import { describe, it, expect } from 'vitest';
import { buildRowsFromPayload } from '../src/processor/index.js';
import projectMetadata from '../src/cache/projectMetadata.js';

describe('Processor Logic', () => {
  const basePayload = {
    ts_ms: 1700000000000,
    hotel_id: 1001,
    room_id: '8001',
    device_id: 'dev_001',
    direction: '上报',
    cmd_word: '0x36',
    frame_id: 1,
    udp_raw: 'AA552000543353413610CD63088151000000000000000001180003000114005ECB',
    sys_lock_status: 0,
    report_count: 0,
    fault_count: 0
  };

  it('should validate required fields', () => {
    expect(() => buildRowsFromPayload({})).toThrow();
    expect(() => buildRowsFromPayload({ ...basePayload, ts_ms: undefined })).toThrow();
  });

  it('should handle 0x36 Status Report with device list', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      report_count: 2,
      device_list: [
        { dev_type: 1, dev_addr: 10, dev_loop: 1, dev_data: 100 },
        { dev_type: 1, dev_addr: 11, dev_loop: 2, dev_data: 0 }
      ]
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows).toHaveLength(2);
    expect(rows[0].action_type).toBe('设备回路状态');
    expect(rows[0].dev_addr).toBe(10);
    expect(rows[1].dev_addr).toBe(11);
    expect(rows[0].details.device_list).toHaveLength(2);
  });

  it('should handle 0x36 Fault Report', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      fault_count: 1,
      fault_list: [
        { dev_type: 1, dev_addr: 10, dev_loop: 1, error_type: 2, error_data: 5 }
      ]
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows).toHaveLength(1);
    expect(rows[0].action_type).toBe('设备回路状态');
    expect(rows[0].error_type).toBe(2);
  });

  it('should handle 0x36 Mixed Report (Status + Fault)', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      report_count: 1,
      fault_count: 1,
      device_list: [{ dev_type: 1, dev_addr: 10, dev_loop: 1, dev_data: 100 }],
      fault_list: [{ dev_type: 1, dev_addr: 10, dev_loop: 1, error_type: 2, error_data: 5 }]
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows).toHaveLength(2); // 1 status + 1 fault
  });

  it('should handle 0x0F Control Command', () => {
    const payload = {
      ...basePayload,
      direction: '下发',
      cmd_word: '0x0F',
      control_list: [
        { dev_type: 1, dev_addr: 10, dev_loop: 1, type_l: 1, type_h: 2 }
      ]
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows).toHaveLength(1);
    expect(rows[0].action_type).toBe('下发控制');
    expect(rows[0].type_l).toBe(1);
    expect(rows[0].type_h).toBe(2);
    expect(rows[0].dev_loop).toBe(1);
  });

  it('should handle 0x0F ACK', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x0F',
      control_list: [
        { dev_type: 1, dev_addr: 1, dev_loop: 1, dev_data: 1, type_h: 0 }
      ]
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows).toHaveLength(1);
    expect(rows[0].action_type).toBe('设备回路状态');
  });

  it('should fallback when lists are empty for 0x36', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      device_list: [],
      fault_list: []
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows).toHaveLength(1);
    expect(rows[0].action_type).toBe('设备回路状态');
    expect(rows[0].dev_type).toBeNull();
  });

  it('should classify 0x36 as 用户操作 when dev_type is user-operated', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      device_list: [
        { dev_type: 2, dev_addr: 10, dev_loop: 1, dev_data: 100 }
      ]
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows).toHaveLength(1);
    expect(rows[0].action_type).toBe('用户操作');
  });

  it('should store udp_raw as base64 when input is hex string', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      device_list: [],
      fault_list: []
    };

    const expectedBase64 = Buffer.from(payload.udp_raw.replace(/[\s:]/g, ''), 'hex').toString('base64');
    const rows = buildRowsFromPayload(payload);

    expect(rows).toHaveLength(1);
    expect(rows[0].udp_raw).toBe(expectedBase64);
  });

  it('should keep udp_raw unchanged when input is not hex string', () => {
    const payload = {
      ...basePayload,
      udp_raw: 'YWJjMTIz',
      direction: '上报',
      cmd_word: '0x36',
      device_list: [
        { dev_type: 1, dev_addr: 10, dev_loop: 1, dev_data: 100 }
      ]
    };

    const rows = buildRowsFromPayload(payload);

    expect(rows[0].udp_raw).toBe('YWJjMTIz');
  });

  it('should default extra to empty object when not provided', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      device_list: [],
      fault_list: []
    };

    const rows = buildRowsFromPayload(payload);

    expect(rows[0].extra).toEqual({});
  });

  it('should preserve extra when provided by upstream', () => {
    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      device_list: [],
      fault_list: [],
      extra: {
        source: 'upstream',
        trace_id: 'trace-123'
      }
    };

    const rows = buildRowsFromPayload(payload);

    expect(rows[0].extra).toEqual({
      source: 'upstream',
      trace_id: 'trace-123'
    });
  });

  it('should enrich rows with loop_name from metadata', () => {
    // Mock metadata
    projectMetadata.roomMap.set('dev_001', 101);
    // Key format: roomTypeId:00Type00Addr00Loop
    // type=1, addr=10, loop=1 -> 001010001
    projectMetadata.loopMap.set('101:001010001', 'Main Chandelier');

    const payload = {
      ...basePayload,
      direction: '上报',
      cmd_word: '0x36',
      device_list: [
        { dev_type: 1, dev_addr: 10, dev_loop: 1, dev_data: 100 }, // Should match 001010001
        { dev_type: 1, dev_addr: 10, dev_loop: 2, dev_data: 0 }    // Should not match (001010002) -> Fallback
      ]
    };

    const rows = buildRowsFromPayload(payload);
    expect(rows[0].loop_name).toBe('Main Chandelier');
    // dev_type 1 is '强电继电器（输出状态）'
    expect(rows[1].loop_name).toBe('[1强电继电器（输出状态）-10-2]');
  });
});