/// <reference types="vite/client" />

import { convexTest } from "convex-test";
import { describe, expect, test } from "vitest";
import { api } from "./_generated/api.js";
import type { Id } from "./_generated/dataModel.js";
import { getMaxMessage } from "./messages.js";
import schema from "./schema.js";
import { initConvexTest, modules } from "./setup.test.js";

describe("agent", () => {
  test("getMaxMessage works for threads", async () => {
    const t = initConvexTest();
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "hello" } },
        { message: { role: "assistant", content: "world" } },
      ],
    });
    const maxMessage = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage).toMatchObject({
      _id: messages.at(-1)!._id,
      order: 0,
      stepOrder: 1,
    });
  });
  test("getMaxMessage works for a specific order", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "hello" } },
        { message: { role: "assistant", content: "step 1" } },
        { message: { role: "user", content: "hello2" } },
      ],
    });
    const maxMessage = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">, 0);
    });
    expect(maxMessage).toMatchObject({
      _id: messages.at(1)!._id,
      order: 0,
      stepOrder: 1,
    });
  });

  test("getMaxMessages works when there are tools involved", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "hello" } },
        {
          message: {
            role: "assistant",
            content: [
              {
                type: "tool-call",
                input: { a: 1 },
                toolCallId: "1",
                toolName: "tool",
              },
            ],
          },
        },
        {
          message: {
            role: "tool",
            content: [
              {
                type: "tool-result",
                toolName: "tool",
                result: "foo",
                toolCallId: "1",
              },
            ],
          },
        },
        { message: { role: "assistant", content: "world" } },
      ],
    });
    const maxMessage = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage).toMatchObject({
      _id: messages.at(-1)!._id,
      order: 0,
      stepOrder: 3,
    });
  });

  test("ordering is incremented on subsequent calls to addMessages for user messages", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });
    const maxMessage = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage).toMatchObject({
      _id: messages.at(-1)!._id,
      order: 0,
      stepOrder: 0,
    });
    const { messages: messages2 } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });
    const maxMessage2 = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage2).toMatchObject({
      _id: messages2.at(-1)!._id,
      order: 1,
      stepOrder: 0,
    });
  });

  test("ordering is incremented on subsequent calls to addMessages for assistant messages", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });
    const maxMessage = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage).toMatchObject({
      _id: messages.at(-1)!._id,
      order: 0,
      stepOrder: 0,
    });
    const { messages: messages2 } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "assistant", content: "hello" } }],
    });
    const maxMessage2 = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage2).toMatchObject({
      _id: messages2.at(-1)!._id,
      order: 0,
      stepOrder: 1,
    });
  });

  test("order is incremented for user messages on to addMessages for the same promptMessageId", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });
    const maxMessage = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage).toMatchObject({
      _id: messages.at(-1)!._id,
      order: 0,
      stepOrder: 0,
    });
    const { messages: messages2 } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
      agentName: "test",
      promptMessageId: messages.at(-1)!._id as Id<"messages">,
    });
    const maxMessage2 = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage2).toMatchObject({
      _id: messages2.at(-1)!._id,
      order: 1,
      stepOrder: 0,
    });
  });

  test("sub order is incremented on subsequent calls to addMessages for the same promptMessageId", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });
    const maxMessage = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage).toMatchObject({
      _id: messages.at(-1)!._id,
      order: 0,
      stepOrder: 0,
    });
    const { messages: messages2 } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "assistant", content: "hello" } }],
      agentName: "test",
      promptMessageId: messages.at(-1)!._id as Id<"messages">,
    });
    const maxMessage2 = await t.run(async (ctx) => {
      return await getMaxMessage(ctx, thread._id as Id<"threads">);
    });
    expect(maxMessage2).toMatchObject({
      _id: messages2.at(-1)!._id,
      order: 0,
      stepOrder: 1,
    });
  });

  test("adding multiple messages at a promptMessageId skips later messages", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });

    const { messages: messages2 } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "hello2" } },
        { message: { role: "assistant", content: "hello" } },
      ],
      agentName: "test",
    });
    expect(messages2.length).toBe(2);

    const { messages: messages3 } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        {
          message: {
            role: "assistant",
            content: [
              {
                type: "tool-call",
                input: { a: 1 },
                toolCallId: "1",
                toolName: "tool",
              },
            ],
          },
        },
        {
          message: {
            role: "tool",
            content: [
              {
                type: "tool-result",
                toolName: "tool",
                result: "foo",
                toolCallId: "1",
              },
            ],
          },
        },
        { message: { role: "user", content: "bye" } },
      ],
      agentName: "test",
      promptMessageId: messages.at(-1)!._id as Id<"messages">,
    });

