","location_flag":"Hangar","is_singleton":true}]', { "X-Pages": "1" }),
      new Response(null, { status: 304, headers: { "X-Pages": "1" } }),
    ]);
    const singletonClient = new EsiClient({ userAgent: "test", fetch: singletonQueue.fetch, now: () => 0 });
    const snapshot = await singletonClient.getAssets(7, "token", authority("u", 7));
    expect(snapshot.assets[0]?.isSingleton).toBe(true);
  });
});

describe("T06 transport bounds, authority, and metadata", () => {
  test("requires complete scoped authority and asserts pinned route metadata", async () => {
    const metadata = JSON.parse(readFileSync("tests/fixtures/esi/transport-metadata.json", "utf8")) as any;
    expect(metadata.compatibilityDate).toBe(ESI_COMPATIBILITY_DATE);
    expect(metadata.evidence.assetHelpers).toEqual({ source: "docs/research/eve-openapi-evidence.json", verification: "pinned-authoritative" });
    expect(metadata.evidence.walletBalance).toMatchObject({
      source: "https://esi.evetech.net/meta/openapi.json?compatibility_date=2026-08-18",
      verification: "current-retrieval-with-pinned-compatibility-date-not-historical-capture",
      retrievedAt: "2026-09-19T19:30:12Z",
      responseDate: "2026-08-18",
      openapiVersion: "2026-08-18",
      sha256: "9a9a0f4af77216300e960cfd2576c9baac085a8170022e40c928c28622d80fc6",
      operationId: "GetCharactersCharacterIdWallet",
      route: "/characters/{character_id}/wallet",
      method: "GET",
      requiredScope: ESI_WALLET_SCOPE,
      pagination: "none",
      response: { status: 200, mediaType: "application/json", shape: "scalar number/double" },
      cache: { ttlSeconds: 120, policy: "ttl-based", validators: ["Cache-Control", "ETag", "Last-Modified"] },
      rateLimit: { group: "char-wallet", tokens: 150, window: "15m" },
      officialDocs: {
        versioning: "https://developers.eveonline.com/docs/services/esi/overview/",
        caching: "https://developers.eveonline.com/docs/services/esi/overview/#caching",
        rateLimiting: "https://developers.eveonline.com/docs/services/esi/rate-limiting/",
      },
    });
    for (const [operation, expected] of Object.entries(metadata.operations) as [keyof typeof ESI_READ_OPERATIONS, any][]) {
      const descriptor = ESI_READ_OPERATIONS[operation];
      expect({ route: `/${descriptor.path}`, method: descriptor.method, requiredScope: descriptor.requiredScope }).toEqual(expected);
    }

    const client = new EsiClient({ userAgent: "test", fetch: queueFetch([response("[{\"item_id\":1,\"name\":\"x\"}]")]).fetch, now: () => 0 });
    await expect(client.getAssetNames(7, ["1"], "token", "legacy" as never)).rejects.toMatchObject({ code: "authorization_context" });
    await expect(client.getAssetNames(7, ["1"], "token", { ...authority("u", 7), grantRevision: undefined } as never)).rejects.toMatchObject({ code: "authorization_context" });
    await expect(client.getAssetNames(7, ["1"], "token", authority("u", 7, ["other.scope"]))).rejects.toMatchObject({ code: "authorization_context" });
    await expect(client.getWalletBalance(7, "token", authority("u", 7))).rejects.toMatchObject({ code: "authorization_context" });
  });

  test("isolates every private cache authority dimension and uses correct request metadata", async () => {
    const queued = queueFetch(Array.from({ length: 8 }, (_, index) => response(`[{\"item_id\":1,\"name\":\"${index}\"}]`, { "Cache-Control": "max-age=60" })));
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 0 });
    const contexts = [
      authority("u", 7),
      { ...authority("u", 7), principal: "u:other-principal" },
      { ...authority("u", 7), credentialVersion: 2 },
      authority("other", 7),
      authority("u", 8),
      authority("u", 7, [ESI_ASSETS_SCOPE, "extra"]),
      authority("u", 7, [ESI_ASSETS_SCOPE], 2, 1),
      authority("u", 7, [ESI_ASSETS_SCOPE], 1, 2),
    ];
    for (const context of contexts) await client.getAssetNames(context.characterId, ["1"], "token", context as any);
    expect(queued.calls).toHaveLength(8);
    expect(queued.calls.every((call) => call.init.method === "POST")).toBe(true);
    expect(queued.calls.every((call) => new Headers(call.init.headers).get("content-type") === "application/json")).toBe(true);
    expect(new Headers(queued.calls[0]?.init.headers).get("authorization")).toBe("Bearer token");
    expect(new Headers(queued.calls[1]?.init.headers).get("if-none-match")).toBeNull();
  });

