import { randomUUID } from 'node:crypto';
import { existsSync, readFileSync, statSync } from 'node:fs';
import {
  adaptDoubaoBbox,
  adaptQwenBbox,
  expandSearchArea,
  mergeRects,
} from '@/ai-model/common';
import {
  extractJSONFromCodeBlock,
  preprocessDoubaoBboxJson,
  safeParseJson,
} from '@/ai-model/service-caller';
import { getAIConfig, overrideAIConfig } from '@midscene/shared/env';
import { describe, expect, it } from 'vitest';
import {
  getLogDir,
  getTmpDir,
  getTmpFile,
  overlapped,
  reportHTMLContent,
  writeDumpReport,
} from '../../dist/es/utils'; // use modules from dist, otherwise we will miss the template file

describe('utils', () => {
  it('tmpDir', () => {
    const testDir = getTmpDir();
    expect(typeof testDir).toBe('string');

    const testFile = getTmpFile('txt');
    expect(testFile!.endsWith('.txt')).toBe(true);
  });

  it('log dir', () => {
    const dumpDir = getLogDir();
    expect(dumpDir).toBeTruthy();
  });

  it('write report file', () => {
    const content = randomUUID();
    const reportPath = writeDumpReport('test', content);
    expect(reportPath).toBeTruthy();
    const reportContent = readFileSync(reportPath!, 'utf-8');
    expect(reportContent).contains(content);
  });

  it('write report file with empty dump', () => {
    const reportPath = writeDumpReport('test', []);
    expect(reportPath).toBeTruthy();
    const reportContent = readFileSync(reportPath!, 'utf-8');
    expect(reportContent).contains('type="midscene_web_dump"');
  });

  it('write report file with attributes', () => {
    const content = randomUUID();
    const reportPath = writeDumpReport('test', [
      {
        dumpString: content,
        attributes: {
          foo: 'bar',
          hello: 'world',
        },
      },
    ]);
    expect(reportPath).toBeTruthy();
    const reportContent = readFileSync(reportPath!, 'utf-8');
    expect(reportContent).contains(content);
    expect(reportContent).contains('foo="bar"');
    expect(reportContent).contains('hello="world"');
  });

  it('overlapped', () => {
    const container = { left: 100, top: 100, width: 100, height: 100 };
    const target = { left: 150, top: 150, width: 100, height: 100 };
    expect(overlapped(container, target)).toBeTruthy();

    const target2 = { left: 200, top: 200, width: 100, height: 100 };
    expect(overlapped(container, target2)).toBeFalsy();
  });

  it('reportHTMLContent', () => {
    const reportA = reportHTMLContent([]);
    expect(reportA).toContain(
      '<script type="midscene_web_dump" type="application/json"></script>',
    );

    const content = randomUUID();
    const reportB = reportHTMLContent(content);
    expect(reportB).toContain(
      `<script type="midscene_web_dump" type="application/json">\n${content}\n</script>`,
    );
  });

  it('reportHTMLContent with reportPath', () => {
    const tmpFile = getTmpFile('html');
    expect(tmpFile).toBeTruthy();

    if (!tmpFile) {
      return;
    }

    // test empty array
    const reportPathA = reportHTMLContent([], tmpFile);
    expect(reportPathA).toBe(tmpFile);
    const fileContentA = readFileSync(tmpFile, 'utf-8');
    expect(fileContentA).toContain(
      '<script type="midscene_web_dump" type="application/json"></script>',
    );

    // test string content
    const content = JSON.stringify({ test: randomUUID() });
    const reportPathB = reportHTMLContent(content, tmpFile);
    expect(reportPathB).toBe(tmpFile);
    const fileContentB = readFileSync(tmpFile, 'utf-8');
    expect(fileContentB).toContain(
      `<script type="midscene_web_dump" type="application/json">\n${content}\n</script>`,
    );

    // test array with attributes
    const uuid1 = randomUUID();
    const uuid2 = randomUUID();
    const dumpArray = [
      {
        dumpString: JSON.stringify({ id: uuid1 }),
        attributes: {
          test_attr: 'test_value',
          another_attr: 'another_value',
        },
      },
      {
        dumpString: JSON.stringify({ id: uuid2 }),
        attributes: {
          test_attr2: 'test_value2',
        },
      },
    ];

    const reportPathC = reportHTMLContent(dumpArray, tmpFile);
    expect(reportPathC).toBe(tmpFile);
    const fileContentC = readFileSync(tmpFile, 'utf-8');

