import { describe, expect, it, vi } from "vitest";

import type { MoltbotConfig } from "../../config/config.js";
import { handleSlackAction } from "./slack-actions.js";

const deleteSlackMessage = vi.fn(async () => ({}));
const editSlackMessage = vi.fn(async () => ({}));
const getSlackMemberInfo = vi.fn(async () => ({}));
const listSlackEmojis = vi.fn(async () => ({}));
const listSlackPins = vi.fn(async () => ({}));
const listSlackReactions = vi.fn(async () => ({}));
const pinSlackMessage = vi.fn(async () => ({}));
const reactSlackMessage = vi.fn(async () => ({}));
const readSlackMessages = vi.fn(async () => ({}));
const removeOwnSlackReactions = vi.fn(async () => ["thumbsup"]);
const removeSlackReaction = vi.fn(async () => ({}));
const sendSlackMessage = vi.fn(async () => ({}));
const unpinSlackMessage = vi.fn(async () => ({}));

vi.mock("../../slack/actions.js", () => ({
  deleteSlackMessage: (...args: unknown[]) => deleteSlackMessage(...args),
  editSlackMessage: (...args: unknown[]) => editSlackMessage(...args),
  getSlackMemberInfo: (...args: unknown[]) => getSlackMemberInfo(...args),
  listSlackEmojis: (...args: unknown[]) => listSlackEmojis(...args),
  listSlackPins: (...args: unknown[]) => listSlackPins(...args),
  listSlackReactions: (...args: unknown[]) => listSlackReactions(...args),
  pinSlackMessage: (...args: unknown[]) => pinSlackMessage(...args),
  reactSlackMessage: (...args: unknown[]) => reactSlackMessage(...args),
  readSlackMessages: (...args: unknown[]) => readSlackMessages(...args),
  removeOwnSlackReactions: (...args: unknown[]) => removeOwnSlackReactions(...args),
  removeSlackReaction: (...args: unknown[]) => removeSlackReaction(...args),
  sendSlackMessage: (...args: unknown[]) => sendSlackMessage(...args),
  unpinSlackMessage: (...args: unknown[]) => unpinSlackMessage(...args),
}));

describe("handleSlackAction", () => {
  it("adds reactions", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    await handleSlackAction(
      {
        action: "react",
        channelId: "C1",
        messageId: "123.456",
        emoji: "✅",
      },
      cfg,
    );
    expect(reactSlackMessage).toHaveBeenCalledWith("C1", "123.456", "✅");
  });

  it("strips channel: prefix for channelId params", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    await handleSlackAction(
      {
        action: "react",
        channelId: "channel:C1",
        messageId: "123.456",
        emoji: "✅",
      },
      cfg,
    );
    expect(reactSlackMessage).toHaveBeenCalledWith("C1", "123.456", "✅");
  });

  it("removes reactions on empty emoji", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    await handleSlackAction(
      {
        action: "react",
        channelId: "C1",
        messageId: "123.456",
        emoji: "",
      },
      cfg,
    );
    expect(removeOwnSlackReactions).toHaveBeenCalledWith("C1", "123.456");
  });

  it("removes reactions when remove flag set", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    await handleSlackAction(
      {
        action: "react",
        channelId: "C1",
        messageId: "123.456",
        emoji: "✅",
        remove: true,
      },
      cfg,
    );
    expect(removeSlackReaction).toHaveBeenCalledWith("C1", "123.456", "✅");
  });

  it("rejects removes without emoji", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    await expect(
      handleSlackAction(
        {
          action: "react",
          channelId: "C1",
          messageId: "123.456",
          emoji: "",
          remove: true,
        },
        cfg,
      ),
    ).rejects.toThrow(/Emoji is required/);
  });

  it("respects reaction gating", async () => {
    const cfg = {
      channels: { slack: { botToken: "tok", actions: { reactions: false } } },
    } as MoltbotConfig;
    await expect(
      handleSlackAction(
        {
          action: "react",
          channelId: "C1",
          messageId: "123.456",
          emoji: "✅",
        },
        cfg,
      ),
    ).rejects.toThrow(/Slack reactions are disabled/);
  });

  it("passes threadTs to sendSlackMessage for thread replies", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    await handleSlackAction(
      {
        action: "sendMessage",
        to: "channel:C123",
        content: "Hello thread",
        threadTs: "1234567890.123456",
      },
      cfg,
    );
    expect(sendSlackMessage).toHaveBeenCalledWith("channel:C123", "Hello thread", {
      mediaUrl: undefined,
      threadTs: "1234567890.123456",
    });
  });