  test("counts received rows before duplicate handling", async () => {
    const duplicatePage = JSON.stringify(Array.from({ length: 5_000 }, () => asset("1")));
    const responses = Array.from({ length: 11 }, () => response(duplicatePage, { "X-Pages": "11", "Cache-Control": "max-age=60" }));
    const queued = queueFetch(responses);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 0 });
    await expect(client.getAssets(7, "token", authority("duplicate-heavy", 7))).rejects.toMatchObject({ code: "response_too_large" });
    expect(queued.calls).toHaveLength(11);
  });

  test("shares one deadline across all asset pages and final revalidation", async () => {
    let now = 0;
    const calls: (RequestInfo | URL)[] = [];
    const client = new EsiClient({
      userAgent: "test",
      now: () => now,
      fetch: (async (input) => {
        calls.push(input);
        now = 16_000;
        return response([asset("1")], { "X-Pages": "2" });
      }) as typeof globalThis.fetch,
    });
    await expect(client.getAssets(7, "token", authority("u", 7))).rejects.toMatchObject({ code: "deadline" });
    expect(calls).toHaveLength(1);
  });

  test("rejects oversized content/streams and oversized asset pages before caching", async () => {
    const contentLengthQueue = queueFetch([response("[]", { "Content-Length": String(ESI_ASSET_NAME_MAX_RESPONSE_BYTES + 1) })]);
    const contentLengthClient = new EsiClient({ userAgent: "test", fetch: contentLengthQueue.fetch, now: () => 0 });
    await expect(contentLengthClient.getAssetNames(7, ["1"], "token", authority("u", 7))).rejects.toMatchObject({ code: "response_too_large" });

    const stream = new ReadableStream<Uint8Array>({
      start(controller) {
        controller.enqueue(new TextEncoder().encode("x".repeat(ESI_WALLET_MAX_RESPONSE_BYTES + 1)));
        controller.close();
      },
    });
    const streamQueue = queueFetch([new Response(stream)]);
    const streamClient = new EsiClient({ userAgent: "test", fetch: streamQueue.fetch, now: () => 0 });
    await expect(streamClient.getWalletBalance(7, "token", authority("u", 7, [ESI_WALLET_SCOPE]))).rejects.toMatchObject({ code: "response_too_large" });

    const oversizedPage = JSON.stringify(Array.from({ length: ESI_ASSET_MAX_ROWS_PER_PAGE + 1 }, () => ({})));
    const pageQueue = queueFetch([response(oversizedPage, { "X-Pages": "1" })]);
    const pageClient = new EsiClient({ userAgent: "test", fetch: pageQueue.fetch, now: () => 0 });
    await expect(pageClient.getAssets(7, "token", authority("u", 7))).rejects.toMatchObject({ code: "response_too_large" });
    expect(pageClient.getCacheStats().cacheEntries).toBe(0);
  });

  test("rejects malformed helper arrays, duplicate/unexpected IDs, malformed wallet, and negative zero", async () => {
    const queued = queueFetch([
      response("[{\"item_id\":1,\"name\":\"a\"},{\"item_id\":1,\"name\":\"b\"}]"),
      response("[{\"item_id\":2,\"name\":\"a\"}]"),
      response("{}"),
      response("not-a-number"),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 0 });
    await expect(client.getAssetNames(7, ["1"], "token", authority("u", 7))).rejects.toBeInstanceOf(EsiSchemaError);
    await expect(client.getAssetNames(7, ["1"], "token", authority("u", 7))).rejects.toBeInstanceOf(EsiSchemaError);
    await expect(client.getAssetLocations(7, ["1"], "token", authority("u", 7))).rejects.toBeInstanceOf(EsiSchemaError);
    await expect(client.getWalletBalance(7, "token", authority("u", 7, [ESI_WALLET_SCOPE]))).rejects.toBeInstanceOf(EsiSchemaError);
    await expect(client.getAssetNames(7, ["-0"], "token", authority("u", 7))).rejects.toMatchObject({ code: "invalid_asset_ids" });
  });

  test("records cooldowns on successful responses, exposes typed queries, and bounds maps", async () => {
    let now = 0;
    const cooldownAuth = authority("u", 7, [ESI_WALLET_SCOPE]);
    const cooldownQueue = queueFetch([
      response("1", { "Cache-Control": "max-age=0", "X-Ratelimit-Remaining": "0", "X-Ratelimit-Group": "wallet", "Retry-After": "10" }),
      response("1", { "Cache-Control": "max-age=60" }),
    ]);
    const sleeps: number[] = [];
    const client = new EsiClient({ userAgent: "test", fetch: cooldownQueue.fetch, now: () => now, sleep: async (ms) => { sleeps.push(ms); } });
    await client.getWalletBalance(7, "token", cooldownAuth);
    expect(client.getCooldown(cooldownAuth, 7)).toMatchObject({ delayMs: 10_000, group: "wallet", kind: "new" });
    now = 1_000;
    await client.getWalletBalance(7, "token", cooldownAuth);
    expect(sleeps).toContain(9_000);

