/**
 * Regression tests for the Telegram outbound attachments domain
 * Covers outbound attachment queueing and delivery behavior in one domain-level suite
 */

import assert from "node:assert/strict";
import { mkdtemp, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import test from "node:test";

import {
  createTelegramQueuedOutboundAttachmentSender,
  deliverTelegramGuestCachedAttachment,
  getTelegramOutboundAttachmentByteLimitFromEnv,
  queueTelegramOutboundAttachments,
  registerTelegramOutboundAttachmentTool,
  registerTelegramOutboundMessageTool,
  sendQueuedTelegramOutboundAttachments,
  sendTelegramOutboundFiles,
  sendTelegramOutboundMessage,
  TELEGRAM_OUTBOUND_ATTACHMENT_DEFAULT_MAX_BYTES,
  type TelegramOutboundAttachmentQueueTargetView,
  type TelegramQueuedOutboundAttachmentTurnView,
} from "../lib/outbound-attachments.ts";
import type { ExtensionAPI } from "../lib/pi.ts";
import { createTelegramThreadTarget } from "../lib/target.ts";

function createAttachmentQueueTarget(
  queuedAttachments: TelegramOutboundAttachmentQueueTargetView["queuedAttachments"] = [],
): TelegramOutboundAttachmentQueueTargetView {
  return { queuedAttachments };
}

function createAttachmentTurn(
  queuedAttachments = [{ path: "/tmp/a.png", fileName: "a.png" }],
): TelegramQueuedOutboundAttachmentTurnView {
  return { chatId: 1, replyToMessageId: 2, queuedAttachments };
}

type RegisteredAttachmentTool = {
  name?: string;
  execute: (
    toolCallId: string,
    params: {
      paths: string[];
      chat_id?: number;
      thread_id?: number;
      caption?: string;
    },
  ) => Promise<{ details: { paths: string[]; chatId?: number } }>;
};

type RegisteredAnyTool = {
  name?: string;
  execute: (
    toolCallId: string,
    params: Record<string, unknown>,
  ) => Promise<unknown>;
};

test("Outbound attachment byte-limit helpers own the outbound file default", () => {
  assert.equal(
    TELEGRAM_OUTBOUND_ATTACHMENT_DEFAULT_MAX_BYTES,
    50 * 1024 * 1024,
  );
  assert.equal(
    getTelegramOutboundAttachmentByteLimitFromEnv(
      { PI_TELEGRAM_OUTBOUND_ATTACHMENT_MAX_BYTES: "12345" },
      ["PI_TELEGRAM_OUTBOUND_ATTACHMENT_MAX_BYTES"],
      99,
    ),
    12345,
  );
  assert.equal(
    getTelegramOutboundAttachmentByteLimitFromEnv(
      {
        PI_TELEGRAM_OUTBOUND_ATTACHMENT_MAX_BYTES: "0",
        TELEGRAM_MAX_ATTACHMENT_SIZE_BYTES: "bad",
      },
      [
        "PI_TELEGRAM_OUTBOUND_ATTACHMENT_MAX_BYTES",
        "TELEGRAM_MAX_ATTACHMENT_SIZE_BYTES",
      ],
      99,
    ),
    99,
  );
});

test("Outbound attachment tool registration delegates queueing", async () => {
  let tool: RegisteredAttachmentTool | undefined;
  const api = {
    registerTool: (definition: RegisteredAttachmentTool) => {
      tool = definition;
    },
  } as unknown as ExtensionAPI;
  const activeTurn = createAttachmentQueueTarget();
  registerTelegramOutboundAttachmentTool(api, {
    maxAttachmentsPerTurn: 2,
    getActiveTurn: () => activeTurn,
    statPath: async () => ({ isFile: () => true }),
  });
  assert.equal(tool?.name, "telegram_attach");
  assert.ok(tool);
  const result = await tool.execute("tool-call", { paths: ["/tmp/report.md"] });
  assert.deepEqual(activeTurn.queuedAttachments, [
    { path: "/tmp/report.md", fileName: "report.md" },
  ]);
  assert.deepEqual(result.details.paths, ["/tmp/report.md"]);
});