    // verify the file content contains attributes and data
    expect(fileContentC).toContain('test_attr="test_value"');
    expect(fileContentC).toContain('another_attr="another_value"');
    expect(fileContentC).toContain('test_attr2="test_value2"');
    expect(fileContentC).toContain(uuid1);
    expect(fileContentC).toContain(uuid2);
  });

  it(
    'should handle multiple large reports correctly',
    () => {
      const tmpFile = getTmpFile('html');
      expect(tmpFile).toBeTruthy();

      if (!tmpFile) {
        return;
      }

      // Create a large string of approximately 100MB
      const generateLargeString = (sizeInMB: number, identifier: string) => {
        const approximateCharsPer1MB = 1024 * 1024; // 1MB in characters
        const totalChars = approximateCharsPer1MB * sizeInMB;

        // Create a basic JSON structure with a very large string
        const baseObj = {
          id: identifier,
          timestamp: new Date().toISOString(),
          data: 'X'.repeat(totalChars - 100), // subtract a small amount for the JSON structure
        };

        return JSON.stringify(baseObj);
      };

      // Monitor memory usage
      const startMemory = process.memoryUsage();
      console.log(
        'Memory usage before test:',
        `RSS: ${Math.round(startMemory.rss / 1024 / 1024)}MB, ` +
          `Heap Total: ${Math.round(startMemory.heapTotal / 1024 / 1024)}MB, ` +
          `Heap Used: ${Math.round(startMemory.heapUsed / 1024 / 1024)}MB`,
      );

      // Store start time
      const startTime = Date.now();

      // Generate 10 large reports (each ~100MB)
      const numberOfReports = 10;
      const dumpArray = Array.from({ length: numberOfReports }).map(
        (_, index) => ({
          dumpString: generateLargeString(100, `large-report-${index + 1}`),
          attributes: {
            report_number: `${index + 1}`,
            report_size: '100MB',
          },
        }),
      );

      // Write the large reports
      const reportPath = reportHTMLContent(dumpArray, tmpFile);
      expect(reportPath).toBe(tmpFile);

      // Calculate execution time
      const executionTime = Date.now() - startTime;
      console.log(`Execution time: ${executionTime}ms`);

      // Check memory usage after test
      const endMemory = process.memoryUsage();
      console.log(
        'Memory usage after test:',
        `RSS: ${Math.round(endMemory.rss / 1024 / 1024)}MB, ` +
          `Heap Total: ${Math.round(endMemory.heapTotal / 1024 / 1024)}MB, ` +
          `Heap Used: ${Math.round(endMemory.heapUsed / 1024 / 1024)}MB`,
      );

      // Check if file exists
      expect(existsSync(tmpFile)).toBe(true);

      // Verify file size is approximately (100MB * 10) + template size
      const stats = statSync(tmpFile);
      const fileSizeInMB = stats.size / (1024 * 1024);
      console.log(`File size: ${fileSizeInMB.toFixed(2)}MB`);

      // We expect the file to be approximately 700MB plus template overhead
      const expectedMinSize = 1000; // 10 reports × 100MB
      expect(fileSizeInMB).toBeGreaterThan(expectedMinSize);
    },
    { timeout: 30000 },
  );

  it('reportHTMLContent array with xss', () => {
    const reportContent = reportHTMLContent([
      {
        dumpString: '<script>alert("xss")</script>',
        attributes: {
          'data-midscene-id': '123',
        },
      },
    ]);
    expect(reportContent).toBeTruthy();
    expect(reportContent).toContain('data-midscene-id="123"');
    expect(reportContent).toContain(
      `__midscene_lt__script__midscene_gt__alert("xss")__midscene_lt__/script__midscene_gt__`,
    );
    expect(reportContent).not.toContain('<script>alert("xss")</script>');
  });

  it('reportHTMLContent string with xss', () => {
    const reportContent = reportHTMLContent('<script>alert("xss")</script>');
    expect(reportContent).toBeTruthy();
    expect(reportContent).toContain(
      `__midscene_lt__script__midscene_gt__alert("xss")__midscene_lt__/script__midscene_gt__`,
    );
    expect(reportContent).not.toContain('<script>alert("xss")</script>');
  });
});

describe('extractJSONFromCodeBlock', () => {
  it('should extract JSON from a direct JSON object', () => {
    const input = '{ "key": "value" }';
    const result = extractJSONFromCodeBlock(input);
    expect(result).toBe('{ "key": "value" }');
  });

  it('should extract JSON from a code block with json language specifier', () => {
    const input = '```json\n{ "key": "value" }\n```';
    const result = extractJSONFromCodeBlock(input);
    expect(result).toBe('{ "key": "value" }');

    const input2 = '  ```JSON\n{ "key": "value" }\n```';
    const result2 = extractJSONFromCodeBlock(input2);
    expect(result2).toBe('{ "key": "value" }');
  });