    const thrownQueue = queueFetch([response("rate", { "Retry-After": "20", "X-Ratelimit-Remaining": "0" }, 429)]);
    const thrown = new EsiClient({ userAgent: "test", fetch: thrownQueue.fetch, now: () => 0, sleep: async () => {} });
    await expect(thrown.getWalletBalance(7, "token", cooldownAuth)).rejects.toMatchObject({ code: "rate_limited", cooldown: { delayMs: 20_000 } });

    const boundedQueue = queueFetch(Array.from({ length: 520 }, (_, index) => response(`[{\"item_id\":${index + 1},\"name\":\"x\"}]`, { "Cache-Control": "max-age=60" })));
    const bounded = new EsiClient({ userAgent: "test", fetch: boundedQueue.fetch, now: () => 0 });
    for (let index = 0; index < 520; index += 1) await bounded.getAssetNames(7, [String(index + 1)], "token", authority("u", 7));
    expect(bounded.getCacheStats().cacheEntries).toBeLessThanOrEqual(512);
    expect(bounded.getCacheStats(7 * 60 * 60 * 1000).cacheEntries).toBe(0);

    const weightedBody = JSON.stringify(Array.from({ length: 1_000 }, (_, index) => ({ item_id: index + 1, name: "x".repeat(512) })));
    const weightedIds = Array.from({ length: 1_000 }, (_, index) => String(index + 1));
    const weightedQueue = queueFetch(Array.from({ length: 80 }, () => response(weightedBody, { "Cache-Control": "max-age=60" })));
    const weighted = new EsiClient({ userAgent: "test", fetch: weightedQueue.fetch, now: () => 0 });
    for (let index = 0; index < 80; index += 1) await weighted.getAssetNames(7, weightedIds, "token", authority(`weighted-${index}`, 7));
    const weightedStats = weighted.getCacheStats();
    expect(weightedStats.cacheBytes).toBeLessThanOrEqual(ESI_CACHE_MAX_BYTES);
    expect(weightedStats.cacheEntries).toBeLessThan(80);

    const snapshotRows = Array.from({ length: 1_000 }, (_, index) => asset(String(index + 1)));
    const snapshotBody = JSON.stringify(snapshotRows);
    const snapshotResponses: Response[] = [];
    for (let index = 0; index < 51; index += 1) {
      snapshotResponses.push(response(snapshotBody, { "X-Pages": "1", "Cache-Control": "max-age=60" }));
      snapshotResponses.push(new Response(null, { status: 304, headers: { "X-Pages": "1", "Cache-Control": "max-age=60" } }));
    }
    const snapshots = new EsiClient({ userAgent: "test", fetch: queueFetch(snapshotResponses).fetch, now: () => 0 });
    for (let index = 0; index < 51; index += 1) await snapshots.getAssets(7, "token", authority(`snapshot-${index}`, 7));
    const snapshotStats = snapshots.getCacheStats();
    expect(snapshotStats.assetSnapshotRows).toBeLessThanOrEqual(ESI_ASSET_SNAPSHOT_MAX_ROWS);
    expect(snapshotStats.assetSnapshots).toBeLessThan(51);
  });
});

describe("ESI market estimates", () => {
  test("keeps the inherited non-negative market-price policy", async () => {
    const queued = queueFetch([
      response([{ type_id: 34, average_price: -1 }], { ETag: '"negative"', "Cache-Control": "max-age=60" }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 1234 });
    await expect(new EsiMarketEstimates(client).estimates([34])).rejects.toMatchObject({ code: "invalid_price" });
  });

  test("uses average prices only and returns cents with retrieval provenance", async () => {
    const queued = queueFetch([
      response([
        { type_id: 34, average_price: 12.345, adjusted_price: 999999 },
        { type_id: 35, adjusted_price: 100 },
      ], { ETag: '"prices"', "Cache-Control": "max-age=60" }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 1234 });
    const snapshot = await new EsiMarketEstimates(client).estimates([34, 35]);
    expect(snapshot.prices).toEqual([{ typeId: 34, unitPrice: "1235" }]);
    expect(snapshot.source).toContain("2026-08-18");
    expect(snapshot.asOf).toBe(1234);
    expect(queued.calls[0]?.url).toBe("https://esi.evetech.net/markets/prices");
  });
});