  it("auto-injects threadTs from context when replyToMode=all", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction(
      {
        action: "sendMessage",
        to: "channel:C123",
        content: "Auto-threaded",
      },
      cfg,
      {
        currentChannelId: "C123",
        currentThreadTs: "1111111111.111111",
        replyToMode: "all",
      },
    );
    expect(sendSlackMessage).toHaveBeenCalledWith("channel:C123", "Auto-threaded", {
      mediaUrl: undefined,
      threadTs: "1111111111.111111",
    });
  });

  it("replyToMode=first threads first message then stops", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    const hasRepliedRef = { value: false };
    const context = {
      currentChannelId: "C123",
      currentThreadTs: "1111111111.111111",
      replyToMode: "first" as const,
      hasRepliedRef,
    };

    // First message should be threaded
    await handleSlackAction(
      { action: "sendMessage", to: "channel:C123", content: "First" },
      cfg,
      context,
    );
    expect(sendSlackMessage).toHaveBeenLastCalledWith("channel:C123", "First", {
      mediaUrl: undefined,
      threadTs: "1111111111.111111",
    });
    expect(hasRepliedRef.value).toBe(true);

    // Second message should NOT be threaded
    await handleSlackAction(
      { action: "sendMessage", to: "channel:C123", content: "Second" },
      cfg,
      context,
    );
    expect(sendSlackMessage).toHaveBeenLastCalledWith("channel:C123", "Second", {
      mediaUrl: undefined,
      threadTs: undefined,
    });
  });

  it("replyToMode=first marks hasRepliedRef even when threadTs is explicit", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    const hasRepliedRef = { value: false };
    const context = {
      currentChannelId: "C123",
      currentThreadTs: "1111111111.111111",
      replyToMode: "first" as const,
      hasRepliedRef,
    };

    await handleSlackAction(
      {
        action: "sendMessage",
        to: "channel:C123",
        content: "Explicit",
        threadTs: "2222222222.222222",
      },
      cfg,
      context,
    );
    expect(sendSlackMessage).toHaveBeenLastCalledWith("channel:C123", "Explicit", {
      mediaUrl: undefined,
      threadTs: "2222222222.222222",
    });
    expect(hasRepliedRef.value).toBe(true);

    await handleSlackAction(
      { action: "sendMessage", to: "channel:C123", content: "Second" },
      cfg,
      context,
    );
    expect(sendSlackMessage).toHaveBeenLastCalledWith("channel:C123", "Second", {
      mediaUrl: undefined,
      threadTs: undefined,
    });
  });

  it("replyToMode=first without hasRepliedRef does not thread", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction({ action: "sendMessage", to: "channel:C123", content: "No ref" }, cfg, {
      currentChannelId: "C123",
      currentThreadTs: "1111111111.111111",
      replyToMode: "first",
      // no hasRepliedRef
    });
    expect(sendSlackMessage).toHaveBeenCalledWith("channel:C123", "No ref", {
      mediaUrl: undefined,
      threadTs: undefined,
    });
  });

  it("does not auto-inject threadTs when replyToMode=off", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction(
      {
        action: "sendMessage",
        to: "channel:C123",
        content: "Off mode",
      },
      cfg,
      {
        currentChannelId: "C123",
        currentThreadTs: "1111111111.111111",
        replyToMode: "off",
      },
    );
    expect(sendSlackMessage).toHaveBeenCalledWith("channel:C123", "Off mode", {
      mediaUrl: undefined,
      threadTs: undefined,
    });
  });

  it("does not auto-inject threadTs when sending to different channel", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction(
      {
        action: "sendMessage",
        to: "channel:C999",
        content: "Different channel",
      },
      cfg,
      {
        currentChannelId: "C123",
        currentThreadTs: "1111111111.111111",
        replyToMode: "all",
      },
    );
    expect(sendSlackMessage).toHaveBeenCalledWith("channel:C999", "Different channel", {
      mediaUrl: undefined,
      threadTs: undefined,
    });
  });

  it("explicit threadTs overrides context threadTs", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction(
      {
        action: "sendMessage",
        to: "channel:C123",
        content: "Explicit thread",
        threadTs: "2222222222.222222",
      },
      cfg,
      {
        currentChannelId: "C123",
        currentThreadTs: "1111111111.111111",
        replyToMode: "all",
      },
    );
    expect(sendSlackMessage).toHaveBeenCalledWith("channel:C123", "Explicit thread", {
      mediaUrl: undefined,
      threadTs: "2222222222.222222",
    });
  });