test("Outbound attachment tool sends immediately when no Telegram turn is active", async () => {
  let tool: RegisteredAttachmentTool | undefined;
  const sent: string[] = [];
  const api = {
    registerTool: (definition: RegisteredAttachmentTool) => {
      tool = definition;
    },
  } as unknown as ExtensionAPI;
  registerTelegramOutboundAttachmentTool(api, {
    maxAttachmentsPerTurn: 2,
    getActiveTurn: () => undefined,
    getDefaultChatId: () => 77,
    canSendDirect: () => true,
    sendMultipart: async (method, fields, fileField, _filePath, fileName) => {
      sent.push(
        `${method}:${fields.chat_id}:${fields.message_thread_id ?? "none"}:${fields.caption}:${fileField}:${fileName}`,
      );
    },
    statPath: async () => ({ isFile: () => true, size: 1 }),
  });
  const result = await tool?.execute("tool-call", {
    paths: ["/tmp/report.md"],
    caption: "done",
  });
  assert.deepEqual(sent, ["sendDocument:77:none:done:document:report.md"]);
  assert.deepEqual(result?.details, { paths: ["/tmp/report.md"], chatId: 77 });
});

test("Outbound attachment tool sends to assigned thread target by default", async () => {
  let tool: RegisteredAttachmentTool | undefined;
  const sent: Array<{ chatId?: string; threadId?: string }> = [];
  const api = {
    registerTool: (definition: RegisteredAttachmentTool) => {
      tool = definition;
    },
  } as unknown as ExtensionAPI;
  registerTelegramOutboundAttachmentTool(api, {
    maxAttachmentsPerTurn: 2,
    getActiveTurn: () => undefined,
    getDefaultChatId: () => 7,
    getDefaultTarget: () => createTelegramThreadTarget(-1007, 42),
    canSendDirect: () => true,
    sendMultipart: async (_method, fields) => {
      sent.push({ chatId: fields.chat_id, threadId: fields.message_thread_id });
    },
    statPath: async () => ({ isFile: () => true, size: 1 }),
  });
  await tool?.execute("tool-call", { paths: ["/tmp/report.md"] });
  assert.deepEqual(sent, [{ chatId: "-1007", threadId: "42" }]);
});

test("Outbound attachment tool sends explicit thread target immediately", async () => {
  let tool: RegisteredAttachmentTool | undefined;
  const sent: string[] = [];
  const api = {
    registerTool: (definition: RegisteredAttachmentTool) => {
      tool = definition;
    },
  } as unknown as ExtensionAPI;
  registerTelegramOutboundAttachmentTool(api, {
    maxAttachmentsPerTurn: 2,
    getActiveTurn: () => undefined,
    canSendDirect: () => true,
    sendMultipart: async (_method, fields) => {
      sent.push(`${fields.chat_id}:${fields.message_thread_id}`);
    },
    statPath: async () => ({ isFile: () => true, size: 1 }),
  });
  await tool?.execute("tool-call", {
    paths: ["/tmp/report.md"],
    chat_id: -1007,
    thread_id: 42,
  });
  assert.deepEqual(sent, ["-1007:42"]);
});

test("Outbound message tool sends direct Telegram markdown with parsed buttons", async () => {
  const tools = new Map<string, RegisteredAnyTool>();
  const sent: Array<{
    chatId: number;
    markdown: string;
    replyMarkup?: unknown;
    target?: unknown;
  }> = [];
  const api = {
    registerTool: (definition: RegisteredAnyTool) => {
      if (definition.name) tools.set(definition.name, definition);
    },
  } as unknown as ExtensionAPI;
  registerTelegramOutboundMessageTool(api, {
    getDefaultChatId: () => 7,
    canSendDirect: () => true,
    planMessage: (markdown) => ({
      markdown: markdown
        .replace(/<!-- telegram_button: Continue -->/, "")
        .trim(),
      replyMarkup: {
        inline_keyboard: [[{ text: "Continue", callback_data: "button:1" }]],
      },
    }),
    sendMarkdownMessage: async (chatId, markdown, options) => {
      sent.push({
        chatId,
        markdown,
        replyMarkup: options?.replyMarkup,
        target: options?.target,
      });
      return 9;
    },
  });
  await tools.get("telegram_message")?.execute("tool-call", {
    text: "**hello**\n\n<!-- telegram_button: Continue -->",
  });
  assert.deepEqual(sent, [
    {
      chatId: 7,
      markdown: "**hello**",
      replyMarkup: {
        inline_keyboard: [[{ text: "Continue", callback_data: "button:1" }]],
      },
      target: undefined,
    },
  ]);
});