  it('should extract JSON from a code block without language specifier', () => {
    const input = '```\n{ "key": "value" }\n```';
    const result = extractJSONFromCodeBlock(input);
    expect(result).toBe('{ "key": "value" }');
  });

  it('should extract JSON-like structure from text', () => {
    const input = 'Some text { "key": "value" } more text';
    const result = extractJSONFromCodeBlock(input);
    expect(result).toBe('{ "key": "value" }');
  });

  it('should return the original response if no JSON structure is found', () => {
    const input = 'This is just plain text';
    const result = extractJSONFromCodeBlock(input);
    expect(result).toBe('This is just plain text');
  });

  it('should handle multi-line JSON objects', () => {
    const input = `{
      "key1": "value1",
      "key2": {
        "nestedKey": "nestedValue"
      }
    }`;
    const result = extractJSONFromCodeBlock(input);
    expect(result).toBe(input);
  });

  it('should handle JSON with point coordinates', () => {
    const input = '(123,456)';
    const result = safeParseJson(input);
    expect(result).toEqual([123, 456]);
  });

  it('should parse valid JSON string using JSON.parse', () => {
    const input = '{"key": "value"}';
    const result = safeParseJson(input);
    expect(result).toEqual({ key: 'value' });
  });

  it('should parse dirty JSON using dirty-json parser', () => {
    const input = "{key: 'value'}"; // Invalid JSON but valid dirty-json
    const result = safeParseJson(input);
    expect(result).toEqual({ key: 'value' });
  });

  it('should throw error for unparseable content', () => {
    const input = 'not a json at all';
    const result = safeParseJson(input);
    expect(result).toEqual(input);
  });

  it('should parse JSON from code block', () => {
    const input = '```json\n{"key": "value"}\n```';
    const result = safeParseJson(input);
    expect(result).toEqual({ key: 'value' });
  });

  it('should parse complex nested JSON', () => {
    const input = `{
      "string": "value",
      "number": 123,
      "boolean": true,
      "array": [1, 2, 3],
      "object": {
        "nested": "value"
      }
    }`;
    const result = safeParseJson(input);
    expect(result).toEqual({
      string: 'value',
      number: 123,
      boolean: true,
      array: [1, 2, 3],
      object: {
        nested: 'value',
      },
    });
  });
});

describe('qwen-vl', () => {
  it('adaptQwenBbox', () => {
    const result = adaptQwenBbox([100.3, 200.4, 301, 401]);
    expect(result).toEqual([100, 200, 301, 401]);
  });

  it('adaptQwenBbox with 2 points', () => {
    const result = adaptQwenBbox([100, 200]);
    expect(result).toEqual([100, 200, 120, 220]);
  });

  it('adaptQwenBbox with invalid bbox data', () => {
    expect(() => adaptQwenBbox([100])).toThrow();
  });
});

describe('doubao-vision', () => {
  it('adaptDoubaoBbox', () => {
    const result = adaptDoubaoBbox([100, 200, 300, 400], 400, 900);
    expect(result).toMatchInlineSnapshot(`
      [
        40,
        180,
        120,
        360,
      ]
    `);
  });
  it('adaptDoubaoBbox', () => {
    const result = adaptDoubaoBbox([[100, 200, 300, 400]] as any, 400, 900);
    expect(result).toMatchInlineSnapshot(`
      [
        40,
        180,
        120,
        360,
      ]
    `);
  });
  it('adaptDoubaoBbox', () => {
    const result = adaptDoubaoBbox(
      [
        [100, 200, 300, 400],
        [100, 200, 300, 400],
      ] as any,
      400,
      900,
    );
    expect(result).toMatchInlineSnapshot(`
      [
        40,
        180,
        120,
        360,
      ]
    `);
  });

  it('adaptDoubaoBbox with string bbox', () => {
    const result = adaptDoubaoBbox(['123 222', '789 100'], 1000, 2000);
    expect(result).toMatchInlineSnapshot(`
      [
        123,
        444,
        789,
        200,
      ]
    `);
  });

  it('adaptDoubaoBbox with string bbox', () => {
    const result = adaptDoubaoBbox(['123,222', '789, 100'], 1000, 2000);
    expect(result).toMatchInlineSnapshot(`
      [
        123,
        444,
        789,
        200,
      ]
    `);
  });
});

describe('doubao-vision', () => {
  it('preprocessDoubaoBboxJson', () => {
    const input = 'bbox: [123 456]';
    const result = preprocessDoubaoBboxJson(input);
    expect(result).toMatchInlineSnapshot(`"bbox: [123,456]"`);