  it("handles channel target without prefix when replyToMode=all", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction(
      {
        action: "sendMessage",
        to: "C123",
        content: "No prefix",
      },
      cfg,
      {
        currentChannelId: "C123",
        currentThreadTs: "1111111111.111111",
        replyToMode: "all",
      },
    );
    expect(sendSlackMessage).toHaveBeenCalledWith("C123", "No prefix", {
      mediaUrl: undefined,
      threadTs: "1111111111.111111",
    });
  });

  it("adds normalized timestamps to readMessages payloads", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    readSlackMessages.mockResolvedValueOnce({
      messages: [{ ts: "1735689600.456", text: "hi" }],
      hasMore: false,
    });

    const result = await handleSlackAction({ action: "readMessages", channelId: "C1" }, cfg);
    const payload = result.details as {
      messages: Array<{ timestampMs?: number; timestampUtc?: string }>;
    };

    const expectedMs = Math.round(1735689600.456 * 1000);
    expect(payload.messages[0].timestampMs).toBe(expectedMs);
    expect(payload.messages[0].timestampUtc).toBe(new Date(expectedMs).toISOString());
  });

  it("passes threadId through to readSlackMessages", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    readSlackMessages.mockClear();
    readSlackMessages.mockResolvedValueOnce({ messages: [], hasMore: false });

    await handleSlackAction(
      { action: "readMessages", channelId: "C1", threadId: "12345.6789" },
      cfg,
    );

    const [, opts] = readSlackMessages.mock.calls[0] ?? [];
    expect(opts?.threadId).toBe("12345.6789");
  });

  it("adds normalized timestamps to pin payloads", async () => {
    const cfg = { channels: { slack: { botToken: "tok" } } } as MoltbotConfig;
    listSlackPins.mockResolvedValueOnce([
      {
        type: "message",
        message: { ts: "1735689600.789", text: "pinned" },
      },
    ]);

    const result = await handleSlackAction({ action: "listPins", channelId: "C1" }, cfg);
    const payload = result.details as {
      pins: Array<{ message?: { timestampMs?: number; timestampUtc?: string } }>;
    };

    const expectedMs = Math.round(1735689600.789 * 1000);
    expect(payload.pins[0].message?.timestampMs).toBe(expectedMs);
    expect(payload.pins[0].message?.timestampUtc).toBe(new Date(expectedMs).toISOString());
  });

  it("uses user token for reads when available", async () => {
    const cfg = {
      channels: { slack: { botToken: "xoxb-1", userToken: "xoxp-1" } },
    } as MoltbotConfig;
    readSlackMessages.mockClear();
    readSlackMessages.mockResolvedValueOnce({ messages: [], hasMore: false });
    await handleSlackAction({ action: "readMessages", channelId: "C1" }, cfg);
    const [, opts] = readSlackMessages.mock.calls[0] ?? [];
    expect(opts?.token).toBe("xoxp-1");
  });

  it("falls back to bot token for reads when user token missing", async () => {
    const cfg = {
      channels: { slack: { botToken: "xoxb-1" } },
    } as MoltbotConfig;
    readSlackMessages.mockClear();
    readSlackMessages.mockResolvedValueOnce({ messages: [], hasMore: false });
    await handleSlackAction({ action: "readMessages", channelId: "C1" }, cfg);
    const [, opts] = readSlackMessages.mock.calls[0] ?? [];
    expect(opts?.token).toBeUndefined();
  });

  it("uses bot token for writes when userTokenReadOnly is true", async () => {
    const cfg = {
      channels: { slack: { botToken: "xoxb-1", userToken: "xoxp-1" } },
    } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction({ action: "sendMessage", to: "channel:C1", content: "Hello" }, cfg);
    const [, , opts] = sendSlackMessage.mock.calls[0] ?? [];
    expect(opts?.token).toBeUndefined();
  });

  it("allows user token writes when bot token is missing", async () => {
    const cfg = {
      channels: {
        slack: { userToken: "xoxp-1", userTokenReadOnly: false },
      },
    } as MoltbotConfig;
    sendSlackMessage.mockClear();
    await handleSlackAction({ action: "sendMessage", to: "channel:C1", content: "Hello" }, cfg);
    const [, , opts] = sendSlackMessage.mock.calls[0] ?? [];
    expect(opts?.token).toBe("xoxp-1");
  });
});