test("Outbound message tool sends explicit thread target", async () => {
  const tools = new Map<string, RegisteredAnyTool>();
  const sent: Array<{ chatId: number; target?: unknown }> = [];
  const api = {
    registerTool: (definition: RegisteredAnyTool) => {
      if (definition.name) tools.set(definition.name, definition);
    },
  } as unknown as ExtensionAPI;
  registerTelegramOutboundMessageTool(api, {
    getDefaultChatId: () => 7,
    canSendDirect: () => true,
    planMessage: (markdown) => ({ markdown }),
    sendMarkdownMessage: async (chatId, _markdown, options) => {
      sent.push({ chatId, target: options?.target });
      return 9;
    },
  });
  await tools.get("telegram_message")?.execute("tool-call", {
    text: "hello",
    chat_id: -1007,
    thread_id: 42,
  });
  assert.deepEqual(sent, [
    { chatId: -1007, target: { chatId: -1007, threadId: 42 } },
  ]);
});

test("Direct outbound message carries internal thread target", async () => {
  const target = createTelegramThreadTarget(-1007, 42);
  const sent: Array<{ chatId: number; target?: unknown }> = [];
  await sendTelegramOutboundMessage({
    text: "hello",
    chatId: -1007,
    target,
    canSendDirect: () => true,
    planMessage: (markdown) => ({ markdown }),
    sendMarkdownMessage: async (chatId, _markdown, options) => {
      sent.push({ chatId, target: options?.target });
      return 1;
    },
  });
  assert.deepEqual(sent, [{ chatId: -1007, target }]);
});

test("Direct outbound message defaults to assigned thread target", async () => {
  const target = createTelegramThreadTarget(-1007, 42);
  const sent: Array<{ chatId: number; target?: unknown }> = [];
  await sendTelegramOutboundMessage({
    text: "hello",
    getDefaultChatId: () => 7,
    getDefaultTarget: () => target,
    canSendDirect: () => true,
    planMessage: (markdown) => ({ markdown }),
    sendMarkdownMessage: async (chatId, _markdown, options) => {
      sent.push({ chatId, target: options?.target });
      return 1;
    },
  });
  assert.deepEqual(sent, [{ chatId: -1007, target }]);
});

test("Direct outbound files carry internal thread target", async () => {
  const sentFields: Array<Record<string, string>> = [];
  await sendTelegramOutboundFiles({
    paths: ["/tmp/report.md"],
    chatId: -1007,
    target: createTelegramThreadTarget(-1007, 42),
    maxAttachmentsPerTurn: 1,
    canSendDirect: () => true,
    statPath: async () => ({ isFile: () => true, size: 1 }),
    sendMultipart: async (_method, fields) => {
      sentFields.push(fields);
    },
  });
  assert.equal(sentFields[0]?.message_thread_id, "42");
});

test("Direct outbound files accept explicit tool thread target", async () => {
  const sentFields: Array<Record<string, string>> = [];
  await sendTelegramOutboundFiles({
    paths: ["/tmp/report.md"],
    chatId: -1007,
    threadId: 42,
    maxAttachmentsPerTurn: 1,
    canSendDirect: () => true,
    statPath: async () => ({ isFile: () => true, size: 1 }),
    sendMultipart: async (_method, fields) => {
      sentFields.push(fields);
    },
  });
  assert.equal(sentFields[0]?.message_thread_id, "42");
});

