/**
 * Contract test for IPlatformAdapter.request()
 *
 * This test validates the platform adapter request functionality
 * according to the contract specification. Tests MUST FAIL until implementation is complete.
 */

import { describe, test, expect, beforeEach, jest } from '@jest/globals'

// Import types that will be implemented
import type { IPlatformAdapter, PlatformRequest, PlatformResponse } from '@/types/platformAdapter'

describe('IPlatformAdapter.request() Contract', () => {
  let adapter: IPlatformAdapter

  beforeEach(() => {
    // This will fail until platform adapters are implemented
    // eslint-disable-next-line @typescript-eslint/no-require-imports
    const { PacificaHttpAdapter } = require('@/adapters/pacifica/PacificaHttpAdapter')
    adapter = new PacificaHttpAdapter({
      platform: 'pacifica',
      baseUrl: 'https://api.pacifica.fi',
      authConfig: { type: 'signature' }
    })
  })

  describe('Basic Request Functionality', () => {
    test('should execute GET request successfully', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/account/info',
        headers: {
          'Content-Type': 'application/json'
        }
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.status).toBeGreaterThanOrEqual(200)
      expect(response.status).toBeLessThan(600)
      expect(response.data).toBeDefined()
      expect(response.headers).toBeDefined()
      expect(response.metadata).toBeDefined()
      expect(response.metadata.platform).toBe('pacifica')
      expect(response.metadata.requestId).toBeDefined()
      expect(response.metadata.duration).toBeGreaterThan(0)
    })

    test('should execute POST request with body', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'POST',
        path: '/api/v1/orders',
        headers: {
          'Content-Type': 'application/json'
        },
        body: {
          symbol: 'BTC/USDT',
          side: 'buy',
          amount: '0.001',
          price: '50000'
        }
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.status).toBeGreaterThanOrEqual(200)
      expect(response.data).toBeDefined()
      expect(response.metadata.platform).toBe('pacifica')
    })

    test('should handle request with query parameters', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/trades',
        params: {
          symbol: 'BTC/USDT',
          limit: 100,
          startTime: Date.now() - 86400000 // 24 hours ago
        }
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.status).toBeGreaterThanOrEqual(200)
      expect(response.data).toBeDefined()
    })

    test('should handle request with custom options', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/markets',
        options: {
          requiresAuth: true,
          timeout: 30000,
          enableRetry: true
        }
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.metadata.authenticated).toBe(true)
      expect(response.metadata.timeout).toBeDefined()
    })
  })

  describe('Authentication Integration', () => {
    test('should authenticate requests requiring authentication', async () => {
      const request: PlatformRequest = {
        accountId: 'authenticated-account',
        method: 'POST',
        path: '/api/v1/orders',
        body: {
          symbol: 'BTC/USDT',
          side: 'buy',
          amount: '0.001'
        },
        options: {
          requiresAuth: true
        }
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.metadata.authenticated).toBe(true)
      expect(response.metadata.signatureAlgorithm).toBeDefined()
      expect(response.metadata.authTimestamp).toBeDefined()
    })

    test('should handle authentication failure gracefully', async () => {
      const request: PlatformRequest = {
        accountId: 'invalid-account',
        method: 'POST',
        path: '/api/v1/orders',
        body: { test: 'data' },
        options: {
          requiresAuth: true
        }
      }

      await expect(adapter.request(request)).rejects.toThrow(/authentication/i)
    })

    test('should skip authentication for public endpoints', async () => {
      const request: PlatformRequest = {
        accountId: 'any-account',
        method: 'GET',
        path: '/api/v1/markets',
        options: {
          requiresAuth: false
        }
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.metadata.authenticated).toBe(false)
    })
  })

  describe('Platform-Specific Behavior', () => {
    test('should format request according to platform requirements', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/account/balances'
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.data).toBeDefined()

      // Platform-specific validation
      expect(adapter.platform).toBe('pacifica')
      expect(adapter.baseUrl).toContain('pacifica')
    })

    test('should handle platform-specific headers', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/ping',
        headers: {
          'X-Pacifica-API-Version': 'v1',
          'User-Agent': 'HTTP-Client/1.0'
        }
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.headers).toBeDefined()
    })

    test('should validate platform-specific request format', async () => {
      const invalidRequest: PlatformRequest = {
        accountId: 'test-account',
        method: 'POST',
        path: '/api/v1/orders',
        body: {
          // Missing required fields for Pacifica
          invalidField: 'value'
        }
      }

      await expect(adapter.request(invalidRequest)).rejects.toThrow(/validation/i)
    })
  })

  describe('Error Handling', () => {
    test('should handle HTTP 4xx errors appropriately', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/nonexistent-endpoint'
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.status).toBeGreaterThanOrEqual(400)
      expect(response.status).toBeLessThan(500)
      expect(response.error).toBeDefined()
      expect(response.error?.type).toBe('client_error')
    })

    test('should handle HTTP 5xx errors with retry logic', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/server-error-endpoint',
        options: {
          enableRetry: true
        }
      }