    expect(messages3.length).toBe(3);

    const allMessages = await t.query(api.messages.listMessagesByThreadId, {
      threadId: thread._id as Id<"threads">,
      order: "asc",
    });
    expect(allMessages.page).toHaveLength(6);
    expect(allMessages.page.map((m) => m.order)).toEqual([0, 0, 0, 1, 1, 2]);
    expect(allMessages.page.map((m) => m.stepOrder)).toEqual([
      0, 1, 2, 0, 1, 0,
    ]);
    expect(allMessages.page[0]!.message!.role).toBe("user");
    expect(allMessages.page[0]!.message!.content).toBe("hello");
    expect(allMessages.page[1]!.message!.role).toBe("assistant");
    expect(allMessages.page[2]!.message!.role).toBe("tool");
    expect(allMessages.page[3]!.message!.role).toBe("user");
    expect(allMessages.page[3]!.message!.content).toBe("hello2");
    expect(allMessages.page[4]!.message!.role).toBe("assistant");
    expect(allMessages.page[5]!.message!.role).toBe("user");
    expect(allMessages.page[5]!.message!.content).toBe("bye");
  });

  test("updateMessage updates message content", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });
    const messageId = messages[0]._id as Id<"messages">;

    const updatedMessage = await t.mutation(api.messages.updateMessage, {
      messageId,
      patch: { message: { role: "user", content: "updated content" } },
    });

    expect(updatedMessage.message).toEqual({
      role: "user",
      content: "updated content",
    });
  });

  test("updateMessage updates message status", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "assistant", content: "hello" }, status: "pending" },
      ],
    });
    const messageId = messages[0]._id as Id<"messages">;

    // Initial status should be pending
    expect(messages[0].status).toBe("pending");

    // Update to success
    const updatedMessage = await t.mutation(api.messages.updateMessage, {
      messageId,
      patch: { status: "success" },
    });

    expect(updatedMessage.status).toBe("success");
  });

  test("updateMessage updates error field", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "assistant", content: "hello" }, status: "pending" },
      ],
    });
    const messageId = messages[0]._id as Id<"messages">;

    const updatedMessage = await t.mutation(api.messages.updateMessage, {
      messageId,
      patch: { status: "failed", error: "Something went wrong" },
    });

    expect(updatedMessage.status).toBe("failed");
    expect(updatedMessage.error).toBe("Something went wrong");
  });

  test("updateMessage correctly updates tool messages", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        {
          message: {
            role: "assistant",
            content: [
              {
                type: "tool-call",
                input: { a: 1 },
                toolCallId: "1",
                toolName: "tool",
              },
            ],
          },
        },
      ],
    });
    const messageId = messages[0]._id as Id<"messages">;

    const updatedMessage = await t.mutation(api.messages.updateMessage, {
      messageId,
      patch: {
        message: {
          role: "assistant",
          content: [
            {
              type: "tool-call",
              input: { a: 2, b: 3 },
              toolCallId: "1",
              toolName: "tool",
            },
          ],
        },
      },
    });

    expect(updatedMessage.message).toEqual({
      role: "assistant",
      content: [
        {
          type: "tool-call",
          input: { a: 2, b: 3 },
          toolCallId: "1",
          toolName: "tool",
        },
      ],
    });
  });

  test("updateMessage throws error for non-existent message", async () => {
    const t = convexTest(schema, modules);

    await expect(
      t.mutation(api.messages.updateMessage, {
        messageId: "invalidId" as Id<"messages">,
        patch: { message: { role: "user", content: "test" } },
      }),
    ).rejects.toThrow();
  });

  test("deleteByIds deletes existing messages and returns their IDs", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "hello" } },
        { message: { role: "assistant", content: "world" } },
        { message: { role: "user", content: "test" } },
      ],
    });

    const messageIds = messages.map((m) => m._id as Id<"messages">);
    const deletedIds = await t.mutation(api.messages.deleteByIds, {
      messageIds: [messageIds[0], messageIds[2]], // Delete first and third messages
    });

    expect(deletedIds).toEqual([messageIds[0], messageIds[2]]);

    // Verify messages are actually deleted
    const remainingMessages = await t.query(
      api.messages.listMessagesByThreadId,
      { threadId: thread._id as Id<"threads">, order: "asc" },
    );
    expect(remainingMessages.page).toHaveLength(1);
    expect(remainingMessages.page[0]._id).toBe(messageIds[1]);
  });

  test("deleteByIds handles non-existent message IDs gracefully", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });
    const { messages } = await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "hello" } }],
    });

    const messageId = messages[0]._id as Id<"messages">;
    const validDeletedIds = await t.mutation(api.messages.deleteByIds, {
      messageIds: [messageId],
    });
    expect(validDeletedIds).toEqual([messageId]);

    const deletedIds = await t.mutation(api.messages.deleteByIds, {
      messageIds: [messageId],
    });