test("Direct Telegram tools require local polling lock ownership", async () => {
  await assert.rejects(
    () =>
      queueTelegramOutboundAttachments({
        activeTurn: undefined,
        paths: ["/tmp/report.md"],
        maxAttachmentsPerTurn: 2,
        sendMultipart: async () => undefined,
        getDefaultChatId: () => 77,
        canSendDirect: () => false,
        statPath: async () => ({ isFile: () => true, size: 1 }),
      }),
    {
      message:
        /requires this Pi instance to own \/telegram-connect or be registered/,
    },
  );
  await assert.rejects(() => toolsMessageWithoutOwnership(), {
    message:
      /requires this Pi instance to own \/telegram-connect or be registered/,
  });
});

async function toolsMessageWithoutOwnership(): Promise<unknown> {
  let tool: RegisteredAnyTool | undefined;
  const api = {
    registerTool: (definition: RegisteredAnyTool) => {
      tool = definition;
    },
  } as unknown as ExtensionAPI;
  registerTelegramOutboundMessageTool(api, {
    getDefaultChatId: () => 7,
    canSendDirect: () => false,
    planMessage: (markdown) => ({ markdown }),
    sendMarkdownMessage: async () => 9,
  });
  return tool?.execute("tool-call", { text: "hello" });
}

test("Outbound attachment queueing adds files to the active Telegram turn", async () => {
  const activeTurn = createAttachmentQueueTarget();
  const result = await queueTelegramOutboundAttachments({
    activeTurn,
    paths: ["/tmp/demo.txt"],
    maxAttachmentsPerTurn: 2,
    statPath: async () => ({ isFile: () => true }),
  });
  assert.deepEqual(activeTurn.queuedAttachments, [
    { path: "/tmp/demo.txt", fileName: "demo.txt" },
  ]);
  assert.deepEqual(result.details.paths, ["/tmp/demo.txt"]);
  assert.equal(result.content[0]?.text, "\nQueued 1 Telegram attachment(s).");
});

test("Outbound attachment queueing admits exactly one Guest Mode file", async () => {
  const activeTurn = {
    ...createAttachmentQueueTarget(),
    guestQueryId: "guest-query",
  };
  await queueTelegramOutboundAttachments({
    activeTurn,
    paths: ["/tmp/demo.txt"],
    maxAttachmentsPerTurn: 2,
    statPath: async () => ({ isFile: () => true }),
  });
  assert.deepEqual(activeTurn.queuedAttachments, [
    { path: "/tmp/demo.txt", fileName: "demo.txt" },
  ]);

  let statCalled = false;
  await assert.rejects(
    () =>
      queueTelegramOutboundAttachments({
        activeTurn,
        paths: ["/tmp/second.txt"],
        maxAttachmentsPerTurn: 2,
        statPath: async () => {
          statCalled = true;
          return { isFile: () => true };
        },
      }),
    {
      message:
        "Telegram Guest Mode supports one attachment per reply; no attachment was queued",
    },
  );
  assert.equal(statCalled, false);
  assert.equal(activeTurn.queuedAttachments.length, 1);
});

test("Guest attachment staging builds cached media results and always deletes staging messages", async () => {
  const cases = [
    {
      path: "/tmp/report.txt",
      response: { message_id: 11, document: { file_id: "doc-id" } },
      expectedMethod: "sendDocument",
      expectedResult: {
        type: "document",
        id: "attachment-1",
        title: "report.txt",
        document_file_id: "doc-id",
        caption: "caption",
      },
    },
    {
      path: "/tmp/photo.jpg",
      response: {
        message_id: 12,
        photo: [
          { file_id: "small", file_size: 10 },
          { file_id: "large", file_size: 20 },
        ],
      },
      expectedMethod: "sendPhoto",
      expectedResult: {
        type: "photo",
        id: "attachment-1",
        photo_file_id: "large",
        caption: "caption",
      },
    },
    {
      path: "/tmp/audio.mp3",
      response: { message_id: 13, audio: { file_id: "audio-id" } },
      expectedMethod: "sendAudio",
      expectedResult: {
        type: "audio",
        id: "attachment-1",
        audio_file_id: "audio-id",
        caption: "caption",
      },
    },
    {
      path: "/tmp/voice.ogg",
      response: { message_id: 14, voice: { file_id: "voice-id" } },
      expectedMethod: "sendVoice",
      expectedResult: {
        type: "voice",
        id: "attachment-1",
        voice_file_id: "voice-id",
        title: "voice.ogg",
        caption: "caption",
      },
    },
  ] as const;