describe("ESI cache and limiter edge cases", () => {
  test("uses Date, Age, and Expires for freshness", async () => {
    let now = 1_000_000;
    const date = new Date(now - 10_000).toUTCString();
    const expires = new Date(now + 50_000).toUTCString();
    const queued = queueFetch([
      response([{ type_id: 34, average_price: 1 }], { Date: date, Age: "2", Expires: expires, ETag: '"p"' }),
      new Response(null, { status: 304, headers: { Date: new Date(now + 60_000).toUTCString(), ETag: '"p"' } }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => now, sleep: async () => {} });
    await new EsiMarketEstimates(client).estimates([34]);
    now += 40_000;
    await new EsiMarketEstimates(client).estimates([34]);
    expect(queued.calls).toHaveLength(1);
    now += 20_000;
    await new EsiMarketEstimates(client).estimates([34]);
    expect(queued.calls).toHaveLength(2);
  });

  test("persists new and legacy limiter cooldowns across calls", async () => {
    let now = 100;
    const delays: number[] = [];
    const newer = queueFetch([
      response([{ type_id: 34, average_price: 1 }], { "Cache-Control": "max-age=0", "X-Ratelimit-Group": "meta", "X-Ratelimit-Remaining": "0", "Retry-After": "2" }),
      response([{ type_id: 34, average_price: 1 }], { "Cache-Control": "max-age=60" }),
    ]);
    const newClient = new EsiClient({ userAgent: "test", fetch: newer.fetch, now: () => now, sleep: async (ms) => { delays.push(ms); } });
    await new EsiMarketEstimates(newClient).estimates([34]);
    now = 200;
    await new EsiMarketEstimates(newClient).estimates([34]);
    expect(delays).toContain(1_900);

    now = 100;
    const legacyDelays: number[] = [];
    const legacy = queueFetch([
      response([{ type_id: 34, average_price: 1 }], { "Cache-Control": "max-age=0", "X-ESI-Error-Limit-Remain": "0", "X-ESI-Error-Limit-Reset": "3" }),
      response([{ type_id: 34, average_price: 1 }], { "Cache-Control": "max-age=60" }),
    ]);
    const legacyClient = new EsiClient({ userAgent: "test", fetch: legacy.fetch, now: () => now, sleep: async (ms) => { legacyDelays.push(ms); } });
    await new EsiMarketEstimates(legacyClient).estimates([34]);
    now = 200;
    await new EsiMarketEstimates(legacyClient).estimates([34]);
    expect(legacyDelays).toContain(2_900);
  });

  test("does not retry an unbounded server delay beyond the request budget", async () => {
    const queued = queueFetch([response({}, { "Retry-After": "60" }, 429)]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 0, sleep: async () => {} });
    await expect(new EsiMarketEstimates(client).estimates([34])).rejects.toBeInstanceOf(EsiRateLimitError);
    expect(queued.calls).toHaveLength(1);
  });

  test("does not retain no-store bodies or validators", async () => {
    const body = [asset("1")];
    const queued = queueFetch([
      response(body, { "Cache-Control": "no-store", ETag: '"nope"', "X-Pages": "1" }),
      response(body, { "Cache-Control": "no-store", ETag: '"nope"', "X-Pages": "1" }),
      response(body, { "Cache-Control": "no-store", ETag: '"nope2"', "X-Pages": "1" }),
      response(body, { "Cache-Control": "no-store", ETag: '"nope2"', "X-Pages": "1" }),
    ]);
    const client = new EsiClient({ userAgent: "test", fetch: queued.fetch, now: () => 0 });
    await client.getAssets(10, "token", authority("u", 10));
    await client.getAssets(10, "token", authority("u", 10));
    expect(queued.calls).toHaveLength(4);
    expect(new Headers(queued.calls[2]?.init.headers).get("if-none-match")).toBeNull();
  });

  test("cancels discarded retry and error response bodies", async () => {
    let retryCanceled = 0;
    const retryResponse = {
      status: 503,
      headers: new Headers(),
      body: { cancel: async () => { retryCanceled += 1; } },
    } as unknown as Response;
    const retryQueue = queueFetch([
      retryResponse,
      response([{ type_id: 34, average_price: 1 }]),
    ]);
    const retryClient = new EsiClient({ userAgent: "test", fetch: retryQueue.fetch, now: () => 0, sleep: async () => {} });
    await new EsiMarketEstimates(retryClient).estimates([34]);
    expect(retryCanceled).toBe(1);

    let errorCanceled = 0;
    const errorResponse = {
      status: 401,
      headers: new Headers(),
      body: { cancel: async () => { errorCanceled += 1; } },
    } as unknown as Response;
    const errorQueue = queueFetch([errorResponse]);
    const errorClient = new EsiClient({ userAgent: "test", fetch: errorQueue.fetch, now: () => 0 });
    await expect(new EsiMarketEstimates(errorClient).estimates([34])).rejects.toBeInstanceOf(EsiHttpError);
    expect(errorCanceled).toBe(1);
  });
});