    const input2 = 'bbox: [1 4]';
    const result2 = preprocessDoubaoBboxJson(input2);
    expect(result2).toMatchInlineSnapshot(`"bbox: [1,4]"`);

    const input3 = 'bbox: [123 456]\nbbox: [789 100]';
    const result3 = preprocessDoubaoBboxJson(input3);
    expect(result3).toMatchInlineSnapshot(`
      "bbox: [123,456]
      bbox: [789,100]"
    `);

    const input4 = 'bbox: [123 456,789 100]';
    const result4 = preprocessDoubaoBboxJson(input4);
    expect(result4).toMatchInlineSnapshot(`"bbox: [123,456,789,100]"`);

    const input5 = 'bbox: [940 445 969 490]';
    const result5 = preprocessDoubaoBboxJson(input5);
    expect(result5).toMatchInlineSnapshot(`"bbox: [940,445,969,490]"`);

    const input6 = '123 345 11111';
    const result6 = preprocessDoubaoBboxJson(input6);
    expect(result6).toMatchInlineSnapshot(`"123 345 11111"`);

    const input7 = `
{
  "bbox": [
    "550 216",
    "550 216",
    "550 216",
    "550 216"
  ],
  "errors": []
}
    `;
    const result7 = preprocessDoubaoBboxJson(input7);
    expect(result7).toMatchInlineSnapshot(`
      "
      {
        "bbox": [
          "550,216",
          "550,216",
          "550,216",
          "550,216"
        ],
        "errors": []
      }
          "
    `);
  });

  it('adaptDoubaoBbox with 2 points', () => {
    const result = adaptDoubaoBbox([100, 200], 1000, 2000);
    expect(result).toMatchInlineSnapshot(`
      [
        90,
        390,
        110,
        410,
      ]
    `);
  });

  it('adaptDoubaoBbox', () => {
    const result = adaptDoubaoBbox([100, 200, 300, 400], 1000, 2000);
    expect(result).toMatchInlineSnapshot(`
      [
        100,
        400,
        300,
        800,
      ]
    `);
  });

  it('adaptDoubaoBbox with 6 points', () => {
    const result2 = adaptDoubaoBbox([100, 200, 300, 400, 100, 200], 1000, 2000);
    expect(result2).toMatchInlineSnapshot(`
      [
        90,
        390,
        110,
        410,
      ]
    `);
  });

  it('adaptDoubaoBbox with 8 points', () => {
    const result3 = adaptDoubaoBbox(
      [100, 200, 300, 200, 300, 400, 100, 400],
      1000,
      2000,
    );
    expect(result3).toMatchInlineSnapshot(`
      [
        100,
        400,
        300,
        800,
      ]
    `);
  });

  it('adaptDoubaoBbox with invalid bbox data', () => {
    expect(() => adaptDoubaoBbox([100], 1000, 2000)).toThrow();
  });
});

describe('search area', () => {
  it('mergeRects', () => {
    const result = mergeRects([
      { left: 10, top: 10, width: 10, height: 500 },
      { left: 100, top: 100, width: 100, height: 100 },
    ]);
    expect(result).toMatchInlineSnapshot(`
      {
        "height": 500,
        "left": 10,
        "top": 10,
        "width": 190,
      }
    `);
  });

  it('expandSearchArea', () => {
    const result = expandSearchArea(
      { left: 100, top: 100, width: 100, height: 100 },
      { width: 1000, height: 1000 },
    );
    expect(result).toMatchInlineSnapshot(`
      {
        "height": 300,
        "left": 0,
        "top": 0,
        "width": 300,
      }
    `);
  });

  it('expandSearchArea with a big rect', () => {
    const result = expandSearchArea(
      { left: 100, top: 100, width: 500, height: 500 },
      { width: 1000, height: 1000 },
    );
    expect(result).toMatchInlineSnapshot(`
      {
        "height": 820,
        "left": 0,
        "top": 0,
        "width": 820,
      }
    `);
  });

  it('expandSearchArea with a right-most rect', () => {
    const result = expandSearchArea(
      { left: 951, top: 800, width: 50, height: 50 },
      { width: 1000, height: 1000 },
    );
    expect(result).toMatchInlineSnapshot(`
      {
        "height": 300,
        "left": 826,
        "top": 675,
        "width": 174,
      }
    `);
  });
});

describe('env', () => {
  it('getAIConfig', () => {
    const result = getAIConfig('NEVER_EXIST_CONFIG' as any);
    expect(result).toBeUndefined();
  });

  it('overrideAIConfig', () => {
    expect(() =>
      overrideAIConfig({
        MIDSCENE_CACHE: {
          foo: 123,
        } as any,
      }),
    ).toThrow();
  });
});