  for (const item of cases) {
    const events: unknown[] = [];
    await deliverTelegramGuestCachedAttachment({
      guestQueryId: "guest-1",
      stagingChatId: 42,
      attachment: { path: item.path, fileName: item.path.split("/").at(-1)! },
      caption: "caption",
      sendMultipart: async (method, fields, fileField) => {
        events.push(["upload", method, fields, fileField]);
        return item.response;
      },
      answerGuestQuery: async (guestQueryId, result) => {
        events.push(["answer", guestQueryId, result]);
      },
      deleteMessage: async (chatId, messageId) => {
        events.push(["delete", chatId, messageId]);
      },
    });
    assert.deepEqual(events, [
      [
        "upload",
        item.expectedMethod,
        { chat_id: "42" },
        item.expectedMethod.replace("send", "").toLowerCase(),
      ],
      ["answer", "guest-1", item.expectedResult],
      ["delete", 42, item.response.message_id],
    ]);
  }
});

test("Guest attachment staging cleans up extraction and answer failures", async () => {
  for (const phase of ["extract", "answer"] as const) {
    const events: string[] = [];
    await assert.rejects(
      () =>
        deliverTelegramGuestCachedAttachment({
          guestQueryId: "guest-1",
          stagingChatId: 42,
          attachment: { path: "/tmp/report.txt", fileName: "report.txt" },
          sendMultipart: async () => ({
            message_id: 20,
            ...(phase === "answer" ? { document: { file_id: "doc-id" } } : {}),
          }),
          answerGuestQuery: async () => {
            events.push("answer");
            throw new Error("answer failed");
          },
          deleteMessage: async () => {
            events.push("delete");
          },
        }),
      phase === "extract" ? /no document file_id/ : /answer failed/,
    );
    assert.deepEqual(events, phase === "extract" ? ["delete"] : ["answer", "delete"]);
  }
});

test("Guest attachment staging falls back to one text answer before media answer", async () => {
  const events: string[] = [];
  await deliverTelegramGuestCachedAttachment({
    guestQueryId: "guest-1",
    stagingChatId: 42,
    attachment: { path: "/tmp/report.txt", fileName: "report.txt" },
    fallbackText: "fallback",
    sendMultipart: async () => ({ message_id: 20 }),
    answerGuestQuery: async () => {
      events.push("unexpected:media");
    },
    answerGuestText: async (guestQueryId, text) => {
      events.push(`text:${guestQueryId}:${text}`);
    },
    deleteMessage: async () => {
      events.push("delete");
    },
  });
  assert.deepEqual(events, ["text:guest-1:fallback", "delete"]);
});

test("Guest attachment staging records cleanup failure without retrying the answer", async () => {
  const events: string[] = [];
  await deliverTelegramGuestCachedAttachment({
    guestQueryId: "guest-1",
    stagingChatId: 42,
    attachment: { path: "/tmp/report.txt", fileName: "report.txt" },
    sendMultipart: async () => ({
      message_id: 20,
      document: { file_id: "doc-id" },
    }),
    answerGuestQuery: async () => {
      events.push("answer");
    },
    deleteMessage: async () => {
      events.push("delete");
      throw new Error("cleanup failed");
    },
    recordRuntimeEvent: (category, error, details) => {
      events.push(`${category}:${(error as Error).message}:${details?.phase}`);
    },
  });
  assert.deepEqual(events, [
    "answer",
    "delete",
    "attachment:cleanup failed:guest-staging-cleanup",
  ]);
});

test("Outbound attachment queueing uses the domain stat fallback", async () => {
  const tempDir = await mkdtemp(
    join(tmpdir(), "pi-telegram-attachment-queue-"),
  );
  const filePath = join(tempDir, "demo.txt");
  await writeFile(filePath, "demo", "utf8");
  const activeTurn = createAttachmentQueueTarget();
  const result = await queueTelegramOutboundAttachments({
    activeTurn,
    paths: [filePath],
    maxAttachmentsPerTurn: 1,
  });
  assert.deepEqual(result.details.paths, [filePath]);
});