      // Should either succeed after retry or fail with proper error
      try {
        const response: PlatformResponse = await adapter.request(request)
        expect(response).toBeDefined()
        expect(response.metadata.retryCount).toBeGreaterThan(0)
      } catch (error) {
        expect(error).toBeInstanceOf(Error)
        expect((error as Error).message).toContain('server error')
      }
    })

    test('should handle network timeouts', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/slow-endpoint',
        options: {
          timeout: 1000 // 1 second timeout
        }
      }

      await expect(adapter.request(request)).rejects.toThrow(/timeout/i)
    })

    test('should provide detailed error information', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'POST',
        path: '/api/v1/invalid-data',
        body: { invalid: 'data' }
      }

      try {
        await adapter.request(request)
      } catch (error) {
        expect(error).toBeInstanceOf(Error)
        expect((error as any).code).toBeDefined()
        expect((error as any).platform).toBe('pacifica')
        expect((error as any).accountId).toBe('test-account')
        expect((error as any).requestId).toBeDefined()
      }
    })
  })

  describe('Performance Requirements', () => {
    test('should complete simple requests within performance targets', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/ping'
      }

      const startTime = Date.now()
      const response: PlatformResponse = await adapter.request(request)
      const duration = Date.now() - startTime

      expect(response).toBeDefined()
      expect(duration).toBeLessThan(100) // Should complete within 100ms
      expect(response.metadata.duration).toBeLessThan(100)
    })

    test('should handle concurrent requests efficiently', async () => {
      const requests: PlatformRequest[] = Array.from({ length: 10 }, (_, i) => ({
        accountId: `test-account-${i}`,
        method: 'GET',
        path: '/api/v1/ping'
      }))

      const startTime = Date.now()
      const responses = await Promise.all(
        requests.map(request => adapter.request(request))
      )
      const totalDuration = Date.now() - startTime

      expect(responses).toHaveLength(10)
      responses.forEach(response => {
        expect(response).toBeDefined()
        expect(response.status).toBeGreaterThanOrEqual(200)
      })

      // Concurrent execution should be much faster than sequential
      expect(totalDuration).toBeLessThan(300) // Much less than 10 * 100ms
    })
  })

  describe('Response Processing', () => {
    test('should process successful responses correctly', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/account/info'
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.status).toBeGreaterThanOrEqual(200)
      expect(response.status).toBeLessThan(300)
      expect(response.success).toBe(true)
      expect(response.data).toBeDefined()
      expect(response.error).toBeUndefined()
    })

    test('should process error responses correctly', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/error-endpoint'
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.status).toBeGreaterThanOrEqual(400)
      expect(response.success).toBe(false)
      expect(response.error).toBeDefined()
      expect(response.error?.message).toBeDefined()
      expect(response.error?.code).toBeDefined()
    })

    test('should include comprehensive metadata', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/markets'
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response.metadata).toBeDefined()
      expect(response.metadata.requestId).toBeDefined()
      expect(response.metadata.platform).toBe('pacifica')
      expect(response.metadata.duration).toBeGreaterThan(0)
      expect(response.metadata.timestamp).toBeInstanceOf(Date)
      expect(response.metadata.statusCode).toBe(response.status)
      expect(response.metadata.responseSize).toBeGreaterThan(0)
    })
  })

  describe('Configuration and Setup', () => {
    test('should validate adapter configuration', () => {
      expect(adapter.validateConfig()).toBe(true)
      expect(adapter.platform).toBe('pacifica')
      expect(adapter.baseUrl).toBeDefined()
      expect(adapter.baseUrl).toContain('http')
    })

    test('should provide platform configuration', () => {
      const config = adapter.getConfig()

      expect(config).toBeDefined()
      expect(config.platform).toBe('pacifica')
      expect(config.baseUrl).toBe(adapter.baseUrl)
      expect(config.authConfig).toBeDefined()
      expect(config.timeouts).toBeDefined()
    })

    test('should support configuration updates', async () => {
      const originalConfig = adapter.getConfig()
      expect(originalConfig).toBeDefined()

      // Configuration updates would be tested here if supported
      expect(adapter.platform).toBe('pacifica')
    })
  })

  describe('Resource Management', () => {
    test('should manage request resources efficiently', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/large-response'
      }

      const initialMemory = process.memoryUsage().heapUsed
      const response: PlatformResponse = await adapter.request(request)
      const finalMemory = process.memoryUsage().heapUsed

      expect(response).toBeDefined()

      // Memory usage should be reasonable
      const memoryIncrease = finalMemory - initialMemory
      expect(memoryIncrease).toBeLessThan(10 * 1024 * 1024) // Less than 10MB
    })

    test('should clean up resources after request completion', async () => {
      const request: PlatformRequest = {
        accountId: 'test-account',
        method: 'GET',
        path: '/api/v1/ping'
      }

      const response: PlatformResponse = await adapter.request(request)

      expect(response).toBeDefined()
      expect(response.metadata.resourcesCleanedUp).toBe(true)
    })
  })
})