/**
 * Blockchain Service Tests
 */

import { describe, it, expect, beforeEach, vi } from 'vitest'
import {
  initializeBlockchain,
  recordResourceProvisioning,
  getResourceFromBlockchain,
} from '../blockchain'
import type { Context } from '../../types/context'

// Mock ethers
vi.mock('ethers', () => ({
  ethers: {
    JsonRpcProvider: vi.fn().mockImplementation(() => ({
      getBlockNumber: vi.fn().mockResolvedValue(100),
    })),
    Wallet: vi.fn().mockImplementation(() => ({
      address: '0x1234567890123456789012345678901234567890',
    })),
    Contract: vi.fn().mockImplementation(() => ({
      provisionResource: vi.fn().mockResolvedValue({
        wait: vi.fn().mockResolvedValue({
          hash: '0xabcdef',
          blockNumber: 100,
          gasUsed: 100000n,
          from: '0x1234',
          to: '0x5678',
        }),
      }),
      getResource: vi.fn().mockResolvedValue({
        resourceId: 'resource-1',
        region: 'us-east-1',
        datacenter: 'dc-1',
        resourceType: 0,
        provisionedAt: 1000000n,
        provisionedBy: '0x1234',
        active: true,
        metadata: '{}',
      }),
    })),
  },
}))

describe('Blockchain Service', () => {
  let mockContext: Context
  let mockDb: any

  beforeEach(() => {
    mockDb = {
      query: vi.fn(),
    }

    mockContext = {
      db: mockDb as any,
      user: {
        id: 'user-1',
        email: 'test@example.com',
        name: 'Test User',
        role: 'ADMIN',
      },
    } as Context

    vi.clearAllMocks()
  })

  describe('initializeBlockchain', () => {
    it('should initialize blockchain connection', () => {
      initializeBlockchain({
        rpcUrl: 'http://localhost:8545',
        contractAddress: '0x1234',
        privateKey: '0xabcd',
      })

      // Should not throw
      expect(true).toBe(true)
    })
  })

  describe('recordResourceProvisioning', () => {
    it('should record resource provisioning on blockchain', async () => {
      initializeBlockchain({
        rpcUrl: 'http://localhost:8545',
        contractAddress: '0x1234',
        privateKey: '0xabcd',
      })

      mockDb.query
        .mockResolvedValueOnce({}) // Transaction insert
        .mockResolvedValueOnce({}) // Resource blockchain link

      const txHash = await recordResourceProvisioning(
        mockContext,
        'resource-1',
        'us-east-1',
        'dc-1',
        0,
        {}
      )

      expect(txHash).toBe('0xabcdef')
      expect(mockDb.query).toHaveBeenCalled()
    })
  })

  describe('getResourceFromBlockchain', () => {
    it('should retrieve resource from blockchain', async () => {
      initializeBlockchain({
        rpcUrl: 'http://localhost:8545',
        contractAddress: '0x1234',
      })

      const resource = await getResourceFromBlockchain('resource-1')

      expect(resource).toBeDefined()
      expect(resource.resourceId).toBe('resource-1')
      expect(resource.region).toBe('us-east-1')
    })
  })
})