test("Outbound attachment queueing rejects oversized files", async () => {
  await assert.rejects(
    () =>
      queueTelegramOutboundAttachments({
        activeTurn: createAttachmentQueueTarget(),
        paths: ["/tmp/large.bin"],
        maxAttachmentsPerTurn: 1,
        maxAttachmentSizeBytes: 10,
        statPath: async () => ({ isFile: () => true, size: 11 }),
      }),
    {
      message:
        "Attachment exceeds size limit (11 bytes > 10 bytes): /tmp/large.bin",
    },
  );
});

test("Outbound attachment queueing stays atomic when a later file is rejected", async () => {
  const activeTurn = createAttachmentQueueTarget();
  await assert.rejects(
    () =>
      queueTelegramOutboundAttachments({
        activeTurn,
        paths: ["/tmp/ok.txt", "/tmp/large.bin"],
        maxAttachmentsPerTurn: 2,
        maxAttachmentSizeBytes: 10,
        statPath: async (path) => ({
          isFile: () => true,
          size: path.endsWith("large.bin") ? 11 : 1,
        }),
      }),
    {
      message:
        "Attachment exceeds size limit (11 bytes > 10 bytes): /tmp/large.bin",
    },
  );
  assert.deepEqual(activeTurn.queuedAttachments, []);
});

test("Outbound attachment queueing rejects missing turns, non-files, and full queues", async () => {
  await assert.rejects(
    () =>
      queueTelegramOutboundAttachments({
        activeTurn: undefined,
        paths: ["/tmp/demo.txt"],
        maxAttachmentsPerTurn: 1,
        statPath: async () => ({ isFile: () => true }),
      }),
    { message: /active Telegram turn/ },
  );
  await assert.rejects(
    () =>
      queueTelegramOutboundAttachments({
        activeTurn: createAttachmentQueueTarget(),
        paths: ["/tmp/demo.txt"],
        maxAttachmentsPerTurn: 1,
        statPath: async () => ({ isFile: () => false }),
      }),
    { message: "Not a file: /tmp/demo.txt" },
  );
  await assert.rejects(
    () =>
      queueTelegramOutboundAttachments({
        activeTurn: createAttachmentQueueTarget([
          { path: "/tmp/a.txt", fileName: "a.txt" },
        ]),
        paths: ["/tmp/demo.txt"],
        maxAttachmentsPerTurn: 1,
        statPath: async () => ({ isFile: () => true }),
      }),
    { message: "Attachment limit reached (1)" },
  );
});

test("Outbound attachment delivery includes reply parameters for uploads", async () => {
  const sentFields: Array<Record<string, string>> = [];
  await sendQueuedTelegramOutboundAttachments(createAttachmentTurn(), {
    sendMultipart: async (_method, fields) => {
      sentFields.push(fields);
    },
    sendTextReply: async () => undefined,
  });
  assert.deepEqual(sentFields, [
    {
      chat_id: "1",
      reply_parameters: JSON.stringify({
        message_id: 2,
        allow_sending_without_reply: true,
      }),
    },
  ]);
});

test("Outbound attachment delivery includes thread target for uploads", async () => {
  const sentFields: Array<Record<string, string>> = [];
  await sendQueuedTelegramOutboundAttachments(
    {
      ...createAttachmentTurn(),
      target: createTelegramThreadTarget(1, 42),
    },
    {
      sendMultipart: async (_method, fields) => {
        sentFields.push(fields);
      },
      sendTextReply: async () => undefined,
    },
  );
  assert.equal(sentFields[0]?.message_thread_id, "42");
});

test("Outbound attachment delivery chooses photo vs document methods from file paths", async () => {
  const sent: Array<string> = [];
  await sendQueuedTelegramOutboundAttachments(
    createAttachmentTurn([
      { path: "/tmp/a.png", fileName: "a.png" },
      { path: "/tmp/b.txt", fileName: "b.txt" },
    ]),
    {
      sendMultipart: async (
        method,
        _fields,
        fileField,
        _filePath,
        fileName,
      ) => {
        sent.push(`${method}:${fileField}:${fileName}`);
      },
      sendTextReply: async () => undefined,
    },
  );
  assert.deepEqual(sent, [
    "sendPhoto:photo:a.png",
    "sendDocument:document:b.txt",
  ]);
});