    // Should only return the valid ID that was actually deleted
    expect(deletedIds).toEqual([]);

    // Verify the valid message was deleted
    const remainingMessages = await t.query(
      api.messages.listMessagesByThreadId,
      { threadId: thread._id as Id<"threads">, order: "asc" },
    );
    expect(remainingMessages.page).toHaveLength(0);
  });

  test("deleteByOrder deletes messages within specified order range", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });

    // Create multiple rounds of messages with different orders
    await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "message order 0, step 0" } },
        { message: { role: "assistant", content: "message order 0, step 1" } },
      ],
    });

    await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "message order 1, step 0" } },
        { message: { role: "assistant", content: "message order 1, step 1" } },
      ],
    });

    await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "message order 2, step 0" } },
      ],
    });

    // Delete messages in order range 0 to 1 (exclusive)
    const result = await t.mutation(api.messages.deleteByOrder, {
      threadId: thread._id as Id<"threads">,
      startOrder: 0,
      endOrder: 2,
    });

    expect(result.isDone).toBe(true);
    expect(result.lastOrder).toBe(1);
    expect(result.lastStepOrder).toBe(1);

    // Verify only messages from order 0 & 1 were deleted
    const remainingMessages = await t.query(
      api.messages.listMessagesByThreadId,
      { threadId: thread._id as Id<"threads">, order: "asc" },
    );

    expect(remainingMessages.page).toHaveLength(1); // Should have messages from order 2
    expect(remainingMessages.page[0].message!.content).toBe(
      "message order 2, step 0",
    );
  });

  test("deleteByOrder handles step order boundaries correctly", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });

    // Create messages with the same order but different step orders
    await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "step 0" } },
        { message: { role: "assistant", content: "step 1" } },
        { message: { role: "assistant", content: "step 2" } },
        { message: { role: "assistant", content: "step 3" } },
      ],
    });

    // Delete messages from step 1 to step 3 (exclusive)
    const result = await t.mutation(api.messages.deleteByOrder, {
      threadId: thread._id as Id<"threads">,
      startOrder: 0,
      startStepOrder: 1,
      endOrder: 0,
      endStepOrder: 3,
    });

    expect(result.isDone).toBe(true);
    expect(result.lastOrder).toBe(0);
    expect(result.lastStepOrder).toBe(2);

    // Verify only step 1 and 2 were deleted (step 3 is excluded by upperBoundInclusive: false)
    const remainingMessages = await t.query(
      api.messages.listMessagesByThreadId,
      { threadId: thread._id as Id<"threads">, order: "asc" },
    );

    expect(remainingMessages.page).toHaveLength(2);
    expect(remainingMessages.page.map((m) => m.stepOrder)).toEqual([0, 3]);
  });

  test("deleteByOrder returns isDone false when batch limit is reached", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });

    // This test would be more realistic with 65+ messages, but for test efficiency
    // we'll just verify the basic structure works with fewer messages
    await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [
        { message: { role: "user", content: "message 1" } },
        { message: { role: "assistant", content: "message 2" } },
      ],
    });

    const result = await t.mutation(api.messages.deleteByOrder, {
      threadId: thread._id as Id<"threads">,
      startOrder: 0,
      endOrder: 2,
    });

    // With only 2 messages, should be done
    expect(result.isDone).toBe(true);
    expect(result.lastOrder).toBe(0);
    expect(result.lastStepOrder).toBe(1);
  });

  test("deleteByOrder handles empty result set", async () => {
    const t = convexTest(schema, modules);
    const thread = await t.mutation(api.threads.createThread, {
      userId: "test",
    });

    await t.mutation(api.messages.addMessages, {
      threadId: thread._id as Id<"threads">,
      messages: [{ message: { role: "user", content: "message order 0" } }],
    });

    // Try to delete from a range that doesn't exist
    const result = await t.mutation(api.messages.deleteByOrder, {
      threadId: thread._id as Id<"threads">,
      startOrder: 5,
      endOrder: 10,
    });

    expect(result.isDone).toBe(true);
    expect(result.lastOrder).toBeUndefined();
    expect(result.lastStepOrder).toBeUndefined();

    // Verify original message is still there
    const remainingMessages = await t.query(
      api.messages.listMessagesByThreadId,
      { threadId: thread._id as Id<"threads">, order: "asc" },
    );
    expect(remainingMessages.page).toHaveLength(1);
  });
});