test("Outbound attachment delivery uses the domain stat fallback for size checks", async () => {
  const tempDir = await mkdtemp(join(tmpdir(), "pi-telegram-attachment-"));
  const filePath = join(tempDir, "large.txt");
  await writeFile(filePath, "too large", "utf8");
  const replies: string[] = [];
  await sendQueuedTelegramOutboundAttachments(
    createAttachmentTurn([{ path: filePath, fileName: "large.txt" }]),
    {
      sendMultipart: async () => {
        throw new Error("unexpected upload");
      },
      sendTextReply: async (_chatId, _replyToMessageId, text) => {
        replies.push(text);
      },
      maxAttachmentSizeBytes: 4,
    },
  );
  assert.deepEqual(replies, [
    "Failed to send attachment large.txt: Attachment exceeds size limit (9 bytes > 4 bytes)",
  ]);
});

test("Outbound attachment delivery checks attachment sizes before upload", async () => {
  const replies: string[] = [];
  const sent: string[] = [];
  await sendQueuedTelegramOutboundAttachments(createAttachmentTurn(), {
    maxAttachmentSizeBytes: 10,
    statPath: async () => ({ size: 11 }),
    sendMultipart: async () => {
      sent.push("sent");
    },
    sendTextReply: async (_chatId, _replyToMessageId, text) => {
      replies.push(text);
      return undefined;
    },
  });
  assert.deepEqual(sent, []);
  assert.deepEqual(replies, [
    "Failed to send attachment a.png: Attachment exceeds size limit (11 bytes > 10 bytes)",
  ]);
});

test("Outbound attachment delivery reports per-file failures via text replies", async () => {
  const replies: Array<{ text: string; target?: unknown }> = [];
  const runtimeEvents: string[] = [];
  const target = createTelegramThreadTarget(1, 42);
  await sendQueuedTelegramOutboundAttachments(
    { ...createAttachmentTurn(), target },
    {
      sendMultipart: async () => {
        throw new Error("upload failed");
      },
      sendTextReply: async (_chatId, _replyToMessageId, text, options) => {
        replies.push({ text, target: options?.target });
        return undefined;
      },
      recordRuntimeEvent: (category, error, details) => {
        const message = error instanceof Error ? error.message : String(error);
        runtimeEvents.push(`${category}:${message}:${details?.fileName}`);
      },
    },
  );
  assert.deepEqual(replies, [
    { text: "Failed to send attachment a.png: upload failed", target },
  ]);
  assert.deepEqual(runtimeEvents, ["attachment:upload failed:a.png"]);
});

test("Outbound attachment sender runtime binds delivery ports", async () => {
  const sent: string[] = [];
  const sendQueuedAttachments = createTelegramQueuedOutboundAttachmentSender({
    sendMultipart: async (method, _fields, fileField, _filePath, fileName) => {
      sent.push(`${method}:${fileField}:${fileName}`);
    },
    sendTextReply: async () => undefined,
    statPath: async () => ({ size: 1 }),
  });
  await sendQueuedAttachments(createAttachmentTurn());
  assert.deepEqual(sent, ["sendPhoto:photo:a.png"]);
});

test("Outbound attachment sender runtime applies the default outbound size limit", async () => {
  const replies: string[] = [];
  const sendQueuedAttachments = createTelegramQueuedOutboundAttachmentSender({
    sendMultipart: async () => {
      throw new Error("unexpected upload");
    },
    sendTextReply: async (_chatId, _replyToMessageId, text) => {
      replies.push(text);
    },
    statPath: async () => ({
      size: TELEGRAM_OUTBOUND_ATTACHMENT_DEFAULT_MAX_BYTES + 1,
    }),
  });
  await sendQueuedAttachments(createAttachmentTurn());
  assert.deepEqual(replies, [
    `Failed to send attachment a.png: Attachment exceeds size limit (${TELEGRAM_OUTBOUND_ATTACHMENT_DEFAULT_MAX_BYTES + 1} bytes > ${TELEGRAM_OUTBOUND_ATTACHMENT_DEFAULT_MAX_BYTES} bytes)`,
  ]);
});